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https://www.readbyqxmd.com/read/27898748/-investigating-the-clinical-applicability-of-ebt2-self-developing-films
#1
Zsuzsánna Zongor, Dalma Béla, Réka Király, Gábor Stelczer, Tibor Major, Csilla Pesznyák
The purpose of the study was to investigate the physical properties of the EBT2 radiochromic films and define the conditions of its clinical applicability. We irradiated the films with different treatment techniques 3D conformal (3DCRT), intensity-modulated (IMRT) and stereotactic body radiotherapy with arc therapy (SBRT), and then compared the data with the dose distribution exported from the treatment planning system (Eclipse). Two film analysis softwares were investigated for the comparison: PTW Mephysto and FilmQA Pro...
November 29, 2016: Magyar Onkologia
https://www.readbyqxmd.com/read/27891440/radiation-therapy-in-paediatric-orbital-granulocytic-sarcomas-experience-from-a-tertiary-cancer-center
#2
Sushmita Pathy, Bhanu Prasad Venkatesulu, Supriya Mallick, Subhash Chander
INTRODUCTION: Orbital Granulocytic Sarcoma (OGS) is an uncommon manifestation associated with haematological malignancies. Chemotherapy remains the cornerstone of the treatment. The role of radiation is not well-defined. AIM: To evaluate the effect of radiation in OGS and to define an optimal dose for achieving adequate local control. MATERIALS AND METHODS: This was a retrospective analysis of 11 patients who received radiation therapy to orbit for Granulocytic Sarcoma (GS) between 2007 and 2014 at a tertiary cancer center in India...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27832799/estimation-of-second-cancer-risk-after-radiotherapy-for-rectal-cancer-comparison-of-3d-conformal-radiotherapy-and-volumetric-modulated-arc-therapy-using-different-high-dose-fractionation-schemes
#3
Daniel R Zwahlen, Laura I Bischoff, Günther Gruber, Marcin Sumila, Uwe Schneider
PURPOSE: To investigate second cancer risk (SCR) comparing volumetric modulated arc therapy (VMAT) and 3D conformal radiotherapy (3DCRT) with different high dose fractionation schemes. METHODS: VMAT and 3DCRT virtual treatment plans for 25 patients previously treated with radiotherapy for rectal cancer were evaluated retrospectively. Doses prescribed were 25 × 1.8 Gy and 5 × 5 Gy, respectively. SCR was estimated using a carcinogenesis model and epidemiological data for carcinoma and sarcoma induction...
November 10, 2016: Radiation Oncology
https://www.readbyqxmd.com/read/27778117/a-comparison-of-clinical-outcomes-between-three-dimensional-conformal-radiotherapy-and-intensity-modulated-radiotherapy-for-prostate-cancer
#4
Takuya Shimizuguchi, Keiji Nihei, Tomoyuki Okano, Yumiko Machitori, Kei Ito, Katsuyuki Karasawa
BACKGROUND: Intensity-modulated radiation therapy (IMRT) reduces the dose delivered to organs at risk. However, there have been few direct comparisons of IMRT with conventional three-dimensional conformal radiotherapy (3DCRT). The aim of this study was to evaluate the clinical benefit of IMRT in terms of toxicity and biochemical control. METHODS: The medical records of 203 consecutive patients with localized to non-metastatic (stage T1a-T3bN0M0) prostate cancer between 2007 and 2011 were retrospectively reviewed...
October 24, 2016: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27764778/intensity-modulated-radiation-therapy-achieves-better-local-control-compared-to-three-dimensional-conformal-radiation-therapy-for-t4-stage-nasopharyngeal-carcinoma
#5
Jenny Ling-Yu Chen, Yu-Sen Huang, Sung-Hsin Kuo, Ruey-Long Hong, Jenq-Yuh Ko, Pei-Jen Lou, Chun-Wei Wang
PURPOSE: To examine the survival outcomes and late toxicity profiles of three-dimensional conformal radiation therapy (3DCRT) vs. intensity-modulated radiation therapy (IMRT) for patients with nasopharyngeal carcinoma (NPC). METHODS: Three hundred and seventy-four patients with newly diagnosed, non-metastatic, NPC who were curatively treated with 3DCRT between 2004 and 2006 and 481 patients treated with IMRT between 2007 and 2009 were analyzed. Patients were categorized as having advanced-stage disease (stage III, IVA, and IVB disease; n = 709) or early-stage disease (stage I and II; n = 146)...
October 18, 2016: Oncotarget
https://www.readbyqxmd.com/read/27764060/adjuvant-external-beam-radiotherapy-after-therapeutic-groin-lymphadenectomy-for-patients-with-melanoma-a-dosimetric-comparison-of-three-dimensional-conformal-and-intensity-modulated-radiotherapy-techniques
#6
Gerard Adams, Matthew Foote, Simon Brown, Bryan Burmeister
Radiotherapy after lymph node dissection is recommended in high-risk melanoma cases. The aim of this study is to assess whether intensity-modulated radiotherapy (IMRT) offers advantages over three-dimensional conformal radiotherapy (3DCRT) in the groin nodal basin. Fifteen consecutively treated patients (5 3DCRT and 10 IMRT) were selected. Optimized theoretical plans using the other modality were created - enabling direct comparisons of 3DCRT and IMRT. Target volume and organs at risk constraints were assessed as achieved or as having minor (≤5%) or major (>5%) deviations...
October 19, 2016: Melanoma Research
https://www.readbyqxmd.com/read/27752904/influence-of-position-and-radiation-technique-on-organs-at-risk-in-radiotherapy-of-rectal-cancer
#7
Jun-Feng Wang, Hui Li, Hua Xiong, He Huang, Yan-Mei Zou
The influence of the position and radiation technique on the organs at risk (OARs) in radiotherapy of rectal cancer was evaluated. The relationship between the volume of irradiated small bowel (VSB) and acute bowel toxicity was determined. A total of 97 cases of rectal cancer were retrospectively randomized to receive radiotherapy with the designated treatment positions and radiation plans. Among 64 patients in the supine position, 32 patients were given three-dimensional conformal radiotherapy (3DCR) and 32 patients were subjected to intensity-modulated radiation therapy (IMRT) respectively...
October 2016: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/27751618/bladder-radiotherapy-treatment-a-retrospective-comparison-of-3-dimensional-conformal-radiotherapy-intensity-modulated-radiation-therapy-and-volumetric-modulated-arc-therapy-plans
#8
Katia Pasciuti, Shrinivas Kuthpady, Anne Anderson, Bronagh Best, Saleem Waqar, Subhra Chowdhury
To examine tumor׳s and organ׳s response when different radiotherapy plan techniques are used. Ten patients with confirmed bladder tumors were first treated using 3-dimensional conformal radiotherapy (3DCRT) and subsequently the original plans were re-optimized using the intensity-modulated radiation treatment (IMRT) and volumetric-modulated arc therapy (VMAT)-techniques. Targets coverage in terms of conformity and homogeneity index, TCP, and organs׳ dose limits, including integral dose analysis were evaluated...
October 14, 2016: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/27751605/acute-toxicity-with-intensity-modulated-radiotherapy-versus-3-dimensional-conformal-radiotherapy-during-preoperative-chemoradiation-for-locally-advanced-rectal-cancer
#9
Shu Y Ng, Kathryn L Colborn, Lajhem Cambridge, Carla Hajj, T Jonathan Yang, Abraham J Wu, Karyn A Goodman
BACKGROUND AND PURPOSE: We examined acute toxicity profiles and outcomes among rectal cancer patients treated with pre-operative chemoradiation using intensity modulated radiotherapy (IMRT) or 3-dimensional conformal radiotherapy (3DCRT) to identify predictive clinical factors associated with increased acute toxicity. MATERIAL AND METHODS: We retrospectively reviewed records of 301 consecutive rectal cancer patients treated with pre-operative chemotherapy and radiotherapy (median dose 5000cGy) at our institution between 2007 and 2014...
October 14, 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/27738080/a-retrospective-comparison-of-outcome-and-toxicity-of-preoperative-image-guided-intensity-modulated-radiotherapy-versus-conventional-pelvic-radiotherapy-for-locally-advanced-rectal-carcinoma
#10
Chun-Ming Huang, Ming-Yii Huang, Hsiang-Lin Tsai, Ching-Wen Huang, Cheng-Jen Ma, Chih-Hung Lin, Chih-Jen Huang, Jaw-Yuan Wang
The aim of the study was to compare clinical outcomes and toxicity between 3D conformal radiotherapy (3DCRT) and image-guided intensity-modulated radiotherapy (IG-IMRT) administered through helical tomotherapy in locally advanced rectal cancer (LARC) patients receiving preoperative chemoradiotherapy. We reviewed 144 patients with Stage II-III rectal cancer receiving preoperative fluoropyrimidine-based chemoradiotherapy followed by radical resection. Tumor responses following chemoradiotherapy were evaluated using the Dworak tumor regression grade (TRG)...
October 13, 2016: Journal of Radiation Research
https://www.readbyqxmd.com/read/27716267/economic-evaluation-of-treatments-for-patients-with-localized-prostate-cancer-in-europe-a-systematic-review
#11
Virginia Becerra, Mónica Ávila, Jorge Jimenez, Laura Cortes-Sanabria, Yolanda Pardo, Olatz Garin, Angels Pont, Jordi Alonso, Francesc Cots, Montse Ferrer
BACKGROUND: Our objective was to assess the efficiency of treatments in patients with localized prostate cancer, by synthesizing available evidence from European economic evaluations through systematic review. METHODS: Articles published 2000-2015 were searched in MEDLINE, EMBASE and NHS EED (Prospero protocol CRD42015022063). Two authors independently selected studies for inclusion and extracted the data. A third reviewer resolved discrepancies. We included European economic evaluations or cost comparison studies, of any modality of surgery or radiotherapy treatments, regardless the comparator/s...
October 3, 2016: BMC Health Services Research
https://www.readbyqxmd.com/read/27675795/comparative-effectiveness-analysis-of-3dcrt-versus-intensity-modulated-radiation-therapy-in-a-prospective-multicenter-cohort-of-breast-cancer-patients
#12
R Jagsi, K A Griffith, J M Moran, M M Matuszak, M Feng, R Marsh, T P Boike, I S Grills, G S Gustafson, D K Heimburger, T S Nurushev, J D Radawski, E M Walker, J A Hayman, L J Pierce
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27674673/postoperative-3d-conformal-radiation-therapy-3dcrt-for-patients-with-piii-a-n2-non-small-cell-lung-cancer-nsclc-after-complete-resection-and-adjuvant-chemotherapy-interim-analysis-of-an-ongoing-prospective-phase-3-study
#13
Z Hui, Y Men, J Liang, X Wang, J Lv, Z Zhou, Q Feng, Z Xiao, D Chen, H Zhang, W Yin, L Wang
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27674339/postoperative-radiation-therapy-for-cervical-cancer-three-dimensional-conformal-radiation-therapy-3dcrt-versus-intensity-modulated-radiation-therapy-imrt
#14
M Kurokawa, Y Iwai, G Togasaki, A Kanazawa, M Watanabe Nemoto, R Harada, H Kobayashi, H Usui, A Mitsuhashi, T Uno
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27673913/dose-escalation-with-an-intensity-modulated-radiation-therapy-technique-in-15-to-28-fractions-is-better-tolerated-than-are-standard-doses-of-3dcrt-for-lapc
#15
L E Colbert, S Moningi, A S Chadha, R A Wolff, G R Varadhachary, J B Fleming, M Katz, C M Taniguchi, P Das, S Krishnan, E J Koay, C H Crane
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27648283/conformal-orbit-sparing-radiation-therapy-a-treatment-option-for-advanced-skin-cancer-of-the-parotid-and-ear-region
#16
Heath Foley, Shane Hopley, Elizabeth Brown, Anne Bernard, Matthew Foote
INTRODUCTION: New surgical methods have enabled resection of previously in-operable tumours in the region of the parotid gland and ear. This has translated to deeper target volumes being treated with adjuvant radiotherapy. Due to the limitations of existing conformal techniques, alternative planning approaches are required to cover the target volume with appropriate sparing of adjacent critical structures. Although intensity modulated radiation therapy (IMRT) may be able to achieve these goals compared with the existing conformal method, a new orbital sparing radiation therapy (OSRaT) technique was evaluated as an alternative conformal planning process...
September 2016: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/27648281/toxicity-and-dosimetric-analysis-of-non-small-cell-lung-cancer-patients-undergoing-radiotherapy-with-4dct-and-image-guided-intensity-modulated-radiotherapy-a-regional-centre-s-experience
#17
Gareth C Livingston, Andrew J Last, Thomas P Shakespeare, Patrick M Dwyer, Justin Westhuyzen, Michael J McKay, Lisa Connors, Stephanie Leader, Stuart Greenham
INTRODUCTION: For patients receiving radiotherapy for locally advance non-small cell lung cancer (NSCLC), the probability of experiencing severe radiation pneumonitis (RP) appears to rise with an increase in radiation received by the lungs. Intensity modulated radiotherapy (IMRT) provides the ability to reduce planned doses to healthy organs at risk (OAR) and can potentially reduce treatment-related side effects. This study reports toxicity outcomes and provides a dosimetric comparison with three-dimensional conformal radiotherapy (3DCRT)...
September 2016: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/27633817/role-of-belly-board-device-in-the-age-of-intensity-modulated-radiotherapy-for-pelvic-irradiation
#18
Neil C Estabrook, Gregory K Bartlett, Julia J Compton, Higinia R Cardenes, Indra J Das
Small bowel dose often represents a limiting factor for radiation treatment of pelvic malignancies. To reduce small bowel toxicity, a belly board device (BBD) with a prone position is often recommended. Intensity modulated radiotherapy (IMRT) could reduce dose to small bowel based on the desired dose-volume constraints. We investigated the efficacy of BBD in conjunction with IMRT. A total of 11 consecutive patients with the diagnosis of rectal cancer, who were candidates for definitive therapy, were selected...
September 12, 2016: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/27629865/comparison-of-three-dimensional-conformal-radiation-therapy-intensity-modulated-radiation-therapy-and-volumetric-modulated-arc-therapy-in-the-treatment-of-cervical-esophageal-carcinoma
#19
Hao Yang, Cong Feng, Bo-Ning Cai, Jun Yang, Hai-Xia Liu, Lin Ma
The aim of this study was to evaluate the effectiveness and toxicities of three-dimensional conformal radiation therapy (3DCRT), intensity-modulated radiation therapy (IMRT), and volumetric-modulated arc therapy (VMAT) in patients with cervical esophageal cancer. Specifically, we asked whether technological advances conferred an advantage with respect to the clinical curative effect. Seventy-eight patients with cervical esophageal cancer treated with definitive radiotherapy with or without concomitant chemotherapy at our institution between 2007 and 2014 were enrolled in the study: 26 received 3DCRT, 30 were treated with IMRT, and 22 underwent VMAT...
September 15, 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/27628491/intensity-modulated-radiation-therapy-may-improve-local-regional-tumor-control-for-locally-advanced-non-small-cell-lung-cancer-compared-with-three-dimensional-conformal-radiation-therapy
#20
Jingbo Wang, Zongmei Zhou, Jun Liang, Qinfu Feng, Zefen Xiao, Zhouguang Hui, Xiaozhen Wang, Jima Lv, Dongfu Chen, Hongxing Zhang, Zhe Ji, Jianzhong Cao, Lipin Liu, Wei Jiang, Yu Men, Cai Xu, Jiangrong Dai, Weibo Yin, Luhua Wang
BACKGROUND: Consistent results are lacking as regards the comparative effectiveness of intensity-modulated radiotherapy (IMRT) versus three-dimensional conformal radiotherapy (3DCRT) in patients with locally advanced non-small cell lung cancer (LA-NSCLC). PATIENTS AND METHODS: Patients treated with definitive radiotherapy (RT) between 2002 and 2010 were retrospectively reviewed. Overall survival (OS), local-regional progression-free survival (LRPFS), distant metastasis-free survival (DMFS), and progression-free survival (PFS) were compared among patients irradiated with different techniques...
September 14, 2016: Oncologist
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