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Practical Radiation Oncology

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https://www.readbyqxmd.com/read/28939352/in-regard-to-sher-et-al
#1
LETTER
Gary V Walker, Pierre Blanchard, Adam S Garden
No abstract text is available yet for this article.
August 5, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28939353/reproducibility-in-contouring-the-neurovascular-bundle-for-prostate-cancer-radiation-therapy
#2
Richard J Cassidy, Sherif G Nour, Tian Liu, Jeffrey M Switchenko, Sibo Tian, Matthew J Ferris, Robert H Press, Jim Zhong, Mustafa Abugideiri, Peter J Rossi, Ashesh B Jani
PURPOSE: Efforts to define the neurovascular bundle (NVB) for prostate radiation have varied. In this series, we sought to determine the reproducibility and reliability of contouring the classical posterolateral NVB on dedicated pelvic magnetic resonance imaging (MRI) scans. METHODS AND MATERIALS: A total of 120 NVB structures were defined on 10 3-Tesla pelvic MRI scans in patients with prostate cancer but without extraprostatic extension. One pelvic radiologist served as the expert in contouring the right and left NVB for each case...
August 3, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28751227/postoperative-local-regional-radiation-therapy-in-the-treatment-of-parathyroid-carcinoma-the-md-anderson-experience-of-35-years
#3
Ioannis Christakis, Angelica M Silva, Michelle D Williams, Adam Garden, Elizabeth G Grubbs, Naifa L Busaidy, Jeffrey E Lee, Nancy D Perrier, Mark Zafereo
PURPOSE: We aimed to investigate outcomes of locoregional radiation therapy (XRT) in parathyroid carcinoma (PC) patients at a single institution over 35 years. METHODS AND MATERIALS: Retrospective review of PC patients who received postoperative locoregional XRT (1980-2015). Patients were grouped according to XRT after PC initial operation or after salvage surgery. All patients with a histopathological diagnosis of PC who had postoperative locoregional XRT at our institution were included...
July 21, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28939351/standardization-of-nodal-radiation-therapy-through-changes-to-a-breast-cancer-clinical-pathway-throughout-a-large-integrated-cancer-center-network
#4
Brian J Gebhardt, Joel Thomas, Zachary D Horne, Colin E Champ, Gretchen M Ahrendt, Emilia Diego, Dwight E Heron, Sushil Beriwal
BACKGROUND: Studies demonstrate safety of omitting axillary nodal dissection for early-stage breast cancer with positive sentinel lymph node (+SLN) biopsy, although trial designs differed in radiation therapy (RT) fields. Regional nodal irradiation was separately shown to improve outcomes in high-risk patients. This led to lack of consensus in RT volumes. Clinical pathways (CPs) standardize care where practice varies unnecessarily. We evaluated the impact of changes to a CP guiding postoperative RT in women with +SLNs on practice patterns throughout a network...
July 20, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28888675/radiation-dose-and-cardiac-risk-in-breast-cancer-treatment-an-analysis-of-modern-radiation-therapy-including-community-settings
#5
Julian C Hong, Elham Rahimy, Cary P Gross, Timothy Shafman, Xin Hu, James B Yu, Rudi Ross, Steven E Finkelstein, Arie Dosoretz, Henry S Park, Pamela R Soulos, Suzanne B Evans
PURPOSE: Adjuvant radiation therapy (RT) for breast cancer improves outcomes, but prior studies have documented substantive cardiac dose and cardiac risk. We assessed the mean heart dose (MHD) of RT and estimated the risk of RT-associated cardiac toxicity in women undergoing adjuvant RT for breast cancer in contemporary (predominantly) community practice. METHODS AND MATERIALS: We identified women with left-sided breast cancer receiving adjuvant RT between 2012 and 2014 from 94 centers across 16 states...
July 20, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28919249/dosimetric-predictors-for-acute-esophagitis-during-radiation-therapy-for-lung-cancer-results-of-a-large-statewide-observational-study
#6
Peter Paximadis, Matthew Schipper, Martha Matuszak, Mary Feng, Shruti Jolly, Thomas Boike, Inga Grills, Larry Kestin, Benjamin Movsas, Kent Griffith, Gregory Gustafson, Jean Moran, Teamour Nurushev, Jeffrey Radawski, Lori Pierce, James Hayman
PURPOSE: The purpose of this study is to identify dosimetric variables that best predict for acute esophagitis in patients treated for locally advanced non-small cell lung cancer in a prospectively accrued statewide consortium. METHODS AND MATERIALS: Patients receiving definitive radiation therapy for stage II-III non-small cell lung cancer within the Michigan Radiation Oncology Quality Consortium were included in the analysis. Dose-volume histogram data were analyzed to determine absolute volumes (cc) receiving doses from 10 to 60 Gy (V10, V20, V30, V40, V50, and V60), as well as maximum dose to 2 cc (D2cc), mean dose (MD), and generalized equivalent uniform dose (gEUD)...
July 19, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28919248/safety-of-differential-radiation-dosing-in-lymph-node-positive-necks-treated-with-imrt
#7
Stephen Sozio, Zorimar Rivera-Núñez, Omar Mahmoud, Sung Kim
PURPOSE: When treating head and neck squamous cell carcinoma (HNSCC) with intensity modulated radiation therapy (IMRT), it is common to use several dose levels for a lymph node positive neck: full dose (66-70 Gy) to gross cancer, intermediate dose (59-63 Gy) to higher risk neck regions, and standard dose (50-54 Gy) to lower risk neck regions. There is no consensus regarding how much of the neck should receive intermediate versus standard dose, however. METHODS AND MATERIALS: HNSCC patients treated with IMRT were identified from 2 academic medical centers between 2004 and 2016...
July 19, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28867547/stereotactic-radiosurgery-for-treatment-of-multiple-brain-metastases-remembering-to-spare-the-hippocampus-in-regard-to-zhang-et-al
#8
LETTER
Deborah R Smith, Cheng-Chia Wu, Tony J C Wang
No abstract text is available yet for this article.
July 12, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28867542/use-only-as-directed
#9
LETTER
Isabella Zhang, Jonathan P S Knisely
No abstract text is available yet for this article.
July 12, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28867548/treatment-of-bilateral-breast-cancer-and-regional-nodes-using-an-opposed-lateral-beam-arrangement
#10
Ahsan S Farooqi, Tzouh-Liang Sun, Sandy Thang, Simona F Shaitelman
No abstract text is available yet for this article.
July 8, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28867546/reirradiation-of-thoracic-cancers-with-intensity-modulated-proton-therapy
#11
Jennifer C Ho, Quynh-Nhu Nguyen, Heng Li, Pamela K Allen, Xiaodong Zhang, Zhongxing Liao, X Ronald Zhu, Daniel Gomez, Steven H Lin, Michael Gillin, Ritsuko Komaki, Stephen Hahn, Joe Y Chang
PURPOSE: Reirradiation of thoracic malignancies is a treatment challenge, with concerns for toxicity and the inability to deliver definitive doses. Intensity modulated proton therapy (IMPT) may allow safe delivery of a higher dose of radiation to the tumor while minimizing toxicities. METHODS AND MATERIALS: Between 2011 and 2016, 27 patients who received IMPT for reirradiation of thoracic malignancies with definitive intent were retrospectively analyzed. Patients were included if they received a prior thoracic radiation course...
July 8, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28867544/standardization-of-radiation-therapy-dose-for-locally-advanced-non-small-cell-lung-cancer-through-changes-to-a-lung-cancer-clinical-pathway-in-a-large-integrated-comprehensive-cancer-center-network
#12
Pooja Karukonda, Brian J Gebhardt, Zachary D Horne, Dwight E Heron, Sushil Beriwal
PURPOSE: The results of Radiation Therapy Oncology Group (RTOG) 0617, which randomized patients with stages IIIA/IIIB non-small cell lung cancer (NSCLC) to definitive chemoradiation therapy to 60 Gy versus 74 Gy, demonstrated a detrimental survival impact with high-dose radiation therapy. We evaluated the impact of changes to a provider-driven clinical pathway (CP) guiding management of NSCLC on practice throughout our cancer center network. METHODS AND MATERIALS: In 2001, we implemented a CP for management of stage IIIA/IIIB NSCLC with definitive chemoradiation therapy...
July 8, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28865761/predicting-severe-hematologic-toxicity-from-extended-field-chemoradiation-of-para-aortic-nodal-metastases-from-cervical-cancer
#13
Kevin Yan, Ezequiel Ramirez, Xian-Jin Xie, Xuejun Gu, Yin Xi, Kevin Albuquerque
PURPOSE: The purpose of this study was to determine factors predictive for severe hematologic toxicity (HT) in cervical cancer patients with para-aortic lymph node metastasis treated with concurrent cisplatin chemoradiation to an extended field (EFCRT). METHODS AND MATERIALS: Thirty-eight patients with cervical cancer and para-aortic lymph node metastasis who underwent EFCRT were analyzed. Active bone marrow was defined as the region within irradiated total bone marrow (BMTOT) with a standard uptake value on (18)F-fluorodeoxyglucose positron emission tomography/computed tomography greater than the mean standard uptake value for BMTOT...
July 8, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28886941/should-functional-renal-scans-be-obtained-prior-to-upper-abdominal-imrt-for-pancreatic-cancer
#14
Grace C Blitzer, William A Hall, Susan Tsai, Mohammed Aldakkak, Robert S Hellman, Douglas B Evans, Kathleen K Christians, Ben George, Paul S Ritch, Beth A Erickson
BACKGROUND: Upper abdominal irradiation for pancreatic cancer is administered in close proximity to the radiation-sensitive kidneys. There is difficulty in defining dose-volume parameters to predict late renal toxicity after partial kidney irradiation. Less than 10% of the general population is estimated to have asymmetrical kidney function; however, there are no studies that examine this in patients with pancreatic cancer. The primary purpose of this study was to determine the prevalence of asymmetrical kidney function in patients with pancreatic cancer...
June 29, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28867545/never-too-old-a-single-institution-experience-of-stereotactic-body-radiation-therapy-for-patients-90-years-and-older-with-early-stage-lung-cancer
#15
Gregory M M Videtic, Neil M Woody, Chandana A Reddy, Kevin L Stephans
PURPOSE: To report on the patient, tumor, and treatment characteristics of patients aged 90 years or older who were treated with lung stereotactic body radiation therapy (SBRT) for early stage lung cancer and the resulting clinical outcomes. METHODS AND MATERIALS: We surveyed our institutional review board-approved prospective lung SBRT data registry for patients aged 90 years or older who were treated for early stage lung cancer to determine the rates of local failure, progression-free survival, and overall survival as well as treatment-related toxicity...
June 29, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28867543/clinical-outcomes-of-hypofractionated-radiation-therapy-for-choroidal-metastases-symptom-palliation-tumor-control-and-survival
#16
Ezra Hahn, Normand Laperriere, Hatem Krema, Juan P Velazquez-Martin, Sohel Somani, John Waldron, Rand Simpson, David Payne, Caroline Chung
PURPOSE: External beam radiation therapy (RT) is an effective palliative treatment for patients with choroidal metastases and is aimed at preserving vision and obtaining local tumor control. Delivery of 30 to 40 Gy in 2-Gy daily fractions is a standard approach at many centers. This study reports the outcomes of a hypofractionated schedule of 20 Gy in 5 fractions in this palliative setting. METHODS AND MATERIALS: We conducted a retrospective review of patients who were treated with RT (20 Gy in 5 fractions) for choroidal metastases between January 1999 and November 2012...
June 29, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28751229/improving-efficiency-and-safety-in-external-beam-radiation-therapy-treatment-delivery-using-a-kaizen-approach
#17
Ajay Kapur, Nilda Adair, Mildred O'Brien, Nikoleta Naparstek, Thomas Cangelosi, Petrina Zuvic, Sherin Joseph, Jason Meier, Beatrice Bloom, Louis Potters
INTRODUCTION: Modern external beam radiation therapy treatment delivery processes potentially increase the number of tasks to be performed by therapists and thus opportunities for errors, yet the need to treat a large number of patients daily requires a balanced allocation of time per treatment slot. The goal of this work was to streamline the underlying workflow in such time-interval constrained processes to enhance both execution efficiency and active safety surveillance using a Kaizen approach...
June 29, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28865684/causal-factors-for-error-in-radiation-oncology
#18
EDITORIAL
Suzanne B Evans
No abstract text is available yet for this article.
September 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28865683/evaluation-of-near-miss-and-adverse-events-in-radiation-oncology-using-a-comprehensive-causal-factor-taxonomy
#19
Matthew B Spraker, Robert Fain, Olga Gopan, Jing Zeng, Matthew Nyflot, Loucille Jordan, Gabrielle Kane, Eric Ford
PURPOSE: Incident learning systems (ILSs) are a popular strategy for improving safety in radiation oncology (RO) clinics, but few reports focus on the causes of errors in RO. The goal of this study was to test a causal factor taxonomy developed in 2012 by the American Association of Physicists in Medicine and adopted for use in the RO: Incident Learning System (RO-ILS). METHODS AND MATERIALS: Three hundred event reports were randomly selected from an institutional ILS database and Safety in Radiation Oncology (SAFRON), an international ILS...
September 2017: Practical Radiation Oncology
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...
September 2017: Practical Radiation Oncology
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