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Mathias RM, Chu MKW, Edwards S, Day AS, Ma C, Jairath V, Bryant RV. Meta-analysis: Intestinal ultrasound to evaluate colonic contents and constipation. Aliment Pharmacol Ther 2024. [PMID: 38745540 DOI: 10.1111/apt.18029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/02/2024] [Accepted: 04/18/2024] [Indexed: 05/16/2024]
Abstract
BACKGROUND Constipation can be diagnosed clinically using the Rome criteria. Ultrasound (US), which lacks the radiation exposure of conventional X-ray, holds promise as a non-invasive tool to evaluate colonic contents and constipation. AIM To examine the role of US in the assessment of constipation. METHODS We performed a systematic search of Embase (OVID, 1984), Medline (Ovid, 1946), Cochrane Central, ClinicalTrials.gov and Australia New Zealand Clinical Trials Registry from database inception to 26 January 2024 according to PRISMA guidelines and prospectively registered with PROSPERO. All studies using US to assess constipation or colonic contents in either adults or children were included. Rectal diameter measurements were pooled in meta-analysis. Risk of bias was assessed using the Newcastle Ottawa Scales and Joanna Briggs Institute checklists. RESULTS Of 12,232 studies screened, 51 articles (6084 patients; 3422 children) describing US to assess symptoms in patients with constipation were included. Most studies used Rome criteria to diagnose constipation. Rectal diameter was associated with clinical constipation in 29 paediatric studies (3331 patients). Meta-analysis showed the mean rectal diameter of constipated patients was significantly higher than controls (mean difference 12 mm, 95% confidence intervals (CI): 6.48, 17.93, p < 0.0001, n = 16 studies). Other features of constipation on US included posterior acoustic shadowing and echogenicity of luminal contents. CONCLUSION US is an appealing imaging modality to assess luminal contents and constipation. Further well-designed studies are required to validate US metrics that accurately identify constipation.
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Affiliation(s)
- R M Mathias
- Inflammatory Bowel Disease Service, The Queen Elizabeth Hospital, Adelaide, South Australia, Australia
- Inflammatory Bowel Disease Research Group, The Basil Hetzel Institute for Translational Health Research, Adelaide, South Australia, Australia
- School of Medicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - M K W Chu
- Inflammatory Bowel Disease Service, The Queen Elizabeth Hospital, Adelaide, South Australia, Australia
- Inflammatory Bowel Disease Research Group, The Basil Hetzel Institute for Translational Health Research, Adelaide, South Australia, Australia
- School of Medicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - S Edwards
- School of Public Health, The University of Adelaide, Adelaide, South Australia, Australia
| | - A S Day
- Inflammatory Bowel Disease Service, The Queen Elizabeth Hospital, Adelaide, South Australia, Australia
- Inflammatory Bowel Disease Research Group, The Basil Hetzel Institute for Translational Health Research, Adelaide, South Australia, Australia
- School of Medicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
| | - C Ma
- Division of Gastroenterology & Hepatology, Department of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
- Alimentiv Inc., London, Ontario, Canada
| | - V Jairath
- Alimentiv Inc., London, Ontario, Canada
- Division of Gastroenterology, Department of Medicine, London Health Sciences Centre, Western University, London, Ontario, Canada
- Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada
| | - R V Bryant
- Inflammatory Bowel Disease Service, The Queen Elizabeth Hospital, Adelaide, South Australia, Australia
- Inflammatory Bowel Disease Research Group, The Basil Hetzel Institute for Translational Health Research, Adelaide, South Australia, Australia
- School of Medicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, South Australia, Australia
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Kandel R, Merlano M, Tan P, Brar G, Mallick R, Macdonald B, Dubé C, Murthy S, Stiell I, McCurdy JD. Persistently High Rates of Abdominal Computed Tomography Imaging Among Patients With Inflammatory Bowel Disease Who Present to the Emergency Department. J Can Assoc Gastroenterol 2022; 6:64-72. [PMID: 37025509 PMCID: PMC10071298 DOI: 10.1093/jcag/gwac029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Abstract
Background
Recent guidelines recommended judicious use of abdominal computed tomography (CT) in the emergency department (ED) for inflammatory bowel disease. Trends in CT utilization over the last decade, including since the implementation of these guidelines, remain unknown.
Methods
We performed a single-centre, retrospective study between 2009 and 2018 to assess trends in CT utilization within 72 h of an ED encounter. Changes in the annual rates of CT imaging among adults with IBD were estimated by Poisson regression and CT findings by Cochran-Armitage or Cochran-Mantel Haenszel tests.
Results
A total of 3000 abdominal CT studies were performed among 14,783 ED encounters. CT utilization increased annually by 2.7% in Crohn’s disease (CD) (95% confidence interval [CI], 1.2 to 4.3; P = 0.0004), 4.2% in ulcerative colitis (UC) (95% CI, 1.7 to 6.7; P = 0.0009) and 6.3% in IBD unclassifiable (95% CI, 2.5 to 10.0; P = 0.0011). Among encounters with gastrointestinal symptoms, 60% with CD and 33% with UC underwent CT imaging in the final year of the study. Urgent CT findings (obstruction, phlegmon, abscess or perforation) and urgent penetrating findings alone (phlegmon, abscess or perforation) comprised 34% and 11% of CD findings, and 25% and 6% of UC findings, respectively. The CT findings remained stable overtime for both CD (P = 0.13) and UC (P = 0.17).
Conclusion
Our study demonstrated persistently high rates of CT utilization among patients with IBD who presented to the ED over the last decade. Approximately one third of scans demonstrated urgent findings, with a minority demonstrating urgent penetrating findings. Future studies should aim to identify patients in whom CT imaging is most appropriate.
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Affiliation(s)
- Rana Kandel
- Faculty of Medicine, University of Ottawa , Ottawa, Ontario , Canada
- Ottawa Hospital Research Institute, University of Ottawa , Ottawa, Ontario , Canada
| | - Maria Merlano
- Faculty of Medicine, University of Ottawa , Ottawa, Ontario , Canada
| | - Pearl Tan
- Faculty of Medicine, University of Ottawa , Ottawa, Ontario , Canada
| | - Gurmun Brar
- Faculty of Medicine, University of Ottawa , Ottawa, Ontario , Canada
| | - Ranjeeta Mallick
- Ottawa Hospital Research Institute, University of Ottawa , Ottawa, Ontario , Canada
| | - Blair Macdonald
- Ottawa Hospital Research Institute, University of Ottawa , Ottawa, Ontario , Canada
- Department of Medical Imaging, The Ottawa Hospital , Ottawa, Ontario , Canada
| | - Catherine Dubé
- Faculty of Medicine, University of Ottawa , Ottawa, Ontario , Canada
- Ottawa Hospital Research Institute, University of Ottawa , Ottawa, Ontario , Canada
- Department of Medicine, Division of Gastroenterology, The Ottawa Hospital , Ottawa, Ontario , Canada
| | - Sanjay Murthy
- Faculty of Medicine, University of Ottawa , Ottawa, Ontario , Canada
- Ottawa Hospital Research Institute, University of Ottawa , Ottawa, Ontario , Canada
- Department of Medicine, Division of Gastroenterology, The Ottawa Hospital , Ottawa, Ontario , Canada
| | - Ian Stiell
- Faculty of Medicine, University of Ottawa , Ottawa, Ontario , Canada
- Ottawa Hospital Research Institute, University of Ottawa , Ottawa, Ontario , Canada
- Department of Emergency Medicine, The Ottawa Hospital , Ottawa, Ontario , Canada
| | - Jeffery D McCurdy
- Faculty of Medicine, University of Ottawa , Ottawa, Ontario , Canada
- Ottawa Hospital Research Institute, University of Ottawa , Ottawa, Ontario , Canada
- Department of Medicine, Division of Gastroenterology, The Ottawa Hospital , Ottawa, Ontario , Canada
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Riskin Geuz KS, Schwartz D. Less Emergency Department Abdominopelvic Computed Tomography for Patients With Crohn's Disease: A New Scoring System. J Clin Gastroenterol 2022; 56:712-717. [PMID: 34907921 DOI: 10.1097/mcg.0000000000001634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 10/10/2021] [Indexed: 12/10/2022]
Abstract
BACKGROUND In recent years, the use of abdominal pelvic computed tomography (APCT) in the emergency department (ED) for patients with Crohn's disease (CD) has risen steadily. Thus, exposing these patients to recurrent radiation, despite studies showing that only 30% to 40% had significant findings in ED APCT. GOAL Our aim was to find clinical and laboratory variables that can predict substantial findings on ED APCT, which may require invasive intervention. METHODS We analyzed ED visits of patients with known CD that underwent an emergent APCT for gastrointestinal complaints, over a 10-year period. Patients with positive and negative findings in the APCT were compared in order to evaluate independent effects of different variables, including patients' characteristics, CD history, ED complaints, and laboratory tests. RESULTS In 44% of 183 ED visits, there were significant findings on ED APCT, however, only 22% of them underwent invasive intervention. Laboratory tests: C-reactive protein >50 mg/L, neutrophil count >75%, platelet count >350×10 9 /L, and ileocolon location at diagnosis were all positive predicting factors. Whereas, smoking or ED complaints of diarrhea/fever reduced the risk for significant findings. CONCLUSIONS Using the 7 most significant predicting factors, we built an easy to use scoring system-Crohn Assessment Tool for CT upon Hospitalization (CATCH) for ED clinicians. This scoring system could have prevented unnecessary ED APCT from 42% of the patients in our study, without missing those who required invasive intervention.
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Affiliation(s)
- Kinneret S Riskin Geuz
- Joyce & Irving Goldman Medical School, Ben-Gurion University of the Negev
- Department of Gastroenterology & Hepatology, Soroka Medical Center, Beer Sheva, Israel
| | - Doron Schwartz
- Joyce & Irving Goldman Medical School, Ben-Gurion University of the Negev
- Department of Gastroenterology & Hepatology, Soroka Medical Center, Beer Sheva, Israel
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Abou Saleh M, Alkhayyat M, Habash A, Almomani A, Qayyum F, Kim W, Bena J, Martin C, Regueiro M, Rieder F, Simons-Linares CR, Chahal P. The Natural Course of Pancreatic Cysts in Inflammatory Bowel Disease: Results of a Long-term Follow-up. Pancreas 2022; 51:814-820. [PMID: 36395408 PMCID: PMC10921864 DOI: 10.1097/mpa.0000000000002102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVES The natural course of pancreatic cysts in inflammatory bowel disease (IBD) is unknown. We aim to describe the natural course of pancreatic cysts in IBD and evaluate long-term outcomes. METHODS A database of patients with abdominal imaging diagnosis of pancreatic cysts (2008-2019) was reviewed. Patients with IBD and pancreatic cysts (study group) and pancreatic cysts without IBD (controls) were selected. Outcomes were measured at 1, 3, 5, and 10 years. Several logistic regression models were used for analysis. RESULTS Of the 1789 patients evaluated, 1690 had pancreatic cysts without IBD, and 78 had IBD and pancreatic cysts. Majority of cysts were intraductal papillary mucinous neoplasms. Patients with IBD and pancreatic cysts were more likely to be diagnosed with pancreatic cysts at a younger age (P < 0.001) and were more likely to undergo surgical intervention at a younger age (P < 0.001). CONCLUSIONS This is the first study to evaluate the natural course of pancreatic cysts in IBD patients. Patients with IBD were more likely to have pancreatic cysts detected at a younger age. Despite the early presentation, there were no differences in long-term outcomes. Patients with IBD with pancreatic cysts should be managed similarly to those without IBD.
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Affiliation(s)
- Mohannad Abou Saleh
- From the Gastroenterology and Hepatology, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, OH
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Łukawska A, Ślósarz D, Zimoch A, Serafin K, Poniewierka E, Kempiński R. Cumulative Effective Dose from Medical Imaging in Inflammatory Bowel Disease. Diagnostics (Basel) 2021; 11:diagnostics11122387. [PMID: 34943623 PMCID: PMC8700332 DOI: 10.3390/diagnostics11122387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 12/15/2022] Open
Abstract
Inflammatory bowel diseases (IBD) are chronic and relapsing disorders usually requiring numerous medical imaging. IBD patients might be exposed to a large dose of radiation. As a cumulative effective dose (CED) ≥ 50 mSv is considered significant for stochastic risks of cancer, it is important to monitor the radiation exposure of IBD patients. In the present work, we aimed to quantify the mean CED in IBD patients and identify factors associated with exposure to high doses of diagnostic radiation. A retrospective chart view of patients with IBD hospitalized between 2015 and 2019 was performed. A total of 65 patients with Crohn's disease (CD) and 98 patients with ulcerative colitis (UC) were selected. Of all imaging studies performed, 73% were with doses of ionizing radiation. Mean CED (SD) amounted to 19.20 (15.64) millisieverts (mSv) and 6.66 (12.39) mSv, respectively, in patients with CD and UC (p < 0.00001). Only 1.84% of the patients received CED ≥ 50 mSv. We identified three factors associated with CED in the IBD patients: number of surgical procedures, and number and length of hospitalization. CD patients with strictures or penetrating disease and UC patients with extensive colitis were more likely to receive higher radiation doses.
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Affiliation(s)
- Agata Łukawska
- Department of Gastroenterology and Hepatology, Wroclaw Medical University, 213 Borowska, 50–556 Wroclaw, Poland; (D.Ś.); (E.P.); (R.K.)
- Correspondence: ; Tel.: +48-71-733-21-20
| | - Dominika Ślósarz
- Department of Gastroenterology and Hepatology, Wroclaw Medical University, 213 Borowska, 50–556 Wroclaw, Poland; (D.Ś.); (E.P.); (R.K.)
| | - Aneta Zimoch
- Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland; (A.Z.); (K.S.)
| | - Karol Serafin
- Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland; (A.Z.); (K.S.)
| | - Elżbieta Poniewierka
- Department of Gastroenterology and Hepatology, Wroclaw Medical University, 213 Borowska, 50–556 Wroclaw, Poland; (D.Ś.); (E.P.); (R.K.)
| | - Radosław Kempiński
- Department of Gastroenterology and Hepatology, Wroclaw Medical University, 213 Borowska, 50–556 Wroclaw, Poland; (D.Ś.); (E.P.); (R.K.)
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Konikoff T, Goren I, Yalon M, Tamir S, Avni-Biron I, Yanai H, Dotan I, Ollech JE. Machine learning for selecting patients with Crohn's disease for abdominopelvic computed tomography in the emergency department. Dig Liver Dis 2021; 53:1559-1564. [PMID: 34253482 DOI: 10.1016/j.dld.2021.06.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/18/2021] [Accepted: 06/21/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Patients with Crohn's disease (CD) frequently undergo abdominopelvic computed tomography (APCT) in the emergency department (ED). It's essential to diagnose clinically actionable findings (CAF) as they may need immediate intervention, frequently surgical. However, repeated APCT's includes increased ionizing radiation exposure. Guidance regarding APCT performance is mostly clinical and empiric. AIMS We used a machine learning (ML) approach for predicting CAF on APCT in the ED. METHODS We performed a retrospective cohort study of patients with CD who presented to the ED and underwent APCT. CAF were defined as bowel obstruction, perforation, intra-abdominal abscess or complicated fistula. ML was used to predict the probability of having CAF on APCT, using routine clinical variables. RESULTS Of 101 admissions included, 44 (43.5%) had CAF on APCT. ML successfully identified patients at low (NPV 91.6%, CI-95% 90.6-92.5) and high (PPV 92.8%, CI-95%, 92.3-93.2) risk for CAF (AUROC = 0.774), using beats-per-minute, mean arterial pressure, neutrophil-to-lymphocyte ratio and sex. This allowed the construction of a risk stratification scheme according to patients' probability for CAF on APCT. CONCLUSION We present a novel artificial intelligence-based approach, utilizing readily available clinical variables to better select patients with CD in the ED for APCT. This might reduce the number of APCTs performed, avoiding related hazards while ensuring high-risk patients undergo APCT.
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Affiliation(s)
- Tom Konikoff
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Idan Goren
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Marianna Yalon
- Radiology Department, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shlomit Tamir
- Radiology Department, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Irit Avni-Biron
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Henit Yanai
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Iris Dotan
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jacob E Ollech
- Division of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
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7
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Levartovsky A, Barash Y, Ben-Horin S, Ungar B, Soffer S, Amitai MM, Klang E, Kopylov U. Machine learning for prediction of intra-abdominal abscesses in patients with Crohn's disease visiting the emergency department. Therap Adv Gastroenterol 2021; 14:17562848211053114. [PMID: 34707689 PMCID: PMC8543712 DOI: 10.1177/17562848211053114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 09/23/2021] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Intra-abdominal abscess (IA) is an important clinical complication of Crohn's disease (CD). A high index of clinical suspicion is needed as imaging is not routinely used during hospital admission. This study aimed to identify clinical predictors of an IA among hospitalized patients with CD using machine learning. METHODS We created an electronic data repository of all patients with CD who visited the emergency department of our tertiary medical center between 2012 and 2018. We searched for the presence of an IA on abdominal imaging within 7 days from visit. Machine learning models were trained to predict the presence of an IA. A logistic regression model was compared with a random forest model. RESULTS Overall, 309 patients with CD were hospitalized and underwent abdominal imaging within 7 days. Forty patients (12.9%) were diagnosed with an IA. On multivariate analysis, high C-reactive protein (CRP) [above 65 mg/l, adjusted odds ratio (aOR): 16 (95% CI: 5.51-46.18)], leukocytosis [above 10.5 K/μl, aOR: 4.47 (95% CI: 1.91-10.45)], thrombocytosis [above 322.5 K/μl, aOR: 4.1 (95% CI: 2-8.73)], and tachycardia [over 97 beats per minute, aOR: 2.7 (95% CI: 1.37-5.3)] were independently associated with an IA. Random forest model showed an area under the curve of 0.817 ± 0.065 with six features (CRP, hemoglobin, WBC, age, current biologic therapy, and BUN). CONCLUSION In our large tertiary center cohort, the machine learning model identified the association of six clinical features (CRP, hemoglobin, WBC, age, BUN, and biologic therapy) with the presentation of an IA. These may assist as a decision support tool in triaging CD patients for imaging to exclude this potentially life-threatening complication.
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Affiliation(s)
| | - Yiftach Barash
- Department of Diagnostic Imaging, Sheba Medical
Center, Tel Hashomer, Tel-Aviv University, Israel,DeepVision Lab, Sheba Medical Center, Tel
Hashomer, Israel
| | - Shomron Ben-Horin
- Department of Gastroenterology, Sheba Medical
Center, Tel Hashomer, Tel-Aviv University, Israel
| | - Bella Ungar
- Department of Gastroenterology, Sheba Medical
Center, Tel Hashomer, Tel-Aviv University, Israel
| | - Shelly Soffer
- DeepVision Lab, Sheba Medical Center, Tel
Hashomer, Israel; Internal Medicine B, Assuta Medical Center, Ben-Gurion
University of the Negev, Ashdod, Israel
| | - Marianne M. Amitai
- Department of Diagnostic Imaging, Sheba Medical
Center, Tel Hashomer, Tel-Aviv University, Israel
| | - Eyal Klang
- Department of Diagnostic Imaging, Sheba Medical
Center, Tel Hashomer, Tel-Aviv University, Israel,DeepVision Lab, Sheba Medical Center, Tel
Hashomer, Israel
| | - Uri Kopylov
- Department of Gastroenterology, Sheba Medical
Center, Tel Hashomer, Tel-Aviv University, Israel
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Hadi YB, Khan AA, Naqvi SFZ, Khan S, Thompson J, Kupec JT. Are We Overradiating Patients with Irritable Bowel Syndrome? Inflamm Intest Dis 2021; 6:32-37. [PMID: 33850837 DOI: 10.1159/000511105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/24/2020] [Indexed: 11/19/2022] Open
Abstract
Introduction Protracted exposures to small doses of radiation, even cumulative effective doses (CED) as low as 50-100 mSv, may increase the risk for malignancy. Medical radiation exposure has not been rigorously examined for patients with irritable bowel syndrome (IBS). We examined medical radiation exposure in patients with IBS at a tertiary care center in the USA. Methods Patients diagnosed with IBS at our institute from 2009 to 2018 were included in a retrospective cohort study. Medical charts were examined to calculate total and annual CED. Results 221 patients were included; mean CED was 40.32 mSv (SD: 54.36). Fifty-nine participants (26.7%) received >50 mSv of CED with 27 participants (12.2%) exceeding 100 mSv. Conventional imaging, nuclear medicine, and fluoroscopy accounted for 74.08, 12.93, and 12.98% of total CED, respectively. CT scans contributed to 66.61% of total CED. Outpatient orders accounted for 37.96% of total CED, while 31.4% of total CED was ordered in the emergency department. Population-specific high total CED was calculated as 105.65 mSv. Multivariable binomial logistic regression model found that comorbid anxiety, chronic pain medication use, and diarrhea-predominant IBS were independently positively associated with population-specific high CED exposure. No significant temporal trend in peri-diagnostic mean CED was found. Conclusion Patients with IBS receive high amounts of medical radiation, with 1 in 4 patients reaching at-risk levels of 50 mSv or more. Usage of pain medication at home, comorbid anxiety, and IBS-D are independently linked to an increased risk of high CED.
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Affiliation(s)
- Yousaf B Hadi
- Internal Medicine, West Virginia University, Morgantown, West Virginia, USA
| | - Adnan Aman Khan
- Internal Medicine, West Virginia University, Morgantown, West Virginia, USA
| | - Syeda F Z Naqvi
- Internal Medicine, West Virginia University, Morgantown, West Virginia, USA
| | - Salman Khan
- Internal Medicine, West Virginia University, Morgantown, West Virginia, USA
| | - Jesse Thompson
- Internal Medicine, West Virginia University, Morgantown, West Virginia, USA
| | - Justin T Kupec
- Internal Medicine, West Virginia University, Morgantown, West Virginia, USA
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Davari M, Keshtkar A, Sajadian ES, Delavari A, Iman R. Safety and effectiveness of MRE in comparison with CTE in diagnosis of adult Crohn's disease. Med J Islam Repub Iran 2020; 33:132. [PMID: 32280638 PMCID: PMC7137873 DOI: 10.34171/mjiri.33.132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Indexed: 11/28/2022] Open
Abstract
Background: Crohn's disease (CD) is a chronic inflammatory disease of the gastrointestinal tract that is characterized by recurrent attacks and frequent recovery. The lifelong course of this disease requires frequent assessment of the disease activity. The aim of this study was to compare the effectiveness and safety of computed tomography enterography (CTE) to magnetic resonance enterography (MRE) in adults with CD.
Methods: A systematic review of the literatures was performed to evaluate the effectiveness and safety of CTE in comparison with MRE. PubMed, Cochrane Library, Scopus, Web of Science, and Embase were searched. Effectiveness outcomes included were sensitivity, specificity, diagnosis difference, diagnostic odds ratio, and positive and negative likelihood. Quality assessment of the studies was conducted using the QADAS score. Meta-analysis was done by RevMan 5.3 for selected outcomes.
Results: Five studies had eligibility for analyzing effectiveness. The meta-analysis results showed that diagnosis difference of MRE and CTE, for diagnosing active CD (0.03 CI 95% -0.07–0.13), fistula (-0.01 CI 95% -0.09–0.07), and cramping (-0.02 CI 95% -0.1– 0.06) were not statistically significant. Six studies were finally selected for safety assessment. The results showed that people who are examined with CTE frequently are at increased risk of developing cancer significantly, as they receive more than 50 msv of radiation per year.
Conclusion: There was no significant difference between MRE and CTE in diagnosis of Crohn’s activity, detection of bowel obstruction, and detection of fistula and stenosis of the alimentary canal. However, the assessment of the safety profile of MRE and CTE showed that MRE is meaningfully safer than CTE for evaluating the recurrence of CD.
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Affiliation(s)
- Majid Davari
- Department of Pharmacoeconomics and Pharmaceutical Administration, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbas Keshtkar
- Health Equity Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Elaheh Sadat Sajadian
- Student Research Committee, Principal Moderator, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Delavari
- Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Rashin Iman
- Department of Pharmacoeconomics and Pharmaceutical Administration, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Khoury T, Daher S, Massarwa M, Hakimian D, Benson AA, Viener E, Farah R, Mari A, Hazou W, Kadah A, Sbeit W, Mahamid M, Israeli E. A Validated Score Assessing the Risk of an Intra-Abdominal Abscess in Patients with Crohn's Disease Presenting at the Emergency Department. J Crohns Colitis 2019; 13:1131-1137. [PMID: 30768181 DOI: 10.1093/ecco-jcc/jjz043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND AIMS A majority of acutely ill Crohn's disease [CD] patients who present to Emergency Department [ED] will undergo an abdominal CT to rule out disease complications. We aimed to generate a simple non-invasive scoring model to predict the presence of an intra-abdominal abscess in CD patients in the ED. METHODS We performed a retrospective case-control study at four Israeli hospitals from January 1, 2010 to May 30, 2018. Inclusion criteria included patients with an established diagnosis of CD that had cross-sectional abdominal imaging performed. A total of 322 patients were included, and 81 [25%] were diagnosed with an intra-abdominal abscess. RESULTS In univariate analysis, ileo-colonic location (odds ratio [OR] 1.88, p = 0.0148), perianal CD [OR 7.01, p = 0.0004], fever [OR 1.88, p = 0.0247], neutrophil-to-lymphocyte ratio [OR 1.12, p < 0.0001], and C-reactive protein [OR 1.10, p < 0.0001] were significantly associated with abscess formation, whereas current use of corticosteroids was negatively associated with abscess formation [OR 0.46, 95% CI, 0.2-0.88, p = 0.0192]. We developed a diagnostic score that included five parameters that were significant on multivariate regression analysis, with assignment of weights for each variable according to the coefficient estimate. A low cut-off score of ≤7 was associated with a negative predictive value [NPV] of 93% for abscess formation, whereas a high cut-off score of >9 was associated with a positive predictive value of 65%. We validated this score with an independent cohort [area under the curve of 0.881 and NPV of 98.5%]. CONCLUSION We recommend incorporating this score as an aid for stratifying acutely ill CD patients in the ED with low or high probability of the presence of an intra-abdominal abscess.
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Affiliation(s)
- Tawfik Khoury
- Institute of Gastroenterology and Liver Diseases, Department of Medicine, Hadassah - Hebrew University Medical Center, Jerusalem.,Gastroenterology and Endoscopy Units, The Nazareth Hospital, EMMS, Nazareth.,Institute of Gastroenterology and Liver Diseases, Galilee Medical Center, Naharia.,dFaculty of Medicine in the Galilee, Bar-Ilan University, Safed
| | - Saleh Daher
- Institute of Gastroenterology and Liver Diseases, Department of Medicine, Hadassah - Hebrew University Medical Center, Jerusalem
| | - Muhammad Massarwa
- Institute of Gastroenterology and Liver Diseases, Department of Medicine, Hadassah - Hebrew University Medical Center, Jerusalem
| | - David Hakimian
- Institute of Gastroenterology and Liver Diseases, Department of Medicine, Hadassah - Hebrew University Medical Center, Jerusalem
| | - Ariel A Benson
- Institute of Gastroenterology and Liver Diseases, Department of Medicine, Hadassah - Hebrew University Medical Center, Jerusalem
| | - Elez Viener
- Institute of Gastroenterology and Liver Diseases, Department of Medicine, Hadassah - Hebrew University Medical Center, Jerusalem
| | - Raymond Farah
- dFaculty of Medicine in the Galilee, Bar-Ilan University, Safed.,Department of Internal Medicine B, Ziv Medical Center, Safed, Israel
| | - Amir Mari
- Gastroenterology and Endoscopy Units, The Nazareth Hospital, EMMS, Nazareth
| | - Wadi Hazou
- Institute of Gastroenterology and Liver Diseases, Department of Medicine, Hadassah - Hebrew University Medical Center, Jerusalem
| | - Anas Kadah
- Institute of Gastroenterology and Liver Diseases, Galilee Medical Center, Naharia.,dFaculty of Medicine in the Galilee, Bar-Ilan University, Safed
| | - Wisam Sbeit
- Institute of Gastroenterology and Liver Diseases, Galilee Medical Center, Naharia.,dFaculty of Medicine in the Galilee, Bar-Ilan University, Safed
| | - Mahmud Mahamid
- Gastroenterology and Endoscopy Units, The Nazareth Hospital, EMMS, Nazareth
| | - Eran Israeli
- Institute of Gastroenterology and Liver Diseases, Department of Medicine, Hadassah - Hebrew University Medical Center, Jerusalem
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11
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Low-Dose Computed Tomography for the Optimization of Radiation Dose Exposure in Patients with Crohn's Disease. Gastroenterol Res Pract 2018; 2018:1768716. [PMID: 30515203 PMCID: PMC6234436 DOI: 10.1155/2018/1768716] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 09/03/2018] [Accepted: 09/30/2018] [Indexed: 12/13/2022] Open
Abstract
Magnetic resonance imaging (MRI) is the mainstay method for the radiological imaging of the small bowel in patients with inflammatory bowel disease without the use of ionizing radiation. There are circumstances where imaging using ionizing radiation is required, particularly in the acute setting. This usually takes the form of computed tomography (CT). There has been a significant increase in the utilization of computed tomography (CT) for patients with Crohn's disease as patients are frequently diagnosed at a relatively young age and require repeated imaging. Between seven and eleven percent of patients with IBD are exposed to high cumulative effective radiation doses (CEDs) (>35–75 mSv), mostly patients with Crohn's disease (Newnham E 2007, Levi Z 2009, Hou JK 2014, Estay C 2015). This is primarily due to the more widespread and repeated use of CT, which accounts for 77% of radiation dose exposure amongst patients with Crohn's disease (Desmond et al., 2008). Reports of the projected cancer risks from the increasing CT use (Berrington et al., 2007) have led to increased patient awareness regarding the potential health risks from ionizing radiation (Coakley et al., 2011). Our responsibilities as physicians caring for these patients include education regarding radiation risk and, when an investigation that utilizes ionizing radiation is required, to keep radiation doses as low as reasonably achievable: the “ALARA” principle. Recent advances in CT technology have facilitated substantial radiation dose reductions in many clinical settings, and several studies have demonstrated significantly decreased radiation doses in Crohn's disease patients while maintaining diagnostic image quality. However, there is a balance to be struck between reducing radiation exposure and maintaining satisfactory image quality; if radiation dose is reduced excessively, the resulting CT images can be of poor quality and may be nondiagnostic. In this paper, we summarize the available evidence related to imaging of Crohn's disease, radiation exposure, and risk, and we report recent advances in low-dose CT technology that have particular relevance.
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12
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James SL, van Langenberg DR, Taylor KM, Gibson PR. Characterization of ulcerative colitis-associated constipation syndrome (proximal constipation). JGH Open 2018; 2:217-222. [PMID: 30483593 PMCID: PMC6207018 DOI: 10.1002/jgh3.12076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 06/14/2018] [Accepted: 06/23/2018] [Indexed: 01/03/2023]
Abstract
BACKGROUND The syndrome of constipation with other abdominal symptoms ("proximal constipation") in ulcerative colitis (UC) is commonly recognized by practitioners but is poorly described, with no recognized definition and little understanding with regard to prevalence and effect of therapies on disease outcomes. This study aimed to address these issues in a cross-sectional, consecutive series of patients with UC. METHODS A working definition of proximal constipation was established. Consecutive patients were recruited, and their disease activity, recent medications, and investigations plus abdominal symptoms were assessed at a study visit. Relevant clinical data were also extracted from medical records. RESULTS Of 125 patients with UC, (mean age 47, range 14-84 years, 61 male), 58 (46%) fulfilled the definition of proximal constipation. The main symptoms were reduced stool frequency (69%), hard stools (43%), abdominal pain (40%), excessive flatus (29%), straining (24%), and sensation of incomplete emptying (14%). Proximal constipation was associated with female gender (OR 3.45 [1.45-8.24]), left-sided (OR 2.84 [1.14-7.11]) and concurrently active disease (OR 5.56 [1.96-16.67]), but not age, disease duration or therapy. A total of 88% had an increase in anti-inflammatory therapy, with the use of laxatives or fiber supplements in 63% compared with 1.4% of those without proximal constipation. CONCLUSIONS Proximal constipation is common, and its risk increases in active and distal disease, especially in women. Validation of its definition and evaluation of therapeutic strategies are needed. A new term "ulcerative colitis-associated constipation syndrome" is proposed to more accurately depict its nature.
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Affiliation(s)
- Sally L James
- Eastern Health Clinical School, Monash UniversityBox Hill HospitalBox HillVictoriaAustralia
| | | | - Kirstin M Taylor
- Department of GastroenterologyAlfred Hospital and Monash UniversityMelbourneVictoriaAustralia
| | - Peter R Gibson
- Department of GastroenterologyAlfred Hospital and Monash UniversityMelbourneVictoriaAustralia
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13
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Dai C, Jiang M, Sun MJ. Fecal markers in the management of inflammatory bowel disease. Postgrad Med 2018; 130:597-606. [PMID: 30063872 DOI: 10.1080/00325481.2018.1503919] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Cong Dai
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, China
| | - Min Jiang
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, China
| | - Ming-Jun Sun
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, China
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14
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Koliani-Pace J, Vaughn B, Herzig SJ, Davis RB, Gashin L, Obuch J, Cheifetz AS. Utility of Emergency Department Use of Abdominal Pelvic Computed Tomography in the Management of Crohn's Disease. J Clin Gastroenterol 2017; 50:859-864. [PMID: 26974753 PMCID: PMC5018411 DOI: 10.1097/mcg.0000000000000508] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
GOAL The primary aim of this study was to determine predictors of clinically significant computed tomography (CT) scans, paying particular attention to findings of previous CT scans. BACKGROUND Use of CT to assess patients with Crohn's disease (CD) in the Emergency Department (ED) is both costly and exposes patients to high levels of ionizing radiation while not clearly improving outcomes. STUDY Patients with CD who underwent CT scan in the Emergency Department from 2008 to 2011 at a tertiary referral center were assessed for clinically significant findings. A multivariable generalized estimating equation model with logit link and exchangeable working correlation structure was constructed to assess for independent predictors of CT scans with clinically significant findings. RESULTS A total of 118 patients with CD underwent 194 CT scans. Ninety-two of 194 (47%) CT scans demonstrated clinically significant findings. Predictors of clinically significant CT scans included ileal disease involvement [odds ratios (OR) 3.47, P=0.01] and white blood cell count >12 (OR 2.1, P=0.03). Most notably, patients with a CT scan without clinically significant findings performed in the preceding month were significantly less likely to have a clinically significant CT scan (OR 0.23, P=0.005). CONCLUSIONS Patients with CD who had a CT scan without significant findings the month prior are unlikely to have clinically significant CT findings. Ileal disease and an elevated white blood cell are predictive of clinically significant CT scans.
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Affiliation(s)
- Jenna Koliani-Pace
- Department of Internal Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215
| | - Byron Vaughn
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA 02215
- University of Minnesota, Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, Minneapolis, MN 55454
| | - Shoshana J. Herzig
- Department of Internal Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215
| | - Roger B. Davis
- Department of Internal Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215
| | - Laurie Gashin
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA 02215
| | - Joshua Obuch
- Department of Internal Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215
| | - Adam S. Cheifetz
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA 02215
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15
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Merino Rodríguez E, Carrera Alonso E, Torralba González de Suso M, Sánchez da Silva M, Martínez López M, Sánchez-Tembleque Zarandona MD. Ionizing diagnostic radiation exposure in patients with Crohn's disease: A retrospective study in a medium hospital and its predictive factors. GASTROENTEROLOGIA Y HEPATOLOGIA 2017; 41:97-102. [PMID: 28988059 DOI: 10.1016/j.gastrohep.2017.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 07/17/2017] [Accepted: 08/08/2017] [Indexed: 12/11/2022]
Abstract
INTRODUCTION It is estimated that diagnostic medical radiation exposure may be responsable for 0.5-2% of cancers worldwide. Because of the relapsing course of Crohn's disease (CD), these patients usually requiere multiple ionizing radiation test. OBJECTIVE Stimating the total cumulative effective dose received by our CD patients and identifying the risk factors associated with the exposure to a cumulative effective dose due to the disease (CEED) > 50mSv. MATERIALS AND METHODS Retrospective cohort study (2001-2014). POPULATION patients with CD. Risk dose >50mSv. For calculating de cumulative effective dose and the CEED, all the ionizing test done were taken. For identifying predictive factors for receiving a CEDD >50mSv, an univariate and a multivariate logistic regression analyses were performed using a >50mSv dose as dependent variable. RESULTS Of the 267 patients analyzed the 24.6% of them received a cumulative effective dose > 50mSv and the 15.2% a CEED>50mSv. In the multivariate analysis, the following variables were identified as independent predictors associated with a CEDD >50mSv: major surgery (OR= 2.1; IC95% [1.1-3.8]; p=.019) and severity (OR= 20.6; IC95% [4.5-94.8]; p<.01). CONCLUSIONS Patients with CD are more at risk of receiving risk CEED, so it would be advisable to monitor the cumulative effective dose received to anticipate our intervention in order to avoid reaching that dose. The ultrasounds and abdominal resonance enterography are alternatives in these cases, although their accessibility is limited in some centers.
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Affiliation(s)
| | - Elisa Carrera Alonso
- Servicio de Aparato Digestivo, Hospital Universitario de Guadalajara, Guadalajara, España
| | | | - Marta Sánchez da Silva
- Servicio de Aparato Digestivo, Hospital Universitario de Guadalajara, Guadalajara, España
| | - María Martínez López
- Servicio de Aparato Digestivo, Hospital Universitario de Guadalajara, Guadalajara, España
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Naidu J, Wong Z, Palaniappan S, Ngiu CS, Yaacob NY, Abdul Hamid H, Hikmah Elias M, Mokhtar NM, Raja Ali RA. Radiation Exposure in Patients with Inflammatory Bowel Disease: a Fourteen-Year Review at a Tertiary Care Centre in Malaysia. Asian Pac J Cancer Prev 2017; 18:933-939. [PMID: 28545190 PMCID: PMC5494242 DOI: 10.22034/apjcp.2017.18.4.933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background and Aims: Patients with inflammatory bowel disease (IBD) are subjected to a large amount of ionizing radiation during the course of their illness. This may increase their risk of malignancy to a greater level than that due to the disease itself. In Caucasian patients with Crohn’s disease, this has been well documented and recommendations are in place to avoid high radiation imaging protocols. However, there are limited data available on radiation exposure in Asian IBD patients. We therefore sought to identify total radiation exposure and any differences between ethnically diverse ulcerative colitis (UC) and Crohn’s disease (CD) patients at our centre along with determining factors that may contribute to any variation. Methods: The cumulative effective dose (CED) was calculated retrospectively from 2000 to 2014 using data from our online radiology database and patients’ medical records. Total CED in the IBD population was measured. High exposure was defined as a radiation dose of greater than 0.2mSv (equivalent to slightly less than ½ a year of background radiation). Results: A total of 112 cases of IBD (36 CD and 76 UC) were reviewed. Our CD patients were diagnosed at an earlier age than our UC cases (mean age 26.1 vs 45.7). The total CED in our IBD population was 8.53 (95% CI: 4.53-12.52). Patients with CD were exposed to significantly higher radiation compared to those with UC. The mean CED was 18.6 (7.30-29.87) and 3.65 (1.74-5.56, p=0.01) for CD and UC patients respectively. 2 patients were diagnosed as having a malignancy during follow up with respective CED values of 1.76mSv and 10mSv. Conclusions: CD patients, particularly those with complicated disease, received a higher frequency of diagnostic imaging over a shorter period when compared to UC patients. Usage of low radiation imaging protocols should be encouraged in IBD patients to reduce their risk of consequent malignancy.
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Affiliation(s)
- Jeevinesh Naidu
- Gastroenterology Unit, Department of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia.
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17
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Englund H, Lidén K K, Lind T, Sundström T, Karling P. Radiation exposure in patients with inflammatory bowel disease and irritable bowel syndrome in the years 2001-2011. Scand J Gastroenterol 2017; 52:300-305. [PMID: 27832710 DOI: 10.1080/00365521.2016.1252945] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES To compare cumulative ionizing radiation in patients with inflammatory bowel disease (IBD) and irritable bowel syndrome (IBS) for the years 2001-2011. To study how radiation exposure change over time in patients with newly diagnosed IBD and factors associated with radiation exposure. MATERIAL AND METHODS All radiological investigations performed between 1 January 2001 and 31 December 2011 were retrospectively recorded in patients with Crohn's disease (CD) (n = 103), ulcerative colitis (UC) (n = 304) and IBS (n = 149). Analyses were done with Mann-Whitney and Chi-Square test. RESULTS The median total cumulative radiation exposure in mSv for CD (20.0, inter quartile range (IQR) 34.8), UC (7.01, IQR 23.8), IBS (2.71, IQR 9.15) and the proportion of patients who had been exposed for more than 50 mSv during the study period (CD 19%, UC 11%, IBS 3%) were significantly higher in the patients with CD compared to patients with UC (p < .001) and IBS (p < .001), respectively. In turn, patients with UC had significantly higher doses than patients with IBS (p = .005). Risk factors for radiation exposure were female gender (CD), early onset (UC), ileocolonic location (CD), previous surgery (CD and UC), depression (IBS) and widespread pain (IBS). In newly diagnosed CD, there was a significant decline in median cumulative radiation dose in mSv (17.2 vs. 12.0; p = .048) during the study period. CONCLUSIONS Patients with CD are at greatest risk for high cumulative radiation exposure, but there is a decline in exposure during the late 2000s. Non-colectomized patients with UC and patients with IBS have a relatively low risk of cumulative radiation exposure.
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Affiliation(s)
- Hanna Englund
- a Department of Public Health and Clinical Medicine , Umeå University , Umeå , Sweden
| | - Katarina Lidén K
- a Department of Public Health and Clinical Medicine , Umeå University , Umeå , Sweden
| | - Torbjörn Lind
- b Department of Clinical Sciences, Pediatrics , Umeå University , Umeå , Sweden
| | - Torbjörn Sundström
- c Department of Radiation Sciences, Diagnostic Radiology , Umeå University , Umeå , Sweden
| | - Pontus Karling
- a Department of Public Health and Clinical Medicine , Umeå University , Umeå , Sweden
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18
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Lopez RN, Leach ST, Lemberg DA, Duvoisin G, Gearry RB, Day AS. Fecal biomarkers in inflammatory bowel disease. J Gastroenterol Hepatol 2017; 32:577-582. [PMID: 27723123 DOI: 10.1111/jgh.13611] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/30/2016] [Indexed: 12/12/2022]
Abstract
Over the last two decades, knowledge on fecal biomarkers has substantially increased. Nowadays, these non-invasive markers of inflammation have significant clinical utility in the management of inflammatory bowel disease. Their use informs the decision to perform endoscopy before diagnosis is made right through to influencing therapeutic choices and the need for interval endoscopic assessment. In this review, the roles of two S100 proteins, calprotectin, and S100A12 are described along with that of lactoferrin, in the context of inflammatory bowel disease.
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Affiliation(s)
- Robert N Lopez
- Department of Paediatrics, University of Otago (Christchurch), Christchurch, New Zealand
| | - Steven T Leach
- School of Women's and Children's Health, University of New South Wales, Sydney, New South Wales, Australia
| | - Daniel A Lemberg
- School of Women's and Children's Health, University of New South Wales, Sydney, New South Wales, Australia
| | - Gilles Duvoisin
- School of Women's and Children's Health, University of New South Wales, Sydney, New South Wales, Australia
| | - Richard B Gearry
- Department of Medicine, University of Otago (Christchurch), Christchurch, New Zealand
| | - Andrew S Day
- Department of Paediatrics, University of Otago (Christchurch), Christchurch, New Zealand
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Govani SM, Waljee AK, Kocher KE, Swoger JM, Saul M, Higgins PD. Validation of a tool predicting important findings on computed tomography among Crohn's disease patients. United European Gastroenterol J 2016; 5:270-275. [PMID: 28344795 DOI: 10.1177/2050640616658218] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 06/13/2016] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Patients with Crohn's disease (CD) are frequently subjected to computed tomography (CT) in the emergency department (ED). This young population is at higher risk of malignancy from radiation exposure. OBJECTIVES We aimed to validate a decision tool predicting complications (perforation, abscess or other serious finding) on imaging at two sites. METHODS We conducted a retrospective review of CT outcomes among patients with CD with ED visits at two tertiary care centers. Inclusion criteria were a CT of the abdomen/pelvis with contrast and complete lab data (erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP)) within 24 hours of arrival at the University of Michigan (UM) (2012-2013) and the University of Pittsburgh (UPMC) (2009-2012). Sensitivity, negative predictive value (NPV), miss rate and CT avoidance rate were calculated. RESULTS At UPMC (n = 210), the tool had a sensitivity of 88.9% and NPV of 98.0%, potentially saving 47.1% from CT with a miss rate of 1.0%. At UM (n = 248), the tool had a sensitivity of 90.9% and NPV of 96.0%, saving 40.3% from CT with a miss rate of 1.6%. CONCLUSION A decision tool using CRP and ESR predicting CT outcomes among CD patients performed well in an external validation, allowing providers to forgo CT use with a low miss rate.
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Affiliation(s)
- Shail M Govani
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA; Veteran's Affairs Hospital, Ann Arbor, MI, USA
| | - Akbar K Waljee
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA; Veteran's Affairs Center for Clinical Management Research, Ann Arbor, MI, USA
| | - Keith E Kocher
- Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Jason M Swoger
- Department of Internal Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Melissa Saul
- Department of Bioinformatics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Peter Dr Higgins
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
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Griffey RT, Fowler KJ, Theilen A, Gutierrez A. Considerations in Imaging Among Emergency Department Patients With Inflammatory Bowel Disease. Ann Emerg Med 2016; 69:587-599. [PMID: 27317304 DOI: 10.1016/j.annemergmed.2016.04.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 03/15/2016] [Accepted: 04/05/2016] [Indexed: 12/16/2022]
Abstract
Patients with inflammatory bowel disease who experience abdominal pain and gastrointestinal symptoms often seek care in the emergency department (ED). These patients commonly undergo abdominopelvic computed tomography (CT) as part of their evaluation, and the rate of imaging appears to be increasing without a corresponding increase in identification of clinically actionable findings or effect on disposition. Studies demonstrate that the yield of CT tends to be fairly high. Yet, because inflammatory bowel disease is often diagnosed at an early age, these patients are repeatedly imaged during their lifetime, a subset of whom accumulate high levels of ionizing radiation exposure, increasing their risk of cancer. This compounds an already increased risk of cancer in these patients because of inflammatory bowel disease alone. Lack of intimate knowledge of a patient's disease phenotype and disease progression contributes to uncertainty in distinguishing between an inflammatory exacerbation; a complication such as obstruction, abscess, perforation, fistula, or stricture; and a noninflammatory-bowel-disease-related condition. This uncertainty can lead to overuse of imaging with CT. Limited availability of and lack of awareness of alternate imaging modalities and strategies may prevent providers from pursuing strategies that avoid ionizing radiation. In this article, we review options for imaging inflammatory bowel disease patients in the ED and attempts undertaken to risk stratify these patients, and we discuss ways in which details of a patient's disease might guide imaging decisionmaking.
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Affiliation(s)
- Richard T Griffey
- Division of Emergency Medicine, Washington University School of Medicine, St. Louis, MO.
| | - Kathryn J Fowler
- Department of Radiology, Washington University School of Medicine, St. Louis, MO
| | - Andrew Theilen
- Division of Emergency Medicine, Washington University School of Medicine, St. Louis, MO
| | - Alexandra Gutierrez
- Division of Gastroenterology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO
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21
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Magro F, Coelho R, Guimarães LS, Silva M, Peixoto A, Lopes S, Macedo G. Ionizing radiation exposure is still increasing in Crohn's disease: Who should be blamed? Scand J Gastroenterol 2016; 50:1214-25. [PMID: 25881793 DOI: 10.3109/00365521.2015.1037344] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND AIM Crohn's disease (CD) patients undergo many radiological studies employing ionizing radiation for diagnosis and management purposes. Our aim was to assess the total radiation exposure of our patients over the years, to estimate the risk factors for exposure to high doses, and to correlate radiation exposure to immunosuppression. METHODS The cumulative effective dose of radiation (CEDR) was calculated multiplying the number of imaging studies by the effective dose of each examination. RESULTS A total of 451 patients with CD (226 female) were followed during 11.0 years (interquartile range [IQR]: 6.0-16.0), with 52.1% of the patients being classified with penetrating (B3) and 38.6% being steroid-dependent. About 16% were exposed to high-radiation dose levels (CEDR >50 mSv) and 4% were exposed to CEDR >100 mSv. The mean CEDR between age 26 and 35 years was 12.539 mSv and a significant dose of radiation (over 50 mSv) was achieved at a median age of 40 (IQR: 29.0-47.0). Abdominal-pelvic computed tomography scan was the examination that contributed the most for CEDR. Patients with B3 phenotype, previous surgery, azathioprine, and anti-tumor necrosis factor (TNF)-α therapy were exposed earlier on the course of the disease to CEDR >50 mSv (p < 0.001). The value of CEDR in the patients under immunosuppression mainly increased in the first year of immunosuppression. CONCLUSION Penetrating phenotype, abdominal surgery, steroid resistance or steroid dependence, and treatment with anti-TNF-α and azathioprine were predictive factors for high CEDR. It was also demonstrated that immunosuppression and anti-TNF-α treatment were followed by a sustained increment of radiation exposure and that a significant dose of radiation was achieved <40 years of age.
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Affiliation(s)
- Fernando Magro
- Gastroenterology Department, Faculty of Medicine, Centro Hospitalar São João , Oporto , Portugal
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Abstract
OBJECTIVE The purpose of this study was to analyze the performance of pure model-based iterative reconstruction (MBIR) in low-dose CT enterography. SUBJECTS AND METHODS Forty-four patients with Crohn disease referred for CT enterography were included. Low-dose modified-protocol and conventional-protocol CT datasets were contemporaneously acquired. Conventional-protocol image formation was performed with 40% adaptive statistical iterative reconstruction (ASIR). Modified-protocol data were reconstructed with 100% MBIR and 40% ASIR. Image quality was assessed subjectively and objectively at six levels. Independent clinical interpretations by two fully blinded radiologists were compared with reference standard consensus reviews by two nonblinded readers who had access to clinical information, previous imaging studies, and medical records. RESULTS A 74.7% average radiation dose reduction was seen: low-dose modified-protocol effective dose, 1.61 ± 1.18 mSv (size-specific-dose-estimate, 2.47 ± 1.21 mGy); conventional-protocol effective dose, 6.05 ± 2.84 mSv (size-specific-dose-estimate, 9.25 ± 2.9 mGy). Image quality assessment yielded 9372 data points. Objective noise on modified-protocol MBIR images was superior (p < 0.05) to that with the conventional protocol at three of six levels and comparable at the other three levels. Modified-protocol images were superior to conventional-protocol ASIR images (p < 0.05 in all cases) for subjective noise, spatial resolution, contrast resolution, streak artifact, and diagnostic acceptability on coronal reconstructions. Axial diagnostic acceptability was superior for conventional-protocol ASIR (p = 0.76). For both readers, modified-protocol MBIR clinical readings agreed more closely with reference standard readings than did conventional-protocol ASIR readings with regard to bowel wall disease assessment (κ = 0.589 and 0.700 vs 0.583 and 0.564). Overall Crohn disease activity grade (κ = 0.549 and 0.441 vs 0.315 and 0.596) and detection of acute complications (κ = 1.0 and 0.689 vs 0.896 and 0.896) were comparable when evaluated on conventional-protocol ASIR and modified-protocol MBIR images. CONCLUSION Low-dose CT enterography with MBIR yields images that are comparable to or superior to conventional images.
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23
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Zakeri N, Pollok RCG. Diagnostic imaging and radiation exposure in inflammatory bowel disease. World J Gastroenterol 2016; 22:2165-2178. [PMID: 26900282 PMCID: PMC4734994 DOI: 10.3748/wjg.v22.i7.2165] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/02/2015] [Accepted: 12/14/2015] [Indexed: 02/06/2023] Open
Abstract
Diagnostic imaging plays a key role in the diagnosis and management of inflammatory bowel disease (IBD). However due to the relapsing nature of IBD, there is growing concern that IBD patients may be exposed to potentially harmful cumulative levels of ionising radiation in their lifetime, increasing malignant potential in a population already at risk. In this review we explore the proportion of IBD patients exposed to high cumulative radiation doses, the risk factors associated with higher radiation exposures, and we compare conventional diagnostic imaging with newer radiation-free imaging techniques used in the evaluation of patients with IBD. While computed tomography (CT) performs well as an imaging modality for IBD, the effective radiation dose is considerably higher than other abdominal imaging modalities. It is increasingly recognised that CT imaging remains responsible for the majority of diagnostic medical radiation to which IBD patients are exposed. Magnetic resonance imaging (MRI) and small intestine contrast enhanced ultrasonography (SICUS) have now emerged as suitable radiation-free alternatives to CT imaging, with comparable diagnostic accuracy. The routine use of MRI and SICUS for the clinical evaluation of patients with known or suspected small bowel Crohn’s disease is to be encouraged wherever possible. More provision is needed for out-of-hours radiation-free imaging modalities to reduce the need for CT.
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Civitelli F, Casciani E, Maccioni F, Oliva S, Al Ansari N, Bonocore V, Cucchiara S. Use of Imaging Techniques in Inflammatory Bowel Diseases That Minimize Radiation Exposure. Curr Gastroenterol Rep 2015; 17:28. [PMID: 26122246 DOI: 10.1007/s11894-015-0448-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The use of imaging in the management of inflammatory bowel disease (IBD) has grown exponentially in the last few years. This has raised concerns about the risk of high cumulative level of radiation exposure from medical imaging in IBD patients during their lifetime, especially when the disease begins in pediatric age. Physicians caring for IBD children should be aware of the malignant potential of ionizing radiation and of the availability of alternative radiation-free techniques such as magnetic resonance imaging (MRI) and ultrasonography (US), in order to use them whenever possible. This review will focus on the value of US and MRI in pediatric IBD.
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Affiliation(s)
- Fortunata Civitelli
- Department of Pediatrics, Pediatric Gastroenterology & Liver Unit, Sapienza University of Rome, Viale Regina Elena, 324-00161, Rome, Italy,
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Jung YS, Park DI, Hong SN, Kim ER, Kim YH, Cheon JH, Eun CS, Han DS, Lee CK, Kim JH, Huh KC, Yoon SM, Song HJ, Shin JE, Jeon SR. Predictors of Urgent Findings on Abdominopelvic CT in Patients with Crohn's Disease Presenting to the Emergency Department. Dig Dis Sci 2015; 60:929-35. [PMID: 25064212 DOI: 10.1007/s10620-014-3298-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 07/14/2014] [Indexed: 12/19/2022]
Abstract
BACKGROUND Patients with Crohn's disease (CD) are frequently exposed to diagnostic radiation, mainly as a result of abdominopelvic computed tomography (APCT) examinations. However, there are limited data on the impact of APCT on clinical management in this population. AIM To investigate clinical predictors of urgent findings on APCT in patients with CD who presented to the emergency department (ED). METHODS A retrospective study was performed among patients with CD presenting to 11 EDs with a gastrointestinal complaint. The primary outcome, OPAN (obstruction, perforation, abscess, or non-CD-related urgent findings), included new or worsening CD-related urgent findings or non-CD-related urgent findings that required urgent or emergency treatment. Variables with P < 0.1 in univariate analyses were included in a multivariable logistic regression model. RESULTS Of the 266 APCTs performed, 103 (38.7 %) had OPAN and 113 (42.5 %) required changes in treatment plan. Stricturing or penetrating disease (odds ratio [OR] 2.72, 95 % confidence interval [CI] 1.21-6.13), heart rate >100 beats/min (OR 2.33, 95 % CI 1.10-4.93), leukocyte count >10,000/mm(3) (OR 4.38, 95 % CI 2.10-9.13), and CRP >2.5 mg/dL (OR 3.11, 95 % CI 1.23-7.86) were identified as the independent predictors of OPAN, whereas biologic agent use (OR 0.37; 95 % CI 0.15-0.90) was identified as the negative predictor in patients with CD. CONCLUSIONS Only 39 % of the APCTs performed in the ED among patients with CD showed urgent findings. Stricturing or penetrating disease, tachycardia, leukocytosis, and high CRP level were predictors of urgent CT findings, while biologic agent use was a negative predictor. To reduce unnecessary radiation exposure, the selection process for CD patients referred for APCT must be improved.
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Affiliation(s)
- Yoon Suk Jung
- Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 108, Pyung-Dong, Jongro-Ku, Seoul, 110-746, Korea
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Quon JS, Quon PR, Lim CS, Abdeen N, Schieda N. Magnetic resonance enterography in post-operative inflammatory bowel disease. ACTA ACUST UNITED AC 2015; 40:1034-49. [PMID: 25776203 DOI: 10.1007/s00261-015-0392-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To describe the role of magnetic resonance enterography (MRE) in patients with inflammatory bowel disease (IBD), and to review the expected post-operative appearance, as well as, potential surgical complications in this unique patient population. CONCLUSION MRE compares favorably to CT Enterography (CTE) in terms of overall diagnostic accuracy and may provide better functional assessment of the small bowel through cine-MRI, diffusion-weighted imaging and dynamic contrast-enhancement. In the post-operative population, MRE provides critical information including: normal post-surgical anatomy, chronic strictures vs. active inflammation and disease/treatment-related complications. The post-operative IBD patient undergoes frequent repeated imaging and MRE may significantly reduce cumulative radiation dose while providing similar or improved diagnostic accuracy compared to CTE. MRE should be considered as an alternative imaging modality in this population.
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Affiliation(s)
- Jeffrey S Quon
- Department of Medical Imaging, The Ottawa Hospital, The University of Ottawa, 1053 Carling Avenue, Ottawa, ON, K1Y 4E9, Canada,
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Estay C, Simian D, Lubascher J, Figueroa C, O'Brien A, Quera R. Ionizing radiation exposure in patients with inflammatory bowel disease: are we overexposing our patients? J Dig Dis 2015; 16:83-9. [PMID: 25420751 DOI: 10.1111/1751-2980.12213] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Imaging techniques are accurate and reliable in diagnosing inflammatory bowel disease (IBD). However, the main disadvantage of computed tomography (CT) compared with magnetic resonance imaging (MRI) is radiation exposure and the potential risk of cancer, especially since IBD patients are at increased risk of malignancies. This study aims to quantify and characterize effective radiation exposure of IBD patients. METHODS A cohort of IBD patients were retrospectively enrolled in the Clínica las Condes IBD registry between 2011 and 2013. High cumulative radiation exposure (CED) was defined as ≥-50 mSv. RESULTS A total of 325 IBD patients were enrolled in our registry, including 243 (74.8%) with UC and 82 (25.2%) with CD. The patients with CD were more commonly to reach a high CED seen compared with those with UC (19.5% vs 2.5%). Higher exposure to radiation was associated with longer duration of disease, ileal involvement, stricturing behavior, treatments with steroids and biological agents and CD-related hospitalization or surgery. Abdominopelvic CT and enteroclysis CT accounted for 93.6% of total CED. CONCLUSIONS A high percentage of IBD patients are exposed to high CED. Radiation-free cross-sectional examinations, such as MRI, should be used, especially in young patients, those who have undergone prior surgery and those with severe IBD.
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Affiliation(s)
- Camila Estay
- Academic Research Unit, Clínica las Condes, Santiago, Chile; Resident of Internal Medicine, Universidad de Los Andes, Santiago, Chile
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Anti-TNF therapy is associated with a reduction in radiation exposure in patients with Crohn's disease. Eur J Gastroenterol Hepatol 2015; 27:13-9. [PMID: 25341058 DOI: 10.1097/meg.0000000000000222] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Patients with Crohn's disease (CD) are often exposed to ionizing diagnostic radiation with inherent risks from protracted exposure. Meanwhile, bolder definitions of disease control have changed treatment paradigms, with earlier introduction of biological therapy in many. Our aim was to compare the effective radiation dose a year before and 1 and 3 years after initiating anti-tumor necrosis factor (anti-TNF) or corticosteroid therapy. MATERIALS AND METHODS We performed a retrospective review of CD patients treated with anti-TNF (infliximab or adalimumab) or corticosteroids at our institution from 2005 to 2012. RESULTS We analyzed 170 patients with CD (114 treated with anti-TNF and 56 treated with corticosteroid). Between the year preceding and the year following therapy, a significant decrease in the mean number of radiology studies (-2.0 vs. -0.2, P=0.001) and the cumulative radiation dose (-3.1 vs. +0.3 mSv, P=0.01) was seen in the anti-TNF group when compared with the steroid group. Between the year preceding therapy and 3 years following therapy, a significant increase in the mean number of radiology studies (+2.3 vs. +0.3, P=0.003) and the cumulative radiation dose (+6.8 vs. +1.3 mSv, P=0.003) was seen in the steroid group when compared with the anti-TNF group. After adjusting for predictors of high diagnostic radiation exposure, the anti-TNF-treated group had a decrease in the number of imaging studies by 2 within a year of therapy (P<0.001). CONCLUSION Anti-TNF but not corticosteroid therapy is associated with a significant reduction in diagnostic radiation exposure a year after treatment, which persisted after 3 years.
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Govani SM, Guentner AS, Waljee AK, Higgins PDR. Risk stratification of emergency department patients with Crohn's disease could reduce computed tomography use by nearly half. Clin Gastroenterol Hepatol 2014; 12:1702-7.e3. [PMID: 24642110 PMCID: PMC4164599 DOI: 10.1016/j.cgh.2014.02.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 01/14/2014] [Accepted: 02/19/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Computed tomography (CT) is a useful tool for assessing disease activity and excluding complications in patients with Crohn's disease (CD). However, excessive radiation increases risk for malignancy. We aimed to identify automatable algorithms with high negative predictive values for significant CT findings in patients with CD who present at the emergency department. METHODS We conducted a retrospective review of a tertiary center's medical records to identify adults diagnosed with CD who presented from 2000 through 2011. Logistic regression was used to model complications (perforations, abscesses, or other serious findings) and inflammation. RESULTS There were 1095 visits made by 613 individuals that included a CT scan within 24 hours of arrival. The average number of CT scans was 1.8 (range, 1-31). Complications of CD were observed in 16.8% of CT scans, inflammation in 54.5%, and new/worse findings in 67.2%. On the basis of 10-fold cross-validation, the area under the receiver operating characteristic curve value for the complications model was 0.80 (95% confidence interval, 0.74-0.86) and for the inflammation model was 0.71 (95% confidence interval, 0.68-0.74). Scanning only patients with model-predicted complications would reduce scans by 43.0%, with a miss rate of 0.8% (4 of 491). CONCLUSIONS Patients presenting to the emergency department with CD are frequently assessed by CT. However, no significant findings are observed in 32.8%, and only 17% have complications from CD. We created models to identify patients not likely to have significant findings from CT with high negative predictive values; these could aid physicians in avoiding CT scans for many patients. Studies are needed to validate these models beyond a single center.
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Affiliation(s)
- Shail M Govani
- Division of Gastroenterology, Ann Arbor, Michigan; Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Amanda S Guentner
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Akbar K Waljee
- Division of Gastroenterology, Ann Arbor, Michigan; Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan; Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan
| | - Peter D R Higgins
- Division of Gastroenterology, Ann Arbor, Michigan; Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan.
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Radiation exposure in gastroenterology: improving patient and staff protection. Am J Gastroenterol 2014; 109:1180-94. [PMID: 24842339 DOI: 10.1038/ajg.2014.122] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/30/2014] [Indexed: 12/11/2022]
Abstract
Medical imaging involving the use of ionizing radiation has brought enormous benefits to society and patients. In the past several decades, exposure to medical radiation has increased markedly, driven primarily by the use of computed tomography. Ionizing radiation has been linked to carcinogenesis. Whether low-dose medical radiation exposure will result in the development of malignancy is uncertain. This paper reviews the current evidence for such risk, and aims to inform the gastroenterologist of dosages of radiation associated with commonly ordered procedures and diagnostic tests in clinical practice. The use of medical radiation must always be justified and must enable patients to be exposed at the lowest reasonable dose. Recommendations provided herein for minimizing radiation exposure are based on currently available evidence and Working Party expert consensus.
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Lim YJ. Does radiation exposure from abdominal computed tomography increase cancer risk in patients with inflammatory bowel disease and Behçet disease? Gut Liver 2014; 8:333-4. [PMID: 25071895 PMCID: PMC4113052 DOI: 10.5009/gnl.2014.8.4.333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Yun Jeong Lim
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, Korea
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Affiliation(s)
- Mark Flasar
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Maryland School of Medicine, 100 North Greene Street, Lower Level, Baltimore, MD, 21201, USA,
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Hou JK, Malaty HM, Thirumurthi S. Radiation exposure from diagnostic imaging studies among patients with inflammatory bowel disease in a safety-net health-care system. Dig Dis Sci 2014; 59:546-53. [PMID: 24026402 DOI: 10.1007/s10620-013-2852-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 08/20/2013] [Indexed: 12/15/2022]
Abstract
BACKGROUND/AIMS Radiographic imaging studies are important in the management of patients with inflammatory bowel disease (IBD), but are associated with radiation exposure. IBD patients in a safety-net health-care system may be at risk of high exposure to radiation. Our purpose was to identify associations of high-dose radiation exposure among an ethnically diverse cohort of IBD patients in a safety-net health-care system. METHODS A study was performed on patients with IBD receiving care from the Harris County Hospital District. Radiation exposure was calculated using total number of imaging studies performed between from 2000 and 2010 and estimates of radiation dose per study. Associations of high-dose radiation exposure, defined as a cumulative effective dose (CED) >50 mSv, were identified by using univariate and multivariate logistic regression. RESULTS The study cohort of 278 patients with IBD was ethnically diverse, with 30 % Caucasian, 44 % African-American, and 26 % Hispanic. The median CED was 10.40 mSv (SD 20.02). Annualized radiation doses were 3.45 mSv/year among patients with Crohn's disease (CD) and 1.27 mSv/year among patients with ulcerative colitis, p < 0.02. Approximately 13 % of IBD patients received a CED >50 mSv. There were no differences in radiation exposure based on age, gender, or race/ethnicity. CONCLUSIONS A small proportion of IBD patients in a safety-net health-care system received high doses of diagnostic radiation exposure. Use of diagnostic imaging studies that limit radiation exposure should be encouraged.
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Affiliation(s)
- Jason K Hou
- Houston VA HSR&D Center of Excellence; Michael E. DeBakey Veterans Affairs Hospital, 1709 Dryden Road, Suite 8.40, MS: BCM 620, Houston, TX, 77030, USA,
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Jung YS, Park DI, Moon CM, Park SJ, Hong SP, Kim TI, Kim WH, Cheon JH. Radiation exposure from abdominal imaging studies in patients with intestinal Behçet disease. Gut Liver 2013; 8:380-7. [PMID: 25071902 PMCID: PMC4113057 DOI: 10.5009/gnl.2014.8.4.380] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 06/25/2013] [Accepted: 07/05/2013] [Indexed: 12/20/2022] Open
Abstract
Background/Aims Recently, several studies have revealed that diagnostic imaging can result in exposure to harmful levels of ionizing radiation in inflammatory bowel disease patients. However, the extent of radiation exposure in intestinal Behcet disease (BD) patients has not been documented. The aim of this study was to estimate the radiation exposure from abdominal imaging studies in intestinal BD patients. Methods Patients with a diagnosis of intestinal BD established between January 1990 and March 2012 were investigated at a single tertiary academic medical center. The cumulative effective dose (CED) was calculated retrospectively from standard tables and by counting the number of abdominal imaging studies performed. High exposure was defined as CED >50 mSv. Results In total, 270 patients were included in the study. The mean CED was 41.3 mSv, and 28.1% of patients were exposed to high levels of radiation. Computed tomography (CT) accounted for 81.7% of the total effective dose. In multivariate analyses, predictors of high radiation exposure were azathioprine/6-mercaptopurine use, surgery, and hospitalization. Conclusions Approximately a quarter of intestinal BD patients were exposed to harmful levels of diagnostic radiation, mainly from CT examination. Clinicians should reduce the number of unnecessary CT examinations and consider low-dose CT profiles or alternative modalities such as magnetic resonance enterography.
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Affiliation(s)
- Yoon Suk Jung
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea ; Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dong Il Park
- Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chang Mo Moon
- Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo Jung Park
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Pil Hong
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Tae Il Kim
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Won Ho Kim
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Hee Cheon
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea
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Chatu S, Poullis A, Holmes R, Greenhalgh R, Pollok RCG. Temporal trends in imaging and associated radiation exposure in inflammatory bowel disease. Int J Clin Pract 2013; 67:1057-65. [PMID: 24073979 DOI: 10.1111/ijcp.12187] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Accepted: 04/10/2013] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES Increasing use of diagnostic imaging in inflammatory bowel disease (IBD) has led to concerns about the malignant potential of ionising radiation in a cohort that have an increased lifetime risk of gastrointestinal malignancy. The aim was to quantify radiation exposure in IBD patients referred from primary care, determine predictors of high exposure and evaluate temporal trends in diagnostic imaging over a 20-year period. METHODS This was a retrospective cohort study whereby IBD patients were recruited from the outpatient clinic and evaluated retrospectively. The total cumulative effective dose (CED) received from tests was calculated for each subject. Cox regression was performed to assess factors associated with potentially harmful levels of ionising radiation defined as total CED > 50 milli-sieverts (mSv; equivalent to five CT abdomen scans). RESULTS The cohort included 415 patients. Median total CED was 7.2 mSv (IQR: 3.0-22.7) in Crohn's disease and 2.8 mSv (IQR: 0.8-8.9) in ulcerative colitis patients, respectively. A total of 32 patients (8%) received a CED > 50 mSv. A history of IBD-related surgery was associated with high exposure (HR 7.7). During the study period, usage of abdominal CT increased by 310%. CONCLUSION Approximately 1 in 13 patients in the study cohort were exposed to potentially harmful levels of ionising radiation. Strategies to minimise exposure to diagnostic medical radiation in IBD patients are required.
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Affiliation(s)
- S Chatu
- Department of Gastroenterology, St George's Hospital NHS Trust, London, UK
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Cumulative radiation dose from medical imaging in chronic adult patients. Am J Med 2013; 126:480-6. [PMID: 23541374 DOI: 10.1016/j.amjmed.2012.10.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Revised: 10/29/2012] [Accepted: 10/30/2012] [Indexed: 11/22/2022]
Abstract
Chronic patients require ongoing care that results in repeated imaging and exposure to ionizing radiation for both diagnostic and therapeutic purposes. This is of concern due to the long-term effects of radiation exposure, namely the association between radiation and increased cancer risk. In this study, the scientific literature on cumulated dose of radiation accrued from medical imaging by 4 cohorts of chronic patients (cardiac disease, end-stage kidney disease, inflammatory bowel disease, and patients undergoing endovascular aortic repair) was systematically reviewed. We found that the cumulative effective dose is moderate in cardiac and inflammatory bowel disease patients, high in end-stage kidney disease patients, and very high in endovascular aortic repair patients. We concluded that radiation burden of medical imaging is high in selected cohorts of chronic patients. Efforts should be implemented to reduce this cumulative dose and its potential attendant risks.
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Giles E, Barclay AR, Chippington S, Wilson DC. Systematic review: MRI enterography for assessment of small bowel involvement in paediatric Crohn's disease. Aliment Pharmacol Ther 2013; 37:1121-31. [PMID: 23638954 DOI: 10.1111/apt.12323] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 12/31/2012] [Accepted: 04/07/2013] [Indexed: 12/15/2022]
Abstract
BACKGROUND Barium meal enteroclysis (BM) is the recommended imaging technique for small bowel inaccessible by ileo-colonoscopy when diagnosing paediatric-onset inflammatory bowel disease, but it has poor sensitivity and involves ionising radiation. MRI enterography (MRE) is an alternative methodology. AIMS To critically appraise the published evidence on MRE in the assessment of Paediatric inflammatory bowel disease by systematic review. METHODS Review of all English language data reporting MRE for the investigation of patients <18 years with known or suspected IBD. Primary searches of Medline (Jan 1950-April 2012), Cinahl (1966-April 2012) and Pubmed (Jan 1950-April 2012) were performed using keyword and MeSH terms; IBD; Magnetic resonance imaging; small bowel imaging; EMBASE was then searched. Two authors independently assessed the quality of studies using the quality assessment of diagnostic accuracy studies tool. RESULTS Searches yielded 930 035 hits, combination word searches limited to 1983 titles. Fifty-two studies were fully reviewed, 41 were excluded due to lack of paediatric data. Eleven studies of 496 children were included. All studies used endoscopy as the reference test. 10/496 patients required jejunal intubation for bowel preparation. Meta-analysis of six comparable studies gave a pooled sensitivity and specificity for MRE detection of active terminal ileal Crohn's disease of 84% and 97% respectively. Studies displayed heterogeneity in bowel preparation, scanning technique, reporting methodology and timing of ileo-colonoscopy in relation to MRE. In three studies comparing BM, MRE had greater sensitivity and specificity. CONCLUSIONS MRE is a sensitive and specific tool for diagnosis in paediatric inflammatory bowel disease. Technical considerations require refinement and standardisation; however, MRE has no radiation. Current data suggest that MRE should supersede BM as the SB imaging technique in centres with appropriate expertise.
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Affiliation(s)
- E Giles
- Paediatric Gastroenterology, Barts and the London School of Medicine and Dentistry, London, UK
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Butcher RO, Nixon E, Sapundzieski M, Filobbos R, Limdi JK. Radiation exposure in patients with inflammatory bowel disease--primum non nocere? Scand J Gastroenterol 2012; 47:1192-9. [PMID: 22827741 DOI: 10.3109/00365521.2012.706829] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Patients with Inflammatory Bowel disease (IBD) are frequently exposed to diagnostic medical radiation for the diagnosis and evaluation of their disease. Despite increasing awareness of the potentially serious downstream effects, few studies have quantified radiation exposure in IBD patients. METHODS We conducted a retrospective review of 280 consecutive patients attending IBD clinics at our hospital. All incidences of diagnostic medical radiation from initial diagnosis until 30 June 2010 inclusive were recorded. The radiation dose for each procedure was obtained from standardized tables and the effective dose for each procedure calculated by multiplying this value by the number of procedures during the study period. The sum of doses received was the cumulative effective dose. RESULTS The mean and median cumulative effective radiation doses were 10.17 mSv and 4.12 mSv respectively. Crohn's disease patients had significantly higher cumulative effective radiation exposure than UC patients (p < 0.001) with exposure exceeding 10 mSv in 58.3%, 25 mSv in 18.1% and 50 mSv in 6.3%, respectively. Smoking status, disease duration, and previous surgery were significant predictors for increased radiation exposure even after adjusting for other predictors. 47 small bowel magnetic resonance (MR) studies were undertaken as an alternative to ionising radiation in the last 3 years. CONCLUSIONS Patients with IBD, particularly those with Crohn's disease, are exposed to significant amounts of diagnostic medical radiation in their lifetime. Clinicians must remain vigilant to the risk of cumulative radiation when evaluating these patients and consider non-ionizing alternatives such as intestinal ultrasound and MR imaging where clinically appropriate.
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Affiliation(s)
- Rhys Owain Butcher
- Division of Gastroenterology, The Pennine Acute Hospitals NHS Trust, Manchester, UK
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Craig O, O'Neill S, O'Neill F, McLaughlin P, McGarrigle A, McWilliams S, O'Connor O, Desmond A, Walsh EK, Ryan M, Maher M, Shanahan F. Diagnostic accuracy of computed tomography using lower doses of radiation for patients with Crohn's disease. Clin Gastroenterol Hepatol 2012; 10:886-92. [PMID: 22469992 DOI: 10.1016/j.cgh.2012.03.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 02/29/2012] [Accepted: 03/19/2012] [Indexed: 12/22/2022]
Abstract
BACKGROUND & AIMS Magnetic resonance and ultrasonography have increasing roles in the initial diagnosis of Crohn's disease, but computed tomography (CT) with positive oral contrast agents is most frequently used to identify those with acute extramural complications. However, CT involves exposure of patients to radiation. We prospectively compared the diagnostic accuracy of low-dose CT (at a dose comparable to that used to obtain an abdominal radiograph) with conventional-dose CT in patients with active Crohn's disease. METHODS Low and conventional dose CT of the abdomen and pelvis were acquired from 50 patients with Crohn's disease, referred from an inflammatory bowel disease service (20 male; median age, 34 years). Acute complications of Crohn's disease were suspected. Iterative reconstruction was performed on all CT datasets to facilitate dose reduction. Three radiologists reviewed the low-dose CT images before the conventional-dose CT images. RESULTS The median effective dose (interquartile range) of radiation for the low-dose CT was reduced by 72% from that of conventional CT: from 3.5 mSv (3-5.08 mSv) to 0.98 mSv (0.77-1.42 mSv) (P < .001). As expected, the quality indexes of the low-dose images were inferior to those of the conventional-dose images, but no clinically significant diagnostic findings were missed with low-dose imaging. Follow-up CT examinations were recommended for 5 patients; 1 had a cervical tumor, 1 had a pancreatic lesion, and 3 had intra-abdominal abscess. In each case, the image obtained by low-dose CT was considered sufficient for diagnosis. CONCLUSIONS Although low-dose CT images are of lower quality than images obtained with conventional doses of radiation, no clinically significant diagnostic findings were missed from low-dose CT images of patients with Crohn's disease. The low-dose CT was obtained at a median effective dose equivalent to 1.4 abdominal radiographs.
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Affiliation(s)
- Orla Craig
- Departments of Medicine and Radiology, Cork University Hospital and Alimentary Pharmabiotic Centre, University College Cork, National University of Ireland, Cork, Ireland
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Desmond AN, McWilliams S, Maher MM, Shanahan F, Quigley EM. Radiation exposure from diagnostic imaging among patients with gastrointestinal disorders. Clin Gastroenterol Hepatol 2012; 10:259-65. [PMID: 22083022 DOI: 10.1016/j.cgh.2011.11.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 10/13/2011] [Accepted: 11/02/2011] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS There are concerns about levels of radiation exposure among patients who undergo diagnostic imaging for inflammatory bowel disease (IBD), compared with other gastrointestinal (GI) disorders. We quantified imaging studies and estimated the cumulative effective dose (CED) of radiation received by patients with organic and functional GI disorders. We also identified factors and diagnoses associated with high CEDs. METHODS We analyzed data from 2590 patients who were diagnosed with GI disorders at a tertiary gastroenterology center from January 1999-January 2009 on the basis of International Statistical Classification of Diseases and Health-related Problems, 10th revision and Rome III criteria. High annual CED and high total CED were defined as figures exceeding the 90th percentile for the population. RESULTS Diagnostic imaging was performed on 57% of the patients (1429 of 2509). High annual CEDs (>9.6 millisieverts/annum) were independently associated with Crohn's disease (odds ratio [OR], 5.3; P < .0001), organic small bowel disease (OR, 2.6; P < .005), and functional disorders of childhood and adolescence (OR, 9.8; P < .005). High total CEDs (>30.8 millisieverts) were independently associated with Crohn's disease (OR, 81.9; P < .0001), ulcerative colitis (OR, 19.0; P < .0001), indeterminate colitis (OR, 7.5; P < .0005), and the following non-IBD diagnoses: organic small bowel disorders (OR, 12.5; P < .0001), organic hepatic disorders (OR, 3.6; P < .01), and functional disorders of childhood and adolescence (OR, 13.8; P = .02). CONCLUSIONS Higher levels of annual and total diagnostic radiation exposure are associated with IBD and with other organic and functional GI disorders. Evidence-based guidelines for image analysis of patients with organic and functional gastrointestinal disorders, especially those that reduce radiation exposure, are needed.
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Affiliation(s)
- Alan N Desmond
- Department of Gastroenterology, Cork University Hospital, Cork, Ireland.
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Chatu S, Subramanian V, Pollok RCG. Meta-analysis: diagnostic medical radiation exposure in inflammatory bowel disease. Aliment Pharmacol Ther 2012; 35:529-39. [PMID: 22239831 DOI: 10.1111/j.1365-2036.2011.04975.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 11/28/2011] [Accepted: 12/13/2011] [Indexed: 12/12/2022]
Abstract
BACKGROUND Diagnostic imaging plays a pivotal role in the diagnosis and management of inflammatory bowel disease (IBD); however, increasing use has led to concerns about the malignant potential of ionising radiation. Several studies have demonstrated that diagnostic imaging can result in exposure to potentially harmful levels of ionising radiation in IBD patients. AIM To determine the pooled prevalence of increased exposure and pooled odds ratio of risk factors associated with exposure to potentially harmful levels of diagnostic medical radiation. METHODS We searched Medline, EMBASE, CINHAL and reference lists of identified articles, without language restrictions in October 2011. RESULTS Six studies with 1704 participants provided data on the proportion of patients receiving potentially harmful levels of radiation defined as ≥50 milli-sieverts (mSv)-equivalent to 5 CT abdomen scans. The pooled prevalence was 8.8% (95% CI 4.4-16.8) for IBD patients and 11.1% (95% CI 5.7-20.5%) and 2% (95% CI 0.8-4.9%) for Crohn's disease and ulcerative colitis patients respectively. Five studies involving 2627 participants provided data for risk factors. IBD-related surgery and corticosteroid use were significant with pooled adjusted odds ratio of 5.4 (95% CI 2.6-11.2) and 2.4 (95% CI 1.7-3.4) respectively. CONCLUSIONS About 1 in 10 patients may be exposed to potentially harmful levels of diagnostic medical radiation. Corticosteroid use and IBD related surgery increased this risk. Strategies to reduce radiation exposure while assessing disease activity need to be considered.
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Affiliation(s)
- S Chatu
- Department of Gastroenterology, St George's Hospital NHS Trust, London, UK.
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Diagnostic accuracy of small intestine ultrasonography using an oral contrast agent in Crohn's disease: comparative study from the UK. Clin Radiol 2011; 67:553-9. [PMID: 22212635 DOI: 10.1016/j.crad.2011.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Revised: 11/09/2011] [Accepted: 11/17/2011] [Indexed: 12/16/2022]
Abstract
AIM To evaluate the usefulness of small intestine contrast-enhanced ultrasonography (SICUS) using an oral contrast agent in routine clinical practice by assessing the level of agreement with the established techniques, small bowel follow-through (SBFT) and computed tomography (CT), and diagnostic accuracy compared with the final diagnosis in the detection of small bowel Crohn's disease (CD) and luminal complications in a regional centre. MATERIALS AND METHODS All symptomatic known or suspected cases of CD who underwent SICUS were retrospectively reviewed. The level of agreement between SICUS and SBFT, CT, histological findings, and C-reactive protein (CRP) level was assessed using kappa (κ) coefficient. Sensitivity was demonstrated using the final diagnosis as the reference standard defined by the outcome of clinical assessment, follow-up, and results of investigations other than SICUS. RESULTS One hundred and forty-three patients underwent SICUS of these 79 (55%) were female. Eighty-six (60%) were known to have CD and 57 (40%) had symptoms suggestive of intestinal disease with no previous diagnosis. Forty-six (55%) of the known CD patients had had at least one previous surgical resection. The sensitivity of SICUS in detecting active small bowel CD in known CD and undiagnosed cases was 93%. The kappa coefficient was 0.88 and 0.91 with SBFT and CT, respectively. SICUS detected nine patients who had one or more small bowel strictures and six patients with a fistula all detected by SBFT or CT. CONCLUSION SICUS is not only comparable to SBFT and CT but avoids radiation exposure and should be more widely adopted in the UK as a primary diagnostic procedure and to monitor disease complications in patients with CD.
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Dayan B, Turner D. Pediatric radiation doses and IBD. Inflamm Bowel Dis 2011; 17:2594-5. [PMID: 21509911 DOI: 10.1002/ibd.21726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Accepted: 03/16/2011] [Indexed: 12/09/2022]
Affiliation(s)
- Bosmat Dayan
- Pediatric Gastroenterology and Nutrition Unit, Shaare Zedek Medical Center, Jerusalem, Israel
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Sauer CG, Kugathasan S, Martin DR, Applegate KE. Medical radiation exposure in children with inflammatory bowel disease estimates high cumulative doses. Inflamm Bowel Dis 2011; 17:2326-32. [PMID: 21987300 DOI: 10.1002/ibd.21626] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Accepted: 12/06/2010] [Indexed: 12/15/2022]
Abstract
BACKGROUND Children with inflammatory bowel disease (IBD) undergo imaging using ionizing radiation and may be exposed to high cumulative radiation. We hypothesized that children with IBD have high exposure to radiation from medical imaging. METHODS An Institutional Review Board (IRB)-approved retrospective chart review from 2002-2008 was performed on all patients with IBD. Radiographic studies performed were recorded and exposure for each study was estimated. RESULTS A total of 117 children with IBD (86 Crohn's disease [CD], 31 ulcerative colitis [UC]) were evaluated. The median current exposure was 15.1 mSv in CD and 7.2 mSv in UC (P = 0.005). Computed tomography (CT) scan and small bowel follow-through (SBFT) were responsible for 43% and 36% of all radiation exposures, respectively. The rate of radiation was higher in CD compared to UC (4.3 versus 2.2 mSv/yr). In CD, the rate of exposure was highest in the first 3 years of diagnosis (8.2 mSv/yr), and no different between the 3-5 year follow-up and 5+ year follow-up groups (3.8 versus 4.3 mSv/yr). Using the annual dose rate in those followed for more than 3 years, an estimated 47 out of 78 (60%) children (40 CD, 7 UC) would exceed 50 mSv by 35 years of age. CONCLUSIONS Radiation exposure from medical imaging is high in a subset of children diagnosed with IBD. Estimation of radiation exposure at age 35 suggests a significant portion of children with IBD will have high radiation exposure in their lifetime. Nonionizing imaging such as magnetic resonance imaging (MRI) and ultrasound should be offered to children with IBD as an alternative to current imaging that employs radiation.
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Affiliation(s)
- Cary G Sauer
- Division of Pediatric Gastroenterology Hepatology and Nutrition, Emory University School of Medicine, Children's Hospital of Atlanta, Atlanta, GA, USA.
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Patients with IBD are exposed to high levels of ionizing radiation through CT scan diagnostic imaging: a five-year study. J Clin Gastroenterol 2011; 45:34-9. [PMID: 20679907 DOI: 10.1097/mcg.0b013e3181e5d1c5] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
GOALS The objective of this study was to assess the total effective dose of ionizing radiation from abdominal diagnostic imaging in patients with inflammatory bowel disease (IBD) over a 5-year period. BACKGROUND Radiation exposure from diagnostic imaging is becoming increasingly common in IBD patients, in part due the availability of computed tomography (CT). Increased risk of malignancy has been associated with radiation exposure. STUDY This is a retrospective chart review. A university-based gastroenterology database was searched for patients with a diagnosis of Crohn's disease (CD) or ulcerative colitis (UC) seen between 2003 and 2008. The cumulative ionizing radiation exposure, expressed in milli-Sieverts (mSv), was then calculated from standard tables and by counting the number of abdominal imaging studies. RESULTS Patients with CD had higher cumulative radiation exposure from diagnostic imaging than patients with UC (14.3 ± 1.45 mSv/5-y period vs. 5.9 ± 0.81 mSv/5-y period, P=0.00003). Three-quarters of the radiation exposure in both CD and UC was from CT scans. Thirty-four percent (127 of 373) of CD patients had CT scans, compared with just 20% (37 of 182) of UC patients. Importantly, 7% of CD patients were exposed to high levels of radiation (>50 mSv/5 y), in contrast to none of the UC patients. CONCLUSIONS Patients with IBD, and especially CD patients, undergo frequent diagnostic imaging and thus significant exposure to ionizing radiation. This radiation exposure reaches high levels in 7% of CD patients, mainly from CT scanning. Efforts should be made to minimize the radiation exposure from diagnostic imaging by reducing either the number of studies or radiation dose in modalities with ionizing radiation.
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Newnham E, Gearry R, Gibson P. Factors associated with radiation exposure in patients with inflammatory bowel disease. Aliment Pharmacol Ther 2010; 31:534-5. [PMID: 20078501 DOI: 10.1111/j.1365-2036.2009.04205.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Cassinotti A, Keshav S, Ardizzone S, Mortensen N, Sampietro G, Fociani P, Duca P, George B, Lazzaroni M, Manes G, Warren B, Foschi D, Vago G, Porro GB, Travis S. IBD care in Europe: A comparative audit of the inpatient management of Crohn's disease and ulcerative colitis using the national UK IBD audit tool. J Crohns Colitis 2009; 3:291-301. [PMID: 21172290 DOI: 10.1016/j.crohns.2009.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Accepted: 08/12/2009] [Indexed: 01/05/2023]
Abstract
BACKGROUND AND AIMS The National UK IBD audit tool is an electronic database created to improve the quality and safety of care for IBD patients by auditing individual patient care, service resources and organisation against national standards. We used the National UK IBD audit tool to compare the organisation and process of IBD care between services in Oxford (UK) and Milan (Italy), as a pilot study to evaluate its application outside national boundaries. METHODS Clinical and demographic data of patients with CD and UC, consecutively admitted during a 2month period, were collected and compared between the centres, to each other and to the UK IBD standards obtained by previous audit analyses performed in Oxford in 2006. RESULTS 20 and 26 patients with UC were admitted in Oxford and Milan, as well as 21 and 20 patients with CD, respectively. Most admissions in Milan were planned admissions for moderately active treatment-refractory disease. No patient died. Oxford had a higher surgery rate. Endoscopy for UC consisted mainly of colonoscopy in Milan (92%) and flexible sigmoidoscopy in Oxford (64%). In CD, Oxford data revealed a higher use of immununomodulators and CT scan, compared with higher use of bowel ultrasound in Milan. CRP was the preferred biomarker of disease activity. The following areas did not reach the standards set for the 2006 UK IBD Audit: the lack in Milan of IBD specialist nurses and few dietitian visits, as well as little attention to heparin prophylaxis and abdominal radiography in UC. Both sites paid little attention to stool cultures and revealed a high rate of active smokers in CD and little attention to bone protection in steroids users. Since the 2006 audit in Oxford, improvements include IBD specialist nurse visits, dietitian visits, number of active smokers, stool samples, prophylactic heparin, bone protection and nutritional assessment. CONCLUSIONS Consistent procedural differences between Oxford and Milan identified by audits of both UC and CD could be resolved by organisational change, with an improvement in the service. The UK IBD audit tool is an easy instrument to assess the processes and outcomes of care delivery in IBD and can be applied also outside UK.
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Affiliation(s)
- Andrea Cassinotti
- Department of Clinical Sciences, Gastroenterology Unit, L. Sacco University Hospital, Milan, Italy
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Palmer L, Herfarth H, Porter CQ, Fordham LA, Sandler RS, Kappelman MD. Diagnostic ionizing radiation exposure in a population-based sample of children with inflammatory bowel diseases. Am J Gastroenterol 2009; 104:2816-23. [PMID: 19690524 PMCID: PMC2788488 DOI: 10.1038/ajg.2009.480] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The degree of diagnostic radiation exposure in children with inflammatory bowel diseases (IBD) is largely unknown. In this study, we describe this exposure in a population-based sample of children with IBD and determine the characteristics associated with moderate radiation exposure. METHODS We ascertained radiological study use, demographic characteristics, IBD medication use, and the requirement for hospitalization, emergency department (ED) encounter, or inpatient gastrointestinal surgery among children with IBD within a large insurance claims database. Characteristics associated with moderate radiation exposure (at least one computed tomography (CT) or three fluoroscopies over 2 years) were determined using logistic regression models. RESULTS We identified 965 children with Crohn's disease (CD) and 628 with ulcerative colitis (UC). Over 24 months, 34% of CD subjects and 23% of UC subjects were exposed to moderate diagnostic radiation (odds ratio (OR) 1.71, 95% confidence interval (CI), 1.36 - 2.14). CT accounted for 28% and 25% of all studies in CD and UC subjects, respectively. For CD subjects, moderate radiation exposure was associated with hospitalization (OR 4.89, 95% CI 3.37 - 7.09), surgery (OR 2.93, 95% CI 1.59 - 5.39), ED encounter (OR 2.65, 95% CI 1.93 - 3.64), oral steroids (OR 2.25, 95% CI 1.50 - 3.38), and budesonide (OR 1.80, 95% CI 1.10 - 3.06); an inverse association was seen with immunomodulator use (OR 0.67, 95% CI 0.47 - 0.97). Except for oral steroids and immunomodulators, similar relationships were seen in UC. CONCLUSIONS A substantial proportion of children with IBD are exposed to moderate amounts of radiation as a result of diagnostic testing. This high utilization may impart long-term risk, given the chronic nature of the disease.
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Affiliation(s)
- Lena Palmer
- Department of Medicine, Division of Gastroenterology and Hepatology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Hans Herfarth
- Department of Medicine, Division of Gastroenterology and Hepatology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Carol Q. Porter
- Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Lynn A. Fordham
- Department of Radiology, University of North Carolina Chapel Hill, Chapel Hill, NC
| | - Robert S. Sandler
- Department of Medicine, Division of Gastroenterology and Hepatology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Michael D. Kappelman
- Department of Pediatrics, Division of Gastroenterology, University of North Carolina at Chapel Hill, Chapel Hill, NC
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Roberts-Thomson IC, Tucker GR, Hewett PJ, Cheung P, Sebben RA, Khoo EEW, Marker JD, Clapton WK. Single-center study comparing computed tomography colonography with conventional colonoscopy. World J Gastroenterol 2008; 14:469-73. [PMID: 18200672 PMCID: PMC2679138 DOI: 10.3748/wjg.14.469] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To compare the results from computed tomography (CT) colonography with conventional colonoscopy in symptomatic patients referred for colonoscopy.
METHODS: The study included 227 adult outpatients, mean age 60 years, with appropriate indications for colonoscopy. CT colonography and colonoscopy were performed on the same day in a metropolitan teaching hospital. Colonoscopists were initially blinded to the results of CT colonography but there was segmental unblinding during the procedure. The primary outcome measures were the sensitivity and specificity of CT colonography for the identification of polyps seen at colonoscopy (i.e. analysis by polyp). Secondary outcome measures included an analysis by patient, extracolonic findings at CT colonography, adverse events with both procedures and patient acceptance and preference.
RESULTS: Twenty-five patients (11%) were excluded from the analysis because of incomplete colonoscopy or poor bowel preparation that affected either CT colonography, colonoscopy or both procedures. Polyps and masses (usually cancers) were detected at colonoscopy and CT colonography in 35% and 42% of patients, respectively. Of nine patients with a final diagnosis of cancer, eight (89%) were identified by CT colonography as masses (5) or polyps (3). For polyps analyzed according to polyp, the overall sensitivity of CT colonography was 50% (95% CI, 39%-61%) but this increased to 71% (95% CI, 52%-85%) for polyps ≥ 6 mm in size. Similarly, specificity for all polyps was 48% (95% CI, 39%-58%) increasing to 67% (95% CI, 56%-76%) for polyps ≥ 6 mm. Adverse events were uncommon but included one colonic perforation at colonoscopy. Patient acceptance was high for both procedures but preference favoured CT colonography.
CONCLUSION: Although CT colonography was more sensitive in this study than in some previous studies, the procedure is not yet sensitive enough for widespread application in symptomatic patients.
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