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Garcia MA, Turner A, Brachman DG. The role of GammaTile in the treatment of brain tumors: a technical and clinical overview. J Neurooncol 2024; 166:203-212. [PMID: 38261141 PMCID: PMC10834587 DOI: 10.1007/s11060-023-04523-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 11/23/2023] [Indexed: 01/24/2024]
Abstract
Malignant and benign brain tumors with a propensity to recur continue to be a clinical challenge despite decades-long efforts to develop systemic and more advanced local therapies. GammaTile (GT Medical Technologies Inc., Tempe AZ) has emerged as a novel brain brachytherapy device placed during surgery, which starts adjuvant radiotherapy immediately after resection. GammaTile received FDA clearance in 2018 for any recurrent brain tumor and expanded clearance in 2020 to include upfront use in any malignant brain tumor. More than 1,000 patients have been treated with GammaTile to date, and several publications have described technical aspects of the device, workflow, and clinical outcome data. Herein, we review the technical aspects of this brachytherapy treatment, including practical physics principles, discuss the available literature with an emphasis on clinical outcome data in the setting of brain metastases, glioblastoma, and meningioma, and provide an overview of the open and pending clinical trials that are further defining the efficacy and safety of GammaTile.
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Affiliation(s)
| | - Adam Turner
- GT Medical Technologies, Inc., Tempe, AZ, USA
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2
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Smith K, Nakaji P, Thomas T, Pinnaduwage D, Wallstrom G, Choi M, Zabramski J, Chen C, Brachman D. Safety and patterns of survivorship in recurrent GBM following resection and surgically targeted radiation therapy: Results from a prospective trial. Neuro Oncol 2022; 24:S4-S15. [PMID: 36322102 PMCID: PMC9629483 DOI: 10.1093/neuonc/noac133] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Background Treatment of recurrent glioblastoma (GBM) remains problematic with survival after additional therapy typically less than 12 months. We prospectively evaluated whether outcomes might be improved with resection plus permanent implantation of a novel radiation device utilizing the gamma-emitting isotope Cs-131 embedded within bioresorbable collagen tiles. Methods Recurrent histologic GBM were treated in a single-arm trial. Following radiation, the surgical bed was lined with the tiles. Subsequent treatments were at the treating physician’s discretion. Results 28 patients were treated (20 at first recurrence, range 1–3). Median age was 58 years, KPS was 80, female:male ratio was 10:18. Methylguanine methyltransferase (MGMT) was methylated in 11%, unmethylated in 18%, and unknown in 71%. Post implant, 17 patients (61%) received ≥1 course of systemic therapy. For all patients, Kaplan-Meier estimates of median time to local failure were 12.1 months, post-implant survival was 10.7 months for all patients and 15.1 months for patients who received systemic therapy; for all patients, median overall survival from diagnosis was 25.0 months (range 9.1–143.1). Sex, age, and number of prior progressions were not statistically significant. Local control was continuously maintained in 46% of patients. Two deaths within 30 days occurred, one from intracranial hemorrhage and one after persistent coma. Three symptomatic adverse events occurred: one wound infection requiring surgery and two late radiation brain injury, resolved non-surgically. Conclusion This pre-commercial trial demonstrated acceptable safety and favorable post-treatment local control and survival. The device has received FDA clearance for use in newly diagnosed malignant and all recurrent intracranial neoplasms.
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Affiliation(s)
- Kris Smith
- Department of Neurological Surgery, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Peter Nakaji
- Department of Neurological Surgery, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Theresa Thomas
- Radiation Oncology, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Dilini Pinnaduwage
- Radiation Oncology, St. Joseph's Hospital and Medical Center, Phoenix, Arizona, USA
| | - Garrick Wallstrom
- Division of Biostatistics, Statistics and Data Corporation, Tempe, Arizona, USA
| | - Mehee Choi
- Radiation Oncology, GT Medical Technologies, Tempe, Arizona, USA
| | - Joseph Zabramski
- Department of Neurological Surgery, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Clark Chen
- Department of Neurological Surgery, University of Minnesota, Minneapolis, Minnesota, USA
| | - David Brachman
- Department of Radiation Oncology, Barrow Neurological Institute, Phoenix, Arizona, USA.,Radiation Oncology, GT Medical Technologies, Tempe, Arizona, USA
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Roy I, Krishnan S, Kabashin AV, Zavestovskaya IN, Prasad PN. Transforming Nuclear Medicine with Nanoradiopharmaceuticals. ACS NANO 2022; 16:5036-5061. [PMID: 35294165 DOI: 10.1021/acsnano.1c10550] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nuclear medicine is expected to make major advances in cancer diagnosis and therapy; tumor-targeted radiopharmaceuticals preferentially eradicate tumors while causing minimal damage to healthy tissues. The current scope of nuclear medicine can be significantly expanded by integration with nanomedicine, which utilizes nanoparticles for cancer diagnosis and therapy by capitalizing on the increased surface area-to-volume ratio, the passive/active targeting ability and high loading capacity, the greater interaction cross section with biological tissues, the rich surface properties of nanomaterials, the facile decoration of nanomaterials with a plethora of functionalities, and the potential for multiplexing several functionalities within one construct. This review provides a comprehensive discussion of nuclear nanomedicine using tumor-targeted nanoparticles for cancer radiation therapy with either pre-embedded radionuclides or nonradioactive materials which can be extrinsically triggered using various external nuclear particle sources to produce in situ radioactivity. In addition, it describes the prospect of combining nuclear nanomedicine with other modalities to enable synergistically enhanced combination therapies. The review also discusses advances in the fabrication of radionuclides as well as describes laser ablation technologies for producing nanoradiopharmaceuticals, which combine the ease of production with exceptional purity and rapid biodegradability, along with additional imaging or therapeutic functionalities. From a practical standpoint, these attributes of nanoradiopharmaceuticals may provide distinct advantages in diagnostic/therapeutic sensitivity and specificity, imaging resolution, and scalability of turnkey platforms. Coupling image-guided targeted radiation therapy with the possibility of in situ activation of nanomaterials as well as combining with other therapeutic modalities using a multifunctional nanoplatform could herald an era of exciting technological and therapeutic advances to radically transform the landscape of nuclear medicine. The review concludes with a discussion of current challenges and presents the authors' views on future opportunities to stimulate further research in this rewarding field of high societal impact.
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Affiliation(s)
- Indrajit Roy
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Sunil Krishnan
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, Florida 32224, United States
| | - Andrei V Kabashin
- Aix Marseille University, CNRS, LP3, Campus de Luminy - Case 917, 13288 Marseille, France
- MEPhI, Institute of Engineering Physics for Biomedicine (PhysBio), 115409 Moscow, Russia
| | - Irina N Zavestovskaya
- MEPhI, Institute of Engineering Physics for Biomedicine (PhysBio), 115409 Moscow, Russia
- Nuclear Physics and Astrophysics Department, LPI of RAS, 119991 Moscow, Russia
| | - Paras N Prasad
- MEPhI, Institute of Engineering Physics for Biomedicine (PhysBio), 115409 Moscow, Russia
- Department of Chemistry and Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
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4
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Pinnaduwage DS, Srivastava SP, Yan X, Jani S, Brachman DG, Sorensen SP. Dosimetric Impacts of Source Migration, Radioisotope Type, and Decay with Permanent Implantable Collagen Tile Brachytherapy for Brain Tumors. Technol Cancer Res Treat 2022; 21:15330338221106852. [PMID: 35712977 PMCID: PMC9210077 DOI: 10.1177/15330338221106852] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/13/2022] [Accepted: 05/25/2022] [Indexed: 11/16/2022] Open
Abstract
Introduction: Brachytherapy using permanently implantable collagen tiles containing cesium-131 (Cs-131) is indicated for treatment of malignant intracranial neoplasms. We quantified Cs-131 source migration and modeled the resulting dosimetric impact for Cs-131, iodine-125 (I-125), and palladium-103 (Pd-103). Methods and Materials: This was a retrospective analysis of a subgroup of patients enrolled in a prospective, single-center, nonrandomized, clinical trial (NCT03088579) of Cs-131 collagen tile brachytherapy. Postimplant Cs-131 plans and hypothetical I-125 and Pd-103 calculations were compared for 20 glioblastoma patients for a set seed geometry. Dosimetric impact of decay and seed migration was calculated for 2 hypothetical scenarios: Scenario 1, assuming seed positions on a given image set were unchanged until acquisition of the subsequent set; Scenario 2, assuming any change in seed positions occurred the day following acquisition of the prior images. Seed migration over time was quantified for a subset of 7 patients who underwent subsequent image-guided radiotherapy. Results: Mean seed migration was 1.7 mm (range: 0.7-3.1); maximum seed migration was 4.3 mm. Mean dose to the 60 Gy volume differed by 0.4 Gy (0.6%, range 0.1-1.0) and 0.9 Gy (1.5%, range 0.2-1.7) for Cs-131, 1.2 Gy (2.0%, range 0.1-2.1) and 1.6 Gy (2.6%, range 1.2-2.6) for I-125, and 0.8 Gy (1.3%, range 0.2-1.5) and 1.4 Gy (2.3%, range 0.3-1.9) for Pd-103, for Scenarios 1 and 2, respectively, compared with the postimplant plan. For a set seed geometry mean implant dose was higher for Pd-103 (1.3 times) and I-125 (1.1 times) versus Cs-131. Dose fall-off was steepest for Pd-103: gradient index 1.88 versus 2.23 (I-125) and 2.40 (Cs-131). Conclusions: Dose differences due to source migration were relatively small, suggesting robust prevention of seed migration from Cs-131-containing collagen tiles. Intratarget heterogeneity was greater with Pd-103 and I-125 than Cs-131. Dose fall-off was fastest with Pd-103 followed by I-125 and then Cs-131.
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Affiliation(s)
- Dilini S. Pinnaduwage
- Department of Radiation Oncology, St. Joseph’s Hospital and Medical Center, Phoenix, AZ, USA
| | - Shiv P. Srivastava
- Department of Radiation Oncology, St. Joseph’s Hospital and Medical Center, Phoenix, AZ, USA
| | - Xiangsheng Yan
- Department of Radiation Oncology, St. Joseph’s Hospital and Medical Center, Phoenix, AZ, USA
| | - Shyam Jani
- Department of Radiation Oncology, St. Joseph’s Hospital and Medical Center, Phoenix, AZ, USA
| | - David G. Brachman
- Department of Radiation Oncology, St. Joseph’s Hospital and Medical Center, Phoenix, AZ, USA
- GT Medical Technologies, Tempe, AZ, USA
| | - Stephen P. Sorensen
- Department of Radiation Oncology, St. Joseph’s Hospital and Medical Center, Phoenix, AZ, USA
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Luginbuhl A, Calder A, Kutler D, Zender C, Wise-Draper T, Patel J, Cheng M, Karivedu V, Zhan T, Parashar B, Gulati S, Yao M, Lavertu P, Takiar V, Tang A, Johnson J, Keane W, Curry J, Cognetti D, Bar-Ad V. Multi-Institutional Study Validates Safety of Intraoperative Cesium-131 Brachytherapy for Treatment of Recurrent Head and Neck Cancer. Front Oncol 2021; 11:786216. [PMID: 34900741 PMCID: PMC8660666 DOI: 10.3389/fonc.2021.786216] [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: 09/29/2021] [Accepted: 11/08/2021] [Indexed: 11/29/2022] Open
Abstract
Introduction Surgery is the primary treatment for resectable, non-metastatic recurrent head and neck squamous cell carcinoma (HNSCC). We explore the safety and oncologic benefit of intraoperative Cesium-131 (Cs-131) brachytherapy combined with salvage local and/or regional surgical resection. Methods and Materials Findings were reported from a single arm multi-institutional prospective phase 1/2 trial involving surgery plus Cs-131 (surgery + Cs-131) treatment. The results of two retrospective cohorts—surgery alone and surgery plus intensity modulated radiation therapy (surgery + ReIMRT)—were also described. Included patients had recurrent HNSCC and radiation history. Safety, tumor re-occurrence, and survival were evaluated. Results Forty-nine patients were enrolled in the surgery + Cs-131 prospective study. Grade 1 to 3 adverse events (AEs) occurred in 18 patients (37%), and grade 4 AEs occurred in 2 patients. Postoperative percutaneous endoscopic gastrostomy (PEG) tubes were needed in 10 surgery + Cs-131 patients (20%), and wound and vascular complications were observed in 12 patients (24%). No cases of osteoradionecrosis were reported in the surgery + Cs-131 cohort. We found a 49% 2-year disease-free survival at the site of treatment with a substantial number of patients (31%) developing metastatic disease, which led to a 31% overall survival at 5 years. Conclusions Among patients with local/regional recurrent HNSCC status-post radiation, surgery + Cs-131 demonstrated acceptable safety with compelling oncologic outcomes, as compared to historic control cohorts. Clinical Trial Registration ClinicalTrials.gov, identifiers NCT02794675 and NCT02467738.
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Affiliation(s)
- Adam Luginbuhl
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, PA, United States
| | - Alyssa Calder
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, PA, United States
| | - David Kutler
- Department of Otolaryngology, Weill Cornell Medical Center, New York, NY, United States
| | - Chad Zender
- Department of Otolaryngology, University of Cincinnati Medical Center, Cincinnati, OH, United States
| | - Trisha Wise-Draper
- Department of Medical Oncology, University of Cincinnati Medical Center, Cincinnati, OH, United States
| | - Jena Patel
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, PA, United States
| | - Michael Cheng
- Department of Otolaryngology, Weill Cornell Medical Center, New York, NY, United States
| | - Vidhya Karivedu
- Department of Medical Oncology, Ohio State University, Columbus, OH, United States
| | - Tingting Zhan
- Division of Biostatistics, Department of Pharmacology and Experimental Therapeutics, Thomas Jefferson University, Philadelphia, PA, United States
| | - Bhupesh Parashar
- Department of Radiation Oncology, Zucker School of Medicine at Hofstra/Northwell, New York, NY, United States
| | - Shuchi Gulati
- Department of Medical Oncology, University of Cincinnati Medical Center, Cincinnati, OH, United States
| | - Min Yao
- Department of Radiation Oncology, University Hospitals Cleveland Medical Center Seidman Cancer Center, Cleveland, OH, United States
| | - Pierre Lavertu
- Department of Radiation Oncology, University Hospitals Cleveland Medical Center Seidman Cancer Center, Cleveland, OH, United States
| | - Vinita Takiar
- Department of Radiation Oncology, University of Cincinnati Medical Center, Cincinnati, OH, United States
| | - Alice Tang
- Department of Otolaryngology, University of Cincinnati Medical Center, Cincinnati, OH, United States
| | - Jennifer Johnson
- Department of Medical Oncology, Thomas Jefferson University, Philadelphia, PA, United States
| | - William Keane
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, PA, United States
| | - Joseph Curry
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, PA, United States
| | - David Cognetti
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, PA, United States
| | - Voichita Bar-Ad
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, PA, United States
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Feng W, Rivard MJ, Carey EM, Hearn RA, Pai S, Nath R, Kim Y, Thomason CL, Boyce DE, Zhang H. Recommendations for intraoperative mesh brachytherapy: Report of AAPM Task Group No. 222. Med Phys 2021; 48:e969-e990. [PMID: 34431524 DOI: 10.1002/mp.15191] [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: 12/20/2020] [Revised: 08/17/2021] [Accepted: 08/17/2021] [Indexed: 11/11/2022] Open
Abstract
Mesh brachytherapy is a special type of a permanent brachytherapy implant: it uses low-energy radioactive seeds in an absorbable mesh that is sutured onto the tumor bed immediately after a surgical resection. This treatment offers low additional risk to the patient as the implant procedure is carried out as part of the tumor resection surgery. Mesh brachytherapy utilizes identification of the tumor bed through direct visual evaluation during surgery or medical imaging following surgery through radiographic imaging of radio-opaque markers within the sources located on the tumor bed. Thus, mesh brachytherapy is customizable for individual patients. Mesh brachytherapy is an intraoperative procedure involving mesh implantation and potentially real-time treatment planning while the patient is under general anesthesia. The procedure is multidisciplinary and requires the complex coordination of multiple medical specialties. The preimplant dosimetry calculation can be performed days beforehand or expediently in the operating room with the use of lookup tables. In this report, the guidelines of American Association of Physicists in Medicine (AAPM) are presented on the physics aspects of mesh brachytherapy. It describes the selection of radioactive sources, design and preparation of the mesh, preimplant treatment planning using a Task Group (TG) 43-based lookup table, and postimplant dosimetric evaluation using the TG-43 formalism or advanced algorithms. It introduces quality metrics for the mesh implant and presents an example of a risk analysis based on the AAPM TG-100 report. Recommendations include that the preimplant treatment plan be based upon the TG-43 dose calculation formalism with the point source approximation, and the postimplant dosimetric evaluation be performed by using either the TG-43 approach, or preferably the newer model-based algorithms (viz., TG-186 report) if available to account for effects of material heterogeneities. To comply with the written directive and regulations governing the medical use of radionuclides, this report recommends that the prescription and written directive be based upon the implanted source strength, not target-volume dose coverage. The dose delivered by mesh implants can vary and depends upon multiple factors, such as postsurgery recovery and distortions in the implant shape over time. For the sake of consistency necessary for outcome analysis, prescriptions based on the lookup table (with selection of the intended dose, depth, and treatment area) are recommended, but the use of more advanced techniques that can account for real situations, such as material heterogeneities, implant geometric perturbations, and changes in source orientations, is encouraged in the dosimetric evaluation. The clinical workflow, logistics, and precautions are also presented.
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Affiliation(s)
- Wenzheng Feng
- Department of Radiation Oncology, Saint Barnabas Medical Center, Livingston, New Jersey, USA
| | - Mark J Rivard
- Department of Radiation Oncology, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | | | - Robert A Hearn
- Department of Radiation Physics at Theragenics, Theragenics Corp., Buford, Georgia, USA
| | - Sujatha Pai
- Department of Radiation Oncology, Memorial Hermann Texas Medical Center, Houston, Texas, USA
| | - Ravinder Nath
- Department of Therapeutic Radiology, School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Yongbok Kim
- Department of Radiation Oncology, University of Arizona, Tucson, Arizona, USA
| | - Cynthia L Thomason
- Department of Radiation Oncology, Loyola University Medical Center, Maywood, Illinois, USA
| | | | - Hualin Zhang
- Department of Radiation Oncology, Northwestern University Feinberg School of Medicine, Northwestern Memorial Hospital, Chicago, Illinois, USA
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Sagheer SH, Bornstein J, Bar-Ad V, Cheng M, Cummins A, Cognetti DM, Curry J, Yao M, Lavertu P, Kutler DI, Zender C, Luginbuhl AJ. Adjuvant Cesium-131 Brachytherapy for Patients Intolerant of External Beam Radiation Therapy. Laryngoscope 2021; 131:E2449-E2451. [PMID: 33729580 DOI: 10.1002/lary.29406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/23/2020] [Accepted: 01/07/2021] [Indexed: 12/22/2022]
Affiliation(s)
- S Hamad Sagheer
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A
| | - Jonathan Bornstein
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A
| | - Vochita Bar-Ad
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A
| | - Michael Cheng
- Department of Otolaryngology, New York-Presbyterian Weill Cornell Medical Center, New York, New York, U.S.A
| | - Andi Cummins
- Department of Radiation Oncology, Case Western Reserve School of Medicine, Cleveland, Ohio, U.S.A
| | - David M Cognetti
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A
| | - Joseph Curry
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A
| | - Min Yao
- Department of Radiation Oncology, Case Western Reserve School of Medicine, Cleveland, Ohio, U.S.A
| | - Pierre Lavertu
- Department of Radiation Oncology, Case Western Reserve School of Medicine, Cleveland, Ohio, U.S.A
| | - David I Kutler
- Department of Otolaryngology, New York-Presbyterian Weill Cornell Medical Center, New York, New York, U.S.A
| | - Chad Zender
- Department of Otolaryngology, University of Cincinnati, Cincinnati, Ohio, U.S.A
| | - Adam J Luginbuhl
- Department of Otolaryngology, Thomas Jefferson University, Philadelphia, Pennsylvania, U.S.A
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Nakaji P, Smith K, Youssef E, Thomas T, Pinnaduwage D, Rogers L, Wallstrom G, Brachman D. Resection and Surgically Targeted Radiation Therapy for the Treatment of Larger Recurrent or Newly Diagnosed Brain Metastasis: Results From a Prospective Trial. Cureus 2020; 12:e11570. [PMID: 33224684 PMCID: PMC7678759 DOI: 10.7759/cureus.11570] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/19/2020] [Indexed: 11/24/2022] Open
Abstract
Introduction Achieving durable local control (LC) for larger (e.g., >2-3 cm) brain metastasis whether newly diagnosed or recurrent remains problematic. Resection (R) alone is typically insufficient and adding radiation therapy (RT) still results in a 12-month recurrence rate of 20% or more in many series. Hypothesizing that R plus immediate radiation utilizing brachytherapy may improve outcomes for this cohort of patients, we designed and prospectively evaluated a permanently implanted surgically targeted radiation therapy (STaRT) device consisting of cesium-131 (Cs-131) seeds positioned within a collagen carrier (GammaTile, GT Medical Technologies, Tempe, AZ). The device was designed to prevent direct source-to-brain contact and maintain inter-source spacing after closure. Methods This was a subgroup analysis of a cohort of patients with either recurrent or previously untreated brain metastases enrolled in a prospective, multi-histology single-arm trial (ClinicalTrials.gov, NCT#03088579), conducted between February 2013 and February 2018, of resection and tumor bed brachytherapy with Cs-131 containing permanently implanted collagen tiles to deliver 60 Gray (Gy) at .5 cm depth. No additional local therapy was given without progression. Results A total of 16 metastases in 11 patients were treated; 12 tumors were recurrent and four were previously untreated. The median preoperative maximum diameter was 3.2 cm (range: 1.9-5.1 cm). Histology was seven breasts, six lungs, and three sarcomas. The median age was 60 years (range: 41-80 years); the Karnofsky Performance Status (KPS) was 70 (range: 70-90). The cohort consisted of seven females and four males. The mean time for implantation completion was five minutes. The median overall survival (OS) was 9.3 months. At a median radiographic follow-up of 9.5 months' treatment, site progression was found in 1/16 (6%) at 10.9 months, and the median treatment site time-to-progression (TTP) has not been reached [95% confidence interval (CI): >10.9 months]. At 12 months, the Kaplan-Meier (K-M) estimates for LC after R+STaRT for all tumors was 83%; for previously untreated tumors, LC at 12 months was 100% and for recurrent tumors, it was 80%. Two tumor beds (12.5%) experienced radiation brain changes: one had grade two and the other grade three. No surgical adverse events occurred. Conclusion In this single-arm precommercial study, R+STaRT demonstrated excellent safety and LC in this cohort. The device has recently received FDA clearance for use in newly diagnosed and recurrent brain metastasis, and randomized clinical trials vs. standard of care treatments in both settings are scheduled to open in 2020.
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Affiliation(s)
- Peter Nakaji
- Neurological Surgery, Barrow Neurological Institute, Phoenix, USA
- Neurological Surgery, Banner University Medical Center Phoenix/University of Arizona College of Medicine, Phoenix, USA
| | - Kris Smith
- Neurological Surgery, Barrow Neurological Institute, Phoenix, USA
| | - Emad Youssef
- Radiation Oncology, Barrow Neurological Institute, Phoenix, USA
| | - Theresa Thomas
- Radiation Oncology, St. Joseph's Hospital and Medical Center, Phoenix, USA
| | | | - Leland Rogers
- Radiation Oncology, Barrow Neurological Institute, Phoenix, USA
| | | | - David Brachman
- Radiation Oncology, GT Medical Technologies, Tempe, USA
- Radiation Oncology, Barrow Neurological Institute, Phoenix, USA
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9
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Brachman DG, Youssef E, Dardis CJ, Sanai N, Zabramski JM, Smith KA, Little AS, Shetter AG, Thomas T, McBride HL, Sorensen S, Spetzler RF, Nakaji P. Resection and permanent intracranial brachytherapy using modular, biocompatible cesium-131 implants: results in 20 recurrent, previously irradiated meningiomas. J Neurosurg 2019; 131:1819-1828. [PMID: 30579269 DOI: 10.3171/2018.7.jns18656] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 07/16/2018] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Effective treatments for recurrent, previously irradiated intracranial meningiomas are limited, and resection alone is not usually curative. Thus, the authors studied the combination of maximum safe resection and adjuvant radiation using permanent intracranial brachytherapy (R+BT) in patients with recurrent, previously irradiated aggressive meningiomas. METHODS Patients with recurrent, previously irradiated meningiomas were treated between June 2013 and October 2016 in a prospective single-arm trial of R+BT. Cesium-131 (Cs-131) radiation sources were embedded in modular collagen carriers positioned in the operative bed on completion of resection. The Cox proportional hazards model with this treatment as a predictive term was used to model its effect on time to local tumor progression. RESULTS Nineteen patients (median age 64.5 years, range 50-78 years) with 20 recurrent, previously irradiated tumors were treated. The WHO grade at R+BT was I in 4 (20%), II in 14 (70%), and III in 2 (10%) cases. The median number of prior same-site radiation courses and same-site surgeries were 1 (range 1-3) and 2 (range 1-4), respectively; the median preoperative tumor volume was 11.3 cm3 (range 0.9-92.0 cm3). The median radiation dose from BT was 63 Gy (range 54-80 Gy). At a median radiographic follow-up of 15.4 months (range 0.03-47.5 months), local failure (within 1.5 cm of the implant bed) occurred in 2 cases (10%). The median treatment-site time to progression after R+BT has not been reached; that after the most recent prior therapy was 18.3 months (range 3.9-321.9 months; HR 0.17, p = 0.02, log-rank test). The median overall survival after R+BT was 26 months, with 9 patient deaths (47% of patients). Treatment was well tolerated; 2 patients required surgery for complications, and 2 experienced radiation necrosis, which was managed medically. CONCLUSIONS R+BT utilizing Cs-131 sources in modular carriers represents a potentially safe and effective treatment option for recurrent, previously irradiated aggressive meningiomas.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Theresa Thomas
- 4St. Joseph's Hospital and Medical Center, Phoenix, Arizona; and
| | | | - Stephen Sorensen
- 4St. Joseph's Hospital and Medical Center, Phoenix, Arizona; and
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10
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Single institution implementation of permanent 131Cs interstitial brachytherapy for previously irradiated patients with resectable recurrent head and neck carcinoma. J Contemp Brachytherapy 2019; 11:227-234. [PMID: 31435429 PMCID: PMC6701381 DOI: 10.5114/jcb.2019.85778] [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: 12/12/2018] [Accepted: 05/13/2019] [Indexed: 12/29/2022] Open
Abstract
Purpose Permanent interstitial brachytherapy is an appealing treatment modality for patients with locoregional recurrent, resectable head and neck carcinoma (HNC), having previously received radiation. Cesium-131 (131Cs) is a permanent implant brachytherapy isotope, with a low average photon energy of 30 keV and a short half-life of 9.7 days. Exposure to medical staff and family members is low; patient isolation and patient room shielding are not required. This work presents a single institution’s implementation process of utilizing an intraoperative, permanent 131Cs implant for patients with completely resected recurrent HNC. Material and methods Fifteen patients receiving 131Cs permanent seed brachytherapy were included in this analysis. The process of pre-planning, selecting the dose prescription, seed ordering, intraoperative procedures, post-implant planning, and radiation safety protocols are described. Results Tumor volumes were contoured on the available preoperative PET/CT scans and a pre-implant treatment plan was created using uniform source strength and uniform 1 cm seed spacing. Implants were performed intraoperatively, following tumor resection. In five of the fifteen cases, intraoperative findings necessitated a change from the planned number of seeds and recalculation of the pre-implant plan. The average prescription dose was 56.1 ±6.6 Gy (range, 40-60 Gy). The average seed strength used was 2.2 ±0.2 U (3.5 ±0.3 mCi). Patients returned to a recovery room on a standard surgical floor and remained inpatients, without radiation safety restrictions, based on standard surgical recovery protocols. A post-implant treatment plan was generated based on immediate post-operative CT imaging to verify the seed distribution and confirm delivery of the prescription dose. Patients were provided educational information regarding radiation safety recommendations. Conclusions Cesium-131 interstitial brachytherapy is feasible and does not pose major radiation safety concerns; it should be considered as a treatment option for previously irradiated patients with recurrent, resectable HNC.
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Dziawer Ł, Majkowska-Pilip A, Gaweł D, Godlewska M, Pruszyński M, Jastrzębski J, Wąs B, Bilewicz A. Trastuzumab-Modified Gold Nanoparticles Labeled with 211At as a Prospective Tool for Local Treatment of HER2-Positive Breast Cancer. NANOMATERIALS 2019; 9:nano9040632. [PMID: 31003512 PMCID: PMC6523862 DOI: 10.3390/nano9040632] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 12/13/2022]
Abstract
Highly localized radiotherapy with radionuclides is a commonly used treatment modality for patients with unresectable solid tumors. Herein, we propose a novel α-nanobrachytherapy approach for selective therapy of human epidermal growth factor receptor 2 (HER2)-positive breast cancer. This uses local intratumoral injection of 5-nm-diameter gold nanoparticles (AuNPs) labeled with an α-emitter (211At), modified with polyethylene glycol (PEG) chains and attached to HER2-specific monoclonal antibody (trastuzumab). The size, shape, morphology, and zeta potential of the 5 nm synthesized AuNPs were characterized by TEM (Transmission Electron Microscopy) and DLS (Dynamic Light Scattering) techniques. The gold nanoparticle surface was modified by PEG and subsequently used for antibody immobilization. Utilizing the high affinity of gold for heavy halogens, the bioconjugate was labelled with 211At obtained by α irradiation of the bismuth target. The labeling yield of 211At was greater than 99%. 211At bioconjugates were stable in human serum. Additionally, in vitro biological studies indicated that 211At-AuNP-PEG-trastuzumab exhibited higher affinity and cytotoxicity towards the HER2-overexpressing human ovarian SKOV-3 cell line than unmodified nanoparticles. Confocal and dark field microscopy studies revealed that 211At-AuNP-PEG-trastuzumab was effectively internalized and deposited near the nucleus. These findings show promising potential for the 211At-AuNP-PEG-trastuzumab radiobioconjugate as a perspective therapeutic agent in the treatment of unresectable solid cancers expressing HER2 receptors.
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Affiliation(s)
- Łucja Dziawer
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
| | - Agnieszka Majkowska-Pilip
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
| | - Damian Gaweł
- Department of Biochemistry and Molecular Biology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813 Warsaw, Poland.
| | - Marlena Godlewska
- Department of Biochemistry and Molecular Biology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813 Warsaw, Poland.
| | - Marek Pruszyński
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
| | - Jerzy Jastrzębski
- Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, 02-093 Warsaw, Poland.
| | - Bogdan Wąs
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Cracow, Poland.
| | - Aleksander Bilewicz
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
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Savard C, Epps G, Ad VB, Curry J, Evans JJ, Farrell CJ, Nyquist G, Luginbuhl A. Cesium-131 Interstitial Brachytherapy for Recurrent Malignancies of Skull Base. J Neurol Surg Rep 2019; 80:e23-e26. [PMID: 30972273 PMCID: PMC6456353 DOI: 10.1055/s-0039-1687848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/20/2019] [Indexed: 11/03/2022] Open
Abstract
Background
Recurrent malignancy of the skull base poses a treatment challenge due to a lack of treatment options and potential for damage to surrounding structures.
Methods
Case report of two patients with recurrent nasopharyngeal carcinoma (NPC) of skull base previously treated with adjuvant chemoradiotherapy using intensity-modulated radiation therapy (IMRT).
Results
In both cases, the recurrent tumor was treated with endoscopic surgical resection and intraoperative cesium-131 (Cs-131) interstitial brachytherapy (IBT). Total dose delivered to tumor bed was 57 and 60 Gy, respectively. With a half- life of 9 days, the majority of the radiation dose had been delivered within the first 40 days following implant and there have been no treatment-related complications reported.
Conclusion
Intraoperative Cs-131 IBT is a feasible adjuvant treatment option for patients with recurrent malignancies of the skull base. These are the first known cases of Cs-131 IBT used for recurrent NPC.
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Affiliation(s)
- Corey Savard
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
| | - Gregory Epps
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
| | - Voichita Bar Ad
- Department of Radiation Oncology-Head and Neck Cancer, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
| | - Joseph Curry
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
| | - James J Evans
- Department of Neurosurgery-Neuro-Oncologic and Stereotactic Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
| | - Christopher J Farrell
- Department of Neurosurgery-Neuro-Oncologic and Stereotactic Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
| | - Gurston Nyquist
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
| | - Adam Luginbuhl
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, United States
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Hubley E, Trager M, Bar-Ad V, Luginbuhl A, Doyle L. A nomogram to determine required seed air kerma strength in planar 131Cesium permanent seed implant brachytherapy. J Contemp Brachytherapy 2019; 11:91-98. [PMID: 30911315 PMCID: PMC6431101 DOI: 10.5114/jcb.2019.82716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 01/15/2019] [Indexed: 11/29/2022] Open
Abstract
PURPOSE Intraoperatively implanted Cesium-131 (131Cs) permanent seed brachytherapy is used to deliver highly localized re-irradiation in recurrent head and neck cancers. A single planar implant of uniform air kerma strength (AKS) seeds and 10 mm seed-to-seed spacing is used to deliver the prescribed dose to a point 5 mm or 10 mm perpendicular to the center of the implant plane. Nomogram tables to quickly determine the required AKS for rectangular and irregularly shaped implants were created and dosimetrically verified. By eliminating the need for a full treatment planning system plan, nomogram tables allow for fast dose calculation for intraoperative re-planning and for a second check method. MATERIAL AND METHODS TG-43U1 recommended parameters were used to create a point-source model in MATLAB. The dose delivered to the prescription point from a single 1 U seed at each possible location in the implant plane was calculated. Implant tables were verified using an independent seed model in MIM Symphony LDR™. Implant tables were used to retrospectively determine seed AKS for previous cases: three rectangular and three irregular. RESULTS For rectangular implants, the percent difference between required seed AKS calculated using MATLAB and MIM was at most 0.6%. For irregular implants, the percent difference between MATLAB and MIM calculations for individual seed locations was within 1.5% with outliers of less than 3.1% at two distal locations (10.6 cm and 8.8 cm), which have minimal dose contribution to the prescription point. The retrospectively determined AKS for patient implants using nomogram tables agreed with previous calculations within 5% for all six cases. CONCLUSIONS Nomogram tables were created to determine required AKS per seed for planar uniform AKS 131Cs implants. Comparison with the treatment planning system confirms dosimetric accuracy that is acceptable for use as a second check or for dose calculation in cases of intraoperative re-planning.
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Affiliation(s)
- Emily Hubley
- Department of Radiation Oncology, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Michael Trager
- Department of Radiation Oncology, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Voichita Bar-Ad
- Department of Radiation Oncology, Thomas Jefferson University Hospital, Philadelphia, PA, USA
| | - Adam Luginbuhl
- Department of Otolaryngology Head and Neck Surgery, Thomas Jefferson University Hospital, Philadlephia, PA, USA
| | - Laura Doyle
- Department of Radiation Oncology, Thomas Jefferson University Hospital, Philadelphia, PA, USA
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A systematic review of treating recurrent head and neck cancer: a reintroduction of brachytherapy with or without surgery. J Contemp Brachytherapy 2018; 10:454-462. [PMID: 30479623 PMCID: PMC6251444 DOI: 10.5114/jcb.2018.79399] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 10/21/2018] [Indexed: 11/23/2022] Open
Abstract
Purpose To review brachytherapy use in recurrent head and neck carcinoma (RHNC) with focus on its efficacy and complication rates. Material and methods A literature search of PubMed, Ovid, Google Scholar, and Scopus was conducted from 1990 to 2017. Publications describing treatment of RHNC with brachytherapy with or without surgery were included. The focus of this review is on oncologic outcomes and the safety of brachytherapy in the recurrent setting. Results Thirty studies involving RHNC treatment with brachytherapy were reviewed. Brachytherapy as adjunctive treatment to surgical resection appears to be associated with an improved local regional control and overall survival, when compared with the published rates for re-irradiation utilizing external beam radiotherapy (RT) or brachytherapy alone. Safety data remains variable with different isotopes and dose rates with implantable brachytherapy demonstrating a tolerable side effect profile. Conclusions Although surgery remains a mainstay treatment for RHNC, intraoperative interstitial brachytherapy delivery as adjunctive therapy may improve the treatment outcome and may be associated with fewer complication rates as compared to reirradiation using external beam radiotherapy. Further investigations are required to elucidate the role of brachytherapy for RHNC.
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Shah SN, Kogachi K, Correa ZM, Schefler AC, Aronow ME, Callejo SA, Cebulla CM, Day-Ghafoori S, Francis JH, Lally S, McCannel TA, Paton KE, Phan IT, Pointdujour-Lim R, Ramasubramanian A, Rath P, Shields CL, Skalet AH, Wells JR, Jennelle RL, Berry JL. Trends in Radiation Practices for Female Ocular Oncologists in North America: A Collaborative Study of the International Society of Ocular Oncology. Ocul Oncol Pathol 2018; 5:54-59. [PMID: 30675478 DOI: 10.1159/000489219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/11/2018] [Indexed: 12/22/2022] Open
Abstract
Background The aim of this study was to determine the known radiation exposure, attitudes, and consequent risk modifications among female ocular oncologists in North America who routinely administer radioactive plaque brachytherapy treatment and are members of the International Society of Ocular Oncology. Methods Nineteen female ocular oncologists completed an anonymous 17-question radiation exposure survey. Results Eleven of the participants chose to routinely wear lead protection during surgery; 8 did not. Fifteen of 19 participants reported using an unloaded "nonactive" template to prepare for plaque implantation. During pregnancy, 11 of 13 participants continued to perform plaque brachytherapy. Eight of these 11 undertook measures to decrease radiation exposure self-reported as lead wear and other. The average reported anxiety regarding fertility was 2.1 (SD, 2.2) on a scale from 1 to 10. Conclusion This study corroborates prior literature that surgeons' exposure to radiation during plaque brachytherapy is minimal. Nonetheless, there remains some anxiety regarding exposure risk to women, due to potential effects on fertility and fetal health. We found variability in exposure monitoring, required training, and precautions during pregnancy amongst this group of surgeons. Improved education and clearer pregnancy guidelines may equip female ocular oncologists with optimal knowledge regarding risk of radiation exposure.
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Affiliation(s)
- Sona N Shah
- USC Roski Eye Institute, University of Southern California, Los Angeles, California, USA.,Children's Hospital Los Angeles, Los Angeles, California, USA
| | - Kaitlin Kogachi
- USC Roski Eye Institute, University of Southern California, Los Angeles, California, USA.,Children's Hospital Los Angeles, Los Angeles, California, USA
| | | | | | - Mary E Aronow
- Massachusetts Eye and Ear, Retina Service, Harvard Medical School, Boston, Massachusetts, USA
| | | | | | | | - Jasmine H Francis
- Memorial Sloan Kettering Cancer Center, New York City, New York, USA
| | - Sara Lally
- Ocular Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Tara A McCannel
- University of California, Los Angeles, Los Angeles, California, USA
| | | | - Isabella T Phan
- Kaiser Permanente, Northern California, San Francisco, California, USA
| | | | | | - Pamela Rath
- Everett and Hurite Ophthalmic Association, Pittsburgh, Pennsylvania, USA
| | - Carol L Shields
- Ocular Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Alison H Skalet
- Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, USA.,Department of Radiation Oncology, Oregon Health & Science University, Portland, Oregon, USA
| | - Jill R Wells
- Emory Eye Center, Emory University, Atlanta, Georgia, USA
| | - Richard L Jennelle
- Department of Radiation Oncology, University of Southern California, Los Angeles, California, USA
| | - Jesse L Berry
- USC Roski Eye Institute, University of Southern California, Los Angeles, California, USA.,Children's Hospital Los Angeles, Los Angeles, California, USA
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Yondorf MZ, Schwartz TH, Boockvar JA, Pannullo S, Stieg P, Sabbas A, Pavese A, Trichter S, Nedialkova L, Parashar B, Nori D, Chao KSC, Wernicke AG. Radiation Exposure and Safety Precautions Following 131Cs Brachytherapy in Patients with Brain Tumors. HEALTH PHYSICS 2017; 112:403-408. [PMID: 28234701 DOI: 10.1097/hp.0000000000000551] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Cesium-131 (Cs) brachytherapy is a safe and convenient treatment option for patients with resected brain tumors. This study prospectively analyzes radiation exposure in the patient population who were treated with a maximally safe neurosurgical resection and Cs brachytherapy. Following implantation, radiation dose rate measurements were taken at the surface, 35 cm, and 100 cm distances. Using the half-life of Cs (9.69 d), the dose rates were extrapolated at these distances over a period of time (t = 30 d). Data from dosimetry badges and rings worn by surgeons and radiation oncologists were collected and analyzed. Postoperatively, median dose rate was 0.2475 mSv h, 0.01 mSv h, and 0.001 mSv h and at 30 d post-implant, 0.0298 mSv h, 0.0012 mSv h, and 0.0001 mSv h at the surface, 35 cm, and 100 cm, respectively. All but one badge and ring measured a dose equivalent corresponding to ~0 mSv h, while 1 badge measured 0.02/0.02/0.02 mSv h. There was a significant correlation between the number of seeds implanted and dose rate at the surface (p = 0.0169). When stratified by the number of seeds: 4-15 seeds (n = 14) and 20-50 seeds (n = 4) had median dose rates of 0.1475 mSv h and 0.5565 mSv h, respectively (p = 0.0015). Using National Council on Radiation Protection guidelines, this study shows that dose equivalent from permanent Cs brachytherapy for the treatment of brain tumors is limited, and it maintains safe levels of exposure to family and medical personnel. Such information is critical knowledge for the neurosurgeons, radiation oncologists, nurses, hospital staff, and family as this method is gaining nationwide popularity.
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Affiliation(s)
- Menachem Z Yondorf
- *Stich Radiation Oncology, Weill Medical College of Cornell University, New York, NY; †Department of Neurosurgery, Weill Medical College of Cornell University, New York, NY
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Cesium-131 brachytherapy in high risk and recurrent head and neck cancers: first report of long-term outcomes. J Contemp Brachytherapy 2015; 7:445-52. [PMID: 26816501 PMCID: PMC4716131 DOI: 10.5114/jcb.2015.56764] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 11/14/2015] [Indexed: 01/29/2023] Open
Abstract
Purpose The feasibility and efficacy of re-irradiation using contemporary radiation techniques to treat recurrent head and neck cancer has been demonstrated but the role of brachytherapy is unclear. Here we describe the use of 131Cs brachytherapy with concurrent salvage surgery in 18 patients. Material and methods Eligible patients underwent maximal gross resection of the tumor with implantation of brachytherapy seeds delivering a minimum dose of 80 Gy to the tumor bed. Rates of overall survival, locoregional progression free survival, disease-free survival, and radiation-induced toxicity were analyzed. Results Retrospective Kaplan-Meier analysis shows median overall survival was 15 months and disease free survival was 12 months. Two patients developed grade 3 toxicity; all other complications were grade 1-2 with no grade 4 or 5 complications. Conclusions Compared to prior literature, our study shows comparable rates of survival with a decreased rate of radiation-induced toxicity.
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Stewart A, Parashar B, Patel M, O'Farrell D, Biagioli M, Devlin P, Mutyala S. American Brachytherapy Society consensus guidelines for thoracic brachytherapy for lung cancer. Brachytherapy 2015; 15:1-11. [PMID: 26561277 DOI: 10.1016/j.brachy.2015.09.006] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 08/28/2015] [Accepted: 09/02/2015] [Indexed: 10/22/2022]
Abstract
PURPOSE To update brachytherapy recommendations for pretreatment evaluation, treatment, and dosimetric issues for thoracic brachytherapy for lung cancer. METHODS AND MATERIALS Members of the American Brachytherapy Society with expertise in thoracic brachytherapy updated recommendations for thoracic brachytherapy based on literature review and clinical experience. RESULTS The American Brachytherapy Society consensus guidelines recommend the use of endobronchial brachytherapy for disease palliation in patients with central obstructing lesions, particularly in patients who have previously received external beam radiotherapy. The use of interstitial implants after incomplete resection may improve outcomes and provide enhanced palliation. Early reports support the use of CT-guided intratumoral volume implants within clinical studies. The use of brachytherapy routinely after sublobar resection is not generally recommended, unless within the confines of a clinical trial or a registry. CONCLUSIONS American Brachytherapy Society recommendations for thoracic brachytherapy are provided. Practitioners are encouraged to follow these guidelines and to develop further clinical trials to examine this treatment modality to increase the evidence base for its use.
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Affiliation(s)
- A Stewart
- St Luke's Cancer Centre, Royal Surrey County Hospital, Guildford, UK; University of Surrey, Guildford, UK.
| | - B Parashar
- Department of Stich Radiation Oncology, Weill Cornell Medical College, New York, NY
| | - M Patel
- Department of Radiation Oncology, Baylor Scott and White Health, Temple, TX
| | - D O'Farrell
- Dana Faber Cancer Centre, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - M Biagioli
- Florida Hospital Cancer Institute, Department of Radiation Oncology, H.Lee Moffitt Cancer Center, Tampa, FL
| | - P Devlin
- Dana Faber Cancer Centre, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - S Mutyala
- Department of Radiation Medicine, St. Joseph's Hospital and Medical Center, University of Arizona Cancer Center at Dignity Health, Phoenix, AZ
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Wooten CE, Randall M, Edwards J, Aryal P, Luo W, Feddock J. Implementation and early clinical results utilizing Cs-131 permanent interstitial implants for gynecologic malignancies. Gynecol Oncol 2014; 133:268-73. [DOI: 10.1016/j.ygyno.2014.02.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 02/05/2014] [Accepted: 02/11/2014] [Indexed: 10/25/2022]
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Lung-conserving treatment of a pulmonary oligometastasis with a wedge resection and 131Cs brachytherapy. Brachytherapy 2013; 12:567-72. [DOI: 10.1016/j.brachy.2013.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 05/01/2013] [Accepted: 05/17/2013] [Indexed: 11/19/2022]
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Sutherland JGH, Furutani KM, Thomson RM. Monte Carlo calculated doses to treatment volumes and organs at risk for permanent implant lung brachytherapy. Phys Med Biol 2013; 58:7061-80. [PMID: 24051987 DOI: 10.1088/0031-9155/58/20/7061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Iodine-125 ((125)I) and Caesium-131 ((131)Cs) brachytherapy have been used with sublobar resection to treat stage I non-small cell lung cancer and other radionuclides, (169)Yb and (103)Pd, are considered for these treatments. This work investigates the dosimetry of permanent implant lung brachytherapy for a range of source energies and various implant sites in the lung. Monte Carlo calculated doses are calculated in a patient CT-derived computational phantom using the EGsnrc user-code BrachyDose. Calculations are performed for (103)Pd, (125)I, (131)Cs seeds and 50 and 100 keV point sources for 17 implant positions. Doses to treatment volumes, ipsilateral lung, aorta, and heart are determined and compared to those determined using the TG-43 approach. Considerable variation with source energy and differences between model-based and TG-43 doses are found for both treatment volumes and organs. Doses to the heart and aorta generally increase with increasing source energy. TG-43 underestimates the dose to the heart and aorta for all implants except those nearest to these organs where the dose is overestimated. Results suggest that model-based dose calculations are crucial for selecting prescription doses, comparing clinical endpoints, and studying radiobiological effects for permanent implant lung brachytherapy.
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Affiliation(s)
- J G H Sutherland
- Carleton Laboratory for Radiotherapy Physics, Department of Physics, Carleton University, Ottawa, Ontario, Canada
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Sutherland JGH, Furutani KM, Thomson RM. A Monte Carlo investigation of lung brachytherapy treatment planning. Phys Med Biol 2013; 58:4763-80. [DOI: 10.1088/0031-9155/58/14/4763] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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