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Yu CX. Radiotherapy of early‐stage breast cancer. PRECISION RADIATION ONCOLOGY 2023. [DOI: 10.1002/pro6.1183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Affiliation(s)
- Cedric X. Yu
- Radiation Oncology University of Maryland School of Medicine Baltimore Maryland USA
- Xcision Medical Systems Columbia Maryland USA
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Snider JW, Nichols EM, Mutaf YD, Chen S, Molitoris J, Diwanji T, Becker SJ, Feigenberg SJ. Reproducibility of a novel, vacuum-assisted immobilization for breast stereotactic radiotherapy. J Appl Clin Med Phys 2021; 22:8-15. [PMID: 33656237 PMCID: PMC7984473 DOI: 10.1002/acm2.13127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 10/12/2020] [Accepted: 10/18/2020] [Indexed: 11/13/2022] Open
Abstract
A novel, breast‐specific stereotactic radiotherapy device has been developed for delivery of highly conformal, accelerated partial breast irradiation. This device employs a unique, vacuum‐assisted, breast cup immobilization system that applies a gentle, negative pressure to the target breast with the patient in the prone position. A device‐specific patient loader is utilized for simulation scanning and device docking. Prior to clinical activation, a prospective protocol enrolled 25 patients who had been or were to be treated with breast conservation surgery and adjuvant radiotherapy for localized breast cancer. The patients underwent breast cup placement and two separate CT simulation scans. Surgical clips within the breast were mapped and positions measured against the device’s integrated stereotactic fiducial/coordinate system to confirm reproducible and durable immobilization during the simulation, treatment planning, and delivery process for the device. Of the enrolled 25 patients, 16 were deemed eligible for analysis. Seventy‐three clips (median, 4; mean, 4.6; range, 1–8 per patient) were mapped in these selected patients on both the first and second CT scans. X, Y, and Z coordinates were determined for the center point of each clip. Length of vector change in position was determined for each clip between the two scans. The mean displacement of implanted clips was 1.90 mm (median, 1.47 mm; range, 0.44–6.52 mm) (95% CI, 1.6–2.20 mm). Additional analyses stratified clips by position within the breast and depth into the immobilization cup. Overall, this effort validated the clinically utilized 3‐mm planning target volume margin for accurate, reliable, and precise employment of the device.
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Affiliation(s)
- James W Snider
- Department of Radiation Oncology, University of Alabama at Birmingham Alabama, Birmingham, AL, USA
| | - Elizabeth M Nichols
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Yildirim D Mutaf
- Department of Radiation Oncology, Kaiser Permanente, Dublin, CA, USA
| | - Shifeng Chen
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jason Molitoris
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Tejan Diwanji
- Department of Radiation Oncology, University of Miami, Coral Gables, FL, USA
| | - Stewart J Becker
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Steven J Feigenberg
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA
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Parsons D, Zhang Y, Gu X, Lu W. POD‐DOSI: A dedicated dosimetry system for GammaPod commissioning and quality assurance. Med Phys 2020; 47:3647-3657. [DOI: 10.1002/mp.14221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 11/05/2022] Open
Affiliation(s)
- David Parsons
- Department of Radiation Oncology University of Texas Southwestern Medical Center 2280 Inwood Rd. Dallas TX 75390 USA
| | - You Zhang
- Department of Radiation Oncology University of Texas Southwestern Medical Center 2280 Inwood Rd. Dallas TX 75390 USA
| | - Xuejun Gu
- Department of Radiation Oncology University of Texas Southwestern Medical Center 2280 Inwood Rd. Dallas TX 75390 USA
| | - Weiguo Lu
- Department of Radiation Oncology University of Texas Southwestern Medical Center 2280 Inwood Rd. Dallas TX 75390 USA
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Becker S, Sabouri P, Niu Y, Prado K, Chen S, Nichols E, Yi B. Commissioning and acceptance guide for the GammaPod. ACTA ACUST UNITED AC 2019; 64:205021. [DOI: 10.1088/1361-6560/ab41bd] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Snider JW, Mutaf Y, Nichols E, Hall A, Vadnais P, Regine WF, Feigenberg SJ. Projected Improvements in Accelerated Partial Breast Irradiation Using a Novel Breast Stereotactic Radiotherapy Device: A Dosimetric Analysis. Technol Cancer Res Treat 2017; 16:1031-1037. [PMID: 28705082 PMCID: PMC5762064 DOI: 10.1177/1533034617718961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Accelerated partial breast irradiation has caused higher than expected rates of poor cosmesis. At our institution, a novel breast stereotactic radiotherapy device has demonstrated dosimetric distributions similar to those in brachytherapy. This study analyzed comparative dose distributions achieved with the device and intensity-modulated radiation therapy accelerated partial breast irradiation. Nine patients underwent computed tomography simulation in the prone position using device-specific immobilization on an institutional review board–approved protocol. Accelerated partial breast irradiation target volumes (planning target volume_10mm) were created per the National Surgical Adjuvant Breast and Bowel Project B-39 protocol. Additional breast stereotactic radiotherapy volumes using smaller margins (planning target volume_3mm) were created based on improved immobilization. Intensity-modulated radiation therapy and breast stereotactic radiotherapy accelerated partial breast irradiation plans were separately generated for appropriate volumes. Plans were evaluated based on established dosimetric surrogates of poor cosmetic outcomes. Wilcoxon rank sum tests were utilized to contrast volumes of critical structures receiving a percentage of total dose (Vx). The breast stereotactic radiotherapy device consistently reduced dose to all normal structures with equivalent target coverage. The ipsilateral breast V20-100 was significantly reduced (P < .05) using planning target volume_10mm, with substantial further reductions when targeting planning target volume_3mm. Doses to the chest wall, ipsilateral lung, and breast skin were also significantly lessened. The breast stereotactic radiotherapy device’s uniform dosimetric improvements over intensity-modulated accelerated partial breast irradiation in this series indicate a potential to improve outcomes. Clinical trials investigating this benefit have begun accrual.
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Affiliation(s)
- James W Snider
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, MD, USA
| | - Yildirim Mutaf
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Elizabeth Nichols
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Andrea Hall
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, MD, USA
| | - Patrick Vadnais
- Department of Radiation Oncology, University of Maryland Medical Center, Baltimore, MD, USA
| | - William F Regine
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Steven J Feigenberg
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
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Cuaron JJ, MacDonald SM, Cahlon O. Novel applications of proton therapy in breast carcinoma. Chin Clin Oncol 2017; 5:52. [PMID: 27558253 DOI: 10.21037/cco.2016.06.04] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 05/28/2016] [Indexed: 12/18/2022]
Abstract
This review will focus on the indications, clinical experience, and technical considerations of proton beam radiation therapy in the treatment of patients with breast cancer. For patients with early stage disease, proton therapy delivers less dose to non-target breast tissue for patients receiving partial breast irradiation (PBI) therapy, which may result in improved cosmesis but requires further investigation. For patients with locally advanced breast cancer requiring treatment to the regional lymph nodes, proton therapy allows for an improved dosimetric profile compared with conventional photon and electron techniques. Early clinical results demonstrate acceptable toxicity. The possible reduction in cardiopulmonary events as a result of reduced dose to organs at risk will be tested in a randomized control trial of protons vs. photons.
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Affiliation(s)
- John J Cuaron
- Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
| | - Shannon M MacDonald
- Massachusetts General Hospital, Francis H. Burr Proton Therapy Center, Boston, MA 02114-7250, USA
| | - Oren Cahlon
- Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
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Snider JW, Mutaf Y, Nichols E, Hall A, Vadnais P, Regine WF, Feigenberg SJ. Dosimetric Improvements with a Novel Breast Stereotactic Radiotherapy Device for Delivery of Preoperative Partial-Breast Irradiation. Oncology 2016; 92:21-30. [PMID: 27898429 DOI: 10.1159/000449388] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/12/2016] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Partial-breast irradiation (PBI) with external-beam radiotherapy has produced higher than expected rates of fair-to-poor cosmesis. Worsened outcomes have been correlated with larger volumes of breast tissue exposed to radiation. A novel breast-specific stereotactic radiotherapy (BSRT) device (BSRTD) has been developed at our institution and has shown promise in delivering highly conformal dose distributions. We compared normal tissue sparing with this device with that achieved with intensity-modulated radiation therapy (IMRT)-PBI. METHODS Fifteen women previously treated with breast conservation therapy were enrolled on an institutional review board-approved protocol. Each of them underwent CT simulation in the prone position using the BSRTD-specific immobilization system. Simulated postoperative and preoperative treatment volumes were generated based on surgical bed/clip position. Blinded planners generated IMRT-PBI plans and BSRT plans for each set of volumes. These plans were compared based on clinically validated markers for cosmetic outcome and toxicity using a Wilcoxon rank-sum test. RESULTS The BSRT plans consistently reduced the volumes receiving each of several dose levels (Vx) to breast tissue, the chest wall, the lung, the heart, and the skin in both preoperative and postoperative settings (p < 0.05). Preoperative BSRT yielded particularly dramatic improvements. CONCLUSION The novel BSRTD has demonstrated significant dosimetric benefits over IMRT-PBI. Further investigation is currently proceeding through initial clinical trials.
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Affiliation(s)
- James W Snider
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA
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Trajectory Modulated Arc Therapy: A Fully Dynamic Delivery With Synchronized Couch and Gantry Motion Significantly Improves Dosimetric Indices Correlated With Poor Cosmesis in Accelerated Partial Breast Irradiation. Int J Radiat Oncol Biol Phys 2015; 92:1148-1156. [DOI: 10.1016/j.ijrobp.2015.04.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 04/14/2015] [Accepted: 04/21/2015] [Indexed: 11/23/2022]
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Trifiletti DM, Jones R, Showalter SL, Libby BB, Brenin DR, Schroen A, Morris MM, Reardon KA, Showalter TN. Techniques for intraoperative radiation therapy for early-stage breast carcinoma. Future Oncol 2015; 11:1047-58. [DOI: 10.2217/fon.15.26] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
ABSTRACT Intraoperative radiation therapy (IORT) is a method of accelerated partial breast irradiation developed to replace other longer courses of radiotherapy with a single radiation session administered at the time of breast-conserving surgery. The purpose of this review is to summarize the advantages and disadvantages of breast IORT techniques that are currently available, as well to consider potential alternative techniques for breast IORT or ultra-short course breast radiotherapy. Furthermore, we highlight the published outcomes for the IORT treatment approaches including: electron therapy, superficial photon therapy and other techniques. Potential future directions of IORT are explored including novel IORT techniques utilizing intraoperative brachytherapy with in-room imaging and rapid treatment planning.
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Affiliation(s)
- Daniel M Trifiletti
- Department of Radiation Oncology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Ryan Jones
- Department of Radiation Oncology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Shayna L Showalter
- Division of Surgical Oncology, Department of Surgery, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Bruce B Libby
- Department of Radiation Oncology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - David R Brenin
- Division of Surgical Oncology, Department of Surgery, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Anneke Schroen
- Division of Surgical Oncology, Department of Surgery, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Monica M Morris
- Department of Radiation Oncology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Kelli A Reardon
- Department of Radiation Oncology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Timothy N Showalter
- Department of Radiation Oncology, University of Virginia School of Medicine, Charlottesville, VA, USA
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Ren Y, Zhao Q, Liu H, Huang Y, Wang Z, Cao X, Teh BS, Wen B. 3D-image-guided HDR-brachytherapy versus 2D HDR - brachytherapy after external beam radiotherapy for early T-stage nasopharyngeal carcinoma. BMC Cancer 2014; 14:894. [PMID: 25432818 PMCID: PMC4289213 DOI: 10.1186/1471-2407-14-894] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 11/17/2014] [Indexed: 11/13/2022] Open
Abstract
Background Two-dimensional high-dose-rate brachytherapy (2D-HDR-BT) is an effective method of dose escalation for local tumor control in early T-stage nasopharyngeal carcinoma (NPC). Treatment outcomes for 3D-image-guided high-dose-rate brachytherapy (3D-image-guided-HDR-BT) after external beam radiotherapy (ERT) have not been examined in early T-stage NPC patients. The current study was designed to evaluate whether addition of 3D-HDR-BT to ERT showed further improvement in treatment outcomes in patients with early T-stage NPC when compared to 2D-HDR-BT after ERT. Methods The current study retrospectively analyzed and compared treatment outcomes for patients with nonmetastatic stage T1-2b NPC treated with 2D-HDR-BT (n =101) or 3D-HDR-BT (n =118) after ERT. Patients in both groups were treated with ERT at a mean dose of 60 Gy and a brachytherapy dose of 12Gy (8 ~ 20Gy), 2.5 ~ 5Gy per fraction under local anesthesia. Results Compared to patients treated with 2D-HDR-BT after ERT, patients treated with 3D-HDR-BT after ERT showed improvement in five-year actuarial local control survival rates (p = 0.024), local/regional relapse-free survival rates (p = 0.038), and disease-free survival rates (p = 0.021). Multivariate analysis showed that NPC patients treated with 3D-HDR-BT had improved local control survival (p = 0.042). The incidence rates of acute or chronic complications were similar between two groups. Conclusions The current study showed that 3D-image-guided HDR-BT after ERT was an effective treatment modality for patients with stage T1-2 NPC with acceptable complications. The improvement in local tumor control and disease free survival is likely due to improved conformal dose distributions.
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Affiliation(s)
| | | | | | | | | | - XinPing Cao
- Department of Radiation Oncology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, P,R,China.
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Klein EE, Dogan N, Chen Z, Fiorino C. Oncology scan--the vision of medical physics. Int J Radiat Oncol Biol Phys 2014; 88:251-3. [PMID: 24411972 DOI: 10.1016/j.ijrobp.2013.08.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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