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Prostate sbrt

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https://www.readbyqxmd.com/read/29671075/stereotactic-body-radiotherapy-for-castration-sensitive-prostate-cancer-bone-oligometastases
#1
Giuseppe Fanetti, Giulia Marvaso, Delia Ciardo, Annaisabel Rese, Rosalinda Ricotti, Elena Rondi, Stefania Comi, Federica Cattani, Dario Zerini, Cristiana Fodor, Ottavio de Cobelli, Roberto Orecchia, Barbara A Jereczek-Fossa
To evaluate outcome in patients treated with stereotactic body radiotherapy (SBRT) on bone oligometastases from castration-sensitive prostate cancer after primary treatment. We retrospectively collected data of patients with less than five lesions at time of SBRT and hormone-naïve disease at the first extra-regional localization, treated between 03/2012 and 11/2016. Prostate-specific antigen (PSA) was measured every 3 months after SBRT. Imaging was performed in case of progression. Survival analysis was performed with Kaplan-Meier (log-rank test) approach...
April 18, 2018: Medical Oncology
https://www.readbyqxmd.com/read/29621134/dosimetric-implications-of-computerised-tomography-only-versus-magnetic-resonance-fusion-contouring-in-stereotactic-body-radiotherapy-for-prostate-cancer
#2
Daniel R Henderson, Alison C Tree, Kevin J Harrington, Nicholas J van As
Background: Magnetic resonance (MR)-fusion contouring is the standard of care in prostate stereotactic body radiotherapy (SBRT) for target volume localisation. However, the planning computerised tomography (CT) scan continues to be used for dose calculation and treatment planning and verification. Discrepancies between the planning MR and CT scans may negate the benefits of MR-fusion contouring and it adds a significant resource burden. We aimed to determine whether CT-only contouring resulted in a dosimetric detriment compared with MR-fusion contouring in prostate SBRT planning...
April 5, 2018: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/29609646/stereotactic-body-radiotherapy-boost-dose-of-18-gy-vs-21-gy-in-combination-with-androgen-deprivation-therapy-and-whole-pelvic-radiotherapy-for-intermediate-or-high-risk-prostate-cancer-a-study-protocol-for-a-randomized-controlled-pilot-trial
#3
Yeon Joo Kim, Hanjong Ahn, Choung-Soo Kim, Jae-Lyun Lee, Young Seok Kim
BACKGROUND: Combination therapy using external-beam radiotherapy (EBRT) with a brachytherapy boost has demonstrated superior biochemical control than dose-escalated EBRT alone. Whereas brachytherapy is disadvantageous because it is an invasive procedure, stereotactic body-radiotherapy (SBRT) using CyberKnife could emulate the dose distribution of brachytherapy and is a non-invasive and safe modality to control intra-fractional movement. We therefore adopted SBRT using CyberKnife as a boost therapy after whole-pelvic radiotherapy (WPRT)...
April 2, 2018: Trials
https://www.readbyqxmd.com/read/29607633/analysis-of-motion-dependent-clinical-outcome-of-tumor-tracking-stereotactic-body-radiotherapy-for-prostate-cancer
#4
Hoon Sik Choi, Ki Mun Kang, Bae Kwon Jeong, Jin Ho Song, Yun Hee Lee, In Bong Ha, Sung Chul Kam, Jeong Seok Hwa, Jae Seog Hyun, Jungmo Do, Dong Hyeok Jeong, Hojin Jeong
BACKGROUND: To analyze clinical outcome of CyberKnife (CK) tumor-tracking stereotactic body radiotherapy (SBRT) for prostate cancer (Pca) according to the magnitude of intra-fractional prostate motion. METHODS: Medical records and daily treatment logs for 71 patients who received CK tumor-tracking SBRT were retrospectively analyzed. Statistical relationships between prostate motion and various outcome results, including local recurrence (LR), biochemical failure (BF), and treatment-related toxicity, were investigated in order to evaluate motion-dependent efficacy of tumor-tracking SBRT for Pca...
April 2, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29571936/early-results-of-extreme-hypofractionation-using-stereotactic-body-radiation-therapy-for-high-risk-very-high-risk-and-node-positive-prostate-cancer
#5
V Murthy, M Gupta, G Mulye, S Maulik, M Munshi, R Krishnatry, R Phurailatpam, R Mhatre, G Prakash, G Bakshi
AIMS: Stereotactic body radiotherapy (SBRT) in low- and intermediate-risk prostate cancer has shown encouraging results. However, its use in high-risk patients is limited due to lack of data regarding adequate radiotherapy dose, need for pelvic nodal treatment and androgen deprivation therapy. Herein we report our experience of SBRT in this subgroup. MATERIALS AND METHODS: Analysis of a prospectively maintained database of 68 consecutive patients of the National Comprehensive Cancer Network (NCCN) high-risk, very high-risk and node-positive adenocarcinoma prostate treated with SBRT was undertaken...
March 20, 2018: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/29561693/comparative-toxicities-and-cost-of-intensity-modulated-radiotherapy-proton-radiation-and-stereotactic-body-radiotherapy-among-younger-men-with-prostate-cancer
#6
Hubert Y Pan, Jing Jiang, Karen E Hoffman, Chad Tang, Seungtaek L Choi, Quynh-Nhu Nguyen, Steven J Frank, Mitchell S Anscher, Ya-Chen Tina Shih, Benjamin D Smith
Purpose To compare the toxicities and cost of proton radiation and stereotactic body radiotherapy (SBRT) with intensity-modulated radiotherapy (IMRT) for prostate cancer among men younger than 65 years of age with private insurance. Methods Using the MarketScan Commercial Claims and Encounters database, we identified men who received radiation for prostate cancer between 2008 and 2015. Patients undergoing proton therapy and SBRT were propensity score-matched to IMRT patients on the basis of clinical and sociodemographic factors...
March 21, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29559285/prognostic-value-of-18-f-fluoromethylcholine-positron-emission-tomography-computed-tomography-before-stereotactic-body-radiation-therapy-for-oligometastatic-prostate-cancer
#7
Matthijs Cysouw, Esther Bouman-Wammes, Otto Hoekstra, Alfons van den Eertwegh, Maartje Piet, Jeroen van Moorselaar, Ronald Boellaard, Max Dahele, Daniela Oprea-Lager
PURPOSE: To investigate the predictive value of [18 F]-fluoromethylcholine positron emission tomography/computed tomography (PET/CT)-derived parameters on progression-free survival (PFS) in oligometastatic prostate cancer patients treated with stereotactic body radiation therapy (SBRT). METHODS AND MATERIALS: In [18 F]-fluoromethylcholine PET/CT scans of 40 consecutive patients with ≤4 metachronous metastases treated with SBRT we retrospectively measured the number of metastases, standardized uptake values (SUVmean , SUVmax , SUVpeak ), metabolically active tumor volume (MATV), and total lesion choline uptake...
February 13, 2018: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29551231/once-weekly-versus-every-other-day-stereotactic-body-radiotherapy-in-patients-with-prostate-cancer-patriot-a-phase-2-randomized-trial
#8
Harvey C Quon, Aldrich Ong, Patrick Cheung, William Chu, Hans T Chung, Danny Vesprini, Amit Chowdhury, Dilip Panjwani, Geordi Pang, Renee Korol, Melanie Davidson, Ananth Ravi, Boyd McCurdy, Liying Zhang, Alexandre Mamedov, Andrea Deabreu, Andrew Loblaw
BACKGROUND AND PURPOSE: Prostate stereotactic body radiotherapy (SBRT) regimens differ in time, dose, and fractionation. We completed a multicentre, randomized phase II study to investigate the impact of overall treatment time on quality of life (QOL). MATERIAL AND METHODS: Men with low and intermediate-risk prostate cancer were randomly assigned to 40 Gy in 5 fractions delivered once per week (QW) vs. every other day (EOD). QOL was assessed using the Expanded Prostate Cancer Index Composite...
March 15, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29491045/stereotactic-body-radiation-therapy-for-patients-with-early-stage-prostate-cancer
#9
REVIEW
Hannah Linney, Sarah Barrett
AIM: Stereotactic body radiation therapy (SBRT) is emerging as a new treatment option for early-stage prostate cancer, theoretically providing clinical and economic benefits compared to conventionally fractionated external-beam radiation therapy (CF-EBRT). This review aimed to evaluate available published data to determine if the proposed theoretical benefits translate clinically. MATERIALS AND METHODS: A systematic search strategy was employed across three databases using predefined search terms, inclusion and exclusion criteria to identify relevant articles...
March 2018: Anticancer Research
https://www.readbyqxmd.com/read/29474748/changes-in-prostate-orientation-due-to-removal-of-a-foley-catheter
#10
Dale W Litzenberg, Daniel G Muenz, Paul G Archer, William C Jackson, Daniel A Hamstra, Jason W Hearn, Matthew J Schipper, Daniel E Spratt
PURPOSE: Investigate the impact on prostate orientation caused by use and removal of a Foley catheter, and the dosimetric impact on men prospectively treated with prostate stereotactic body radiotherapy (SBRT). METHODS: Twenty-two men underwent a CT simulation with a Foley in place (FCT), followed immediately by a second treatment planning simulation without the Foley (TPCT). The change in prostate orientation was determined by rigid registration of three implanted transponders between FCT and TPCT and compared to measured orientation changes during treatment...
February 23, 2018: Medical Physics
https://www.readbyqxmd.com/read/29450961/volumetric-based-image-guidance-is-superior-to-marker-based-alignments-for-stereotactic-body-radiotherapy-of-prostate-cancer
#11
Wen Li, Lan Lu, Kevin L Stephans, Naveen Sharma, Andrew Vassil, Zhilei Liu Shen, Abigail Stockham, Toufik Djemil, Rahul D Tendulkar, Ping Xia
PURPOSES: The aim of this study was to evaluate a dual marker-based and soft-tissue based image guidance for inter-fractional corrections in stereotactic body radiotherapy (SBRT) of prostate cancer. METHODS/MATERIALS: We reviewed 18 patients treated with SBRT for prostate cancer. An endorectal balloon was inserted at simulation and each treatment. Planning margins were 3 mm/0 mm posteriorly. Prior to each treatment, a dual image guidance protocol was applied to align three makers using stereoscopic x ray images and then to the soft tissue using kilo-voltage cone beam CT (kV-CBCT)...
February 15, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29436852/comparing-photon-and-proton-based-hypofractioned-sbrt-for-prostate-cancer-accounting-for-robustness-and-realistic-treatment-deliverability
#12
Lee Goddard, Nils P Brodin, William R Bodner, Madhur Garg, Wolfgang A Tomé
OBJECTIVE: To investigate whether photon or proton based SBRT is the preferred modality for high dose hypofractionation prostate cancer treatment. Achievable dose distributions were compared when uncertainties in target positioning and range uncertainties were appropriately accounted for. METHODS: Ten patients with prostate cancer previously treated at our institution with photon SBRT using volumetric modulated arc therapy (VMAT) were identified. MRI images fused to the treatment planning CT allowed for accurate target and organ-at-risk (OAR) delineation...
February 13, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29395462/a-feasibility-study-of-independent-verification-of-dose-calculation-for-vero4drt-using-a-clarkson-based-algorithm
#13
Mikiko Yamashita, Ryo Takahashi, Masaki Kokubo, Kenji Takayama, Hiroaki Tanabe, Masaki Sueoka, Masao Ishii, Hidenobu Tachibana
Dose verification for a gimbal-mounted image-guided radiotherapy system, Vero4DRT (Mitsubishi Heavy Industries Ltd., Tokyo, Japan) is usually carried out by pretreatment measurement. Independent verification calculations using Monte Carlo methods for Vero4DRT have been published. As the Clarkson method is faster and easier to use than measurement and Monte Carlo methods, we evaluated the accuracy of an independent calculation verification program and its feasibility as a secondary check for Vero4DRT. Computed tomography (CT)-based dose calculation was performed using a modified Clarkson-based algorithm...
January 25, 2018: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/29339046/stereotactic-body-radiation-therapy-sbrt-for-high-risk-prostate-cancer-where-are-we-now
#14
REVIEW
Alejandro Gonzalez-Motta, Mack Roach
PURPOSE: Stereotactic body radiation therapy (SBRT) is increasingly being used for the management of localized prostate cancer. This trend combined with declining use of brachytherapy (BT) has pushed issues and questions regarding the use of SBRT to the forefront. A systematic literature review was conducted to review the current evidence of biochemical disease-free survival (bDFS) and toxicity of SBRT in high-risk (HR) prostate cancer. METHODS AND MATERIALS: A search was carried out on the PubMed and Embase databases...
December 2, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29315174/oligorecurrent-nodal-prostate-cancer-long-term-results-of-an-elective-nodal-irradiation-approach
#15
Sebastien Tran, Sandra Jorcano, Teresa Falco, Giorgio Lamanna, Raymond Miralbell, Thomas Zilli
OBJECTIVES: The objective of this study was to report long-term results of elective nodal radiotherapy (ENRT) in prostate cancer (PCa) patients with oligorecurrent nodal disease after primary treatment. METHODS: Data of 53 oligorecurrent PCa patients (N1 and/or M1a) with ≤5 nodal metastases (n=108) treated with ENRT combined with androgen deprivation therapy (ADT) between 2004 and 2016 were retrospectively reviewed. Median prostate-specific antigen (PSA) and PSA doubling time (DT) were 3...
January 8, 2018: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29304991/a-multi-institutional-phase-2-trial-of-prostate-stereotactic-body-radiation-therapy-sbrt-using-continuous-real-time-evaluation-of-prostate-motion-with-patient-reported-quality-of-life
#16
William C Jackson, Robert T Dess, Dale W Litzenberg, Pin Li, Matthew Schipper, Seth A Rosenthal, Garrick C Chang, Eric M Horwitz, Robert A Price, Jeff M Michalski, Hiram A Gay, John T Wei, Mary Feng, Felix Y Feng, Howard M Sandler, Robert E Wallace, Daniel E Spratt, Daniel A Hamstra
PURPOSE: The use of stereotactic body radiation therapy (SBRT) for prostate cancer has been reported predominantly from single institutional studies, although concerns for broader adoption exist. METHODS AND MATERIALS: From 2011 through 2013, 66 men were accrued to a phase 2 trial at 5 centers. SBRT consisted of 5 fractions of 7.4 Gy to a total dose of 37 Gy using conventional linear accelerators. Electromagnetic transponders were used for motion management. Health-related quality of life (HRQOL) was evaluated via the Expanded Prostate Cancer Index Composite 26 questionnaire...
January 2018: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29231964/travel-distance-and-stereotactic-body-radiotherapy-for-localized-prostate-cancer
#17
Brandon A Mahal, Yu-Wei Chen, Roshan V Sethi, Oscar A Padilla, David D Yang, Janice Chavez, Vinayak Muralidhar, Jim C Hu, Felix Y Feng, Karen E Hoffman, Neil E Martin, Daniel E Spratt, James B Yu, Peter F Orio, Paul L Nguyen
BACKGROUND: Definitive stereotactic body radiotherapy (SBRT) represents an emerging and debated treatment option for patients with prostate cancer, with potential economic savings and reports of short-term efficacy since 2006. The current study sought to define national trends in definitive prostate SBRT use and determine whether patterns vary by travel distance for treatment. METHODS: The National Cancer Data Base identified 181,544 men with localized prostate cancer who were treated with definitive external beam radiotherapy from 2004 through 2012...
March 15, 2018: Cancer
https://www.readbyqxmd.com/read/29191358/-stereotactic-body-radiation-therapy-for-oligometastatic-prostate-cancer
#18
REVIEW
Jean-Emmanuel Bibault
INTRODUCTION: The first line treatment of metastatic prostate cancer is medical or surgical androgen-deprivation. This treatment however has significant side effects that can affect the patients' quality of life. For oligometastatic patients, a new therapeutic approach, focusing on local treatment of metastases, is emerging. METHODS: A systematic review of studies published on Stereotactic Body Radiation Therapy (SBRT) for oligometastatic prostate cancer was performed using results from search request on MEDLINE...
January 2018: Bulletin du Cancer
https://www.readbyqxmd.com/read/29152425/stereotactic-body-radiotherapy-for-low-risk-prostate-cancer-a-ten-year-analysis
#19
Alan Katz
Objective This study represents the first 10 year analysis of the efficacy and toxicity of stereotactic body radiotherapy (SBRT) in the treatment of early low-risk prostate cancer. Materials and methods Two hundred and thirty males were treated with Cyberknife SBRT to a dose of 35 Gray (Gy) or 36.25 Gy in five consecutive days. All patients had a Gleason score of six and a PSA < 10ng/ml. Median follow-up is nine years. The median age was 69.5 years and median prostate specific antigen (PSA) was 5.6ng/ml...
September 9, 2017: Curēus
https://www.readbyqxmd.com/read/29067275/stereotactic-radiotherapy-for-prostate-cancer-a-review-and-future-directions
#20
REVIEW
Yusef A Syed, Ami K Patel-Yadav, Charlotte Rivers, Anurag K Singh
Prostate cancer affects over 200000 men annually in the United States alone. The role of conventionally fractionated external beam radiation therapy (RT) is well established as a treatment option for eligible prostate cancer patients; however, the use of stereotactic body radiotherapy (SBRT) in this setting is less well defined. Within the past decade, there have been a number of studies investigating the feasibility of SBRT as a potential treatment option for prostate cancer patients. SBRT has been well studied in other disease sites, and the shortened treatment course would allow for greater convenience for patients...
October 10, 2017: World Journal of Clinical Oncology
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