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Stereotactic body radiation therapy

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https://www.readbyqxmd.com/read/28224113/intensity-modulated-radiation-therapy-with-stereotactic-body-radiation-therapy-boost-for-unfavorable-prostate-cancer-a-report-on-3-year-toxicity
#1
Ima Paydar, Abigail Pepin, Robyn A Cyr, Joseph King, Thomas M Yung, Elizabeth G Bullock, Siyuan Lei, Andrew Satinsky, K William Harter, Simeng Suy, Anatoly Dritschilo, John H Lynch, Thomas P Kole, Sean P Collins
BACKGROUND: Recent data suggest that intensity-modulated radiation therapy (IMRT) plus brachytherapy boost for unfavorable prostate cancer provides improved biochemical relapse-free survival over IMRT alone. Stereotactic body radiation therapy (SBRT) may be a less invasive alternative to brachytherapy boost. Here, we report the 3-year gastrointestinal (GI) and genitourinary (GU) toxicities of IMRT plus SBRT boost. MATERIALS AND METHODS: Between March 2008 and September 2012, patients with prostate cancer were treated with robotic SBRT (19...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28221860/the-head-start-effect-will-acute-and-delayed-postoperative-mortality-lead-to-improved-survival-with-stereotactic-body-radiation-therapy-for-operable-stage-i-non-small-cell-lung-cancer
#2
Chad G Rusthoven, David A Palma, Suresh Senan, Brian D Kavanagh
No abstract text is available yet for this article.
February 21, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28218412/magnetic-resonance-elastography-for-prediction-of-radiation-induced-liver-disease-after-stereotactic-body-radiation-therapy
#3
Shintaro Ichikawa, Utaroh Motosugi, Mitsuhiko Oguri, Hiroshi Onishi
No abstract text is available yet for this article.
February 20, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28195507/predicting-risk-factors-for-radiation-pneumonitis-after-stereotactic-body-radiation-therapy-for-primary-or-metastatic-lung-tumors
#4
Mitsuru Okubo, Tomohiro Itonaga, Tatsuhiko Saito, Sachika Shiraishi, Ryuji Mikami, Hidetugu Nakayama, Akira Sakurada, Shinji Sugahara, Kiyoshi Koizumi, Koichi Tokuuye
OBJECTIVES: To investigate risk factors for radiation-induced pneumonitis (RP) after hypofractionated stereotactic body radiotherapy (SBRT) in patients with lung tumors. METHODS: From May 2004 to January 2016, 66 patients with 71 primary or metastatic lung tumors were treated with SBRT; these 71 cases were retrospectively analyzed for RP. To explore the risk factors for RP, the following factors were investigated: age, sex, performance status, operability, number of treatments, respiratory gating, pulmonary emphysema, tumor location, and subclinical interstitial lung disease (ILD)...
February 14, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28168936/dosimetric-comparison-of-real-time-mri-guided-tri-cobalt-60-versus-linear-accelerator-based-stereotactic-body-radiation-therapy-lung-cancer-plans
#5
Andrzej P Wojcieszynski, Patrick M Hill, Stephen A Rosenberg, Craig R Hullett, Zacariah E Labby, Bhudatt Paliwal, Mark W Geurts, R Adam Bayliss, John E Bayouth, Paul M Harari, Michael F Bassetti, Andrew M Baschnagel
PURPOSE: Magnetic resonance imaging-guided radiation therapy has entered clinical practice at several major treatment centers. Treatment of early-stage non-small cell lung cancer with stereotactic body radiation therapy is one potential application of this modality, as some form of respiratory motion management is important to address. We hypothesize that magnetic resonance imaging-guided tri-cobalt-60 radiation therapy can be used to generate clinically acceptable stereotactic body radiation therapy treatment plans...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28156666/patterns-of-radiation-therapy-technology-use-in-the-treatment-of-bone-metastases
#6
Robert Anton Olson, Shilo Lefresne, Michael R McKenzie
: 211 Background: In recent years, there has been a transition from two-dimensional radiation therapy (2DRT) planning towards more advanced techniques such as three-dimensional conformal radiation therapy (3D-CRT), volumetric modulated arc therapy (VMAT), and stereotactic body radiation therapy (SBRT). Our study aim was to analyze these trends in the treatment of bone metastases. METHODS: All patients aged 18 and older who had received palliative intent RT for bone metastases between 2009-2014 and referred to any 1 of 6 regional cancer centers in British Columbia, Canada were reviewed...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28152942/communities-of-practice-a-jurisdictional-approach-to-improving-the-quality-of-care-in-radiation-medicine-in-ontario
#7
Michelle Ang, Lindsay Elizabeth Reddeman, Michael Sharpe, Margaret Hart, Carina Simniceanu, Stephen Breen, Joon-Hyung J Kim, Dani Scott, Khaled Zaza, David D'Souza, Michael F Milosevic, Stewart Gaede, Andrea Marshall, Brian P Yaremko, Katharina Sixel, Nicole Harnett, Eric Gutierrez, Padraig Richard Warde
: 122 Background: The Radiation Treatment Program (RTP) at Cancer Care Ontario (CCO) established several Communities of Practice (CoPs), with the goal of improving radiation treatment (RT) quality and safety. The RTP identifies variation in practice and quality improvement (QI) opportunities in the 14 Regional Cancer Centres (RCCs) and facilitates the development of CoPs to share best practices and standardize care. METHODS: Since 2010, the RTP has formed 7 CoPs ( > 185 members in total): 4 intra-disciplinary (Radiation Therapy, Medical Physics, Advanced Practice Radiation Therapy, Radiation Safety) and 3 inter-disciplinary (Head and Neck (HN), Gynecological (GYNE) and Lung Cancer)...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28152619/a-multinational-report-of-technical-factors-on-stereotactic-body-radiotherapy-for-oligometastases
#8
Kristin J Redmond, Simon S Lo, Roi Dagan, Ian Poon, Matthew C Foote, Darby Erler, Young Lee, Frank Lohr, Tithi Biswas, Umberto Ricardi, Arjun Sahgal
AIM: Oligometastatic cancer is being increasingly managed with aggressive local therapy using stereotactic body radiation therapy (SBRT). However, few guidelines exist. We summarize the results of an international survey reviewing technical factors for extracranial SBRT for oligometastatic disease to guide safe management. MATERIALS & METHODS: Seven high-volume centers contributed. Levels of agreement were categorized as strong (6-7 common responses), moderate (4-5), low (2-3) or no agreement...
February 3, 2017: Future Oncology
https://www.readbyqxmd.com/read/28143558/lung-metastases-treated-with-stereotactic-body-radiotherapy-the-rssearch%C3%A2-patient-registry-s-experience
#9
Anthony Ricco, Joanne Davis, William Rate, Jun Yang, David Perry, John Pablo, David D'Ambrosio, Sanjeev Sharma, Srinath Sundararaman, James Kolker, Kimberly M Creach, Rachelle Lanciano
OBJECTIVES: To report overall survival and local control for patients identified in the RSSearch® Patient Registry with metastatic cancer to the lung treated with SBRT. METHODS: Seven hundred two patients were identified with lung metastases in the RSSearch® Registry. Of these patients, 577 patients had SBRT dose and fractionation information available. Patients were excluded if they received prior surgery, radiation, or radiofrequency ablation to the SBRT treated area...
February 1, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28133758/feasibility-of-robotic-stereotactic-body-radiotherapy-of-lung-tumors-with-kilovoltage-x-ray-beams
#10
Susana V Sánchez-Arreola, Héctor M Garnica-Garza
PURPOSE: Robotic Stereotactic body radiation therapy (SBRT) for lung tumors is treatment modality that, for cases of inoperable lung tumors, has shown excellent treatment outcomes. The typical photon energy when delivering this type of treatments is 6MeV. In this work, using Monte Carlo simulation and realistic patient models we evaluate the characteristics of the absorbed dose distributions that result when x-ray beams of peak spectral energy of 220keV are used to irradiate lung tumors assuming a robotic SBRT delivery mode...
January 30, 2017: Medical Physics
https://www.readbyqxmd.com/read/28130055/optimal-dose-and-fraction-number-in-sbrt-of-lung-tumours-a-radiobiological-analysis
#11
Ruggero Ruggieri, Pavel Stavrev, Stefania Naccarato, Nadejda Stavreva, Filippo Alongi, Alan E Nahum
The efficacy of Stereotactic Body Radiation Therapy (SBRT) in early-stage non-small cell lung cancer for severely hypofractionated schedules is clinically proven. Tumour control probability (TCP) modelling might further optimize prescription dose and number of treatment fractions (n). To this end, we will discuss the following controversial questions. Which is the most plausible cell-survival model at doses per fraction (d) as high as 20Gy? Do clinical data support a dose-response relationship with saturation over some threshold-dose? Given the reduced re-oxygenation for severe hypofractionation, is the inclusion of tumour hypoxia in TCP modelling relevant? Can iso-effective schedules be derived by assuming a homogeneous tumour-cell population with α/β≈10Gy, or should distinct cell subpopulations, with different α/β values, be taken into account? Is there scope for patient-specific individualization of n? Despite the difficulty of providing definite answers to the above questions, reasonable suggestions for lung SBRT can be derived from the literature...
January 24, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28129972/on-the-use-of-volumetric-modulated-arc-therapy-for-single-fraction-thoracic-vertebral-metastases-stereotactic-body-radiosurgery
#12
Damodar Pokhrel, Sumit Sood, Christopher McClinton, Xinglei Shen, Rajeev Badkul, Hongyu Jiang, Matthew Mallory, Mellissa Mitchell, Fen Wang, Christopher Lominska
To retrospectively evaluate quality, efficiency, and delivery accuracy of volumetric-modulated arc therapy (VMAT) plans for single-fraction treatment of thoracic vertebral metastases using image-guided stereotactic body radiosurgery (SBRS) after RTOG 0631 dosimetric compliance criteria. After obtaining credentialing for MD Anderson spine phantom irradiation validation, 10 previously treated patients with thoracic vertebral metastases with noncoplanar hybrid arcs using 1 to 2 3D-conformal partial arcs plus 7 to 9 intensity-modulated radiation therapy beams were retrospectively re-optimized with VMAT using 3 full coplanar arcs...
January 24, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28126325/stereotactic-ablative-radiation-therapy-for-lung-oligometastases-predictive-parameters-of-early-response-by-18-fdg-pet-ct
#13
Rosario Mazzola, Alba Fiorentino, Gioacchino Di Paola, Niccolò Giaj Levra, Francesco Ricchetti, Sergio Fersino, Umberto Tebano, Stefano Pasetto, Ruggero Ruggieri, Matteo Salgarello, Filippo Alongi
OBJECTIVES: The objective of this study was to investigate fludeoxyglucose F 18 positron emission tomography/computed tomography ((18)FDG-PET/CT) parameters as predictive of response after stereotactic ablative radiotherapy (SABR) for lung oligometastases. METHODS: The inclusion criteria of the current retrospective study were as follows: (1) lung oligometastases treated by SABR, (2) presence of (18)FDG-PET/CT before and after SABR for at least two subsequent evaluations, (3) Karnofsky performance status higher than 80, and (4) life expectancy longer than 6 months...
March 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28126301/exploring-value-from-the-patient-s-perspective-between-modern-radiation-therapy-modalities-for-localized-prostate-cancer
#14
Narek Shaverdian, Darlene Verruttipong, Pin-Chieh Wang, Amar U Kishan, D Jeffrey Demanes, Susan McCloskey, Patrick Kupelian, Michael L Steinberg, Christopher R King
PURPOSE: Patients' perspectives on their treatment experiences have not been compared between modern radiation modalities for localized prostate cancer. We evaluated treatment regret and patients' perceptions of their treatment experiences to better inform our understanding of a treatment's value. METHODS AND MATERIALS: Patients with localized prostate cancer treated with stereotactic body radiation therapy (SBRT), intensity modulated radiation therapy (IMRT), or high-dose-rate (HDR) brachytherapy between 2008 and 2014 with at least 1 year of follow-up were surveyed...
March 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28123916/stereotactic-body-radiotherapy-for-inoperable-liver-tumors-results-of-a-single-institutional-experience
#15
Hussam Hijazi, Marie-Pierre Campeau, David Roberge, David Donath, Real Lapointe, Franck Vandenbroucke-Menu, Daniel Taussky, Karim Boudam, Gabriel Chan, Alexis Bujold, Guila Delouya
OBJECTIVES: Stereotactic body radiation therapy (SBRT) is an emerging treatment option for liver tumors unsuitable for ablation or surgery. We report our experience with SBRT in the treatment of liver tumors. MATERIALS AND METHODS: Patients with primary or secondary liver cancer were identified in our local SBRT database. Patients were included irrespective of prior liver-directed therapies. The primary endpoint of our review was in-field local control (LC). Secondary endpoints were progression-free survival (PFS), overall survival (OS), and toxicity...
December 20, 2016: Curēus
https://www.readbyqxmd.com/read/28116853/utility-of-68-ga-prostate-specific-membrane-antigen-positron-emission-tomography-in-diagnosis-and-response-assessment-of-recurrent-renal-cell-carcinoma
#16
Shankar Siva, Jason Callahan, David Pryor, Jarad Martin, Nathan Lawrentschuk, Michael S Hofman
INTRODUCTION: Prostate specific membrane antigen (PSMA) positron emission tomography (PET) is an emerging imaging modality in prostate cancer. However, (68) Ga-PSMA-PET may also have diagnostic utility in the setting of renal cell carcinoma (RCC). We investigate the differential role of (18) F-fluorodeoxyglucose (FDG) and PSMA-PET/CT scanning in patients with oligometastatic RCC. In particular, we focus on the utility of PSMA-PET for diagnostic evaluation of isolated or limited metastases planned for local surgery or radiation, as well as the potential utility of PSMA-PET for therapeutic response assessment in patients receiving stereotactic ablative body radiotherapy (SABR)...
January 24, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28116813/efficacy-of-flattening-filter-free-beam-in-stereotactic-body-radiation-therapy-planning-and-treatment-a-systematic-review-with-meta-analysis
#17
REVIEW
Thu M Dang, Mitchell J Peters, Brigid Hickey, Adam Semciw
A linear accelerator with the flattening-filter removed generates a non-uniform dose profile beam. We aimed to analyse and compare plan quality and treatment time between flattened beam (FB) and flattening-filter-free (FFF) beam to assess the efficacy of FFF beam for stereotactic body radiation therapy (SBRT). The search strategy was based around 3 concepts; radiation therapy, flattening-filter-free and treatment delivery. The years searched were restricted from 2010 to date of review (October 2015). All plan quality comparisons were between FFF and FB plans from the same data sets...
January 24, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28110960/dose-effect-analysis-of-radiation-induced-rib-fractures-after-thoracic-sbrt
#18
Barbara Stam, Erik van der Bijl, Heike Peulen, Maddalena M G Rossi, José S A Belderbos, Jan-Jakob Sonke
BACKGROUND AND PURPOSE: To determine a dose-effect relation for radiation induced rib fractures after stereotactic body radiation therapy (SBRT) in early stage non-small cell lung cancer (NSCLC). Automatic rib delineation has enabled the analysis of a large patient group. MATERIAL AND METHODS: Four-hundred and sixty-six patients with stage I/II NSCLC received SBRT with a median of 54Gy in 3 fractions. The optimal EQD2-corrected dose parameter to predict (a)symptomatic fractures was found using Cox regression...
January 19, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28105159/small-bowel-metastasis-from-pancreatic-cancer-in-a-long-term-survival-patient-with-synchronous-advanced-malignant-pleural-mesothelioma-a-case-report-and-literature-review
#19
Morena Fasano, Carminia Maria Della Corte, Giovanni Vicidomini, Valerio Scotti, Pier Francesco Rambaldi, Alfonso Fiorelli, Marina Accardo, Ferdinando De Vita, Mario Santini, Fortunato Ciardiello, Floriana Morgillo
Diffuse malignant pleural mesothelioma (MPM) is an aggressive tumor that originates from the surface of the pleura. Approximately 70% of cases are associated with chronic asbestos exposure. MPM is regarded as an incurable disease, with a median survival of ~2 years following intensive multimodality treatment. Pancreatic cancer is a malignancy also associated with a poor prognosis, with only 2% of patients surviving for 5 years. The majority of patients with pancreatic cancer are diagnosed with an advanced stage of disease and experience a poor response to therapy...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28102954/dosimetric-impact-of-lipiodol-in-stereotactic-body-radiation-therapy-on-liver-after-trans-arterial-chemoembolization
#20
Daisuke Kawahara, Shuichi Ozawa, Akito Saito, Teiji Nishio, Tomoki Kimura, Tatsuhiko Suzuki, Kazunari Hioki, Takeo Nakashima, Yoshimi Ohno, Yuji Murakami, Yasushi Nagata
PURPOSE: Stereotactic body radiation therapy (SBRT) combining trans-arterial chemoembolization (TACE) with Lipiodol is expected to improve local control. This study is aimed to estimate the dose enhancement in Lipiodol's proximity and to evaluate the dose calculation accuracy of the Acuros XB (AXB) algorithm and anisotropic analytical algorithm (AAA) in the Eclipse treatment planning system (TPS) (ver. 11, Varian Medical Systems, Palo Alto, USA), compared with that of the Monte Carlo (MC) calculation (using BEAMnrc/DOSXYZnrc code) for a virtual phantom and a treatment plan for liver SBRT after TACE...
January 2017: Medical Physics
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