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https://www.readbyqxmd.com/read/28327923/heart-dose-exposure-as-prognostic-marker-after-radiotherapy-for-resectable-stage-iiia-b-non-small-cell-lung-cancer-secondary-analysis-of-a-randomised-trial
#1
M Guberina, W Eberhardt, M Stuschke, T Gauler, F Heinzelmann, D Cheufou, M Kimmich, G Friedel, H Schmidberger, K Darwiche, V Jendrossek, M Schuler, G Stamatis, C Pöttgen
BACKGROUND: Heart exposure to ionizing irradiation can cause ischemic heart disease. The partial heart volume receiving ≥5 Gy (heartV5) was supposed to be an independent prognostic factor for survival after radiochemotherapy for locally advanced non-small cell lung cancer (NSCLC). But validation of the latter hypothesis is needed under the concurrent risks of lung cancer patients. PATIENTS AND METHODS: The ESPATUE phase III trial recruited patients with potentially operable IIIA(N2)/selected IIIB NSCLC between 01/2004 and 01/2013...
February 21, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28323339/adjuvant-radiation-therapy-androgen-deprivation-and-docetaxel-for-high-risk-prostate-cancer-postprostatectomy-results-of-nrg-oncology-rtog-study-0621
#2
Mark D Hurwitz, Jonathan Harris, Oliver Sartor, Ying Xiao, Bobby Shayegan, Paul W Sperduto, Kasra R Badiozamani, Colleen A F Lawton, Eric M Horwitz, Jeff M Michalski, Kevin Roof, David C Beyer, Qiang Zhang, Howard M Sandler
BACKGROUND: Phase 3 trials have demonstrated a benefit from adjuvant radiation therapy (ART) for men who have adverse factors at radical prostatectomy (RP). However, some patients have a high risk of progression despite ART. The role of systemic therapy with ART in this high-risk group remains to be defined. METHODS: Patients who had either a post-RP prostate-specific antigen (PSA) nadir > 0.2 ng/mL and a Gleason score ≥7 or a PSA nadir ≤0.2 ng/mL, a Gleason score ≥8, and a pathologic tumor (pT) classification ≥ pT3 received 6 months of androgen-deprivation therapy (ADT) plus radiotherapy and 6 cycles of docetaxel...
March 21, 2017: Cancer
https://www.readbyqxmd.com/read/28297436/simultaneously-integrated-boost-sib-spares-oar-and-reduces-treatment-time-in-locally-advanced-cervical-cancer
#3
Christine H Feng, Yasmin Hasan, Malgorzata Kopec, Hania A Al-Hallaq
We performed a dosimetric comparison of sequential IMRT (sIMRT) and simultaneously integrated boost (SIB) IMRT to boost PET-avid lymph nodes while concurrently treating pelvic targets to determine the potential of SIB IMRT to reduce overall treatment duration in locally advanced cervical cancer. Ten patients receiving definitive radiation therapy were identified retrospectively. RTOG consensus guidelines were followed to delineate the clinical target volume and organs at risk (OAR), which were then expanded per IMRT consortium guidelines to yield the planning target volume (PTV)...
September 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297346/initial-evaluation-of-automated-treatment-planning-software
#4
Dawn Gintz, Kujtim Latifi, Jimmy Caudell, Benjamin Nelms, Geoffrey Zhang, Eduardo Moros, Vladimir Feygelman
Even with advanced inverse-planning techniques, radiation treatment plan optimization remains a very time-consuming task with great output variability, which prompted the development of more automated approaches. One commercially available technique mimics the actions of experienced human operators to progressively guide the traditional optimization process with automatically created regions of interest and associated dose-volume objectives. We report on the initial evaluation of this algorithm on 10 challenging cases of locoreginally advanced head and neck cancer...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297341/assessment-of-monte-carlo-algorithm-for-compliance-with-rtog-0915-dosimetric-criteria-in-peripheral-lung-cancer-patients-treated-with-stereotactic-body-radiotherapy
#5
Damodar Pokhrel, Sumit Sood, Rajeev Badkul, Hongyu Jiang, Christopher McClinton, Christopher Lominska, Parvesh Kumar, Fen Wang
The purpose of the study was to evaluate Monte Carlo-generated dose distributions with the X-ray Voxel Monte Carlo (XVMC) algorithm in the treatment of peripheral lung cancer patients using stereotactic body radiotherapy (SBRT) with non-protocol dose-volume normalization and to assess plan outcomes utilizing RTOG 0915 dosimetric compliance criteria. The Radiation Therapy Oncology Group (RTOG) protocols for non-small cell lung cancer (NSCLC) currently require radiation dose to be calculated using tissue density heterogeneity corrections...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28291927/single-fraction-radiosurgery-stereotactic-body-radiation-therapy-sbrt-for-spine-metastasis-a-dosimetric-comparison-of-multiple-delivery-platforms
#6
Adrian Nalichowski, Isaac Kaufman, John Gallo, Todd Bossenberger, Tim Solberg, Ezequiel Ramirez, Yulong Yan, Julie Fredrick, Tewfik Bichay, Alan Mayville, Jay Burmeister
There are numerous commercial radiotherapy systems capable of delivering single fraction spine radiosurgery/SBRT. We aim to compare the capabilities of several of these systems to deliver this treatment when following standardized criteria from a national protocol. Four distinct target lesions representing various case presentations of spine metastases were contoured in both the thoracic and lumbar spine of an anthropomorphic SBRT phantom. Single fraction radiosurgery/SBRT plans were designed for each target with each of our treatment platforms...
January 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28285537/milestone-clinical-trials-of-the-national-surgical-adjuvant-breast-and-bowel-project-nsabp
#7
REVIEW
Priya Rastogi, D Lawrence Wickerham, Charles E Geyer, Eleftherios P Mamounas, Thomas B Julian, Norman Wolmark
The National Surgical Adjuvant Breast and Bowel Project (NSABP) has made significant contributions in reducing the extent of breast surgery and in improving outcomes of patients with early-stage breast cancer through the conduct of large randomized clinical trials evaluating local and systemic therapy. In 2014, the NSABP merged with two other US National Cancer Institute-funded cooperative groups, the Radiation Therapy Oncology Group (RTOG) and the Gynecologic Oncology Group (GOG), to form NRG Oncology. The combined organization has 218 member institutions with more than 600 affiliate centers located throughout the United States, Canada, Puerto Rico, and other international sites...
February 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28281862/model-based-approach-for-quantitative-estimates-of-skin-heart-and-lung-toxicity-risk-for-left-side-photon-and-proton-irradiation-after-breast-conserving-surgery
#8
Francesco Tommasino, Marco Durante, Vittoria D'Avino, Raffaele Liuzzi, Manuel Conson, Paolo Farace, Giuseppe Palma, Marco Schwarz, Laura Cella, Roberto Pacelli
BACKGROUND: Proton beam therapy represents a promising modality for left-side breast cancer (BC) treatment, but concerns have been raised about skin toxicity and poor cosmesis. The aim of this study is to apply skin normal tissue complication probability (NTCP) model for intensity modulated proton therapy (IMPT) optimization in left-side BC. MATERIAL AND METHODS: Ten left-side BC patients undergoing photon irradiation after breast-conserving surgery were randomly selected from our clinical database...
March 10, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28281359/changes-in-skin-microcirculation-during-radiation-therapy-for-breast-cancer
#9
Erik Tesselaar, Anna M Flejmer, Simon Farnebo, Alexandru Dasu
BACKGROUND: The majority of breast cancer patients who receive radiation treatment are affected by acute radiation-induced skin changes. The assessment of these changes is usually done by subjective methods, which complicates the comparison between different treatments or patient groups. This study investigates the feasibility of new robust methods for monitoring skin microcirculation to objectively assess and quantify acute skin reactions during radiation treatment. MATERIAL AND METHODS: Laser Doppler flowmetry, laser speckle contrast imaging, and polarized light spectroscopy imaging were used to measure radiation-induced changes in microvascular perfusion and red blood cell concentration (RBC) in the skin of 15 patients undergoing adjuvant radiation therapy for breast cancer...
March 10, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28263446/reirradiation-of-head-and-neck-cancer-long-term-disease-control-and-toxicity
#10
Wouter T C Bots, Sven van den Bosch, Ellen M Zwijnenburg, Tim Dijkema, Guido B van den Broek, Willem L J Weijs, Lia C G Verhoef, Johannes H A M Kaanders
BACKGROUND: The purpose of this study was to report long-term disease control and late radiation toxicity for patients reirradiated for head and neck cancer. METHODS: We conducted a retrospective analysis of 137 patients reirradiated with a prescribed dose ≥45 Gy between 1986 and 2013 for a recurrent or second primary malignancy. Endpoints were locoregional control, overall survival (OS), and grade ≥4 late complications according to European Organization for Research and Treatment of Cancer (EORTC)/Radiation Therapy Oncology Group (RTOG) criteria...
March 6, 2017: Head & Neck
https://www.readbyqxmd.com/read/28255809/unplanned-irradiation-of-internal-mammary-lymph-nodes-in-breast-cancer
#11
Gul Kanyilmaz, Meryem Aktan, Mehmet Koc, Hikmettin Demir, Lütfi Saltuk Demir
AIMS: To evaluate the incidental dose to the internal mammary chain (IMC) in patients treated with three-dimensional conformal radiotherapy, to estimate the predictors affecting the magnitude of IMC receiving dose and to determine the predictive role of clinical parameters on survival. MATERIALS AND METHODS: Between 2009 and 2015, 348 patients undergoing RT for breast cancer were retrospectively analyzed. All patients underwent our department's routine procedure for breast cancer...
March 3, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28244415/a-randomized-phase-2-trial-of-prophylactic-manuka-honey-for-the-reduction-of-chemoradiation-therapy-induced-esophagitis-during-the-treatment-of-lung-cancer-results-of-nrg-oncology-rtog-1012
#12
Shannon E Fogh, Snehal Deshmukh, Lawrence B Berk, Amylou C Dueck, Kevin Roof, Sherif Yacoub, Thomas Gergel, Kevin Stephans, Andreas Rimner, Albert DeNittis, John Pablo, Justin Rineer, Terence M Williams, Deborah Bruner
PURPOSE: Randomized trials have shown that honey is effective for the prevention of radiation-induced mucositis in head and neck cancer patients. Because there is no efficacious preventative for radiation esophagitis in lung cancer patients, this trial compared liquid honey, honey lozenges, and standard supportive care for radiation esophagitis. METHODS: The patients were stratified by percentage of esophagus receiving specific radiation dose (V60 Gy esophagus <30% or ≥30%) and were then randomized between supportive care, 10 mL of liquid manuka honey 4 times a day, and 2 lozenges (10 mL of dehydrated manuka honey) 4 times a day during concurrent chemotherapy and radiation therapy...
March 15, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28243923/risks-and-benefits-of-reducing-target-volume-margins-in-breast-tangent-radiotherapy
#13
Deepak Basaula, Alexandra Quinn, Amy Walker, Vikneswary Batumalai, Shivani Kumar, Geoff P Delaney, Lois Holloway
This study investigates the potential benefits of planning target volume (PTV) margin reduction for whole breast radiotherapy in relation to dose received by organs at risk (OARs), as well as reductions in radiation-induced secondary cancer risk. Such benefits were compared to the increased radiation-induced secondary cancer risk attributed from increased ionizing radiation imaging doses. Ten retrospective patients' computed tomography datasets were considered. Three computerized treatment plans with varied PTV margins (0, 5 and 10 mm) were created for each patient complying with the Radiation Therapy Oncology Group (RTOG) 1005 protocol requirements...
February 27, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28216622/effects-of-gene-polymorphisms-in-the-endoplasmic-reticulum-stress-pathway-on-clinical-outcomes-of-chemoradiotherapy-in-chinese-patients-with-nasopharyngeal-carcinoma
#14
Xiao-Bin Guo, Wan-le Ma, Li-Juan Liu, Yu-Ling Huang, Jing Wang, Li-Hua Huang, Xiang-Dong Peng, Ji-Ye Yin, Jin-Gao Li, Shao-Jun Chen, Guo-Ping Yang, Hui Wang, Cheng-Xian Guo
There is considerable inter-individual variabil¬ity in chemoradiotherapy responses in nasopharyngeal carcinoma (NPC) patients receiv¬ing the same or similar treatment protocols. In this study we evaluated the association between the gene polymorphisms in endoplasmic reticulum (ER) stress pathway and chemoradiation responses in Chinese NPC patients. A total of 150 patients with histopathologically conformed NPC and treated with concurrent chemoradiotherapy were enrolled. Genotypes in ER stress pathway genes, including VCP (valosin-containing protein) rs2074549, HSP90B1 rs17034943, CANX (calnexin) rs7566, HSPA5 [heat shock protein family A (Hsp70) member 5] rs430397, CALCR (calcitonin receptor) rs2528521, and XBP1 (X-box binding protein 1) rs2269577 were analyzed by Sequenom MassARRAY system...
February 20, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28203163/is-the-deep-inspiration-breath-hold-technique-superior-to-the-free-breathing-technique-in-cardiac-and-lung-sparing-while-treating-both-left-sided-post-mastectomy-chest-wall-and-supraclavicular-regions
#15
Anupama Darapu, Rajesh Balakrishnan, Patricia Sebastian, Mohamathu Rafic Kather Hussain, Paul Ravindran, Subhashini John
AIMS: To evaluate the efficacy of the deep inspirational breath-hold (DIBH) technique and its dosimetric advantages over the free breathing (FB) technique in cardiac (heart and left anterior descending artery [LAD]) and ipsilateral lung sparing in left-sided post-mastectomy field-in-field conformal radiotherapy. DIBH is highly reproducible, and this study aims to find out its dosimetric benefits over FB. MATERIALS AND METHODS: Nineteen left-sided mastectomy patients were immobilized using breast boards with both arms positioned above the head...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28155608/helical-tomotherapy-versus-conventional-technique-for-post-mastectomy-left-sided-breast-cancer-dosimetric-study
#16
M O Alshabanah, Mohamed Hegazy, Belal Moftah, Mohammad Shabanah
METHODS AND MATERIALS: Treatment plans were generated for 5 post mastectomy left sided breast cancer patients treated at king Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia, comparing three-dimensional technique with the HT planning. The prescribed dose was 50 Gy in 25 fractions; the planning target volume (chest wall and nodal volumes) was contoured according to RTOG atlas and the heart, lungs, spinal cord and contralateral breast were contoured as Organs at Risks (OARs)...
February 1, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/28152780/changing-patterns-of-care-for-locally-advanced-non-small-cell-lung-cancer-nsclc-implications-for-quality-initiatives
#17
Peter Edward Gabriel, Wensheng Guo, Sandhya Upasani, Marjorie van der Pas, Timothy E Schultheiss, Joel W Goldwein, John Paul Christodouleas
302 Background: Our purpose was to assess the utilization of dose escalated radiotherapy (RT) in Stage III NSCLC patients in the United States from 2004-2013, a period when no Level 1 evidence on dose escalation was published. METHODS: Data on all NSCLC patients treated with RT were extracted from the National Oncology Data Alliance (NODA), a pooled database of cancer registries from >150 US hospitals. The NODA contains the same data submitted to state cancer registries and SEER, but also contains RT dose fields that are manually verified by trained staff...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28146658/radiation-with-or-without-antiandrogen-therapy-in-recurrent-prostate-cancer
#18
RANDOMIZED CONTROLLED TRIAL
William U Shipley, Wendy Seiferheld, Himanshu R Lukka, Pierre P Major, Niall M Heney, David J Grignon, Oliver Sartor, Maltibehn P Patel, Jean-Paul Bahary, Anthony L Zietman, Thomas M Pisansky, Kenneth L Zeitzer, Colleen A F Lawton, Felix Y Feng, Richard D Lovett, Alexander G Balogh, Luis Souhami, Seth A Rosenthal, Kevin J Kerlin, James J Dignam, Stephanie L Pugh, Howard M Sandler
Background Salvage radiation therapy is often necessary in men who have undergone radical prostatectomy and have evidence of prostate-cancer recurrence signaled by a persistently or recurrently elevated prostate-specific antigen (PSA) level. Whether antiandrogen therapy with radiation therapy will further improve cancer control and prolong overall survival is unknown. Methods In a double-blind, placebo-controlled trial conducted from 1998 through 2003, we assigned 760 eligible patients who had undergone prostatectomy with a lymphadenectomy and had disease, as assessed on pathological testing, with a tumor stage of T2 (confined to the prostate but with a positive surgical margin) or T3 (with histologic extension beyond the prostatic capsule), no nodal involvement, and a detectable PSA level of 0...
February 2, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28133758/feasibility-of-robotic-stereotactic-body-radiotherapy-of-lung-tumors-with-kilovoltage-x-ray-beams
#19
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/28129973/acute-toxicity-and-its-dosimetric-correlates-for-high-risk-prostate-cancer-treated-with-moderately-hypofractionated-radiotherapy
#20
Moses Arunsingh, Indranil Mallick, Sriram Prasath, B Arun, Sandip Sarkar, Raj Kumar Shrimali, Sanjoy Chatterjee, Rimpa Achari
AIMS: To report the acute toxicity and the dosimetric correlates after moderately hypofractionated radiotherapy for localized prostate cancer. METHODS: A total of 101 patients with localized prostate cancer were treated with image-guided intensity-modulated radiation therapy. Patients were treated to 65Gy/25Fr/5 weeks (n = 18), or 60Gy/20Fr/4 weeks (n = 83). Most (82.2%) had high-risk or pelvic node-positive disease. Acute toxicity was assessed using Radiation Therapy Oncology Group (RTOG) acute morbidity scoring criteria...
April 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
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