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Simultaneous integrated boost

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https://www.readbyqxmd.com/read/27896797/a-telephone-based-intervention-to-promote-physical-activity-during-smoking-cessation-a-randomized-controlled-proof-of-concept-study
#1
Uma S Nair, Freda Patterson, Daniel Rodriguez, Bradley N Collins
Smoking and physical inactivity contribute to disproportionate disease burden among underserved adults. Telephone-based interventions (quitlines) are becoming the standard care for addressing smoking. There is increasing interest to determine whether quitlines can be utilized to administer interventions for other unhealthy behaviors. This study aims to examine the proof-of-concept and potential efficacy of a telephone-based behavioral counseling intervention to boost daily low-to-moderate physical activity among low-income, physically inactive smokers...
November 28, 2016: Translational Behavioral Medicine
https://www.readbyqxmd.com/read/27880737/development-and-clinical-introduction-of-automated-radiotherapy-treatment-planning-for-prostate-cancer
#2
D Winkel, G H Bol, B van Asselen, J Hes, V Scholten, L G W Kerkmeijer, B W Raaymakers
To develop an automated radiotherapy treatment planning and optimization workflow to efficiently create patient specifically optimized clinical grade treatment plans for prostate cancer and to implement it in clinical practice. A two-phased planning and optimization workflow was developed to automatically generate 77Gy 5-field simultaneously integrated boost intensity modulated radiation therapy (SIB-IMRT) plans for prostate cancer treatment. A retrospective planning study (n  =  100) was performed in which automatically and manually generated treatment plans were compared...
November 23, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27843034/intensity-modulated-radiation-therapy-with-simultaneous-integrated-boost-in-patients-with-brain-oligometastases-a-phase-1-study-iside-bm-1
#3
Marica Ferro, Silvia Chiesa, Gabriella Macchia, Savino Cilla, Federica Bertini, Giovanni Frezza, Andrea Farioli, Silvia Cammelli, Mario Balducci, Anna Ianiro, Anna Lisa Angelini, Gaetano Compagnone, Vincenzo Valentini, Francesco Deodato, Alessio G Morganti
PURPOSE: To investigate the maximum tolerated dose of intensity modulated radiation therapy simultaneous integrated boost whole-brain radiation therapy for palliative treatment of patients with <5 brain metastases using a standard linear accelerator. MATERIALS AND METHODS: The whole brain plus 3-mm margin was defined as the planning target volume (PTVwb), whereas each brain metastasis, defined as the contrast-enhancing tumor on MRI T1 scans, plus a 3-mm isotropic margin, was defined as metastases PTV (PTVm)...
September 23, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27805408/highly-efficient-hydrogen-evolution-from-edge-oriented-ws2-1-x-se2x-particles-on-three-dimensional-porous-nise2-foam
#4
Haiqing Zhou, Fang Yu, Jingying Sun, Hangtian Zhu, Ishwar Kumar Mishra, Shuo Chen, Zhifeng Ren
The large consumption of natural fossil fuels and accompanying environmental problems are driving the exploration of cost-effective and robust catalysts for hydrogen evolution reaction (HER) in water splitting. Tungsten dichalcogenides (WS2, WSe2, etc.) are promising candidates for such purpose, but their HER performances are inherently limited by the sparse catalytic edge sites and poor electrical conductivity. Here we demonstrate a highly active and stable HER catalyst by integrating ternary tungsten sulfoselenide WS2(1-x)Se2x particles with a 3D porous metallic NiSe2 foam, in which good electrical conductivity, good contact, high surface area, and high-density active edge sites are simultaneously obtained, thus contributing to good catalytic performance: large cathode current density (- 10 mA/cm2 at - 88 mV), low Tafel slope (46...
November 2, 2016: Nano Letters
https://www.readbyqxmd.com/read/27797223/hippocampal-sparing-whole-brain-radiotherapy-and-integrated-simultaneous-boost-vs-stereotactic-radiosurgery-boost-a-comparative-dosimetric-planning-study
#5
Soon Keat Cheah, Thomas Matthews, Bin Sing Teh
BACKGROUND: Whole brain radiotherapy (WBRT) and stereotactic radiosurgery were frequently used to palliate patients with brain metastases. It remains controversial which modality or combination of therapy is superior especially in the setting of limited number of brain metastases. The availability of newer medical therapy that improves survival highlighted the importance of reducing long term radiation toxicity associated with WBRT. In this study, we aim to demonstrate the hippocampal sparing technique with whole brain and integrated simultaneous boost Materials and Methods: Planning data from 10 patients with 1-5 brain metastases treated with SRS were identified...
2016: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/27794500/local-control-and-toxicity-of-a-simultaneous-integrated-boost-for-dose-escalation-in-locally-advanced-esophageal-cancer-interim-results-from-a-prospective-phase-i-ii-trial
#6
James W Welsh, Steven N Seyedin, Pamela K Allen, Wayne L Hofstetter, Jaffer A Ajani, Joe Y Chang, Daniel R Gomez, Arya Amini, Stephen G Swisher, Mariela A Blum, Ahmed I Younes, Quynh-Nhu Nguyen, Bruce D Minsky, Jeremy J Erasmus, Jeffrey H Lee, Manoop Bhutani, Ritsuko U Komaki
INTRODUCTION: Approximately 50% of recurrences after standard-dose chemoradiation for locally advanced esophageal cancer occur within the gross tumor volume (GTV). In this prospective phase I/II clinical trial, we explored use of a simultaneous integrated boost (SIB) dose to the GTV. METHODS: Forty-four patients with unresectable esophageal cancer received chemoradiation with an SIB of 58.8-63 Gy to the GTV and 50.4 Gy to the PTV, all in 28 fractions, with 5 weeks of concurrent docetaxel and fluorouracil or capecitabine...
October 26, 2016: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/27793444/radiation-induced-fibrosis-in-the-boost-area-after-three-dimensional-conformal-radiotherapy-with-a-simultaneous-integrated-boost-technique-for-early-stage-breast-cancer-a-multivariable-prediction-model
#7
C Hammer, J H Maduro, E J Bantema-Joppe, A van der Schaaf, H P van der Laan, J A Langendijk, A P G Crijns
BACKGROUND AND PURPOSE: To develop a multivariable prediction model for the risk of grade⩾2 fibrosis in the boost area after breast conserving surgery (BCS) followed by three-dimensional conformal radiotherapy (RT) with a simultaneous integrated photon boost (3D-CRT-SIB), five years after RT. MATERIAL AND METHODS: This prospective cohort study included 1,030 patients treated with RT for breast cancer (stage 0-III), after BCS. Data regarding physician-rated fibrosis and dose-volume parameters were available in 546 patients...
October 25, 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/27756417/pancreatic-cancer-adjuvant-radiotherapy-target-volume-design-based-on-the-postoperative-local-recurrence-spatial-location
#8
Wei Yu, Wei Hu, Yongjie Shui, Xiaoyang Zhu, Chao Li, Xiaoqiu Ren, Xueli Bai, Risheng Yu, Li Shen, Tingbo Liang, Lei Zheng, Qichun Wei
OBJECTIVES: To explore the areas at highest risk for postoperative pancreatic cancer local recurrence according to the spatial location of local failures, with the aim to provide a precise target volume for pancreatic cancer adjuvant radiotherapy. METHODS: Patients with pancreatic cancer who had undergone surgery for the primary tumor in pancreas at our institution from January 2010 to August 2015 were retrospectively analyzed. All local recurrences were plotted on the computed tomography (CT) image of a representative patient according to their relative coordinates to superior mesenteric artery (SMA) or celiac axis (CA)...
October 19, 2016: Radiation Oncology
https://www.readbyqxmd.com/read/27741387/reducing-cardiac-doses-a-novel-multi-leaf-collimator-modification-technique-to-reduce-left-anterior-descending-coronary-artery-dose-in-patients-with-left-sided-breast-cancer
#9
Briana Welsh, Michael Chao, Farshad Foroudi
INTRODUCTION: When irradiating the left breast, a small portion of the heart and left anterior descending coronary artery (LAD) are often included in the treatment field. Deep inspiration breath-hold (DIBH) techniques reduce dose to coronary structures, but are resource intensive and may not be tolerated by all patients. The aim of this study was to evaluate a simple multi-leaf collimator (MLC) modification technique with respect to target coverage and organ-at-risk sparing. METHODS: Forty nine patients with left-sided breast cancer, planned with a simultaneous integrated boost technique were retrospectively replanned with additional shielding of the LAD...
September 9, 2016: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/27727065/acute-toxicity-and-tumor-response-in-locally-advanced-rectal-cancer-after-preoperative-chemoradiation-therapy-with-shortening-of-the-overall-treatment-time-using-intensity-modulated-radiation-therapy-with-simultaneous-integrated-boost-a-phase-2-trial
#10
Jasna But-Hadzic, Franc Anderluh, Erik Brecelj, Ibrahim Edhemovic, Ajra Secerov-Ermenc, Rihard Hudej, Ana Jeromen, Miran Kozelj, Bojan Krebs, Irena Oblak, Mirko Omejc, Andrej Vogrin, Vaneja Velenik
BACKGROUND AND PURPOSE: This phase 2 study investigated the efficacy and safety of preoperative intensity modulated radiation therapy with a simultaneous integrated boost (IMRT-SIB) without dose escalation, concomitant with standard capecitabine chemotherapy in locally advanced rectal cancer. METHODS AND MATERIALS: Between January 2014 and March 2015, 51 patients with operable stage II-III rectal adenocarcinoma received preoperative IMRT with pelvic dose of 41.8 Gy and simultaneously delivered 46...
December 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27721262/the-efficacy-and-safety-of-simultaneous-integrated-boost-intensity-modulated-radiation-therapy-for-esophageal-squamous-cell-carcinoma-in-chinese-population-a-single-institution-experience
#11
Yujin Xu, Zhun Wang, Guan Liu, Xiao Zheng, Yuezhen Wang, Wei Feng, Xiaojing Lai, Xia Zhou, Pu Li, Honglian Ma, Jin Wang, Xiao Hu, Ming Chen
PURPOSE: To evaluate the clinical efficacy and toxicity of simultaneous integrated boost intensity-modulated radiotherapy (SIB-IMRT) in patients with esophageal squamous cell carcinoma (ESCC) in Chinese population. PATIENTS AND METHODS: Patients with ESCC, who received SIB-IMRT from September 2011 to January 2013 were retrospectively analyzed. The SIB-IMRT plans were designed to deliver primary gross tumor volume at 60-64.4 Gy in 28-30 fractions, and planning target volume at 50...
October 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/27716877/simultaneous-integrated-bilateral-breast-and-nodal-irradiation-with-volumetric-arc-therapy-case-report-and-literature-review
#12
Alba Fiorentino, Umberto Tebano, Ruggero Ruggieri, Francesco Ricchetti, Filippo Alongi
AIM: For simultaneous bilateral breast cancer (SBBC) treatment, conventional radiotherapy (RT) has a number of critical shortcomings. Thus, the usefulness of volumetric arc therapy (VMAT) for SBBC is undeniable. CASE REPORT: A 34-year-old woman with SBBC received neoadjuvant chemotherapy followed by breast-conserving surgery and bilateral lymph node dissection. Given the conservative surgery and the nodal involvement after neoadjuvant chemotherapy, bilateral adjuvant RT to the breasts and regional nodes with doses of 50 Gy in 25 fractions and a simultaneous integrated boost (SIB) of 60 Gy to the surgical bed was proposed...
September 27, 2016: Tumori
https://www.readbyqxmd.com/read/27706947/simultaneous-integrated-boost-sib-of-the-parametrium-and-cervix-in-radiotherapy-for-uterine-cervical-carcinoma-a-dosimetric-study-using-a-new-alternative-approach
#13
Jen-Yu Cheng, Eng-Yen Huang, Shun-Neng Hsu, Chong-Jong Wang
OBJECTIVE: To compare the dose distributions of intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT) using the simultaneous integrated boost (SIB) technique to that of the traditional midline-block (MB) technique for boosting the parametrium in patients with cervical cancer. METHODS: Treatment plans using VMAT or IMRT with the SIB technique (VMAT-SIB and IMRT-SIB) and IMRT followed by the MB technique (IMRT-MB) were generated for each of 10 cervical cancer patients...
October 6, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27698590/dosimetric-feasibility-of-an-off-breast-isocenter-technique-for-whole-breast-cancer-radiotherapy
#14
Juan-Francisco Calvo-Ortega, Sandra Moragues, Miquel Pozo, Joan Casals
AIM: To investigate the viability of placing the treatment isocenter at the patient midline for breast cancer radiotherapy in order to avoid the risk of collisions during image-guided setup and treatment delivery. BACKGROUND: The use of kilovoltage orthogonal setup images has spread in last years in breast radiotherapy. There is a potential risk of an imaging system-patient collision when the isocenter is laterally placed. MATERIALS AND METHODS: Twenty IMRT plans designed by placing the isocenter within the breast volume ("plan_ref"), were retrospectively replanned by shifting the isocenter at the patient's midline ("plan_off-breast")...
November 2016: Reports of Practical Oncology and Radiotherapy
https://www.readbyqxmd.com/read/27692518/treatment-planning-strategy-for-whole-brain-radiotherapy-with-hippocampal-sparing-and-simultaneous-integrated-boost-for-multiple-brain-metastases-using-intensity-modulated-arc-therapy
#15
Damodar Pokhrel, Sumit Sood, Christopher McClinton, Xinglei Shen, Christopher Lominska, Habeeb Saleh, Rajeev Badkul, Hongyu Jiang, Melissa Mitchell, Fen Wang
PURPOSE: To retrospectively evaluate the accuracy, plan quality and efficiency of intensity-modulated arc therapy (IMAT) for hippocampal sparing whole-brain radiotherapy (HS-WBRT) with simultaneous integrated boost (SIB) in patients with multiple brain metastases (m-BM). MATERIALS AND METHODS: A total of 5 patients with m-BM were retrospectively replanned for HS-WBRT with SIB using IMAT treatment planning. The hippocampus was contoured on diagnostic T1-weighted magnetic resonance imaging (MRI) which had been fused with the planning CT image set...
September 27, 2016: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/27685108/simultaneously-integrated-boost-sib-spares-oar-and-reduces-treatment-time-in-locally-advanced-cervical-cancer
#16
Christine H Feng, Yasmin Hasan, Malgorzata Kopec, Hania A Al-Hallaq
We performed a dosimetric comparison of sequential IMRT (sIMRT) and simul-taneously 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)...
2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/27681762/head-and-neck-margin-reduction-with-adaptive-radiation-therapy-robustness-of-treatment-plans-against-anatomy-changes
#17
Simon van Kranen, Olga Hamming-Vrieze, Annelisa Wolf, Eugène Damen, Marcel van Herk, Jan-Jakob Sonke
PURPOSE: We set out to investigate loss of target coverage from anatomy changes in head and neck cancer patients as a function of applied safety margins and to verify a cone beam computed tomography (CBCT)-based adaptive strategy with an average patient anatomy to overcome possible target underdosage. METHODS AND MATERIALS: For 19 oropharyngeal cancer patients, volumetric modulated arc therapy treatment plans (2 arcs; simultaneous integrated boost, 70 and 54.25 Gy; 35 fractions) were automatically optimized with uniform clinical target volume (CTV)-to-planning target volume margins of 5, 3, and 0 mm...
November 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27681755/simultaneous-integrated-boost-volumetric-modulated-arc-therapy-in-the-postoperative-treatment-of-high-risk-to-intermediate-risk-endometrial-cancer-results-of-ada-ii-phase-1-2-trial
#18
Gabriella Macchia, Savino Cilla, Francesco Deodato, Anna Ianiro, Francesco Legge, Martina Marucci, Silvia Cammelli, Anna Myriam Perrone, Pierandrea De Iaco, Maria Antonietta Gambacorta, Rosa Autorino, Vincenzo Valentini, Alessio G Morganti, Gabriella Ferrandina
PURPOSE: A prospective phase 1-2 clinical trial aimed at determining the recommended postoperative dose of simultaneous integrated boost volumetric modulated arc therapy (SIB-VMAT) in a large series of patients with high-risk and intermediate-risk endometrial cancer (HIR-EC) is presented. The study also evaluated the association between rate and severity of toxicity and comorbidities and the clinical outcomes. METHODS AND MATERIALS: Two SIB-VMAT dose levels were investigated for boost to the vaginal vault, whereas the pelvic lymph nodes were always treated with 45 Gy...
November 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675854/phase-1-trial-of-preoperative-image-guided-intensity-modulated-proton-radiation-therapy-impt-with-simultaneously-integrated-boost-to-the-high-risk-margin-for-retroperitoneal-sarcomas
#19
T F DeLaney, Y L E Chen, J A Adams, S Hickey, D Wang, E H Baldini, K Bernstein, B Y Yeap, S M Hahn, G P Nielsen, E Choy, J T Mullen, S S Yoon
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27675659/safety-of-dose-escalation-by-simultaneous-integrated-boosting-radiation-dose-in-unresectable-stage-iii-non-small-cell-lung-cancer
#20
Q Zhang, X Fu
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
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