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https://www.readbyqxmd.com/read/28721899/gaps-in-radiation-therapy-awareness-results-from-an-educational-multi-institutional-survey-of-us-internal-medicine-residents
#1
Narek Shaverdian, Sun Mi Yoo, Ryan Cook, Eric M Chang, Naomi Jiang, Ye Yuan, Kiri Sandler, Michael Steinberg, Percy Lee
PURPOSE: Internists and primary care providers play a growing role in cancer care. We therefore evaluated the awareness of radiation therapy in general and specifically the clinical utility of stereotactic body radiation therapy (SBRT) for early-stage non-small cell lung cancer (NSCLC) among current US internal medicine residents. METHODS AND MATERIALS: A web-based institutional review board-approved multi-institutional survey was distributed to US internal medicine residency programs...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28711478/dosimetric-comparison-of-peripheral-nsclc-sbrt-using-acuros-xb-and-aaa-calculation-algorithms
#2
Chloe C H Ong, Khong Wei Ang, Roger C X Soh, Kah Ming Tin, Jerome H H Yap, James C L Lee, Christopher M Bragg
There is a concern for dose calculation in highly heterogenous environments such as the thorax region. This study compares the quality of treatment plans of peripheral non-small cell lung cancer (NSCLC) stereotactic body radiation therapy (SBRT) using 2 calculation algorithms, namely, Eclipse Anisotropic Analytical Algorithm (AAA) and Acuros External Beam (AXB), for 3-dimensional conformal radiation therapy (3DCRT) and volumetric-modulated arc therapy (VMAT). Four-dimensional computed tomography (4DCT) data from 20 anonymized patients were studied using Varian Eclipse planning system, AXB, and AAA version 10...
July 12, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28707533/role-of-extracranial-stereotactic-body-radiation-therapy-in-the-management-of-stage-iv-melanoma
#3
Davide Franceschini, Ciro Franzese, Fiorenza De Rose, Pierina Navarria, Giuseppe R D'Agostino, Tiziana Comito, Angelo Tozzi, Maria C Tronconi, Lorenza Di Guardo, Michele Del Vecchio, Marta Scorsetti
OBJECTIVES: To investigate the role of extracranial stereotactic body radiation therapy (SBRT) in the management of oligometastatic melanoma. METHODS: Patients affected by stage IV melanoma, with less than three extracranial metastatic lesions, who received SBRT were included in this analysis. Acute and late toxicity, local control (LC), overall survival (OS) and progression free survival (PFS) were analyzed. RESULTS: Thirty one patients were included in the study...
July 14, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28694595/minimally-invasive-separation-surgery-plus-adjuvsant-stereotactic-radiotherapy-in-the-management-of-spinal-epidural-metastases
#4
Mazda K Turel, Mena G Kerolus, John E O'Toole
AIM: This study aimed to describe the application of minimally invasive surgery (MIS) in separation surgery combined with postoperative stereotactic body radiation therapy (SBRT) in patients with symptomatic metastatic epidural spinal disease. METHODS: Three techniques are described: (1) MIS posterior separation surgery alone, (2) MIS posterolateral separation surgery with percutaneous pedicle screw placement, and (3) MIS lateral corpectomy with percutaneous pedicle screw placement...
April 2017: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/28687397/estro-acrop-consensus-guideline-on-implementation-and-practice-of-stereotactic-body-radiotherapy-for-peripherally-located-early-stage-non-small-cell-lung-cancer
#5
Matthias Guckenberger, Nicolaus Andratschke, Karin Dieckmann, Mischa S Hoogeman, Morten Hoyer, Coen Hurkmans, Stephanie Lang, Eric Lartigau, Alejandra Méndez Romero, Suresh Senan, Dirk Verellen
BACKGROUND: Stereotactic body radiotherapy (SBRT) has become the standard of care for medically inoperable patients with peripherally located, early stage non-small cell lung cancer (NSCLC), and for those refusing surgical resection. Despite the availability of national and international guidelines, there exists substantial variability in many aspects of SBRT practice. METHODS: The ESTRO ACROP guideline is based on a questionnaire covering all aspects of SBRT implementation and practice (n=114 items)...
July 4, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28661100/estimation-of-lung-tumor-position-from-multiple-anatomical-features-on-4d-ct-using-multiple-regression-analysis
#6
Tomohiro Ono, Mitsuhiro Nakamura, Yoshinori Hirose, Kenji Kitsuda, Yuka Ono, Takashi Ishigaki, Masahiro Hiraoka
To estimate the lung tumor position from multiple anatomical features on four-dimensional computed tomography (4D-CT) data sets using single regression analysis (SRA) and multiple regression analysis (MRA) approach and evaluate an impact of the approach on internal target volume (ITV) for stereotactic body radiotherapy (SBRT) of the lung. Eleven consecutive lung cancer patients (12 cases) underwent 4D-CT scanning. The three-dimensional (3D) lung tumor motion exceeded 5 mm. The 3D tumor position and anatomical features, including lung volume, diaphragm, abdominal wall, and chest wall positions, were measured on 4D-CT images...
June 29, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28657157/cyberknife-with-integrated-ct-on-rails-system-description-and-first-clinical-application-for-pancreas-sbrt
#7
Chrysi Papalazarou, Gijsbert J Klop, Maaike T W Milder, Johannes P A Marijnissen, Vikas Gupta, Ben J M Heijmen, Joost J M E Nuyttens, Mischa S Hoogeman
PURPOSE: This paper reports on the integration of a sliding-gantry CT-on-rails with a robotic linear accelerator. METHODS: The system consists of a SOMATOM Definition AS CT scanner (Siemens Healthcare, Forchheim, Germany) and a CyberKnife M6 FIM (Accuray, Inc., Sunnyvale, CA, USA). Additional movement programs were implemented in the robotic treatment table (RoboCouch, Accuray Inc.) to move between CT and treatment position. Acceptance testing was performed on the CT scanner according to AAPM83 guidelines, as well as safety tests for collision avoidance and electromagnetic (EM) compatibility...
June 28, 2017: Medical Physics
https://www.readbyqxmd.com/read/28655592/prognostic-value-of-radiation-pneumonitis-after-stereotactic-body-radiotherapy-effect-of-pulmonary-emphysema-quantitated-using-ct%C3%A2-images
#8
Takaya Yamamoto, Noriyuki Kadoya, Yoshinao Sato, Haruo Matsushita, Rei Umezawa, Masaki Kubozono, Yojiro Ishikawa, Maiko Kozumi, Noriyoshi Takahashi, Yohei Morishita, Yu Katagiri, Kiyokazu Sato, Kengo Ito, Ken Takeda, Keiichi Jingu
BACKGROUND: The aim of this study was to determine the prognostic factors of radiation pneumonitis (RP) after stereotactic body radiotherapy (SBRT). PATIENTS AND METHODS: A total of 50 patients (36 male and 14 female) were treated with SBRT for 42 primary lung cancers and 8 metastatic lung cancers. SBRT was performed with 48 Gy in 4 fractions to the isocenter or with 40 Gy in 4 fractions covering 95% of the planning target volume. Percentage of low attenuation area (%LAA) was defined as percentage of the lung area with attenuation of -860 Hounsfield units (HU) or lower (%LAA-860) or of -960 HU or lower (%LAA-960)...
June 8, 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28652770/stereotactic-body-radiotherapy-or-stereotactic-ablative-radiotherapy-versus-surgery-for-patients-with-t1-3n0m0-non-small-cell-lung-cancer-a-systematic-review-and-meta-analysis
#9
Ming Li, Xiaodong Yang, Yuhan Chen, Xinyu Yang, Xiyu Dai, Fenghao Sun, Li Zhang, Cheng Zhan, Mingxiang Feng, Qun Wang
BACKGROUND: Stereotactic body radiotherapy (SBRT) or stereotactic ablative radiotherapy (SABR) has been reported to be a comparable alternative therapy to surgery for patients with T1-3N0M0 non-small cell lung cancer (NSCLC). However, it has not been clarified whether SBRT/SABR is as effective as surgery. We conducted this study to compare the efficacy of SBRT/SABR and surgery in the treatment of T1-3N0M0 NSCLC. MATERIALS AND METHODS: An electronic and a manual search of the literature was conducted in PubMed, Embase, and the Wiley Online Library in all published data before January 1, 2017...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28647449/igrt-and-motion-management-during-lung-sbrt-delivery
#10
REVIEW
Vincent Caillet, Jeremy T Booth, Paul Keall
Patient motion can cause misalignment of the tumour and toxicities to the healthy lung tissue during lung stereotactic body radiation therapy (SBRT). Any deviations from the reference setup can miss the target and have acute toxic effects on the patient with consequences onto its quality of life and survival outcomes. Correction for motion, either immediately prior to treatment or intra-treatment, can be realized with image-guided radiation therapy (IGRT) and motion management devices. The use of these techniques has demonstrated the feasibility of integrating complex technology with clinical linear accelerator to provide a higher standard of care for the patients and increase their quality of life...
June 21, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28638802/target-migration-from-re-inflation-of-adjacent-atelectasis-during-lung-stereotactic-body-radiotherapy
#11
Bijing Mao, Vivek Verma, Dandan Zheng, Xiaofeng Zhu, Nathan R Bennion, Abhijeet R Bhirud, Maria A Poole, Weining Zhen
Stereotactic body radiotherapy (SBRT) is a widely accepted option for the treatment of medically inoperable early-stage non-small cell lung cancer (NSCLC). Herein, we highlight the importance of interfraction image guidance during SBRT. We describe a case of early-stage NSCLC associated with segmental atelectasis that translocated 15 mm anteroinferiorly due to re-expansion of the adjacent segmental atelectasis following the first fraction. The case exemplifies the importance of cross-sectional image-guided radiotherapy that shows the intended target, as opposed to aligning based on rigid anatomy alone, especially in cases associated with potentially "volatile" anatomic areas...
June 10, 2017: World Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28637480/institutional-analysis-of-stereotactic-body-radiotherapy-sbrt-for-oligometastatic-lymph-node-metastases
#12
Rosanna Yeung, Jeremy Hamm, Mitchell Liu, Devin Schellenberg
BACKGROUND: In limited metastatic burden of disease, stereotactic body radiotherapy (SBRT) has been shown to achieve high local control rates. It has been hypothesized that SBRT may translate to a better quality of life by delaying the need for systemic chemotherapy and possibly increasing survival. There is limited published literature on the efficacy of SBRT in limited nodal metastases. The primary aim is to review institutional outcomes of patients with solitary or oligometastatic lymph nodes treated with SBRT...
June 21, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28626632/synchronous-mucinous-and-non-mucinous-lung-adenocarcinomas-with-different-epidermal-growth-mutational-status
#13
Rita Linhas, David Tente, Margarida Dias, Ana Barroso
In recent years, the spread of more-sensitive diagnostic methods has resulted in an increase of synchronous multiple primary lung cancer diagnosis. Nevertheless, its occurrence is still rare. Distinction between synchronous lesions from second independent primary tumors is a problem when dealing with multiple lung tumors, particularly if the histological type is the same. We present a case report of a 78-year-old female patient referred to our institution due to pneumonia. A subsequent thoracic computed tomography (CT) was performed showing two suspicious lesions, one in the right upper lobe and the other in the right inferior lobe...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28624021/assessment-of-treatment-response-after-lung-stereotactic-body-radiotherapy-using-diffusion-weighted-magnetic-resonance-imaging-and-positron-emission-tomography-a-pilot-study
#14
Takashi Shintani, Yukinori Matsuo, Yusuke Iizuka, Takamasa Mitsuyoshi, Shigeaki Umeoka, Yuji Nakamoto, Takashi Mizowaki, Kaori Togashi, Masahiro Hiraoka
BACKGROUND AND PURPOSE: There is no early predictor of treatment response after lung stereotactic body radiotherapy (SBRT). We conducted this pilot study to evaluate whether serial diffusion weighted magnetic resonance imaging (DW-MRI) or positron emission tomography (PET) could predict response after SBRT. MATERIAL AND METHODS: Early stage non-small cell lung cancer patients who received SBRT were eligible. DW-MRI and PET were undertaken pretreatment and every 3 months after SBRT in the first year...
July 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28623121/radiomics-based-assessment-of-radiation-induced-lung-injury-after-stereotactic-body-radiotherapy
#15
Angel Moran, Megan E Daly, Stephen S F Yip, Tokihiro Yamamoto
BACKGROUND: Over 50% of patients who receive stereotactic body radiotherapy (SBRT) develop radiographic evidence of radiation-induced lung injury. Radiomics is an emerging approach that extracts quantitative features from image data, which may provide greater value and a better understanding of pulmonary toxicity than conventional approaches. We aimed to investigate the potential of computed tomography-based radiomics in characterizing post-SBRT lung injury. METHODS: A total of 48 diagnostic thoracic computed tomography scans (acquired prior to SBRT and at 3, 6, and 9 months post-SBRT) from 14 patients were analyzed...
May 25, 2017: Clinical Lung Cancer
https://www.readbyqxmd.com/read/28620905/stereotactic-body-radiation-therapy-as-an-alternative-to-surgery-in-early-stage-non-small-cell-lung-cancer
#16
REVIEW
Kenneth Rosenzweig
Stereotactic body radiation therapy (SBRT) is a novel radiation technique that allows a high dose of radiation to be delivered to a tumor with relatively low dose to the surrounding normal tissue. SBRT has achieved extraordinary clinical success in patients with inoperable early-stage non-small-cell lung cancer (NSCLC). Local control of approximately 90% at 2 to 5 years has been demonstrated in multiple trials. In comparisons with surgical resection (in patients who are fit candidates for surgery), SBRT has provided similar local control, but was associated with worse survival, probably due to differences in the underlying patient populations...
June 15, 2017: Oncology (Williston Park, NY)
https://www.readbyqxmd.com/read/28612018/treatment-options-in-oligometastatic-disease-stereotactic-body-radiation-therapy-focus-on-colorectal-cancer
#17
REVIEW
Aaron T Wild, Yoshiya Yamada
BACKGROUND: Improvements in systemic therapy for metastatic colorectal cancer (CRC) have markedly extended survival, rendering local control of metastases to critical organs of increasing importance, especially in the oligometastatic setting where the disease may not yet have acquired the ability to widely disseminate. While surgical resection remains the gold standard for oligometastases in many organs, stereotactic body radiation therapy (SBRT) presents a non-invasive alternative for achieving local control...
March 2017: Visceral Medicine
https://www.readbyqxmd.com/read/28610704/variation-of-the-prescription-dose-using-the-analytical-anisotropic-algorithm-in-lung-stereotactic-body-radiation-therapy
#18
Daisuke Kawai, Ryo Takahashi, Tatsuya Kamima, Hiromi Baba, Toshijiro Yamamoto, Yoko Kubo, Satoru Ishibashi, Yoshihiro Higuchi, Kensuke Tani, Norifumi Mizuno, Shunta Jinno, Hidenobu Tachibana
PURPOSE: The aim of the present investigation was to evaluate the dosimetric variation regarding the analytical anisotropic algorithm (AAA) relative to other algorithms in lung stereotactic body radiation therapy (SBRT). We conducted a multi-institutional study involving six institutions using a secondary check program and compared the AAA to the Acuros XB (AXB) in two institutions. METHODS: All lung SBRT plans (128 patients) were generated using the AAA, pencil beam convolution with the Batho (PBC-B) and adaptive convolve (AC)...
June 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28608966/next-generation-sequencing-and-clinical-outcomes-of-patients-with-lung-adenocarcinoma-treated-with-stereotactic-body-radiotherapy
#19
Richard J Cassidy, Xinyan Zhang, Pretesh R Patel, Joseph W Shelton, Chase E Escott, Gabriel L Sica, Michael R Rossi, Charles E Hill, Conor E Steuer, Rathi N Pillai, Suresh S Ramalingam, Taofeek K Owonikoko, Madhusmita Behera, Seth D Force, Felix G Fernandez, Walter J Curran, Kristin A Higgins
BACKGROUND: Genetic aberrations are well characterized in lung adenocarcinomas (LACs) and clinical outcomes have been influenced by targeted therapies in the advanced setting. Stereotactic body radiotherapy (SBRT) is the standard-of-care therapy for patients with nonoperable, early-stage LAC, but to the authors' knowledge, no information is available regarding the impact of genomic changes in these patients. The current study sought to determine the frequency and clinical impact of genetic aberrations in this population...
June 13, 2017: Cancer
https://www.readbyqxmd.com/read/28596092/stereotactic-body-radiation-therapy-for-early-stage-non-small-cell-lung-cancer-executive-summary-of-an-astro-evidence-based-guideline
#20
Gregory M M Videtic, Jessica Donington, Meredith Giuliani, John Heinzerling, Tomer Z Karas, Chris R Kelsey, Brian E Lally, Karen Latzka, Simon S Lo, Drew Moghanaki, Benjamin Movsas, Andreas Rimner, Michael Roach, George Rodrigues, Shervin M Shirvani, Charles B Simone, Robert Timmerman, Megan E Daly
PURPOSE: This guideline presents evidence-based recommendations for stereotactic body radiation therapy (SBRT) in challenging clinical scenarios in early-stage non-small cell lung cancer (NSCLC). METHODS AND MATERIALS: The American Society for Radiation Oncology convened a task force to perform a systematic literature review on 4 key questions addressing: (1) application of SBRT to operable patients; (2) appropriate use of SBRT in tumors that are centrally located, large, multifocal, or unbiopsied; (3) individual tailoring of SBRT in "high-risk" clinical scenarios; and (4) SBRT as salvage therapy after recurrence...
June 5, 2017: Practical Radiation Oncology
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