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Santoso AP, Vinogradskiy Y, Robin TP, Goodman KA, Schefter TE, Miften M, Jones BL. Clinical and Dosimetric Impact of 2D kV Motion Monitoring and Intervention in Liver Stereotactic Body Radiation Therapy. Adv Radiat Oncol 2024; 9:101409. [PMID: 38298328 PMCID: PMC10828584 DOI: 10.1016/j.adro.2023.101409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 11/13/2023] [Indexed: 02/02/2024] Open
Abstract
Purpose Positional errors resulting from motion are a principal challenge across all disease sites in radiation therapy. This is particularly pertinent when treating lesions in the liver with stereotactic body radiation therapy (SBRT). To achieve dose escalation and margin reduction for liver SBRT, kV real-time imaging interventions may serve as a potential solution. In this study, we report results of a retrospective cohort of liver patients treated using real-time 2D kV-image guidance SBRT with emphasis on the impact of (1) clinical workflow, (2) treatment accuracy, and (3) tumor dose. Methods and Materials Data from 33 patients treated with 41 courses of liver SBRT were analyzed. During treatment, planar kV images orthogonal to the treatment beam were acquired to determine treatment interventions, namely treatment pauses (ie, adequacy of gating thresholds) or treatment shifts. Patients were shifted if internal markers were >3 mm, corresponding to the PTV margin used, from the expected reference condition. The frequency, duration, and nature of treatment interventions (ie, pause vs shift) were recorded, and the dosimetric impact associated with treatment shifts was estimated using a machine learning dosimetric model. Results Of all fractions delivered, 39% required intervention, which took on average 1.9 ± 1.6 minutes and occurred more frequently in treatments lasting longer than 7 minutes. The median realignment shift was 5.7 mm in size, and the effect of these shifts on minimum tumor dose in simulated clinical scenarios ranged from 0% to 50% of prescription dose per fraction. Conclusion Real-time kV-based imaging interventions for liver SBRT minimally affect clinical workflow and dosimetrically benefit patients. This potential solution for addressing positional errors from motion addresses concerns about target accuracy and may enable safe dose escalation and margin reduction in the context of liver SBRT.
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Affiliation(s)
- Andrew P. Santoso
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado
| | - Yevgeniy Vinogradskiy
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Tyler P. Robin
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado
| | - Karyn A. Goodman
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Tracey E. Schefter
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado
| | - Moyed Miften
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado
| | - Bernard L. Jones
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado
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Sim AJ, Hoffe SE, Latifi K, Palm RF, Feygelman V, Leuthold S, Dookhoo M, Dennett M, Rosenberg SA, Frakes JM. A Practical Workflow for Magnetic Resonance-Guided Stereotactic Body Radiation Therapy to the Pancreas. Pract Radiat Oncol 2023; 13:e45-e53. [PMID: 35901947 DOI: 10.1016/j.prro.2022.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/11/2022] [Accepted: 07/13/2022] [Indexed: 01/10/2023]
Abstract
The increased adoption of stereotactic body radiation therapy has allowed for delivery of higher doses, potentially associated with better outcomes but at the risk of higher toxicity. The intimate association of radiosensitive organs at risk (eg, stomach, duodenum, bowel) has historically limited the delivery of ablative doses to the pancreas. The advent of magnetic resonance-guided radiation therapy with improved soft-tissue contrast allows for gated delivery without an internal target volume and online adaptive replanning to maximize the therapeutic ratio. Patient selection requires additional resources, including increased patient on-table time, physician time, and physics support. Within our center's workflow, integrating an educational video at consultation as well as optimizing biofeedback mechanisms have significantly improved the experience for our patients.
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Affiliation(s)
- Austin J Sim
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida; Department of Radiation Oncology, James Cancer Hospital and Solove Research Institute, Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Sarah E Hoffe
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Kujtim Latifi
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Russell F Palm
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Vladimir Feygelman
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Susan Leuthold
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Marsha Dookhoo
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Maria Dennett
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Stephen A Rosenberg
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Jessica M Frakes
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
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Sun X, Dai Z, Xu M, Guo X, Su H, Li Y. Quantifying 6D tumor motion and calculating PTV margins during liver stereotactic radiotherapy with fiducial tracking. Front Oncol 2022; 12:1021119. [DOI: 10.3389/fonc.2022.1021119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 10/18/2022] [Indexed: 11/18/2022] Open
Abstract
ObjectiveOur study aims to estimate intra-fraction six-dimensional (6D) tumor motion with rotational correction and the related correlations between motions of different degrees of freedom (DoF), as well as quantify sufficient anisotropic clinical target volume (CTV) to planning target volume (PTV) margins during stereotactic body radiotherapy (SBRT) of liver cancer with fiducial tracking technique.MethodsA cohort of 12 patients who were implanted with 3 or 4 golden markers were included in this study, and 495 orthogonal kilovoltage (kV) pairs of images acquired during the first fraction were used to extract the spacial position of each golden marker. Translational and rotational motions of tumor were calculated based on the marker coordinates by using an iterative closest point (ICP) algorithm. Moreover, the Pearson product-moment correlation coefficients (r) were applied to quantify the correlations between motions with different degrees of freedom (DoFs). The population mean displacement (MP¯), systematic error (Σ) and random error (σ) were obtained to calculate PTV margins based on published recipes.ResultsThe mean translational variability of tumors were 0.56, 1.24 and 3.38 mm in the left-right (LR, X), anterior-posterior (AP, Y), and superior-inferior (SI, Z) directions, respectively. The average rotational angles θX , θY and θZ around the three coordinate axes were 0.88, 1.24 and 1.12, respectively. (|r|>0.4) was obtainted between Y -Z , Y - θZ , Z -θZ and θX - θY . The PTV margins calculated based on 13 published recipes in X, Y, and Z directions were 1.08, 2.26 and 5.42 mm, and the 95% confidence interval (CI) of them were (0.88,1.28), (1.99,2.53) and (4.78,6.05), respectively.ConclusionsThe maximum translational motion was in SI direction, and the largest correlation coefficient of Y-Z was obtained. We recommend margins of 2, 3 and 7 mm in LR, AP and SI directions, respectively.
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Fu HJ, Chen PY, Yang HY, Tsang YW, Lee CY. Liver-directed stereotactic body radiotherapy can be reliably delivered to selected patients without internal fiducial markers-A case series. J Chin Med Assoc 2022; 85:1028-1032. [PMID: 36000954 DOI: 10.1097/jcma.0000000000000798] [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] [Indexed: 11/26/2022] Open
Abstract
Tumor motion and the lack of tissue-tumor contrast have been challenging parts of liver-directed stereotactic body radiotherapy (SBRT). In this study, we investigated the possibility of liver-directed SBRT without internal fiducials using breath hold technique and diaphragm matching technique. One hundred thirty-four volumetric images of 13 consecutive patients with either primary or metastatic liver tumors who underwent expiratory breath hold SBRT were compared and analyzed. Reproducibility of diaphragm position between fractions relative to bone was evaluated on image registration software. At median follow-up time of 13 months, 1-year and 2-year local control rates of index lesions were 90% and 72%, respectively. In comparison to diaphragm matching, a greater margin is required for bone matching technique for that 19 of 67 (28%) of all interfractional SI offsets were more than 6 mm, whereas 6 of 67 (9%) intrafractional SI exceeded 6 mm. Despite the small study size, our study showed that breath hold SBRT without internal hepatic fiducial is a valid approach for selected patients.
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Affiliation(s)
- Hsiao-Ju Fu
- Department of Radiation Therapy and Oncology, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan, ROC
| | - Po-Yueh Chen
- Department of Internal Medicine, Ditmanson Medication Foundation, Chia-Yi Christian Hospital, Chiayi, Taiwan, ROC
| | - Hsin-Yi Yang
- Clinical Research Center, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan, ROC
| | - Yuk-Wah Tsang
- Department of Radiation Therapy and Oncology, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan, ROC
| | - Cheng-Yen Lee
- Department of Radiation Therapy and Oncology, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan, ROC
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Jing S, Jiang C, Ji X, Qiu X, Li J, Sun X, Zhu X. Study on Motion Management of Pancreatic Cancer Treated by CyberKnife. Front Oncol 2021; 11:767832. [PMID: 34926273 PMCID: PMC8674533 DOI: 10.3389/fonc.2021.767832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 11/08/2021] [Indexed: 11/21/2022] Open
Abstract
Purpose We investigated the movement characteristics of pancreas and the clinical accuracy of tracking pancreas with the Synchrony Respiratory Tracking System (SRTS) during the CyberKnife treatment. These data provide a clinical data basis for the expansion margins of pancreatic tumor target. Methods and Materials Forty-two patients with pancreatic cancer treated by CyberKnife were retrospectively studied. The pancreatic displacement calculated from the x-ray images collected during the time interval between two consecutive movements constituted a data set. Results The total mean motion amplitudes and standard deviations of pancreatic tumors in SI, LR, AP, and radial directions were 3.66 ± 1.71 mm, 0.97 ± 0.62 mm, 1.52 ± 1.02 mm, and 1.36 ± 0.49 mm, respectively. The overall mean correlation errors and standard deviations were 0.82 ± 0.46 mm, 0.47 ± 0.33 mm, 0.41 ± 0.24 mm, and 0.98 ± 0.37 mm, respectively. The overall mean prediction errors and standard deviations were 0.57 ± 0.14 mm, 0.62 ± 0.28 mm, 0.39 ± 0.17 mm, and 1.58 ± 0.36 mm, respectively. The correlation errors and prediction errors of pancreatic tumors at different anatomical positions in SI, LR, and AP directions were statistically significant (p < 0.05). Conclusions The tumor motion amplitude, the tumor location, and the treatment time are the main factors affecting the tracking accuracy. The pancreatic tumors at different anatomical locations should be treated differently to ensure sufficient dose coverage of the pancreatic target area.
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Affiliation(s)
- Shenghua Jing
- Department of Radiation Oncology, East Region Military Command General Hospital, Nanjing, China
| | - Changchen Jiang
- Department of Radiation Oncology, East Region Military Command General Hospital, Nanjing, China
| | - Xiaoqin Ji
- Department of Radiation Oncology, East Region Military Command General Hospital, Nanjing, China
| | - Xiangnan Qiu
- Department of Radiation Oncology, East Region Military Command General Hospital, Nanjing, China
| | - Jing Li
- Department of Radiation Oncology, East Region Military Command General Hospital, Nanjing, China
| | - Xiangdong Sun
- Department of Radiation Oncology, East Region Military Command General Hospital, Nanjing, China
| | - Xixu Zhu
- Department of Radiation Oncology, East Region Military Command General Hospital, Nanjing, China
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Sharma M, Nano TF, Akkati M, Milano MT, Morin O, Feng M. A systematic review and meta-analysis of liver tumor position variability during SBRT using various motion management and IGRT strategies. Radiother Oncol 2021; 166:195-202. [PMID: 34843841 DOI: 10.1016/j.radonc.2021.11.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/17/2021] [Accepted: 11/21/2021] [Indexed: 12/25/2022]
Abstract
PURPOSE To suggest PTV margins for liver SBRT with different motion management strategies based on a systematic review and meta-analysis. METHODS In accordance with Preferred-Reporting-Items-for-Systematic-Reviews-and-Meta-Analyses (PRISMA), a systematic review in PubMed, Embase and Medline databases was performed for liver tumor position variability. From an initial 533 studies published before October 2020, 36 studies were categorized as 18 free-breathing (FB; npatients = 401), 9 abdominal compression (AC; npatients = 145) and 9 breath-hold (BH; npatients = 126). A meta-analysis was performed on inter- and intra-fraction position variability to report weighted-mean with 95% confidence interval (CI95) in superior-inferior (SI), left-right (LR) and anterior-posterior (AP) directions. Furthermore, weighted-mean ITV margins were computed for FB (nstudies = 15, npatients = 373) and AC (nstudies = 6, npatients = 97) and PTV margins were computed for FB (nstudies = 6, npatients = 95), AC (nstudies = 7, npatients = 106) and BH (nstudies = 8, npatients = 133). RESULTS The FB weighted-mean intra-fraction variability, ITV margins and weighted-standard-deviation in mm were SI-9.7, CI95 = 9.3-10.1, 13.5 ± 4.9; LR-5.4, CI95 = 5.3-5.6, 7.3 ± 7.9; and AP-4.2, CI95 = 4.0-4.4, 6.3 ± 7.6. The inter-fraction-based results were SI-4.7, CI95 = 4.3-5.1, 5.7 ± 1.7; LR-1.4, CI95 = 1.1-1.6, 3.6 ± 2.7; and AP-2.8, CI95 = 2.5-3.1, 4.8 ± 2.1. For AC intra-fraction results in mm were SI-1.8, CI95 = 1.6-2.0, 2.6 ± 1.2; LR-0.7, CI95 = 0.6-0.8, 1.7 ± 1.5; and AP-0.9, CI95 = 0.8-1.0, 1.9 ± 1.7. The inter-fraction results were SI-2.6, CI95 = 2.3-3.0, 5.2 ± 2.9; LR-1.9, CI95 = 1.7-2.1, 4.0 ± 2.2; and AP-2.9, CI95 = 2.5-3.2, 5.8 ± 2.7. For BH the inter-fraction variability, and the weighted-mean PTV margins and weighted-standard-deviation in mm were SI-2.4, CI95 = 2.1-2.7, 5.6 ± 2.9; LR-1.8, CI95 = 1.3-2.2, 5.5 ± 1.7; and AP-1.4; CI95 = 1.2-1.7, 6.1 ± 2.1. CONCLUSION Our meta-analysis suggests a symmetric weighted-mean PTV margin of 6 mm might be appropriate for BH. For AC and FB, asymmetric PTV margins (weighted-mean margin of 4 mm (AP), 6 mm (SI/LR)) might be appropriate. For FB, if larger (>ITV margin) intra-fraction variability observed, the additional intra- and inter-fraction variability should be accounted in the PTV margin.
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Affiliation(s)
- Manju Sharma
- University of California, San Francisco, United States.
| | - Tomi F Nano
- University of California, San Francisco, United States
| | | | | | - Olivier Morin
- University of California, San Francisco, United States
| | - Mary Feng
- University of California, San Francisco, United States
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Hill CS, Han-Oh S, Cheng Z, Wang KKH, Meyer JJ, Herman JM, Narang AK. Fiducial-based image-guided SBRT for pancreatic adenocarcinoma: Does inter-and intra-fraction treatment variation warrant adaptive therapy? Radiat Oncol 2021; 16:53. [PMID: 33741015 PMCID: PMC7980583 DOI: 10.1186/s13014-021-01782-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 03/10/2021] [Indexed: 12/25/2022] Open
Abstract
Purpose Variation in target positioning represents a challenge to set-up reproducibility and reliability of dose delivery with stereotactic body radiation therapy (SBRT) for pancreatic adenocarcinoma (PDAC). While on-board imaging for fiducial matching allows for daily shifts to optimize target positioning, the magnitude of the shift as a result of inter- and intra-fraction variation may directly impact target coverage and dose to organs-at-risk. Herein, we characterize the variation patterns for PDAC patients treated at a high-volume institution with SBRT. Methods We reviewed 30 consecutive patients who received SBRT using active breathing coordination (ABC). Patients were aligned to bone and then subsequently shifted to fiducials. Inter-fraction and intra-fraction scans were reviewed to quantify the mean and maximum shift along each axis, and the shift magnitude. A linear regression model was conducted to investigate the relationship between the inter- and intra-fraction shifts. Results The mean inter-fraction shift in the LR, AP, and SI axes was 3.1 ± 1.8 mm, 2.9 ± 1.7 mm, and 3.5 ± 2.2 mm, respectively, and the mean vector shift was 6.4 ± 2.3 mm. The mean intra-fraction shift in the LR, AP, and SI directions were 2.0 ± 0.9 mm, 2.0 ± 1.3 mm, and 2.3 ± 1.4 mm, respectively, and the mean vector shift was 4.3 ± 1.8 mm. A linear regression model showed a significant relationship between the inter- and intra-fraction shift in the AP and SI axis and the shift magnitude. Conclusions Clinically significant inter- and intra-fraction variation occurs during treatment of PDAC with SBRT even with a comprehensive motion management strategy that utilizes ABC. Future studies to investigate how these variations could lead to variation in the dose to the target and OAR should be investigated. Strategies to mitigate the dosimetric impact, including real time imaging and adaptive therapy, in select cases should be considered. Supplementary Information The online version contains supplementary material available at 10.1186/s13014-021-01782-w.
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Affiliation(s)
- Colin S Hill
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, 401 N. Broadway, Suite 1440, Baltimore, MD, 21231, USA.
| | - Sarah Han-Oh
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, 401 N. Broadway, Suite 1440, Baltimore, MD, 21231, USA
| | - Zhi Cheng
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, 401 N. Broadway, Suite 1440, Baltimore, MD, 21231, USA
| | - Ken Kang-Hsin Wang
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, 401 N. Broadway, Suite 1440, Baltimore, MD, 21231, USA
| | - Jeffrey J Meyer
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, 401 N. Broadway, Suite 1440, Baltimore, MD, 21231, USA
| | - Joseph M Herman
- Radiation Medicine, Zucker School of Medicine At Hofstra/Northwell, Lake Success, USA
| | - Amol K Narang
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, 401 N. Broadway, Suite 1440, Baltimore, MD, 21231, USA
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Oliver PAK, Yewondwossen M, Summers C, Shaw C, Cwajna S, Syme A. Influence of intra- and interfraction motion on planning target volume margin in liver stereotactic body radiation therapy using breath hold. Adv Radiat Oncol 2021; 6:100610. [PMID: 33490733 PMCID: PMC7809510 DOI: 10.1016/j.adro.2020.10.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/13/2020] [Accepted: 10/29/2020] [Indexed: 12/25/2022] Open
Abstract
Purpose This study aimed to investigate intra- and interfraction motion during liver stereotactic body radiation therapy for the purpose of planning target volume (PTV) margin estimation, comparing deep inspiration breath hold (DIBH) and deep expiration breath hold (DEBH). Methods and materials Pre- and posttreatment kV cone beam computed tomography (CT) images were acquired for patients with liver cancer who were treated using stereotactic body radiation therapy with DIBH or DEBH. A total of 188 images were analyzed from 18 patients. Positioning errors were determined based on a comparison with planning CT images and matching to the liver. Treatment did not proceed until errors were ≤3 mm. Standard deviations of random and systematic errors resulting from this image matching process were used to calculate PTV margin estimates. Results DIBH errors are generally larger than DEBH errors, especially in the anterior-posterior and superior-inferior directions. Posttreatment errors tend to be larger than pretreatment errors, especially for DIBH. Standard deviations of random errors are larger than those of systematic errors. Considering both pre- and posttreatment cone beam CT images, PTV margins for DIBH and DEBH are estimated as anterior-posterior, superior-inferior, right-left = (5.7, 6.3, 3.0) mm and (3.1, 3.4, 2.8) mm, respectively. Conclusions This study suggests that DEBH results in more reproducible target positioning, which could in turn justify the use of smaller PTV margins.
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Affiliation(s)
- Patricia A K Oliver
- Department of Medical Physics, Nova Scotia Health Authority, Halifax, Canada
| | - Mammo Yewondwossen
- Department of Medical Physics, Nova Scotia Health Authority, Halifax, Canada.,Department of Radiation Oncology, Dalhousie University, Halifax, Canada.,Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Canada
| | - Clare Summers
- Department of Radiation Oncology, Dalhousie University, Halifax, Canada
| | - Conor Shaw
- Department of Medical Physics, Nova Scotia Health Authority, Halifax, Canada
| | - Slawa Cwajna
- Department of Radiation Oncology, Dalhousie University, Halifax, Canada
| | - Alasdair Syme
- Department of Medical Physics, Nova Scotia Health Authority, Halifax, Canada.,Department of Radiation Oncology, Dalhousie University, Halifax, Canada.,Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Canada
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Farrugia B, Khor R, Foroudi F, Chao M, Knight K, Wright C. Protocol of a study investigating breath-hold techniques for upper-abdominal radiation therapy (BURDIE): addressing the challenge of a moving target. Radiat Oncol 2020; 15:250. [PMID: 33126899 PMCID: PMC7602358 DOI: 10.1186/s13014-020-01688-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 10/20/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Radiation therapy to upper abdominal sites is technically challenging due to motion of tumors and surrounding organs resulting from normal respiration. Breath-hold, using an Active Breathing Coordinator is one strategy used to reduce motion in these tumor sites. Though widely used, no studies have prospectively compared the different breath-hold techniques (inspiration, deep-inspiration and expiration) using ABC in the same patient cohort. METHODS Patients planned for radiation therapy to upper abdominal tumors are invited to participate in this prospective study. Participants attempt three breath hold techniques: inspiration, deep-inspiration and expiration breath-hold, in random order. kV fluoroscopy images of the dome of diaphragm are taken of five consecutive breath-holds in each technique. Reproducibility and stability of tumour position are measured, and used to select the technique with which to proceed to planning and treatment. Reproducibility at planning and each treatment fraction is measured, along with breath hold time, treatment efficiency and patient experience. DISCUSSION The screening method was validated after the first three participants. This screening process may be able to select the best breath-hold technique for an individual, which may lead to improved reproducibility. The screening process is being piloted as a prospective clinical trial. TRIAL REGISTRATION Australian New Zealand Clinical Trials Registry (ANZCTR): 12618001691235. Registered 12th October 2018. https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=376109&isReview=true .
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Affiliation(s)
- Briana Farrugia
- Radiation Oncology, Olivia Newton-John Cancer Wellness and Research Centre, Austin Health, PO Box 5555, Heidelberg, VIC, 3084, Australia. .,Department of Medical Imaging and Radiation Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Wellington Rd, Clayton, VIC, 3800, Australia.
| | - Richard Khor
- Radiation Oncology, Olivia Newton-John Cancer Wellness and Research Centre, Austin Health, PO Box 5555, Heidelberg, VIC, 3084, Australia
| | - Farshad Foroudi
- Radiation Oncology, Olivia Newton-John Cancer Wellness and Research Centre, Austin Health, PO Box 5555, Heidelberg, VIC, 3084, Australia
| | - Michael Chao
- Radiation Oncology, Olivia Newton-John Cancer Wellness and Research Centre, Austin Health, PO Box 5555, Heidelberg, VIC, 3084, Australia
| | - Kellie Knight
- Department of Medical Imaging and Radiation Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Wellington Rd, Clayton, VIC, 3800, Australia
| | - Caroline Wright
- Department of Medical Imaging and Radiation Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Wellington Rd, Clayton, VIC, 3800, Australia
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Image-guided Radiotherapy to Manage Respiratory Motion: Lung and Liver. Clin Oncol (R Coll Radiol) 2020; 32:792-804. [PMID: 33036840 DOI: 10.1016/j.clon.2020.09.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 08/26/2020] [Accepted: 09/18/2020] [Indexed: 12/25/2022]
Abstract
Organ motion as a result of respiratory and cardiac motion poses significant challenges for the accurate delivery of radiotherapy to both the thorax and the upper abdomen. Modern imaging techniques during radiotherapy simulation and delivery now permit better quantification of organ motion, which in turn reduces tumour and organ at risk position uncertainty. These imaging advances, coupled with respiratory correlated radiotherapy delivery techniques, have led to the development of a range of approaches to manage respiratory motion. This review summarises the key strategies of image-guided respiratory motion management with a focus on lung and liver radiotherapy.
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Green M, Van Nest SJ, Soisson E, Huber K, Liao Y, McBride W, Dominello MM, Burmeister J, Joiner MC. Three discipline collaborative radiation therapy (3DCRT) special debate: We should treat all cancer patients with hypofractionation. J Appl Clin Med Phys 2020; 21:7-14. [PMID: 32602186 PMCID: PMC7324689 DOI: 10.1002/acm2.12954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Michael Green
- Department of Radiation OncologyUniversity of MichiganAnn ArborMIUSA
| | | | - Emilie Soisson
- Department of RadiologyUniversity of VermontBurlingtonVTUSA
| | - Kathryn Huber
- Department of Radiation OncologyTufts Medical CenterBostonMAUSA
| | - Yixiang Liao
- Department of Radiation OncologyRush University Medical CenterChicagoILUSA
| | - William McBride
- Department of Radiation OncologyUniversity of California at Los Angeles (UCLA)Los AngelesCAUSA
| | | | - Jay Burmeister
- Department of OncologyWayne State University School of MedicineDetroitMIUSA
- Gershenson Radiation Oncology CenterBarbara Ann Karmanos Cancer InstituteDetroitMIUSA
| | - Michael C. Joiner
- Department of OncologyWayne State University School of MedicineDetroitMIUSA
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Shen ZT, Zhou H, Li AM, Ji XQ, Jiang CC, Yuan X, Li B, Zhu XX, Huang GC. Clinical outcomes and prognostic factors of stereotactic body radiation therapy combined with gemcitabine plus capecitabine for locally advanced unresectable pancreatic cancer. J Cancer Res Clin Oncol 2019; 146:417-428. [PMID: 31667573 DOI: 10.1007/s00432-019-03066-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 10/23/2019] [Indexed: 12/25/2022]
Abstract
PURPOSE This study aimed to evaluate the clinical outcomes, toxicity, and prognostic factors of SBRT combined with gemcitabine plus capecitabine (GEM-CAP) in treating locally advanced pancreatic cancer (LAPC). METHODS A total of 56 patients with LAPC treated with SBRT combined with GEM-CAP were reviewed from October 2010 to October 2016. The median total prescription dose at five fractions was 40 Gy (30-50 Gy). The patients were subjected to two cycles of GEM-CAP before SBRT. GEM-CAP chemotherapy was then offered for four cycles or until disease tolerance or progression. The primary endpoints included overall survival (OS) and progression-free survival (PFS). RESULTS The median OS and PFS from the date of diagnosis was 19 (95% CI 14.6-23.4) and 12 months (95% CI 8.34-15.66), respectively. The 1-year and 2-year survival rates were 82.1% and 35.7%, whereas the 1-year and 2-year PFS rates were 48.2% and 14.3%, respectively. The median carbohydrate antigen 19-9-determined PFS time was 11 months (95% CI 5.77-16.24). Multivariate analysis demonstrated that tumor diameter, lymph node metastasis, pre-treatment CA19-9 level, and post-treatment CA19-9 decline were independent prognostic factors (p < 0.05). Acute toxicity was minimal, with two cases (3.6%) experiencing grade 3 duodenal obstruction. No adverse events greater than grade 3 occurred. In late toxicity, three patients (5.4%) developed grade 3 gastrointestinal toxicity and two (3.6%) suffered from perforation caused by grade 4 radiation enteritis and intestinal fistula. CONCLUSIONS The combination of Cyberknife SBRT and GEM-CAP achieved excellent efficacy with acceptable toxicity for LAPC.
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Affiliation(s)
- Ze-Tian Shen
- Department of Radiation Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Han Zhou
- Department of Radiation Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Ao-Mei Li
- Department of Radiation Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Xiao-Qin Ji
- Department of Radiation Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Chang-Chen Jiang
- Department of Radiation Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Xi Yuan
- Department of Radiation Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Bing Li
- Department of Radiation Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China
| | - Xi-Xu Zhu
- Department of Radiation Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.
| | - Gui-Chun Huang
- Department of Medical Oncology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, Jiangsu, China.
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13
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Teboh RF, Srinivasan S, Ng SP, Aliru ML, Herman JM. Setup Management for Stereotactic Body Radiation Therapy of Patients With Pancreatic Cancer Treated via the Breath-Hold Technique. Pract Radiat Oncol 2019; 10:e280-e289. [PMID: 31669403 DOI: 10.1016/j.prro.2019.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 10/01/2019] [Accepted: 10/07/2019] [Indexed: 12/31/2022]
Abstract
PURPOSE Active Breathing Coordinator (Elekta AB, Crawley, UK) is a motion management strategy for radiation treatment. During setup, aligning the patient to the bony spine alone does not necessarily lead to an accurate alignment to soft tissue targets, and further adjustment is necessary. Determining a safe range of values for such adjustments is an important quality assurance measure and was the purpose of this study, with focus on stereotactic body radiation therapy in patients with pancreatic cancer. METHODS AND MATERIALS The retrospective study included 19 previously treated patients. For each fraction, a free-breathing cone beam computed tomography scan was registered to a reference breath-hold computed tomography for alignment to the spine. Two perpendicular breath-hold kV projection images were then acquired and compared with corresponding reference digitally reconstructed radiographs for additional alignment with a surrogate fiducial marker. By comparing the breath-hold kV projection images from subsequent treatment fractions with those from the first fraction, we derived the 3-dimensional variability of the fiducial position with respect to the reference image. RESULTS We observed intrafraction setup error to be within 2.0 mm. For interfraction, we observed average reproducibility of 1.7 ± 0.8 mm, 2.0 ± 1.4 mm, and 3.2 ± 2.5 mm in the left-right (LR), anterior-posterior (AP), and superior-inferior (SI) directions, respectively. The average excursion values from free breathing spine to breath-hold fiducial alignment were 1.5 ± 1.4 mm, 2.0 ± 1.9 mm, and 3.0 ± 2.0 mm in the LR, AP and SI directions, respectively. The observed ranges of average excursions among all patients were 0.2 to 5.1 mm, 0.1 to 5. 9 mm, and 0.6 to 7.8 mm in the LR, AP, and SI directions, respectively. CONCLUSIONS This study demonstrates that intrafraction targeting errors can be within 2 mm, and interfraction shifts from free-breathing spine to Active Breathing Coordinator breath-hold target can be as high as 8 mm. Values that deviate significantly would need further investigation to rule out factors such as local progression, bowel gas, or fiducial shift before treatment.
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Affiliation(s)
- Roland Forbang Teboh
- Johns Hopkins University School of Medicine, Baltimore, Maryland; John Theurer Cancer Center, Hackensack University Medical Center, Hackensack, New Jersey.
| | - Senthamizhchelvan Srinivasan
- Johns Hopkins University School of Medicine, Baltimore, Maryland; Memorial Health care system, Chattanooga, Tennessee
| | | | | | - Joseph M Herman
- Johns Hopkins University School of Medicine, Baltimore, Maryland; MD Anderson Cancer Center, Houston, Texas
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14
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Gensanne D, Hadj Henni A, Lauzin Y, Clarisse P, Thureau S. [Inter- and intrafraction imaging during stereotactic body radiation therapy: Which solutions for which tumours?]. Cancer Radiother 2019; 23:891-895. [PMID: 31615729 DOI: 10.1016/j.canrad.2019.09.001] [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: 07/15/2019] [Revised: 08/29/2019] [Accepted: 09/02/2019] [Indexed: 10/25/2022]
Abstract
Due to high dose gradients, stereotactic body radiation therapy requires high precision in the location of the tumour. Uncertainties in the positioning can introduce serious damage on organs at risk and consequently can reduce tumour local control. A better tumour location can be achieved by controlling its position with an efficient inter and intrafraction imaging procedure. The various imaging techniques available on treatment systems are presented and performances are discussed. Finally, propositions are given in terms of imaging system according to the location treated by stereotactic body radiation therapy.
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Affiliation(s)
- D Gensanne
- Centre Henri-Becquerel, département de radiothérapie et de physique médicale, rue d'Amiens, CS 11516, 76038 Rouen cedex 1, France.
| | - A Hadj Henni
- Centre Henri-Becquerel, département de radiothérapie et de physique médicale, rue d'Amiens, CS 11516, 76038 Rouen cedex 1, France
| | - Y Lauzin
- Centre Henri-Becquerel, département de radiothérapie et de physique médicale, rue d'Amiens, CS 11516, 76038 Rouen cedex 1, France
| | - P Clarisse
- Centre Henri-Becquerel, département de radiothérapie et de physique médicale, rue d'Amiens, CS 11516, 76038 Rouen cedex 1, France
| | - S Thureau
- Centre Henri-Becquerel, département de radiothérapie et de physique médicale, rue d'Amiens, CS 11516, 76038 Rouen cedex 1, France; Quantif-Litis EA 4108, université de Rouen, 76000 Rouen, France
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15
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Choi GW, Suh Y, Das P, Herman J, Holliday E, Koay E, Koong AC, Krishnan S, Minsky BD, Smith GL, Taniguchi CM, Beddar S. Assessment of setup uncertainty in hypofractionated liver radiation therapy with a breath-hold technique using automatic image registration-based image guidance. Radiat Oncol 2019; 14:154. [PMID: 31470860 PMCID: PMC6717376 DOI: 10.1186/s13014-019-1361-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 08/21/2019] [Indexed: 12/25/2022] Open
Abstract
Background Target localization in radiation therapy is affected by numerous sources of uncertainty. Despite measures to minimize the breathing motion, the treatment of hypofractionated liver radiation therapy is further challenged by residual uncertainty coming from involuntary organ motion and daily changes in the shape and location of abdominal organs. To address the residual uncertainty, clinics implement image-guided radiation therapy at varying levels of soft-tissue contrast. This study utilized the treatment records from the patients that have received hypofractionated liver radiation therapy using in-room computed tomography (CT) imaging to assess the setup uncertainty and to estimate the appropriate planning treatment volume (PTV) margins in the absence of in-room CT imaging. Methods We collected 917 pre-treatment daily in-room CT images from 69 patients who received hypofractionated radiation therapy to the liver with the inspiration breath-hold technique. For each treatment, the daily CT was initially aligned to the planning CT based on the shape of the liver automatically using a CT-CT alignment software. After the initial alignment, manual shift corrections were determined by visual inspection of the two images, and the corrections were applied to shift the patient to the physician-approved treatment position. Considering the final alignment as the gold-standard setup, systematic and random uncertainties in the automatic alignment were quantified, and the uncertainties were used to calculate the PTV margins. Results The median discrepancy between the final and automatic alignment was 1.1 mm (0–24.3 mm), and 38% of treated fractions required manual corrections of ≥3 mm. The systematic uncertainty was 1.5 mm in the anterior-posterior (AP) direction, 1.1 mm in the left-right (LR) direction, and 2.4 mm in the superior-inferior (SI) direction. The random uncertainty was 2.2 mm in the AP, 1.9 mm in the LR, and 2.2 mm in the SI direction. The PTV margins recommended to be used in the absence of in-room CT imaging were 5.3 mm in the AP, 3.5 mm in the LR, and 5.1 mm in the SI direction. Conclusions Manual shift correction based on soft-tissue alignment is substantial in the treatment of the abdominal region. In-room CT can reduce PTV margin by up to 5 mm, which may be especially beneficial for dose escalation and normal tissue sparing in hypofractionated liver radiation therapy.
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Affiliation(s)
- Gye Won Choi
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Yelin Suh
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Prajnan Das
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Joseph Herman
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Emma Holliday
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Eugene Koay
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Albert C Koong
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Sunil Krishnan
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Bruce D Minsky
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Grace L Smith
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Cullen M Taniguchi
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Sam Beddar
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA. .,The University of Texas Graduate School of Biomedical Sciences at Houston, Houston, TX, 77030, USA.
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16
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Scher N, Janoray G, Riet FG, Le Bayon AG, Debbi K, Lévy S, Louisot P, Garaud P, Chajon E, Barillot I, Salamé É, de Crevoisier R, Chapet S, Calais G. [Stereotactic body radiation therapy for hepatocellular carcinoma: Results from a retrospective multicentre study]. Cancer Radiother 2019; 23:104-115. [PMID: 30952560 DOI: 10.1016/j.canrad.2018.07.138] [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: 06/18/2018] [Revised: 07/24/2018] [Accepted: 07/29/2018] [Indexed: 01/27/2023]
Abstract
PURPOSE The purpose of this paper was to describe local control, overall survival, progression-free survival and toxicity of CyberKnife®-based stereotactic body radiation therapy of hepatocellular carcinoma. MATERIAL AND METHODS Records of all the patients treated for hepatocellular carcinoma at the Eugene-Marquis cancer centre, Rennes and the Bretonneau hospital, Tours (France), between November 2010 and December 2016, were reviewed. Radiation therapy was performed as a salvage treatment, while awaiting liver transplantation or if no other treatment was possible. RESULTS One hundred and thirty-six patients were consecutively included in the study. The median follow-up was 13months. Median total dose prescribed, fractionation and overall treatment time were respectively 45Gy, three fractions and 5 days. Overall survival, progression-free survival and local control rates at 1year and 2years were 79.8 % and 63.5 %, 61.3 % and 39.4 %; 94.5 % and 91 %. Two grade 3 acute toxicity events and two grade 4 late toxicity events corresponding to a duodenal ulcer have been reported. Seven patients underwent classic radiation-induced hepatitis and 13 patients showed non-classical radiation-induced hepatitis. Barcelona Clinic Liver Cancer stage, World Health Organisation grade and planning target volume were correlated with overall survival in univariate Cox analysis. CONCLUSION Stereotactic body radiation therapy is effective and well-tolerated for inoperable hepatocellular carcinoma or as a bridge to liver transplantation. Toxicity is mainly related to cirrhotic background and requires a selection of patients and strict dose constraints.
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Affiliation(s)
- N Scher
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France.
| | - G Janoray
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
| | - F-G Riet
- Département de radiothérapie, centre de lutte contre le cancer Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
| | - A-G Le Bayon
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
| | - K Debbi
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
| | - S Lévy
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
| | - P Louisot
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
| | - P Garaud
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
| | - E Chajon
- Département de radiothérapie, centre de lutte contre le cancer Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
| | - I Barillot
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
| | - É Salamé
- Département de chirurgie digestive, oncologique et transplantation hépatique, CHRU de Tours, 37044 Chambray-lès-Tours, France
| | - R de Crevoisier
- Département de radiothérapie, centre de lutte contre le cancer Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
| | - S Chapet
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
| | - G Calais
- Centre Henry-S.-Kaplan, clinique d'oncologie radiothérapie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
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17
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The Clinical and Dosimetric Impact of Real-Time Target Tracking in Pancreatic SBRT. Int J Radiat Oncol Biol Phys 2018; 103:268-275. [PMID: 30145394 DOI: 10.1016/j.ijrobp.2018.08.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/28/2018] [Accepted: 08/10/2018] [Indexed: 12/13/2022]
Abstract
PURPOSE Motion often hinders the safe delivery of ablative doses of radiation in the treatment of pancreatic tumors. Real-time tumor-tracking methods are an emerging technique to increase the accuracy of delivery. In this study, we report on a large, retrospective cohort of pancreatic patients treated with real-time, fiducial-based, kV-image guidance of stereotactic body radiation therapy (SBRT). The purpose of our study was to determine the impact of real-time tracking on treatment accuracy, tumor dose, and clinical workflow. METHODS AND MATERIALS Real-time tracking data from 68 patients treated with pancreatic SBRT were analyzed. The kV images orthogonal to the treatment beam were acquired in real time during treatment to visualize the location of implanted fiducial markers. Positional corrections were made if the fiducial markers were observed >3 mm from the expected reference position. We recorded the frequency and nature of treatment interventions resulting from real-time tracking and derived a neural network-based dosimetric model to calculate the impact of these in-treatment interventions on target dose. RESULTS Treatment pauses that required patient realignment because of real-time tumor tracking occurred during 32% of all fractions. The median magnitude of realignment shifts was 5.2 mm (range, 2.1-18.9 mm). Forty-five percent of shifts resulted in dosimetric differences to the tumor; of these, the median point dose difference was 23% ± 22% of prescription dose (maximum, 94%). The number of pauses per fraction was significantly higher in patients treated with respiratory gating (vs abdominal compression) and in patients with greater treatment time. CONCLUSION Fiducial-based, real-time target tracking is clinically feasible for pancreatic SBRT treatment. Our data indicate that real-time tumor tracking leads to patient realignment in 32% of cases and results in significant benefits to target coverage. The increased accuracy of real-time target tracking may potentially enable safe dose escalation in pancreatic SBRT.
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18
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Stereotactic body radiotherapy (SBRT) for patients with locally advanced pancreatic cancer: A single center experience. Dig Liver Dis 2018; 50:396-400. [PMID: 29326012 DOI: 10.1016/j.dld.2017.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/04/2017] [Accepted: 12/04/2017] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Despite advances in treatment, notably in systemic therapy, the prognosis of pancreatic adenocarcinoma (PADC) remains dismal. Stereotactic body radiotherapy (SBRT) is an emerging tool in the complex management of PADC. We review outcomes of SBRT for PADC at our institution. METHODS We reviewed patients treated with SBRT for either unresectable PADC or locally recurrent PADC after surgery. Treatment was delivered using a robotic radiosurgery system with respiratory tracking. The median prescribed dose was 30 Gy (30-35 Gy), delivered in 5-6 fractions. Toxicities were reported as per CTCAE v4.0. Survival was estimated using the Kaplan-Meier method. RESULTS Between October 2010 and March 2016, 21 patients were treated at our institution. The median follow-up was 7 months (range: 1-28). The 1-year local control rate was 57%. The 1-year overall survival was 25% for locally advanced patients and 67% for those with local recurrences (p = 0.27). Eighty percent of cancer related deaths were due to metastatic progression. Five patients (24%) had Grade I-II gastrointestinal acute toxicity; one patient had fatal gastrointestinal bleeding 6 months after SBRT. CONCLUSION In PADC, fractionated SBRT dose schedules near 30 Gy may strike the best balance of local control and bowel toxicity. More work is required to integrate pancreatic SBRT with modern systemic therapy.
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19
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Lacornerie T, Rio E, Mahé MA. [Stereotactic body radiation therapy for hepatic malignancies: Organs at risk, uncertainties margins, doses]. Cancer Radiother 2017; 21:574-579. [PMID: 28844506 DOI: 10.1016/j.canrad.2017.07.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 07/20/2017] [Accepted: 07/22/2017] [Indexed: 11/30/2022]
Abstract
Stereotactic body radiation therapy for primary and metastatic hepatic malignancies can be performed in association and/or as an alternative to surgery and radiofrequency. The consequences of the great number of techniques available are heterogeneity in contouring, dose prescription and in determination of dose constraints for organs at risk. The objective of this paper is to improve the quality and safety and to help the diffusion of this technique for a majority of patients. In 2016, the French Society of Radiation Oncology (SFRO) published guidelines for external radiotherapy and brachytherapy ("Recorad"). This paper is an update of these recommendations considering recent publications.
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Affiliation(s)
- T Lacornerie
- Service de physique médicale, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59020 Lille, France.
| | - E Rio
- Service de radiothérapie, institut de cancérologie de l'Ouest René-Gauducheau, boulevard Professeur-Jacques-Monod, 44805 Saint-Herblain, France
| | - M-A Mahé
- Service de radiothérapie, institut de cancérologie de l'Ouest René-Gauducheau, boulevard Professeur-Jacques-Monod, 44805 Saint-Herblain, France
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20
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Archibald-Heeren BR, Byrne MV, Hu Y, Cai M, Wang Y. Robust optimization of VMAT for lung cancer: Dosimetric implications of motion compensation techniques. J Appl Clin Med Phys 2017; 18:104-116. [PMID: 28786213 PMCID: PMC5874938 DOI: 10.1002/acm2.12142] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 12/25/2022] Open
Abstract
In inverse planning of lung radiotherapy, techniques are required to ensure dose coverage of target disease in the presence of tumor motion as a result of respiration. A range of published techniques for mitigating motion effects were compared for dose stability across 5 breath cycles of ±2 cm. Techniques included planning target volume (PTV) expansions, internal target volumes with (OITV) and without tissue override (ITV), average dataset scans (ADS), and mini-max robust optimization. Volumetric arc therapy plans were created on a thorax phantom and verified with chamber and film measurements. Dose stability was compared by DVH analysis in calculations across all geometries. The lung override technique resulted in a substantial lack of dose coverage (-10%) to the tumor in the presence of large motion. PTV, ITV and ADS techniques resulted in substantial (up to 25%) maximum dose increases where solid tissue travelled into low density optimized regions. The results highlight the need for care in optimization of highly heterogeneous where density variations may occur with motion. Robust optimization was shown to provide greater stability in both maximum (<3%) and minimum dose variations (<2%) over all other techniques.
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Affiliation(s)
- Ben R Archibald-Heeren
- Radiation Oncology Centre, Sydney Adventist Hospital, Sydney, NSW, Australia.,Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia
| | - Mikel V Byrne
- Radiation Oncology Centre, Sydney Adventist Hospital, Sydney, NSW, Australia
| | - Yunfei Hu
- Radiation Oncology Centre, Sydney Adventist Hospital, Sydney, NSW, Australia.,Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia
| | - Meng Cai
- Radiation Oncology Centre, Sydney Adventist Hospital, Sydney, NSW, Australia.,Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia
| | - Yang Wang
- Radiation Oncology Centre, Sydney Adventist Hospital, Sydney, NSW, Australia.,Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia
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21
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Wu G, Verma V, Haefner MF, Li S, Lin C. Feasibility and reproducibility of substituting oral contrast with water for duodenal volume delineation in patients undergoing pancreatic stereotactic body radiotherapy. J Gastrointest Oncol 2017; 8:705-709. [PMID: 28890821 DOI: 10.21037/jgo.2017.04.03] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND This is the first known report evaluating the feasibility of substituting oral contrast with water in efforts to delineate the duodenum for pancreatic stereotactic body radiotherapy (SBRT). METHODS From January 2015 to August 2016, 13 patients were simulated after ingestion of 8 ounces of water approximately 15-20 min prior to their simulation scan. We examined the feasibility of contouring the duodenum thereafter, and measured the duodenal volume as well as its variation. Comparison was made to 40 patients treated from January 2009 to February 2012 on a prospective trial who used oral contrast. Group comparisons were performed by the Mann-Whitney U test. RESULTS The duodenum was identified in all 13 patients who used water instead of oral contrast without subjective difficulty. In this group, the median duodenal volume was 72.86 cm3 (range, 44.61-130.90 cm3). In the oral contrast group, median duodenal volume was 86.21 cm3 (range, 50.11-157.89 cm3) There were no significant differences between groups (P=0.115). The approach was reproducible, as all patients were able to drink the same amount of water 15-20 min prior to each SBRT fraction to keep duodenal volumes subjectively similar to volumes on the simulation CT scan. CONCLUSIONS This novel approach is effective and reproducible in delineating the duodenum for treatment planning and daily setup.
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Affiliation(s)
- Guangyin Wu
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA.,Department of Radiation Oncology Henan Provincial People's Hospital (University of Zhengzhou People's Hospital), Zhengzhou 450000, China
| | - Vivek Verma
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Matthias F Haefner
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany
| | - Sicong Li
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Chi Lin
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA
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22
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Arai TJ, Nofiele J, Madhuranthakam AJ, Yuan Q, Pedrosa I, Chopra R, Sawant A. Characterizing spatiotemporal information loss in sparse-sampling-based dynamic MRI for monitoring respiration-induced tumor motion in radiotherapy. Med Phys 2017; 43:2807-2820. [PMID: 27277029 DOI: 10.1118/1.4948684] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
PURPOSE Sparse-sampling and reconstruction techniques represent an attractive strategy to achieve faster image acquisition speeds, while maintaining adequate spatial resolution and signal-to-noise ratio in rapid magnetic resonance imaging (MRI). The authors investigate the use of one such sequence, broad-use linear acquisition speed-up technique (k-t BLAST) in monitoring tumor motion for thoracic and abdominal radiotherapy and examine the potential trade-off between increased sparsification (to increase imaging speed) and the potential loss of "true" information due to greater reliance on a priori information. METHODS Lung tumor motion trajectories in the superior-inferior direction, previously recorded from ten lung cancer patients, were replayed using a motion phantom module driven by an MRI-compatible motion platform. Eppendorf test tubes filled with water which serve as fiducial markers were placed in the phantom. The modeled rigid and deformable motions were collected in a coronal image slice using balanced fast field echo in conjunction with k-t BLAST. Root mean square (RMS) error was used as a metric of spatial accuracy as measured trajectories were compared to input data. The loss of spatial information was characterized for progressively increasing acceleration factor from 1 to 16; the resultant sampling frequency was increased approximately from 2.5 to 19 Hz when the principal direction of the motion was set along frequency encoding direction. In addition to the phantom study, respiration-induced tumor motions were captured from two patients (kidney tumor and lung tumor) at 13 Hz over 49 s to demonstrate the impact of high speed motion monitoring over multiple breathing cycles. For each subject, the authors compared the tumor centroid trajectory as well as the deformable motion during free breathing. RESULTS In the rigid and deformable phantom studies, the RMS error of target tracking at the acquisition speed of 19 Hz was approximately 0.3-0.4 mm, which was smaller than the reconstructed pixel resolution of 0.67 mm. In the patient study, the dynamic 2D MRI enabled the monitoring of cycle-to-cycle respiratory variability present in the tumor position. It was seen that the range of centroid motion as well as the area covered due to target motion during each individual respiratory cycle was underestimated compared to the entire motion range observed over multiple breathing cycles. CONCLUSIONS The authors' initial results demonstrate that sparse-sampling- and reconstruction-based dynamic MRI can be used to achieve adequate image acquisition speeds without significant information loss for the task of radiotherapy guidance. Such monitoring can yield spatial and temporal information superior to conventional offline and online motion capture methods used in thoracic and abdominal radiotherapy.
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Affiliation(s)
- Tatsuya J Arai
- Department of Radiation Oncology, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Joris Nofiele
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Ananth J Madhuranthakam
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas 75390 and Advanced Imaging Research Center, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Qing Yuan
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Ivan Pedrosa
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas 75390 and Advanced Imaging Research Center, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Rajiv Chopra
- Department of Radiology, UT Southwestern Medical Center, Dallas, Texas 75390 and Advanced Imaging Research Center, UT Southwestern Medical Center, Dallas, Texas 75390
| | - Amit Sawant
- Department of Radiation Oncology, UT Southwestern Medical Center, Dallas, Texas 75390; Department of Radiology, UT Southwestern Medical Center, Dallas, Texas 75390; and Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, Maryland, 21201
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Hu Y, Zhou YK, Chen YX, Zeng ZC. Magnitude and influencing factors of respiration-induced liver motion during abdominal compression in patients with intrahepatic tumors. Radiat Oncol 2017; 12:9. [PMID: 28073377 PMCID: PMC5223487 DOI: 10.1186/s13014-016-0762-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 12/30/2016] [Indexed: 12/26/2022] Open
Abstract
PURPOSE The purpose of this study was to use 4-dimensional-computed tomography (4D-CT) to evaluate respiration-induced liver motion magnitude and influencing factors in patients with intrahepatic tumors undergoing abdominal compression. METHODS From January 2012 to April 2016, 99 patients with intrahepatic tumors were included in this study. They all underwent 4D-CT to assess respiratory liver motion. This was performed during abdominal compression in 53 patients and during free-breathing (no abdominal compression) in 46 patients. We defined abdominal compression as being effective in managing the breath amplitude if respiration-induced liver motion in the cranial-caudal (CC) direction during compression was ≤5 mm and as being ineffective if >5 mm of motion was observed. Gender, age, body mass index (BMI), transarterial chemoembolization history, liver resection history, tumor area, tumor number, and tumor size (diameter) were determined. Multivariate logistic regression analysis was used to analyze influencing factors associated with a breath amplitude ≤5 mm in the CC direction. RESULTS The mean respiration-induced liver motion during abdominal compression in the left-right (LR), CC, anterior-posterior (AP), and 3-dimensional vector directions was 2.9 ± 1.2 mm, 5.3 ± 2.2 mm, 2.3 ± 1.1 mm and 6.7 ± 2.1 mm, respectively. Univariate analysis indicated that gender and BMI significantly affected abdominal compression effectiveness (both p < 0.05). Multivariate analysis confirmed these two factors as significant predictors of effective abdominal compression: gender (p = 0.030) and BMI (p = 0.006). There was a strong correlation between gender and compression effectiveness (odds ratio [OR] = 7.450) and an even stronger correlation between BMI and compression effectiveness (OR = 10.842). CONCLUSIONS The magnitude of respiration-induced liver motion of patients with intrahepatic carcinoma undergoing abdominal compression is affected by gender and BMI, with abdominal compression being less effective in men and overweight patients.
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Affiliation(s)
- Yong Hu
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, 180, Feng Lin Road, Shanghai, 200032 China
| | - Yong-Kang Zhou
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, 180, Feng Lin Road, Shanghai, 200032 China
| | - Yi-Xing Chen
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, 180, Feng Lin Road, Shanghai, 200032 China
| | - Zhao-Chong Zeng
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, 180, Feng Lin Road, Shanghai, 200032 China
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Fontana G, Riboldi M, Gianoli C, Chirvase CI, Villa G, Paganelli C, Summers PE, Tagaste B, Pella A, Fossati P, Ciocca M, Baroni G, Valvo F, Orecchia R. MRI quantification of pancreas motion as a function of patient setup for particle therapy -a preliminary study. J Appl Clin Med Phys 2016; 17:60-75. [PMID: 27685119 PMCID: PMC5874090 DOI: 10.1120/jacmp.v17i5.6236] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 03/31/2016] [Accepted: 03/23/2016] [Indexed: 01/01/2023] Open
Abstract
Particle therapy (PT) has shown positive therapeutic results in local control of locally advanced pancreatic lesions. PT effectiveness is highly influenced by target localization accuracy both in space, since the pancreas is located in proximity to radiosensitive vital organs, and in time as it is subject to substantial breathing-related motion. The purpose of this preliminary study was to quantify pancreas range of motion under typical PT treatment conditions. Three common immobilization devices (vacuum cushion, thermoplastic mask, and compressor belt) were evaluated on five male patients in prone and supine positions. Retrospective four-dimensional magnetic resonance imaging data were reconstructed for each condition and the pancreas was manually segmented on each of six breathing phases. A k-means algorithm was then applied on the manually segmented map in order to obtain clusters representative of the three pancreas segments: head, body, and tail. Centers of mass (COM) for the pancreas and its segments were computed, as well as their displacements with respect to a reference breathing phase (beginning exhalation). The median three-dimensional COM displacements were in the range of 3 mm. Latero-lateral and superior-inferior directions had a higher range of motion than the anterior-posterior direction. Motion analysis of the pancreas segments showed slightly lower COM displacements for the head cluster compared to the tail cluster, especially in prone position. Statistically significant differences were found within patients among the investigated setups. Hence a patient-specific approach, rather than a general strategy, is suggested to define the optimal treatment setup in the frame of a millimeter positioning accuracy.
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Heinz C, Gerum S, Freislederer P, Ganswindt U, Roeder F, Corradini S, Belka C, Niyazi M. Feasibility study on image guided patient positioning for stereotactic body radiation therapy of liver malignancies guided by liver motion. Radiat Oncol 2016; 11:88. [PMID: 27350636 PMCID: PMC4924279 DOI: 10.1186/s13014-016-0662-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 06/19/2016] [Indexed: 02/01/2023] Open
Abstract
Background Fiducial markers are the superior method to compensate for interfractional motion in liver SBRT. However this method is invasive and thereby limits its application range. In this retrospective study, the compensation method for the interfractional motion using fiducial markers (gold standard) was compared to a new non-invasive approach, which does rely on the organ motion of the liver and the relative tumor position within this volume. Methods We analyzed six patients (3 m, 3f) treated with SBRT in 2014. After fiducial marker implantation, all patients received a treatment CT (free breathing, without abdominal compression) and a 4D-CT (consisting of 10 respiratory phases). For all patients the gross tumor volumes (GTVs), internal target volume (ITV), planning target volume (PTV), internal marker target volumes (IMTVs) and the internal liver target volume (ILTV) were delineated based on the CT and 4D-CT images. CBCT imaging was used for the standard treatment setup based on the fiducial markers. According to the patient coordinates the 3 translational compensation values (tx, ty, tz) for the interfractional motion were calculated by matching the blurred fiducial markers with the corresponding IMTV structures. 4 observers were requested to recalculate the translational compensation values for each CBCT (31) based on the ILTV structures. The differences of the translational compensation values between the IMTV and ILTV approach were analyzed. Results The magnitude of the mean absolute 3D registration error with regard to the gold standard overall patients and observers was 0.50 cm ± 0.28 cm. Individual registration errors up to 1.3 cm were observed. There was no significant overall linear correlation between the respiratory motion and the registration error of the ILTV approach. Conclusions Two different methods to calculate the translational compensation values for interfractional motion in stereotactic liver therapy were evaluated. The registration accuracy of the ILTV approach is mainly limited by the non-rigid behavior of the liver and the individual registration experience of the observer. The ILTV approach lacks the accuracy that would be desired for stereotactic radiotherapy of the liver.
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Affiliation(s)
- Christian Heinz
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany.
| | - Sabine Gerum
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
| | | | - Ute Ganswindt
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
| | - Falk Roeder
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
| | | | - Claus Belka
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
| | - Maximilian Niyazi
- Department of Radiation Oncology, LMU Munich, 81377, Munich, Germany
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Abstract
Purpose With the advent of magnetic resonance imaging (MRI) guided radiation therapy, internal organ motion can be imaged simultaneously during treatment. In this study, we evaluate the feasibility of pancreas MRI segmentation using state-of-the-art segmentation methods. Methods and materials T2-weighted half-Fourier acquisition single-shot turbo spin-echo and T1 weighted volumetric interpolated breath-hold examination images were acquired on 3 patients and 2 healthy volunteers for a total of 12 imaging volumes. A novel dictionary learning (DL) method was used to segment the pancreas and compared to t mean-shift merging, distance regularized level set, and graph cuts, and the segmentation results were compared with manual contours using Dice's index, Hausdorff distance, and shift of the center of the organ (SHIFT). Results All volumetric interpolated breath-hold examination images were successfully segmented by at least 1 of the autosegmentation method with Dice's index >0.83 and SHIFT ≤2 mm using the best automated segmentation method. The automated segmentation error of half-Fourier acquisition single-shot turbo spin-echo images was significantly greater. DL is statistically superior to the other methods in Dice’s overlapping index. For the Hausdorff distance and SHIFT measurement, distance regularized level set and DL performed slightly superior to the graph cuts method, and substantially superior to mean-shift merging. DL required least human supervision and was faster to compute. Conclusions Our study demonstrated potential feasibility of automated segmentation of the pancreas on MRI scans with minimal human supervision at the beginning of imaging acquisition. The achieved accuracy is promising for organ localization.
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Myrehaug S, Sahgal A, Russo SM, Lo SS, Rosati LM, Mayr NA, Lock M, Small W, Dorth JA, Ellis RJ, Teh BS, Herman JM. Stereotactic body radiotherapy for pancreatic cancer: recent progress and future directions. Expert Rev Anticancer Ther 2016; 16:523-30. [PMID: 26999329 DOI: 10.1586/14737140.2016.1168698] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Despite advances in surgical, medical, and radiation therapy for pancreatic cancer, the prognosis remains poor. At this time, the only chance for long-term survival is surgical resection. More challenging is the optimal management of unresectable locally advanced pancreatic cancer, which has historically been treated with concurrent chemoradiation or chemotherapy alone. However, the survival and local control benefit of conventional radiotherapy in addition to chemotherapy was unclear. More recently, stereotactic body radiotherapy (SBRT) is emerging as a viable approach to maximizing local tumor control with a tolerable side effect profile. SBRT achieves sharp dose fall-off facilitating safe delivery of highly focused radiation to the tumor over 1-5 days. Although the optimal regimen of pancreas SBRT has not yet been established, its short treatment course limits the delay of additional. Future directions involve prospective study of pancreas SBRT and exploration of biomarkers and imaging technology in order to adopt a personalized management paradigm.
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Affiliation(s)
- Sten Myrehaug
- a Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre , University of Toronto , Toronto , ON , Canada
| | - Arjun Sahgal
- a Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre , University of Toronto , Toronto , ON , Canada
| | - Suzanne M Russo
- b Department of Radiation Oncology , University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center , Cleveland , OH , USA
| | - Simon S Lo
- b Department of Radiation Oncology , University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center , Cleveland , OH , USA
| | - Lauren M Rosati
- c Department of Radiation Oncology & Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center , Johns Hopkins University , Baltimore , MD , USA
| | - Nina A Mayr
- d Department of Radiation Oncology , University of Washington , Seattle , WA , USA
| | - Michael Lock
- e Department of Radiation Oncology, London Regional Cancer Program , University of Western Ontario , London , ON , Canada
| | - William Small
- f Department of Radiation Oncology , Loyola University Medical Center , Maywood , IL , USA
| | - Jennifer A Dorth
- b Department of Radiation Oncology , University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center , Cleveland , OH , USA
| | - Rodney J Ellis
- b Department of Radiation Oncology , University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center , Cleveland , OH , USA
| | - Bin S Teh
- g Department of Radiation Oncology , Houston Methodist Hospital, Weill Cornell Medical College , Houston , TX , USA
| | - Joseph M Herman
- c Department of Radiation Oncology & Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center , Johns Hopkins University , Baltimore , MD , USA
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Al-Hawary MM, Francis IR, Anderson MA. Pancreatic Solid and Cystic Neoplasms: Diagnostic Evaluation and Intervention. Radiol Clin North Am 2015; 53:1037-48. [PMID: 26321452 DOI: 10.1016/j.rcl.2015.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
High-resolution imaging modalities, such as multi-detector computed tomography, MR imaging, and endoscopic ultrasound, are frequently used alone or in combination to characterize focal solid and cystic pancreatic neoplasms. Imaging in solid pancreatic neoplasms, typically adenocarcinoma and neuroendocrine tumors, is primarily used to detect and stage the extent of the tumor and to determine if complete surgical resection for cure is feasible. In cystic pancreatic masses, imaging aims to differentiate benign nonmucinous cystic lesions from potentially or frankly malignant mucin-producing cysts. Several noninvasive and invasive treatment options can be performed if surgical resection is not possible or contraindicated.
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Affiliation(s)
- Mahmoud M Al-Hawary
- Division of Abdominal Imaging, Department of Radiology, University of Michigan Hospitals, 1500 East Medical Center Drive, Room B1 D502, Ann Arbor, MI 48109, USA.
| | - Isaac R Francis
- Division of Abdominal Imaging, Department of Radiology, University of Michigan Hospitals, 1500 East Medical Center Drive, Room B1 D540, Ann Arbor, MI 48109, USA
| | - Michelle A Anderson
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan Hospitals, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
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Golkar E, Rahni AAA, Sulaiman R. Comparison of intensity based deformable registration methods for respiratory motion modelling from 4D MRI. 2015 IEEE INTERNATIONAL CONFERENCE ON SIGNAL AND IMAGE PROCESSING APPLICATIONS (ICSIPA) 2015. [DOI: 10.1109/icsipa.2015.7412231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Abd. Rahni AA, Lewis E, Wells K. Inter-subject variability of respiratory motion from 4D MRI. 2015 INTERNATIONAL CONFERENCE ON BIOSIGNAL ANALYSIS, PROCESSING AND SYSTEMS (ICBAPS) 2015. [DOI: 10.1109/icbaps.2015.7292225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Rahni AA, Lewis E, Wells K. Characterisation of inter- and intra-subject variation of internal-external respiratory motion correspondence. 2014 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) 2014. [DOI: 10.1109/nssmic.2014.7430929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Xu H, Gong G, Wei H, Chen L, Chen J, Lu J, Liu T, Zhu J, Yin Y. Feasibility and potential benefits of defining the internal gross tumor volume of hepatocellular carcinoma using contrast-enhanced 4D CT images obtained by deformable registration. Radiat Oncol 2014; 9:221. [PMID: 25319176 PMCID: PMC4205285 DOI: 10.1186/s13014-014-0221-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 09/24/2014] [Indexed: 12/20/2022] Open
Abstract
Objective To study the feasibility and the potential benefits of defining the internal gross tumor volume (IGTV) of hepatocellular carcinoma (HCC) using contrast-enhanced 4D CT images obtained by combining arterial-phase (AP) contrast-enhanced (CE) 3D CT and non-contrast-enhanced (NCE) 4D CT images using deformable registration (DR). Methods Ten HCC patients who had received radiotherapy beforehand were selected for this study. The following CT simulation images were acquired sequentially: NCE 4D CT in free breathing, NCE 3D CT and APCE 3D CT in end-expiration breath holding. All 4D CT images were sorted into ten phases according to breath cycle (CT00 ~ CT90). Gross tumor volumes (GTVs) were contoured on all CT images and the IGTV-1 was obtained by merging the GTVs in each phase of 4D CT images. The GTV on the APCE 3D CT image was deformably registered to each 4D CT phase image according to liver shape using RayStationTM 3.99.0.7 version treatment planning system. The IGTV-DR was obtained by merging the GTVs after DR on the 4D CT images. Volume differences among the GTVs and between the IGTV-1 and the IGTV-DR were compared. Results The edge of most lesions could be definitively identified using APCE 3D CT images compared to NCE 4D and 3D CT images. The GTV volume on APCE 3D CT images increased by an average of 34.79% (P < 0.05). There was no significant difference among the GTV volumes obtained using NCE 4D and 3D CT images (P > 0.05). The GTV volumes after DR on 4D CT different phase images increased by an average of 36.29% (P < 0.05), as was observed using the APCE 3D CT image (P > 0.05). Lastly, the volume of IGTV-DR increased by an average of 19.91% compared to that of IGTV-1 (P < 0.05). Conclusion NCE 4D CT imaging alone has the potential risk of missing a partial volume of the HCC. The combination of APCE 3D CT and NCE 4D CT images using the DR technique improved the accuracy of the definition of the IGTV in HCC.
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Affiliation(s)
- Hua Xu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Laboratory of Radiation Oncology, Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, China.
| | - Guanzhong Gong
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Laboratory of Radiation Oncology, Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, China.
| | - Hong Wei
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Laboratory of Radiation Oncology, Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, China.
| | - Lusheng Chen
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Laboratory of Radiation Oncology, Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, China.
| | - Jinhu Chen
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Laboratory of Radiation Oncology, Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, China.
| | - Jie Lu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Laboratory of Radiation Oncology, Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, China.
| | - Tonghai Liu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Laboratory of Radiation Oncology, Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, China.
| | - Jian Zhu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Laboratory of Radiation Oncology, Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, China.
| | - Yong Yin
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Laboratory of Radiation Oncology, Shandong Academy of Medical Sciences, 440 Jiyan Road, Jinan, 250117, China.
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Moningi S, Marciscano AE, Rosati LM, Ng SK, Teboh Forbang R, Jackson J, Chang DT, Koong AC, Herman JM. Stereotactic body radiation therapy in pancreatic cancer: the new frontier. Expert Rev Anticancer Ther 2014; 14:1461-75. [PMID: 25183386 DOI: 10.1586/14737140.2014.952286] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Pancreatic cancer (PCA) remains a disease with a poor prognosis. The majority of PCA patients are unable to undergo surgical resection, which is the only potentially curative option at this time. A combination of chemotherapy and chemoradiation (CRT) are standard options for patients with locally advanced, unresectable disease, however, local control and patient outcomes remains poor. Stereotactic body radiation therapy (SBRT) is an emerging treatment option for PCA. SBRT delivers potentially ablative doses to the pancreatic tumor plus a small margin over a short period of time. Early studies with single-fraction SBRT demonstrated excellent tumor control with high rates of toxicity. The implementation of SBRT (3-5 doses) has demonstrated promising outcomes with favorable tumor control and toxicity rates. Herein we discuss the evolving role of SBRT in PCA treatment.
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Affiliation(s)
- Shalini Moningi
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, 401 N. Broadway, Weinberg Suite 1440, Baltimore, MD 21231, USA
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Stereotactic body radiotherapy for liver tumors. Strahlenther Onkol 2014; 190:872-81. [DOI: 10.1007/s00066-014-0714-1] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 06/28/2014] [Indexed: 12/14/2022]
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Abbas H, Chang B, Chen ZJ. Motion management in gastrointestinal cancers. J Gastrointest Oncol 2014; 5:223-35. [PMID: 24982771 DOI: 10.3978/j.issn.2078-6891.2014.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 05/27/2014] [Indexed: 12/17/2022] Open
Abstract
The presence of tumor and organ motions complicates the planning and delivery of radiotherapy for gastrointestinal cancers. Without proper accounting of the movements, target volume could be under-dosed and the nearby normal critical organs could be over-dosed. This situation is further exacerbated by the close proximity of abdominal tumors to many normal organs at risk (OARs). A number of strategies have been developed to deal with tumor and organ motions in radiotherapy. This article presents a review of the techniques used in the evaluation, quantification, and management of tumor and organ motions for radiotherapy of gastrointestinal cancers.
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Affiliation(s)
- Hassan Abbas
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Bryan Chang
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Zhe Jay Chen
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut, USA
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