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Cheng SH, Lee SY, Lee HH. Harnessing the Power of Radiotherapy for Lung Cancer: A Narrative Review of the Evolving Role of Magnetic Resonance Imaging Guidance. Cancers (Basel) 2024; 16:2710. [PMID: 39123438 PMCID: PMC11311467 DOI: 10.3390/cancers16152710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 07/22/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024] Open
Abstract
Compared with computed tomography (CT), magnetic resonance imaging (MRI) traditionally plays a very limited role in lung cancer management, although there is plenty of room for improvement in the current CT-based workflow, for example, in structures such as the brachial plexus and chest wall invasion, which are difficult to visualize with CT alone. Furthermore, in the treatment of high-risk tumors such as ultracentral lung cancer, treatment-associated toxicity currently still outweighs its benefits. The advent of MR-Linac, an MRI-guided radiotherapy (RT) that combines MRI with a linear accelerator, could potentially address these limitations. Compared with CT-based technologies, MR-Linac could offer superior soft tissue visualization, daily adaptive capability, real-time target tracking, and an early assessment of treatment response. Clinically, it could be especially advantageous in the treatment of central/ultracentral lung cancer, early-stage lung cancer, and locally advanced lung cancer. Increasing demands for stereotactic body radiotherapy (SBRT) for lung cancer have led to MR-Linac adoption in some cancer centers. In this review, a broad overview of the latest research on imaging-guided radiotherapy (IGRT) with MR-Linac for lung cancer management is provided, and development pertaining to artificial intelligence is also highlighted. New avenues of research are also discussed.
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Affiliation(s)
- Sarah Hsin Cheng
- Department of Clinical Education and Training, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Shao-Yun Lee
- Department of Medical Education, Taichung Veterans General Hospital, Taichung 407, Taiwan;
| | - Hsin-Hua Lee
- Department of Radiation Oncology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Ph.D. Program in Environmental and Occupational Medicine, Kaohsiung Medical University and National Health Research Institutes, Kaohsiung 807, Taiwan
- Department of Radiation Oncology, Faculty of Medicine, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Lee K, Le T, Hau E, Hanna GG, Gee H, Vinod S, Dammak S, Palma D, Ong A, Yeghiaian-Alvandi R, Buck J, Lim R. A systematic review into the radiological features predicting local recurrence after stereotactic ablative body radiotherapy (SABR) in patients with non-small cell lung cancer (NSCLC): Local recurrence features of NSCLC post-SABR. Int J Radiat Oncol Biol Phys 2021; 113:40-59. [PMID: 34879247 DOI: 10.1016/j.ijrobp.2021.11.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND PURPOSE Post-treatment surveillance for local recurrence (LR) following SABR can include both fluorodeoxyglucose-positron emission tomography (FDG-PET) and computed tomography (CT). Radiation-induced lung injury (RILI) shares a similar appearance to LR after treatment making the detection of LR on imaging difficult for clinicians. We aimed to summarise radiological features of CT and FDG-PET predicting LR, and to evaluate radiomics as another tool for detecting LR. METHODS AND MATERIALS We searched MEDLINE, EMBASE and PubMed databases for published studies and Web of Science, Wiley Online and Science Direct databases for conference abstracts that had patient populations with NSCLC and reported post-SABR radiological features of FDG-PET or CT and radiomics from either FDG-PET or CT. Studies for inclusion were independently reviewed by two authors. RESULTS Across 32 relevant studies, the incidence of LR was 13% (222/1726). On CT, certain gross radiological appearances, and kinetic features of changes in size, diameter, volume or 3 consecutive rises in volume of mass-like consolidation are suggestive of LR. Particular regard should be made for the presence of any ≥3 high-risk features (HRF) on CT or the individual HRF of enlarging opacity at ≥12 month's post-SABR as being highly suspicious of LR. On FDG-PET a relative reduction of <5% of SUVmax from baseline in the first 12 months or cut-offs of SUVmax >5 and SUVmean >3.44 after 12 months can indicate LR. There is limited evidence available to corroborate radiomic features suggestive of LR. CONCLUSION This research has identified common features of LR compared to RILI which may aid in early and accurate detection of LR post-SABR; further research is required to validate these findings.
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Affiliation(s)
- Katherine Lee
- Westmead Hospital, Sydney, New South Wales, Australia; Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia.
| | - Tue Le
- Radiation Oncology - Mid North Coast Cancer Institute, Port Macquarie, New South Wales, Australia
| | - Eric Hau
- Sydney West Radiation Oncology Network, Sydney, New South Wales, Australia; Westmead Clinical School, The University of Sydney, Sydney, New South Wales, Australia; Westmead Institute of Medical Research, Sydney, New South Wales, Australia
| | - Gerard G Hanna
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Victoria, Australia
| | - Harriet Gee
- Sydney West Radiation Oncology Network, Sydney, New South Wales, Australia; Children's Medical Research Institute, Sydney, New South Wales, Australia; The University of Sydney, Sydney, New South Wales, Australia
| | - Shalini Vinod
- Cancer Therapy Centre, Liverpool Hospital, Liverpool, New South Wales, Australia; South Western Sydney Clinical School, University of New South Wales, Liverpool, New South Wales, Australia
| | - Salma Dammak
- The School of Biomedical Engineering, Western University, London, Ontario, Canada; Baines Imaging Research Laboratory, London Regional Cancer Program, London, Ontario, Canada
| | - David Palma
- Division of Radiation Oncology, Western University, London, Ontario, Canada
| | - Anselm Ong
- Department of Radiation Oncology, The Crown Princess Mary Cancer Centre, Westmead Hospital, Westmead Sydney, New South Wales, Australia
| | | | - Jacqueline Buck
- Department of Medical Oncology, Nepean Cancer Care Centre, Nepean Hospital, Kingswood, New South Wales, Australia
| | - Rebecca Lim
- Department of Radiology, Westmead Hospital, Sydney, New South Wales, Australia
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Nguyen ET, Bayanati H, Bilawich AM, Sanchez Tijmes F, Lim R, Harris S, Dennie C, Oikonomou A. Canadian Society of Thoracic Radiology/Canadian Association of Radiologists Clinical Practice Guidance for Non-Vascular Thoracic MRI. Can Assoc Radiol J 2021; 72:831-845. [PMID: 33781127 DOI: 10.1177/0846537121998961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Historically thoracic MRI has been limited by the lower proton density of lung parenchyma, cardiac and respiratory motion artifacts and long acquisition times. Recent technological advancements in MR hardware systems and improvement in MR pulse sequences have helped overcome these limitations and expand clinical opportunities for non-vascular thoracic MRI. Non-vascular thoracic MRI has been established as a problem-solving imaging modality for characterization of thymic, mediastinal, pleural chest wall and superior sulcus tumors and for detection of endometriosis. It is increasingly recognized as a powerful imaging tool for detection and characterization of lung nodules and for assessment of lung cancer staging. The lack of ionizing radiation makes thoracic MRI an invaluable imaging modality for young patients, pregnancy and for frequent serial follow-up imaging. Lack of familiarity and exposure to non-vascular thoracic MRI and lack of consistency in existing MRI protocols have called for clinical practice guidance. The purpose of this guide, which was developed by the Canadian Society of Thoracic Radiology and endorsed by the Canadian Association of Radiologists, is to familiarize radiologists, other interested clinicians and MR technologists with common and less common clinical indications for non-vascular thoracic MRI, discuss the fundamental imaging findings and focus on basic and more advanced MRI sequences tailored to specific clinical questions.
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Affiliation(s)
- Elsie T Nguyen
- Cardiothoracic Division, Joint Department of Medical Imaging, 33540Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Hamid Bayanati
- Thoracic Division, Department of Medical Imaging, The Ottawa Hospital, 12365University of Ottawa, Ottawa, Ontario, Canada
| | - Ana-Maria Bilawich
- Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Felipe Sanchez Tijmes
- Joint Department of Medical Imaging, Toronto General Hospital, 7938University of Toronto, Toronto, Ontario, Canada
| | - Robert Lim
- Thoracic Division, Department of Medical Imaging, The Ottawa Hospital, 12365University of Ottawa, Ottawa, Ontario, Canada
| | - Scott Harris
- 7512Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, Canada
| | - Carole Dennie
- Department of Medical Imaging, The Ottawa Hospital, 7938University of Ottawa, Ottawa, Ontario, Canada.,Cardiac Radiology and MRI, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.,27337The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Anastasia Oikonomou
- Department of Medical Imaging, Sunnybrook Health Sciences Centre, 7938University of Toronto, Toronto, Ontario, Canada
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Jagoda P, Fleckenstein J, Sonnhoff M, Schneider G, Ruebe C, Buecker A, Stroeder J. Diffusion-weighted MRI improves response assessment after definitive radiotherapy in patients with NSCLC. Cancer Imaging 2021; 21:15. [PMID: 33478592 PMCID: PMC7818746 DOI: 10.1186/s40644-021-00384-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 01/08/2021] [Indexed: 01/15/2023] Open
Abstract
Background Computed tomography (CT) is the standard procedure for follow-up of non-small-cell lung cancer (NSCLC) after radiochemotherapy. CT has difficulties differentiating between tumor, atelectasis and radiation induced lung toxicity (RILT). Diffusion-weighted imaging (DWI) may enable a more accurate detection of vital tumor tissue. The aim of this study was to determine the diagnostic value of MRI versus CT in the follow-up of NSCLC. Methods Twelve patients with NSCLC stages I-III scheduled for radiochemotherapy were enrolled in this prospective study. CT with i.v. contrast agent and non enhanced MRI were performed before and 3, 6 and 12 months after treatment. Standardized ROIs were used to determine the apparent diffusion weighted coefficient (ADC) within the tumor. Tumor size was assessed by the longest longitudinal diameter (LD) and tumor volume on DWI and CT. RILT was assessed on a 4-point-score in breath-triggered T2-TSE and CT. Results There was no significant difference regarding LD and tumor volume between MRI and CT (p ≥ 0.6221, respectively p ≥ 0.25). Evaluation of RILT showed a very high correlation between MRI and CT at 3 (r = 0.8750) and 12 months (r = 0.903). Assessment of the ADC values suggested that patients with a good tumor response have higher ADC values than non-responders. Conclusions DWI is equivalent to CT for tumor volume determination in patients with NSCLC during follow up. The extent of RILT can be reliably determined by MRI. DWI could become a beneficial method to assess tumor response more accurately. ADC values may be useful as a prognostic marker.
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Affiliation(s)
- Philippe Jagoda
- Clinic for Diagnostic and Interventional Radiology, Saarland University Medical Center, Kirrberger Str. 1, 66421, Homburg, Saar, Germany.
| | - Jochen Fleckenstein
- Department of Radiotherapy and Radiation Oncology, Saarland University Medical Center, Kirrberger Str. Geb. 6.5, 66421, Homburg, Saar, Germany
| | - Mathias Sonnhoff
- Department of Radiotherapy and Radiation Oncology, Saarland University Medical Center, Kirrberger Str. Geb. 6.5, 66421, Homburg, Saar, Germany
| | - Günther Schneider
- Clinic for Diagnostic and Interventional Radiology, Saarland University Medical Center, Kirrberger Str. 1, 66421, Homburg, Saar, Germany
| | - Christian Ruebe
- Department of Radiotherapy and Radiation Oncology, Saarland University Medical Center, Kirrberger Str. Geb. 6.5, 66421, Homburg, Saar, Germany
| | - Arno Buecker
- Clinic for Diagnostic and Interventional Radiology, Saarland University Medical Center, Kirrberger Str. 1, 66421, Homburg, Saar, Germany
| | - Jonas Stroeder
- Clinic for Diagnostic and Interventional Radiology, Saarland University Medical Center, Kirrberger Str. 1, 66421, Homburg, Saar, Germany
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Zhao M, Zhao L, Yang H, Duan Y, Li G. Apparent diffusion coefficient for the prediction of tumor response to neoadjuvant chemo-radiotherapy in locally advanced rectal cancer. Radiat Oncol 2021; 16:17. [PMID: 33472660 PMCID: PMC7819172 DOI: 10.1186/s13014-020-01738-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 12/26/2020] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Patients with locally advanced rectal cancer generally have different response rates to preoperative neoadjuvant chemo-radiotherapy. This study investigated the value of the apparent diffusion coefficient (ADC) as a predictor to forecast the response to neoadjuvant chemo-radiotherapy in patients with locally advanced rectal cancer. METHODS Ninety-one locally advanced rectal cancer patients who underwent neoadjuvant chemo-radiotherapy between 2015 and 2018 were enrolled. Diffusion-weighted magnetic resonance imaging was performed before treatment and within 4 weeks after the completion of neoadjuvant chemo-radiotherapy. Mean ADC values of regions of interest were evaluated by two radiologists. The tumor response was evaluated according to RESCIST 1.1. The cut-off value for the mean ADC and increasing percentage (ΔADC%) after neoadjuvant chemo-radiotherapy was calculated using the receiver operating characteristic curve. The response rate of pre-ADC and ΔADC% above/below the cut-off values was determined using the chi-square test, respectively. Primary tumor progression-free survival (PFS) was analyzed using the Kaplan-Meier method, based on the pre-ADC and ΔADC% cut-off values. RESULTS The cut-off value of mean pre-ADC and ΔADC% was 0.94 × 10-3 mm2/s (80.36% sensitivity, 74.29% specificity) and 26.0% (73.21% sensitivity, 77.14% specificity), respectively. Lower mean pre-ADC values were related to a better response rate (83.3% vs 29.7%, P < 0.001) and PFS (26.12 vs 17.70 months, P = 0.004). ΔADC% above the cut-off value was also related to a better response rate (83.7% vs 35.7%, P < 0.001) and PFS (26.93 vs 15.65 months, P = 0.034). CONCLUSIONS The mean ADC pre-treatment value and ΔADC% were potential predictors for the tumor response in locally advanced rectal cancer patients treated with neoadjuvant chemo-radiotherapy.
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Affiliation(s)
- Mengjing Zhao
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Lihao Zhao
- Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Han Yang
- Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Yuxia Duan
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China.
| | - Gang Li
- Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China.
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Zhao L, Zhao M, Liu J, Yang H, Zhou X, Wen C, Li G, Duan Y. Mean apparent diffusion coefficient in a single slice may predict tumor response to whole-brain radiation therapy in non-small-cell lung cancer patients with brain metastases. Eur Radiol 2021; 31:5565-5575. [PMID: 33452628 DOI: 10.1007/s00330-020-07584-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 11/09/2020] [Accepted: 12/01/2020] [Indexed: 12/25/2022]
Abstract
OBJECTIVES This study aimed to access the performance of apparent diffusion coefficient (ADC) as a predictor for treatment response to whole-brain radiotherapy (WBRT) in patients with brain metastases (BMs) from non-small-cell lung cancer (NSCLC). METHODS A retrospective analysis was conducted of 102 NSCLC patients with BMs who underwent WBRT between 2012 and 2016. Diffusion-weighted MRI were performed pre-WBRT and within 12 weeks after WBRT started. Mean single-plane ADC value of ROIs was evaluated by two radiologists blinded to results of each other. The treatment response rate, intracranial progression-free survival (PFS), and overall survival (OS) were analyzed based on the ADC value and ΔADC respectively. At last, we used COX and logistic regression to do the multivariate analysis. RESULTS There was good inter-observer agreement of mean ADC value pre-WBRT, post-WBRT, and ΔADC between the 2 radiologists (Pearson correlation 0.915 [pre-WBRT], 0.950 [post-WBRT], 0.937 [ΔADC], p < 0.001, for each one). High mean ADC value were related with better response rate (72.2% vs 37.5%, p = 0.001) and iPFS (7.6 vs 6.4 months, p = 0.031). High ΔADC were related with better response rate (73.6% vs 36.7%, p < 0.001). Multivariate analysis shows that histopathology, BMs number, high ADC value pre-WBRT, and high ΔADC post-WBRT were related to better treatment response of WBRT, and KPS, BMs number, and low ADC value pre-WBRT increased the risk of developing intracranial relapse. CONCLUSIONS The mean single-plane ADC value pre-WBRT and ΔADC post-WBRT were potential predictor for intracranial tumor response to WBRT in NSCLC patients with brain metastases. KEY POINTS • ADC value is a potential predictor of intracranial treatment response to WBRT in NSCLC patients with brain metastases. • Higher mean ADC value pre-WBRT and ΔADC post-WBRT of brain metastases were related to better intracranial tumor response. • Prediction of response before WBRT using ADC value can help oncologists to make better therapy plans and avoid missing opportunities for rescue therapy.
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Affiliation(s)
- Lihao Zhao
- Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, No. 2 Fuxue Lane, Wenzhou, 325000, People's Republic of China
| | - Mengjing Zhao
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, South Baixiang Street, Wenzhou, 325000, People's Republic of China
| | - Jinjin Liu
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, South Baixiang Street, Wenzhou, 325000, People's Republic of China
| | - Han Yang
- Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, No. 2 Fuxue Lane, Wenzhou, 325000, People's Republic of China
| | - Xiaojun Zhou
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, South Baixiang Street, Wenzhou, 325000, People's Republic of China
| | - Caiyun Wen
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, South Baixiang Street, Wenzhou, 325000, People's Republic of China
| | - Gang Li
- Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, No. 2 Fuxue Lane, Wenzhou, 325000, People's Republic of China.
| | - Yuxia Duan
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, South Baixiang Street, Wenzhou, 325000, People's Republic of China.
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Cancer Detection and Quantification of Treatment Response Using Diffusion-Weighted MRI. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00068-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Chassagnon G, Martini K, Giraud P, Revel MP. Radiological assessment after stereotactic body radiation of lung tumours. Cancer Radiother 2020; 24:379-387. [PMID: 32534799 DOI: 10.1016/j.canrad.2020.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 04/21/2020] [Indexed: 12/17/2022]
Abstract
The increasing use of stereotactic body radiation therapy for lung tumours comes along with new post-therapeutic imaging findings that should be known by physicians involved in patient follow-up. Radiation-induced lung injury is much more frequent than after conventional radiation therapy, it can also be delayed and has a different radiological presentation. Radiation-induced lung injury after stereotactic body radiation therapy involves the lung parenchyma surrounding the target tumour and appears as a dynamic process continuing for years after completion of the treatment. Thus, the radiological pattern and the severity of radiation-induced lung injury are prone to changes during follow-up, which can make it difficult to differentiate from local recurrence. Contrary to radiation-induced lung injury, local recurrence after stereotactic body radiation therapy is rare. Other complications mainly depend on tumour location and include airway complications, rib fractures and organizing pneumonia. The aim of this article is to provide a wide overview of radiological changes occurring after SBRT for lung tumours. Awareness of changes following stereotactic body radiation therapy should help avoiding unnecessary interventions for pseudo tumoral presentations.
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Affiliation(s)
- G Chassagnon
- Service de radiologie, hôpital Cochin, AP-HP, centre université de Paris, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France; Université de Paris, 12, rue de l'École-de-Médecine, 75006 Paris, France.
| | - K Martini
- Service de radiologie, hôpital Cochin, AP-HP, centre université de Paris, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France
| | - P Giraud
- Université de Paris, 12, rue de l'École-de-Médecine, 75006 Paris, France; Service de radiologie, hôpital européen Georges-Pompidou, AP-HP, centre université de Paris, 20, rue Leblanc, 75015 Paris, France
| | - M-P Revel
- Service de radiologie, hôpital Cochin, AP-HP, centre université de Paris, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France; Université de Paris, 12, rue de l'École-de-Médecine, 75006 Paris, France
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A Prospective Study of Magnetic Resonance Imaging Assessment of Post-radiation Changes Following Stereotactic Body Radiation Therapy for Non-small Cell Lung Cancer. Clin Oncol (R Coll Radiol) 2019; 31:720-727. [DOI: 10.1016/j.clon.2019.05.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 04/09/2019] [Accepted: 04/18/2019] [Indexed: 12/25/2022]
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Sampath S, Rahmanuddin S, Sahoo P, Frankel P, Boswell S, Wong J, Rotter A, Rockne R, Wong J, Park JM. Change in Apparent Diffusion Coefficient Is Associated With Local Failure After Stereotactic Body Radiation Therapy for Non-Small Cell Lung Cancer: A Prospective Clinical Trial. Int J Radiat Oncol Biol Phys 2019; 105:659-663. [PMID: 31271822 DOI: 10.1016/j.ijrobp.2019.06.2536] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 06/19/2019] [Accepted: 06/21/2019] [Indexed: 12/25/2022]
Abstract
PURPOSE Response assessment with computed tomography after stereotactic body radiation therapy (SBRT) for non-small cell lung cancer (NSCLC) is challenging because myriad anatomic changes can occur after treatment. Diffusion-weighted magnetic resonance imaging (MRI) may provide additional data to guide therapy response. The primary objective was to evaluate the effect of SBRT on the mean apparent diffusion coefficient (ADC). METHODS AND MATERIALS This is a prospective clinical study of patients with NSCLC who received SBRT to the primary lung lesion. Patients underwent MRI scans before and at 1 month after completion of SBRT. MRI consisted of T1- and T2-weighted sequences, along with postcontrast, dynamic-contrast, and diffusion-weighted sequences with construction of ADC maps. Two blinded radiologists generated the ADC. SBRT was given over 5 fractions. RESULTS A total of 13 patients were enrolled. Twelve patients were eligible for analysis. An average increase of 50% and 46% in mean single-plane ADC was observed after treatment by readers 1 and 2, respectively (P < .01, both reviewers). There was good interobserver agreement of single-plane ADC values between the 2 radiologists (Pearson correlation of 0.85 [baseline] and 0.89 [1-month post-SBRT], P < .001 for both). There was also a significant 18% increase in mean volumetric ADC on the 1-month scan (Wilcoxon P = .02). Two patients developed a local failure after SBRT, 1 at 6 months and the other at 34 months. Using a threshold of volumetric ADC increase of greater than 40%, 2 of 2 patients demonstrated local failure compared with 0 of 10 patients below this limit. CONCLUSIONS A statistically significant increase in ADC was observed 1 month after treatment. An ADC increase of 40% at 1 month was associated with a higher rate of local failure. This pilot study provides impetus for studying ADC as a radiomic biomarker in patients receiving lung SBRT for NSCLC.
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Affiliation(s)
- Sagus Sampath
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, California.
| | - Syed Rahmanuddin
- Department of Radiology, City of Hope National Medical Center, Duarte, California
| | - Prativa Sahoo
- Department of Mathematical Oncology, City of Hope National Medical Center, Duarte, California
| | - Paul Frankel
- Department of Biostatistics, City of Hope National Medical Center, Duarte, California
| | - Stephanie Boswell
- Department of Diagnostic Radiology, Scripps Clinic, San Diego, California
| | - Jimmie Wong
- Department of Radiology, City of Hope National Medical Center, Duarte, California
| | - Arnold Rotter
- Department of Radiology, City of Hope National Medical Center, Duarte, California
| | - Russell Rockne
- Department of Mathematical Oncology, City of Hope National Medical Center, Duarte, California
| | - Jeffrey Wong
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, California
| | - Jinha M Park
- Department of Radiology, University of Iowa, Iowa City, Iowa
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Ding M, Zollinger W, Ebeling R, Heard D, Posey R. Using max standardized uptake value from positron emission tomography to assess tumor responses after lung stereotactic body radiotherapy for different prescriptions. J Appl Clin Med Phys 2018; 19:226-233. [PMID: 30216639 PMCID: PMC6236840 DOI: 10.1002/acm2.12453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 06/06/2018] [Accepted: 08/20/2018] [Indexed: 12/31/2022] Open
Abstract
PURPOSE To retrospectively investigate tumor responses of lung SBRT patients for different prescriptions. To analyze the relation between optimal biologically equivalent dose (BED) and tumor responses. METHODS AND MATERIALS Tumor responses after lung SBRT were compared by examining 48 treatments used four prescriptions. This study used simplified tumor response criteria: (a) Complete Response (CR) - post max SUV (SUVpost ) after SBRT in the treated tumor region was almost the same as the SUVs in the surrounding regions; (b) Partial Response (PR) - SUVpost was smaller than previous max SUV (SUVpre ), but was greater than the SUVs in the surrounding regions; (c) No Response (NR) - SUVpost was the same as or greater than SUVpre . Some SUVpost reported as mild or favorable responses were classified as CR/PR. BED calculated using α/β of 10 Gy were analyzed with assessments of tumor responses for SBRT prescriptions. RESULTS For the prescriptions (9 Gy × 5, 10 Gy × 5, 11 Gy × 5, and 12 Gy × 4) historically recommended by RTOG, we observed that higher BED10 and lower tumor volume would achieve a higher complete response rate. The highest complete response rate was observed for smallest tumor volume (PTVave = 6.8 cc) with higher BED10 (105.6) of 12 Gy × 4 prescription. For 11 Gy × 5 prescription, the BED10 (115.5) was the highest, but its complete response rate (58%) was lower than 79% of 12 Gy × 4 prescription. We observed the PTVave of 11 Gy × 5 prescription was more than double of the PTVave of 12 Gy × 4 prescription. For the same lung SBRT prescription (BED10 > 100) earlier staging tumor had more favorable local control. CONCLUSION We demonstrated post max SUV read from PET/CT could efficiently and accurately assess tumor response after lung SBRT. Although SBRT with prescriptions resulting in a BED10 > 100 experienced favorable tumor responses for early staging cancer, escalation of BED10 to higher levels would be beneficial for lung cancer patients with later staging and larger volume tumors.
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Affiliation(s)
- Meisong Ding
- Department of Radiation OncologyTulane University Medical CenterNew OrleansLAUSA
| | | | | | - David Heard
- Northeast Louisiana Cancer CenterMonroeLAUSA
| | - Ryan Posey
- Northeast Louisiana Cancer CenterMonroeLAUSA
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Tang L, Zhou XJ. Diffusion MRI of cancer: From low to high b-values. J Magn Reson Imaging 2018; 49:23-40. [PMID: 30311988 DOI: 10.1002/jmri.26293] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 07/20/2018] [Accepted: 07/23/2018] [Indexed: 12/14/2022] Open
Abstract
Following its success in early detection of cerebral ischemia, diffusion-weighted imaging (DWI) has been increasingly used in cancer diagnosis and treatment evaluation. These applications are propelled by the rapid development of novel diffusion models to extract biologically valuable information from diffusion-weighted MR signals, and significant advances in MR hardware that has enabled image acquisition with high b-values. This article reviews recent technical developments and clinical applications in cancer imaging using DWI, with a special emphasis on high b-value diffusion models. The article is organized in four sections. First, we provide an overview of diffusion models that are relevant to cancer imaging. The model parameters are discussed in relation to three tissue properties-cellularity, vascularity, and microstructures. An emphasis is placed on characterization of microstructural heterogeneity, given its novelty and close relevance to cancer. Second, we illustrate diffusion MR clinical applications in each of the following three categories: 1) cancer detection and diagnosis; 2) cancer grading, staging, and classification; and 3) cancer treatment response prediction and evaluation. Third, we discuss several practical issues, including selection of image acquisition parameters, reproducibility and reliability, motion management, image distortion, etc., that are commonly encountered when applying DWI to cancer in clinical settings. Lastly, we highlight a few ongoing challenges and provide some possible future directions, particularly in the area of establishing standards via well-organized multicenter clinical trials to accelerate clinical translation of advanced DWI techniques to improving cancer care on a large scale. Level of Evidence: 5 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;49:23-40.
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Affiliation(s)
- Lei Tang
- Department of Radiology, Peking University Cancer Hospital & Institute, Key laboratory of Carcinogenesis and Translational Research, Beijing, China
| | - Xiaohong Joe Zhou
- Center for MR Research and Departments of Radiology, Neurosurgery, and Bioengineering, University of Illinois at Chicago, Chicago, Illinois, USA
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Febbo JA, Gaddikeri RS, Shah PN. Stereotactic Body Radiation Therapy for Early-Stage Non–Small Cell Lung Cancer: A Primer for Radiologists. Radiographics 2018; 38:1312-1336. [DOI: 10.1148/rg.2018170155] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jennifer A. Febbo
- From the Department of Diagnostic Radiology and Nuclear Medicine, Rush University Medical Center, 1653 W Congress Pkwy, Jelke 181, Chicago, IL 60612
| | - Ramya S. Gaddikeri
- From the Department of Diagnostic Radiology and Nuclear Medicine, Rush University Medical Center, 1653 W Congress Pkwy, Jelke 181, Chicago, IL 60612
| | - Palmi N. Shah
- From the Department of Diagnostic Radiology and Nuclear Medicine, Rush University Medical Center, 1653 W Congress Pkwy, Jelke 181, Chicago, IL 60612
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