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Practical Radiation Oncology

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https://www.readbyqxmd.com/read/28428019/radiation-therapy-for-oropharyngeal-squamous-cell-carcinoma-executive-summary-of-an-astro-evidence-based-clinical-practice-guideline
#1
David J Sher, David J Adelstein, Gopal K Bajaj, David M Brizel, Ezra E W Cohen, Aditya Halthore, Louis B Harrison, Charles Lu, Benjamin J Moeller, Harry Quon, James W Rocco, Erich M Sturgis, Roy B Tishler, Andy Trotti, John Waldron, Avraham Eisbruch
PURPOSE: To present evidence-based guidelines for the treatment of oropharyngeal squamous cell carcinoma (OPSCC) with definitive or adjuvant radiation therapy (RT). METHODS AND MATERIALS: The American Society for Radiation Oncology convened the OPSCC Guideline Panel to perform a systematic literature review investigating the following key questions: (1) When is it appropriate to add systemic therapy to definitive RT in the treatment of OPSCC? (2) When is it appropriate to deliver postoperative RT with and without systemic therapy following primary surgery for OPSCC? (3) When is it appropriate to use induction chemotherapy in the treatment of OPSCC? (4) What are the appropriate dose, fractionation, and volume regimens with and without systemic therapy in the treatment of OPSCC? RESULTS: Patients with stage IV and stage T3 N0-1 OPSCC treated with definitive RT should receive concurrent high-dose intermittent cisplatin...
April 11, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28428017/outcomes-and-toxicity-following-high-dose-radiation-therapy-in-15-fractions-for-non-small-cell-lung-cancer
#2
Penny Fang, Cameron W Swanick, Todd A Pezzi, Zhongxing Liao, James Welsh, Steven H Lin, Daniel R Gomez
PURPOSE: Accelerated hypofractionated radiation therapy (AHRT) is increasingly used for select lung cancer patients. We evaluated clinical outcomes and predictors of pulmonary/esophageal toxicity in patients treated with ≥52.5 Gy in 15 fractions. METHODS AND MATERIALS: We evaluated 229 patients treated with radiation therapy doses ≥52.5 Gy in 15 fractions for non-small cell lung cancer from January 2009 through January 2016. Toxicity was scored using Common Terminology Criteria for Adverse Events, v4...
March 9, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28377141/patterns-of-lymph-node-positivity-on-11-c-acetate-pet-imaging-in-correlation-to-the-rtog-pelvic-radiation-field-for-prostate-cancer
#3
Chris McClinton, Maryam Niroumand, Sumit Sood, Veer Shah, Jacqueline Hill, Reginald W Dusing, Xinglei Shen
PURPOSE: (11)C-acetate positron emission tomography (PET) imaging allows for the detection of occult metastatic disease that may otherwise go undetected with standard imaging for prostate cancer (PCa). The aim of this study was to evaluate lymph node coverage of the standard Radiation Therapy Oncology Group (RTOG) whole pelvic radiation therapy (WPRT) field in patients found to have node-positive PCa determined by (11)C-acetate PET imaging. METHODS AND MATERIALS: A retrospective analysis was conducted on 125 PCa patients who underwent (11)C-acetate PET scans at our institution between 2007 and 2014...
March 6, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28377138/daily-ct-guidance-improves-target-coverage-during-definitive-radiation-therapy-for-gastric-malt-lymphoma
#4
He Wang, Sarah A Milgrom, Bouthaina S Dabaja, Grace L Smith, Mary Martel, Chelsea C Pinnix
PURPOSE: Radiation therapy (RT) for gastric mucosa-associated lymphoid tissue (MALT) lymphoma is challenging because of variation in the stomach's position, size, and shape. We investigated the interfractional changes in stomach location, consequent dosimetric effects, and impact of daily computed tomography image guidance RT (CT-IGRT). METHODS AND MATERIALS: Twelve patients treated for gastric MALT lymphoma with intensity modulated radiation therapy, using a breath-hold technique and restriction of oral intake, were studied retrospectively...
March 6, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28377137/hazards-and-incidents-detection-and-learning-in-radiation-medicine-a-comparison-of-2-educational-interventions
#5
Robert Thompson, Yilan Lu, Marc Potvin, Jordan Holmes, Lisa Di Prospero, Brian Keller, Ewa Szumacher, Brian Liszewski, Pamela Catton, Meredith Giuliani, Bethany Pitcher, Melania Pintilie, Jean-Pierre Bissonnette
PURPOSE: Interprofessional, educational live simulations were compared with group discussion-based exercises in terms of their ability to improve radiation medicine trainees' ability to detect hazards and incidents and understand behaviors that may prevent them. METHODS AND MATERIALS: Trainees and recent graduates of radiation therapy, medical physics, and radiation oncology programs were recruited and randomized to either a simulation-based or group discussion-based training intervention...
February 27, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28356201/the-risk-of-level-ib-nodal-involvement-in-oropharynx-cancer-guidance-for-submandibular-gland-sparing-irradiation
#6
Nicholas C J Lee, Jacqueline R Kelly, Henry S Park, Wendell G Yarbrough, Barbara A Burtness, Zain A Husain
PURPOSE: Xerostomia remains a common side effect of head and neck irradiation. Conflicting data exist regarding the likelihood of level IB involvement for patients with oropharyngeal squamous cell cancer (OPSCC), and data are limited on this risk in patients with human papillomavirus-positive disease. This study examined surgically treated OPSCC to determine the risk of pathologic level IB nodal involvement and to identify a cohort of patients in whom ipsilateral level IB radiation therapy may be safely omitted...
February 16, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28377136/perceptions-and-practices-regarding-women-s-vaginal-health-following-radiation-therapy-a-survey-of-radiation-oncologists-practicing-in-the-united-states
#7
Lisa A Kachnic, Deborah W Bruner, Muhammad M Qureshi, Gregory A Russo
PURPOSE: Vaginal stenosis (VS) is a recognized complication of pelvic and vaginal radiation therapy (RT). METHODS AND MATERIALS: A 26-item survey assessing the signs/symptoms, risk factors, diagnosis, prevention, treatment, and impact of VS on women's sexual health was distributed to radiation oncologists. Descriptive statistics were calculated. Chi-square tests examined differences in categorical responses. RESULTS: A total of 233 (10.5%) participants completed the entire survey...
February 14, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28363492/commentary-on-accelerated-partial-breast-irradiation-consensus-statement-update-of-an-astro-evidence-based-consensus-statement
#8
LETTER
William Small, Tarita O Thomas, Michael Alvarado, Michael Baum, Max Bulsara, Roberto Diaz, Eric Donnelly, Sheldon Feldman, Stephen Grobmyer, Richard Hoefer, David Joseph, Song Kang, Christine Laronga, Andrea McKee, Barry Rosen, Jeffrey Tobias, Valery Uhl, Jayant S Vaidya, Frederik Wenz, Dennis Holmes
No abstract text is available yet for this article.
February 9, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28341320/gallbladder-toxicity-and-high-dose-ablative-intent-radiation-for-liver-tumors-should-we-constrain-the-dose
#9
Shyam K Tanguturi, Andrzej Niemierko, Jennifer Y Wo, Khanhnhat N Nguyen, Hugh Prichard, Andrew X Zhu, John A Wolfgang, Theodore S Hong
PURPOSE: Little is known about the risk of gallbladder toxicity from hypofractionated (HFXRT) and stereotactic body radiation therapy (SBRT). We report on gallbladder toxicity and attribution to treatment in a prospective series of patients with primary and metastatic liver tumors receiving ablative-intent HFXRT and SBRT with protons. METHODS AND MATERIALS: We evaluated 93 patients with intact gallbladders enrolled in either of 2 trials investigating proton HFXRT and SBRT for primary and metastatic liver tumors from 2009 to 2014...
February 9, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28341319/improving-patient-safety-and-workflow-efficiency-with-standardized-pretreatment-radiation-therapist-chart-reviews
#10
Kelly Cooper Younge, Katherine Woch Naheedy, Joel Wilkinson, Joumana Dekmak, Elizabeth Covington, Bonnie Durbin, Eric Nelson, Stephanie Filpansick, Jean M Moran
PURPOSE: Radiation therapists play a critical role in ensuring patient safety; however, they are sometimes given insufficient time to perform quality assurance (QA) of a patient's treatment chart and documentation before the start of treatment. In this work, we show the benefits of introducing a formal therapist prestart QA checklist, completed in a quiet space well in advance of treatment, into our workflow. METHODS AND MATERIALS: A therapist prestart QA checklist was created by analyzing in-house variance reports and treatment unit delays over 6 months...
February 2, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28341317/target-volume-and-artifact-evaluation-of-a-new-data-driven-4d-ct
#11
Rachael Martin, Tinsu Pan
PURPOSE: Four-dimensional computed tomography (4D CT) is often used to define the internal gross target volume (IGTV) for radiation therapy of lung cancer. Traditionally, this technique requires the use of an external motion surrogate; however, a new image, data-driven 4D CT, has become available. This study aims to describe this data-driven 4D CT and compare target contours created with it to those created using standard 4D CT. METHODS AND MATERIALS: Cine CT data of 35 patients undergoing stereotactic body radiation therapy were collected and sorted into phases using standard and data-driven 4D CT...
February 2, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28341318/online-palliative-care-and-oncology-patient-education-resources-through-google-do-they-meet-national-health-literacy-recommendations
#12
Arpan V Prabhu, Tudor Crihalmeanu, David R Hansberry, Nitin Agarwal, Christine Glaser, David A Clump, Dwight E Heron, Sushil Beriwal
PURPOSE: The Google search engine is a resource commonly used by patients to access health-related patient education information. The American Medical Association and National Institutes of Health recommend that patient education resources be written at a level between the third and seventh grade reading levels. We assessed the readability levels of online palliative care patient education resources using 10 readability algorithms widely accepted in the medical literature. METHODS AND MATERIALS: In October 2016, searches were conducted for 10 individual terms pertaining to palliative care and oncology using the Google search engine; the first 10 articles written for the public for each term were downloaded for a total of 100 articles...
January 27, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28274407/comparison-of-2-transabdominal-ultrasound-image-guidance-techniques-for-prostate-and-prostatic-fossa-radiation-therapy
#13
COMPARATIVE STUDY
Bill J Salter, Martin Szegedi, Christine Boehm, Vikren Sarkar, Prema Rassiah-Szegedi, Brian Wang, Hui Zhao, Jessica Huang, Long Huang, Kris Kokeny, Jonathan D Tward
PURPOSE: Our clinic is a long-term user of a first-generation transabdominal (TA) biplanar (2.5-dimensional [2.5D]) ultrasound image guidance (USIG) system for prostate cancer treatments. We are also an early adopter and development partner for a new, second-generation, fully 3D USIG system that allows for volumetric TA localization of the prostate. This new system has been evaluated at our institution by direct comparison with the previously established first-generation TA method for prostate alignment...
March 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28274406/assessing-long-term-complications-in-patients-undergoing-immediate-postmastectomy-breast-reconstruction-and-adjuvant-radiation
#14
Ryan Sacotte, Niel Fine, John Y Kim, Mohammed Alghoul, Kevin Bethke, Nora Hansen, Seema A Khan, Swati Kulkarni, Jonathan Strauss, John P Hayes, Eric D Donnelly
PURPOSE: The purpose of this article is to report the long-term rate and timing of complications associated with postmastectomy radiation therapy (PMRT) following immediate breast reconstruction in a large patient population. METHODS AND MATERIALS: We identified and reviewed the charts of all patients with stages I through IIIC breast cancer who underwent mastectomy with immediate reconstruction followed by subsequent radiation therapy between November 1997 and May 2010...
March 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28274405/state-of-dose-prescription-and-compliance-to-international-standard-icru-83-in-intensity-modulated-radiation-therapy-among-academic-institutions
#15
MULTICENTER STUDY
Indra J Das, Aaron Andersen, Zhe Jay Chen, Andrea Dimofte, Eli Glatstein, Jeremy Hoisak, Long Huang, Mark P Langer, Choonik Lee, Matthew Pacella, Richard A Popple, Roger Rice, Jennifer Smilowitz, Patricia Sponseller, Timothy Zhu
PURPOSE: The purpose of this study was to evaluate dose prescription and recording compliance to international standard (International Commission on Radiation Units & Measurements [ICRU]-83) in patients treated with intensity modulated radiation therapy (IMRT) among academic institutions. METHODS AND MATERIALS: Ten institutions participated in this study to collect IMRT data to evaluate compliance to ICRU-83. Under institutional review board clearance, data from 5094 patients-including treatment site, technique, planner, physician, prescribed dose, target volume, monitor units, planning system, and dose calculation algorithm-were collected anonymously...
March 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28274404/in-vivo-dosimetry-with-optically-stimulated-luminescent-dosimeters-for-conformal-and-intensity-modulated-radiation-therapy-a-2-year-multicenter-cohort-study
#16
MULTICENTER STUDY
Adam C Riegel, Yu Chen, Ajay Kapur, Laura Apicello, Abraham Kuruvilla, Anthony J Rea, Abolghassem Jamshidi, Louis Potters
PURPOSE: Optically stimulated luminescent dosimeters (OSLDs) are utilized for in vivo dosimetry (IVD) of modern radiation therapy techniques such as intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT). Dosimetric precision achieved with conventional techniques may not be attainable. In this work, we measured accuracy and precision for a large sample of clinical OSLD-based IVD measurements. METHODS AND MATERIALS: Weekly IVD measurements were collected from 4 linear accelerators for 2 years and were expressed as percent differences from planned doses...
March 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28274403/long-term-results-of-adjuvant-versus-early-salvage-postprostatectomy-radiation-a-large-single-institutional-experience
#17
COMPARATIVE STUDY
Daniela L Buscariollo, Michael Drumm, Andrzej Niemierko, Rebecca H Clayman, Sigolene Galland-Girodet, Danielle Rodin, Adam S Feldman, Douglas M Dahl, Francis J McGovern, Aria F Olumi, Alec Eidelman, William U Shipley, Anthony L Zietman, Jason A Efstathiou
PURPOSE: The purpose of this study was to evaluate freedom from biochemical failure (FFBF), freedom from androgen deprivation therapy (FFADT), freedom from distant metastases (FFDM), and overall survival (OS) after adjuvant radiation therapy (ART) versus early salvage radiation therapy (ESRT) in men with prostate cancer and adverse pathologic features (pT3 and/or positive surgical margins). METHODS AND MATERIALS: Of 718 patients consecutively treated with postoperative radiation therapy (RT) for prostate cancer between 1992 and 2013, we retrospectively identified 171 men receiving ART and 230 receiving ESRT (RT delivered at a prostate-specific antigen level ≤0...
March 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28274402/patient-reported-quality-of-life-during-definitive-and-postprostatectomy-image-guided-radiation-therapy-for-prostate-cancer
#18
Kevin Diao, Emily A Lobos, Eda Yirmibesoglu, Ram Basak, Laura H Hendrix, Brittney Barbosa, Seth M Miller, Kevin A Pearlstein, Gregg H Goldin, Andrew Z Wang, Ronald C Chen
PURPOSE: The importance of patient-reported outcomes is well-recognized. Long-term patient-reported symptoms have been described for individuals who completed radiation therapy (RT) for prostate cancer. However, the trajectory of symptom development during the course of treatment has not been well-described in patients receiving modern, image-guided RT. METHODS AND MATERIALS: Quality-of-life data were prospectively collected for 111 prostate cancer patients undergoing RT using the validated Prostate Cancer Symptom Indices, which assessed 5 urinary obstructive/irritative and 6 bowel symptoms...
March 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28274401/receiver-operating-curves-and-dose-volume-analysis-of-late-toxicity-with-stereotactic-body-radiation-therapy-for-prostate-cancer
#19
Li Zhang, Julian Johnson, Alexander R Gottschalk, Albert J Chang, I-Chow Hsu, Mack Roach, Zachary A Seymour
PURPOSE: The purpose of this study was to evaluate a receiver operating characteristic (ROC) curve method to determine dose thresholds with late genitourinary (GU) toxicity after stereotactic body radiation therapy for prostate cancer. METHODS AND MATERIALS: Seventy-eight patients diagnosed with low- to intermediate-risk prostate cancer and treated with stereotactic body radiation therapy alone were reviewed retrospectively. All patients received a total dose of 38 Gy in 4 fractions with a planning target volume expansion of 2 mm...
March 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28274400/adjuvant-radiation-in-the-tors-era-is-there-a-benefit-to-omitting-the-tumor-bed
#20
Stanislav Lazarev, Blagoja Todorov, James Tam, Vishal Gupta, Brett A Miles, Nancy Lee, Richard L Bakst
PURPOSE: Trans-oral robotic surgery (TORS) followed by adjuvant radiation therapy (RT) is becoming popular in treating node-positive tonsillar squamous cell carcinoma (SCC). One potential benefit is eliminating irradiation of the primary site when the tumor is widely resected, and targeting the neck only. This study assessed whether omitting the tumor bed provides any dosimetric or clinical advantage. METHODS AND MATERIALS: We identified 21 patients with primary tonsillar SCC that were treated with TORS followed by RT to the ipsilateral neck and primary (N+P) site...
March 2017: Practical Radiation Oncology
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