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Abstract No. 529 Development of a Resident-Run IR Device Development Lab. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
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Abstract No. 543 90Y Selective Internal Radiation Therapy for Ocular Melanoma Metastatic to the Liver: Dosimetry and Response Assessment. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
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Physical and mental health impact of COVID-19 on children, adolescents, and their families: The Collaborative Outcomes study on Health and Functioning during Infection Times - Children and Adolescents (COH-FIT-C&A). J Affect Disord 2022; 299:367-376. [PMID: 34606810 PMCID: PMC8486586 DOI: 10.1016/j.jad.2021.09.090] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 09/17/2021] [Accepted: 09/26/2021] [Indexed: 01/10/2023]
Abstract
BACKGROUND The COVID-19 pandemic has altered daily routines and family functioning, led to closing schools, and dramatically limited social interactions worldwide. Measuring its impact on mental health of vulnerable children and adolescents is crucial. METHODS The Collaborative Outcomes study on Health and Functioning during Infection Times (COH-FIT - www.coh-fit.com) is an on-line anonymous survey, available in 30 languages, involving >230 investigators from 49 countries supported by national/international professional associations. COH-FIT has thee waves (until the pandemic is declared over by the WHO, and 6-18 months plus 24-36 months after its end). In addition to adults, COH-FIT also includes adolescents (age 14-17 years), and children (age 6-13 years), recruited via non-probability/snowball and representative sampling and assessed via self-rating and parental rating. Non-modifiable/modifiable risk factors/treatment targets to inform prevention/intervention programs to promote health and prevent mental and physical illness in children and adolescents will be generated by COH-FIT. Co-primary outcomes are changes in well-being (WHO-5) and a composite psychopathology P-Score. Multiple behavioral, family, coping strategy and service utilization factors are also assessed, including functioning and quality of life. RESULTS Up to June 2021, over 13,000 children and adolescents from 59 countries have participated in the COH-FIT project, with representative samples from eleven countries. LIMITATIONS Cross-sectional and anonymous design. CONCLUSIONS Evidence generated by COH-FIT will provide an international estimate of the COVID-19 effect on children's, adolescents' and families', mental and physical health, well-being, functioning and quality of life, informing the formulation of present and future evidence-based interventions and policies to minimize adverse effects of the present and future pandemics on youth.
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The collaborative outcomes study on health and functioning during infection times in adults (COH-FIT-Adults): Design and methods of an international online survey targeting physical and mental health effects of the COVID-19 pandemic. J Affect Disord 2022; 299:393-407. [PMID: 34949568 PMCID: PMC8288233 DOI: 10.1016/j.jad.2021.07.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 07/11/2021] [Indexed: 01/10/2023]
Abstract
BACKGROUND . High-quality comprehensive data on short-/long-term physical/mental health effects of the COVID-19 pandemic are needed. METHODS . The Collaborative Outcomes study on Health and Functioning during Infection Times (COH-FIT) is an international, multi-language (n=30) project involving >230 investigators from 49 countries/territories/regions, endorsed by national/international professional associations. COH-FIT is a multi-wave, on-line anonymous, cross-sectional survey [wave 1: 04/2020 until the end of the pandemic, 12 months waves 2/3 starting 6/24 months threreafter] for adults, adolescents (14-17), and children (6-13), utilizing non-probability/snowball and representative sampling. COH-FIT aims to identify non-modifiable/modifiable risk factors/treatment targets to inform prevention/intervention programs to improve social/health outcomes in the general population/vulnerable subgrous during/after COVID-19. In adults, co-primary outcomes are change from pre-COVID-19 to intra-COVID-19 in well-being (WHO-5) and a composite psychopathology P-Score. Key secondary outcomes are a P-extended score, global mental and physical health. Secondary outcomes include health-service utilization/functioning, treatment adherence, functioning, symptoms/behaviors/emotions, substance use, violence, among others. RESULTS . Starting 04/26/2020, up to 14/07/2021 >151,000 people from 155 countries/territories/regions and six continents have participated. Representative samples of ≥1,000 adults have been collected in 15 countries. Overall, 43.0% had prior physical disorders, 16.3% had prior mental disorders, 26.5% were health care workers, 8.2% were aged ≥65 years, 19.3% were exposed to someone infected with COVID-19, 76.1% had been in quarantine, and 2.1% had been COVID 19-positive. LIMITATIONS . Cross-sectional survey, preponderance of non-representative participants. CONCLUSIONS . Results from COH-FIT will comprehensively quantify the impact of COVID-19, seeking to identify high-risk groups in need for acute and long-term intervention, and inform evidence-based health policies/strategies during this/future pandemics.
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Progression and variation of competitive 100 and 200m performance at the 2021 European Swimming Championships. Sports Biomech 2021:1-15. [PMID: 34845976 DOI: 10.1080/14763141.2021.1998591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/14/2021] [Indexed: 10/19/2022]
Abstract
Competitive progressions are necessary to ensure that peak performance occurs when medals are decided. This study aimed to: i) study the coefficient of variation (CV) and performance changes (%Δ) among swimmers who participated in different rounds (i.e., heats, semi-finals and finals); ii) study the CV changes as a function of FINA-points. A total of 1447 performances were analysed in the 100 and 200 m-races during the Budapest 2021 European-Championships. Linear mixed-effects models were applied for total and split-times to obtain intra-athlete CV and %Δ. The FINA-points were studied with two-way ANOVA and Pearson's correlation assessed the relations with CV. The CV in 100 m-races was: 0.48 ± 0.21% for males and 0.50 ± 0.20% for females (Δ = -0.66%); in 200 m-races: 0.63 ± 0.36% and 0.60 ± 0.34% (Δ = -0.82%). There were differences in FINA-points between strokes and distances (p < 0.02) associated with higher CV for the 200 m-races (r = 0.37; p = 0.003), indicating changes in performance over the rounds. Swimmers' finalists performed easier during the heats by going slower in the first 50 m-lap; however, some of them would have little chance of qualifying during major championships because some events were below FINA-points world-standards.
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STANDARDIZATION OF ARTIFICIAL CHORDAL LENGTH FOR POSTERIOR LEAFLET PROLAPSE: A SIMPLIFIED APPROACH FOR MULTIPLE SCENARIOS. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Abstract No. 157 Computed tomography–guided percutaneous microwave ablation as bridging therapy for patients with hepatocellular carcinoma awaiting liver transplant: a single-center experience. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Abstract No. 23 Thermal ablation for anatomically complex renal tumors: assessment of periprocedural and treatment outcomes of microwave ablation, radiofrequency ablation, and cryoablation. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Abstract No. 557 Natural history and course of splenic artery aneurysms: experience from 200 patients over 2 decades. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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4:03 PM Abstract No. 271 Risk stratification of periprocedural complications and treatment failure for T1b renal cell carcinoma. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Abstract No. 605 Outcome of renal ablation in morbidly obese patients: technical results, procedural complications, and oncological survival. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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3:09 PM Abstract No. 265 Comparative evaluation of outcomes following microwave ablation of central versus peripheral renal tumors. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Abstract No. 496 Comparison of periprocedural outcome and health care costs associated with microwave ablation, radiofrequency ablation, and cryoablation ablative modalities for T1 renal cell carcinoma. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Abstract No. 601 Assessment of the heat-sink effect on treatment failure of microwave ablation for central renal tumors. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Abstract No. 701 Assessment of the thermal properties of absorbable gelatin powder for potential use as a tissue separator during microwave ablation procedures. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Abstract No. 603 Comparison of thermal ablative modalities for anatomically complex renal tumors: periprocedural complications and treatment outcomes. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Abstract No. 606 Thermal ablation for T1b renal cell carcinoma: comparison of procedural and therapeutic outcomes between microwave ablation, radiofrequency ablation, and cryoablation. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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04:21 PM Abstract No. 92 Therapeutic outcomes of thermal ablation for endophytic versus exophytic renal cell carcinoma. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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03:45 PM Abstract No. 88 A comparative evaluation of procedural and therapeutic outcomes of thermal ablation for T1b versus T1a renal cell carcinoma. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Abstract No. 541 Percutaneous management of acute diverticulitis: multi-institutional study of 401 patients. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Abstract No. 509 Role of machine learning-based radiomics in the prediction of local recurrence in patients undergoing ablation for metastatic hepatic lesions. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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3:36 PM Abstract No. 175 Comparison of safety and efficacy of microwave ablation vs. radiofrequency ablation for hepatocellular carcinoma. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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3:45 PM Abstract No. 126 Evaluation of a same-day radioembolization mapping and treatment protocol utilizing resin yttrium-90 microspheres for feasibility, safety, and efficacy. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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How to balance the safety and adequacy when a low adequacy is encountered during ultrasound-guided native renal biopsy? J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.1145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Local tumor control and survival after image-guided thermal ablation of adrenal gland metastases. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Computed tomography guided percutaneous microwave ablation of subcapsular tumors: assessment of efficacy and safety. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Trends in renal function following percutaneous cryoablation of renal mass in patients with and without renal compromise. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Image-guided percutaneous peritoneal and mesenteric biopsy: assessment of technical success rate and diagnostic yield at a tertiary medical center. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Percutaneous nephrostomy tube placement via trocar technique in the pediatric patient: a single-center experience. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Clinical and Molecular Predictors of Local Failure After SBRT for Liver Metastases: A Secondary Analysis of a Prospective Phase II Trial. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Interventional optical molecular imaging for percutaneous liver procedures: initial clinical trial results. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Image guided percutaneous management of abscess formation in patients with duodenal perforation following ERCP. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Orthognathic surgery: nasogastric tube responsable of the nausea and vomiting? Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Prognostic value of HIF 1α, PAK-6 and PSMB4 expression in men treated with radiation and androgen deprivation for prostate cancer. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Long-term Results of Two Prospective Bladder-sparing Trimodality Approaches for Invasive Bladder Cancer: Neoadjuvant Chemotherapy and Concurrent Radio-chemotherapy. Urology 2012; 80:1056-62. [DOI: 10.1016/j.urology.2012.07.045] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 07/27/2012] [Accepted: 07/30/2012] [Indexed: 01/27/2023]
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Abstract No. 352: The “heat sink” revisited: radiofrequency ablation of liver tumors near large hepatic vessels. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Abstract No. 113: Imaging guided percutaneous biopsy of the bladder biopsy: clinical experience with eleven patients. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Abstract No. 409: The Abernethy malformation: congenital extrahepatic portosystemic shunts. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2012.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Abstract No. 273: Assessing the effect of weight-based protocol modifications to lower dose from CT-guided liver and renal tumor ablations. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Case report. Peripancreatic intranodal haemangioma mimicking pancreatic neuroendocrine tumour: imaging and pathological findings. Br J Radiol 2011; 84:e236-9. [PMID: 22101590 DOI: 10.1259/bjr/77657029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Haemangiomas are common benign tumours that are generally detected within the skin, mucosal surfaces and soft tissues. However, intranodal haemangiomas are extremely rare and are among the benign primary vascular abnormalities of the lymph nodes that include lymphangioma, haemangioendothelioma, angiomyomatous hamartoma and haemangiomas. In this case report, we present the imaging and pathological findings of an intranodal haemangioma in the pancreatic head simulating a pancreatic neuroendocrine tumour. To the best of our knowledge, this is the first report of an intranodal haemangioma in this location.
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Abstract No. 163: Radiological image guided Suprapubic Bladder Tube (SPT) insertion: Experience with 549 patients. J Vasc Interv Radiol 2010. [DOI: 10.1016/j.jvir.2009.12.321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Radiological management of patients with urinary obstruction following urinary diversion procedures: Technical factors, complications, long-term management and outcome. Experience with 378 procedures. J Med Imaging Radiat Oncol 2008; 52:237-43. [DOI: 10.1111/j.1440-1673.2008.01953.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Effect of fatigue on the intra-cycle acceleration in front crawl swimming: A time–frequency analysis. J Biomech 2008; 41:86-92. [PMID: 17714719 DOI: 10.1016/j.jbiomech.2007.07.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2007] [Revised: 07/16/2007] [Accepted: 07/16/2007] [Indexed: 10/22/2022]
Abstract
The present study analyzes the changes in acceleration produced by swimmers before and after fatiguing effort. The subjects (n = 15) performed a 25-m crawl series at maximum speed without fatigue, and a second series with fatigue. The data were registered with a synchronized system that consisted of a position transducer (1 kHz) and a video photogrametry (50 Hz). The acceleration (ms(-2)) was obtained by the derivative analysis of the variation of the position with time. The amplitude in the time domain was calculated with the root mean square (RMS); while the peak power (PP), the peak power frequency (PPF) and the spectrum area (SA) were calculated in the frequency domain with Fourier analysis. On the one hand, the results of the temporal domain show that the RMS change percentage between series was 67.5% (p < 0.001). On the other hand, PP, PPF, and SA show significant changes (p < 0.001). PP and SA were reduced by 63.1% and 59.5%, respectively. Our results show that the acceleration analysis of the swimmer with Fourier analysis permits a more precise understanding of which propulsive forces contribute to the swimmer performance before and after fatigue appears.
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4018 POSTER Post-treatment prostate biopsies in the era of three-dimensional conformal radiotherapy. What can they teach us? EJC Suppl 2007. [DOI: 10.1016/s1359-6349(07)71086-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Dose reduction in gastrointestinal and genitourinary fluoroscopy: use of grid-controlled pulsed fluoroscopy. AJR Am J Roentgenol 2000; 175:1453-7. [PMID: 11044062 DOI: 10.2214/ajr.175.5.1751453] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE We evaluated the diagnostic accuracy of a grid-controlled fluoroscopy unit compared with a conventional continuous fluoroscopy unit for a variety of abdominal and pelvic fluoroscopic examinations. SUBJECTS AND METHODS Seventy patients (29 men and 41 women; age range, 24-78 years) were enrolled in one of seven abdominal and pelvic fluoroscopic examinations, including upper gastrointestinal series (n = 20), barium enema (n = 10), voiding cystourethrogram (n = 10), percutaneous abdominal catheter tube injection (n = 10), hysterosalpingogram (n = 10), and percutaneous needle insertion and catheter placement (nephrostomy, percutaneous biliary drainage) (n = 10). Each patient underwent at least 10 sec of continuous fluoroscopy that was randomly and blindly compared with 10-sec periods of pulsed fluoroscopy at 15, 7.5, and 3.75 frames per second. A radiologist outside the examination room, unaware of the frame rate per second, evaluated the procedure in real time on a television monitor. The radiologist assessed image quality and diagnostic acceptability using a scoring system. Statistical analysis was performed using the paired Student's t test. RESULTS For all procedures at all frame rates, we found no statistically significant superiority of one frame rate over another. For most procedures, the slower frame rates were considered equivalent to continuous fluoroscopy when the images were assessed for image quality and diagnostic confidence. CONCLUSION Our findings suggest that most abdominal and pelvic fluoroscopic procedures can be performed at substantially lower frame rates than those used for continuous fluoroscopy; adopting this procedure may lead to substantial dose savings for the patient and the fluoroscopy operator.
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Invasive bladder cancer: a single-institution experience with bladder-sparing approach. Int J Cancer 2000; 90:287-94. [PMID: 11091353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Our objective was to assess the efficacy and safety of a selective bladder-preserving approach by transurethral resection and sequential chemoradiotherapy in patients with muscle-invasive bladder cancer. From 1989 through 1997, 40 patients with biopsy-confirmed bladder cancer, clinical stages T2-4NxM0, were treated with induction by aggressive transurethral resection (TUR) and three cycles of methotrexate, cisplatin, and vinblastine (MCV) chemotherapy. Tumor response was evaluated by cystoscopy and biopsy. In complete responders, the treatment was continued by radiotherapy (60 Gy to the bladder and 50 Gy to pelvic lymph nodes). Radical cystectomy was recommended to patients with residual tumor. Clinical complete response rate to TUR and MCV chemotherapy was 70%. The 4-year actuarial overall survival rate for the whole series was 80.5%. Among 36 patients who completed chemotherapy and radiotherapy, the 4-year actuarial survival was 84%, with 82.6% surviving with their bladders intact. Freedom from local failure in complete responders to TUR-chemotherapy was 84%. Multivariate analysis revealed that the extent of initial TUR and status after TUR-chemotherapy were independent prognostic factors associated with survival and disease-free survival. This study confirms that the combination of aggressive TUR and sequential chemoradiotherapy with bladder preservation is an alternative treatment option to primary cystectomy for selected patients with invasive bladder carcinoma.
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Systematic overview of the evidence supporting the use of cerebrospinal fluid drainage in thoracoabdominal aneurysm surgery for prevention of paraplegia. Anesthesiology 2000; 93:1115-22. [PMID: 11020769 DOI: 10.1097/00000542-200010000-00037] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Acute graded hypercapnia increases collateral coronary blood flow in a swine model of chronic coronary artery obstruction. Crit Care Med 1999; 27:2729-34. [PMID: 10628618 DOI: 10.1097/00003246-199912000-00021] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To evaluate the effect of acute hypercapnia on regional myocardial blood flow in a swine model of chronic, single-vessel coronary artery obstruction. Permissive hypercapnia is being used frequently in critical care settings. One possible detrimental effect of hypercapnia is the initiation of coronary "steal" in patients with coronary artery disease. The effects of hypercapnia on collateral coronary blood flow in the setting of coronary obstruction have not been defined. DESIGN Prospective controlled experimental study. SETTING Institutional animal research facility. SUBJECTS Eight juvenile swine weighing 25-30 kg. INTERVENTIONS Collateral coronary circulation was induced in eight piglets by banding the proximal left anterior descending coronary artery for 8-10 wks followed by total ligation. Graded hypercapnia (mean Paco2, 81 torr [10.80 kPa; Paco2 = 81 torr] and 127 torr [16.93 kPa; Paco2 = 127 torr]) was induced by increasing inspiratory carbon dioxide under isoflurane anesthesia (1 minimum alveolar concentration). MEASUREMENTS AND MAIN RESULTS Animals were attached to instruments to measure pulmonary and systemic hemodynamics, regional myocardial blood flow, and cardiac output. Regional myocardial blood flow was determined using radiolabeled microspheres. Cardiac output, mean arterial pressure, and coronary perfusion pressure were unchanged at both levels of hypercapnia compared with baseline values. Heart rate was increased at Paco2 [HI] (p < .05). Regional blood flow was increased at both levels of hypercapnia in the collateral-dependent and normally perfused myocardium (p < .05; as high as 56% for subendocardium and as high as 106% for subepicardium at Paco2 [HI]). The intercoronary blood flow ratio remained unaltered. The transmural flow ratio was reduced at Paco2 [HI] (P < .05). During hypercapnia, regional lactate extraction remained unaltered, and regional oxygen extraction was unchanged or reduced despite the increase in oxygen consumption. CONCLUSIONS In this swine model of chronic single-vessel coronary artery obstruction, acute hypercapnia does not induce coronary steal from collateral-dependent myocardium, but it does increase global coronary blood flow.
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