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https://www.readbyqxmd.com/read/29455424/hypo-fractionated-stereotactic-radiation-therapy-for-lung-malignancies-by-means-of-helical-tomotherapy-report-of-feasibility-by-a-single-center-experience
#1
Vanessa Figlia, Rosario Mazzola, Francesco Cuccia, Filippo Alongi, Gianluca Mortellaro, Daniela Cespuglio, Teresa Cucchiara, Giuseppina Iacoviello, Vito Valenti, Massimo Molino, Francesco Verderame, Domenica Matranga, Antonio Lo Casto, Giuseppe Ferrera
BACKGROUND: Several experiences in the literature report SBRT as an effective treatment option for medically inoperable early stage non-small cell lung cancer (NSCLC) and oligometastatic disease. The optimal fractionation schedules and total dose remain controversial. In this study, we evaluated the safety in terms of toxicity and efficacy of using of 8-10 fractions schedules with Helical Tomotherapy (HT) for primary and metastatic lung lesions. METHODS: Between March 2014 and May 2016, a total of 39 patients (median age 72 years, range 26-91) were treated with HT-SBRT for malignant lung lesions: 22 patients with early stage NSCLC, 17 with oligometastases...
February 17, 2018: La Radiologia Medica
https://www.readbyqxmd.com/read/29452865/stereotactic-radiosurgery-for-multiple-brain-metastases-results-of-multicenter-benchmark-planning-studies
#2
David J Eaton, Jonathan Lee, Ian Paddick
PURPOSE: Stereotactic radiosurgery is indicated for treatment of multiple brain metastases. Various treatment platforms are available, but most comparisons are limited to single-center studies. As part of a national commissioning program, benchmark planning cases were completed by 21 clinical centers, providing a unique dataset of current practice across a large number of providers and equipment platforms. METHODS AND MATERIALS: Two brain metastases cases were provided, with images and structures predrawn, involving 3 and 7 lesions...
December 30, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29442173/hypofractionated-postmastectomy-radiotherapy-with-helical-tomotherapy-in-patients-with-immediate-breast-reconstruction-dosimetric-results-and-acute-intermediate-toxicity-evaluation
#3
Roberto Orecchia, Damaris Patricia Rojas, Federica Cattani, Rosalinda Ricotti, Luigi Santoro, Anna Morra, Raffaella Cambria, Rosa Luraschi, Samantha Dicuonzo, Sara Ronchi, Alessia Surgo, Veronica Dell' Acqua, Paolo Veronesi, Francesca De Lorenzi, Cristiana Fodor, Maria Cristina Leonardi, Barbara Alicja Jereczek-Fossa
The aim of this study was to evaluate the dosimetry and toxicity of hypofractionation in postmastectomy radiotherapy (PMRT) with intensity-modulated radiotherapy (IMRT) in breast cancer (BC) patients. Stage II-III BC patients with implant-based immediate breast reconstruction received PMRT to the chest wall (CW) and to the infra/supraclavicular nodal region (NR) using a 15-fraction schedule (2.67 Gy/fraction) and helical IMRT (Tomotherapy®System, Accuray Incorporated, Sunnyvale, CA). A score was assigned to each treatment plan in terms of planning target volume (PTV) coverage of CW and NR and the sparing of the organs at risk (OARs)...
February 13, 2018: Medical Oncology
https://www.readbyqxmd.com/read/29441419/modern-intensity-modulated-radiotherapy-with-image-guidance-allows-low-toxicity-rates-and-good-local-control-in-chemoradiotherapy-for-anal-cancer-patients
#4
Berardino De Bari, Laëtitia Lestrade, Alessandra Franzetti-Pellanda, Raphael Jumeau, Maira Biggiogero, Melpomeni Kountouri, Oscar Matzinger, Raymond Miralbell, Jean Bourhis, Mahmut Ozsahin, Thomas Zilli
PURPOSE: To report outcomes of a population of anal cancer patients treated with modern intensity-modulated radiotherapy and daily image-guided radiotherapy techniques. METHODS: We analyzed data of 155 patients consecutively treated with intensity-modulated radiotherapy +/- chemotherapy in three radiotherapy departments. One hundred twenty-two patients presented a stage II-IIIA disease. Chemotherapy was administered in 138 patients, mainly using mitomycin C and 5-fluorouracil (n = 81)...
February 13, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29427312/evaluation-of-surface-and-shallow-depth-dose-reductions-using-a-superflab-bolus-during-conventional-and-advanced-external-beam-radiotherapy
#5
Jihyung Yoon, Yibo Xie, Rui Zhang
The purpose of this study was to evaluate a methodology to reduce scatter and leakage radiations to patients' surface and shallow depths during conventional and advanced external beam radiotherapy. Superflab boluses of different thicknesses were placed on top of a stack of solid water phantoms, and the bolus effect on surface and shallow depth doses for both open and intensity-modulated radiotherapy (IMRT) beams was evaluated using thermoluminescent dosimeters and ion chamber measurements. Contralateral breast dose reduction caused by the bolus was evaluated by delivering clinical postmastectomy radiotherapy (PMRT) plans to an anthropomorphic phantom...
February 10, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29417728/comparison-of-four-techniques-for-spine-stereotactic-body-radiotherapy-dosimetric-and-efficiency-analysis
#6
Saif Aljabab, Balamurugan Vellayappan, Eric Vandervoort, Jamie Bahm, Robert Zohr, John Sinclair, Jean-Michel Caudrelier, Janos Szanto, Shawn Malone
PURPOSE: The aim of this study is to compare the dosimetric differences between four techniques for spine stereotactic body radiotherapy (SBRT): CyberKnife (CK), volumetric modulated arc therapy (VMAT), and helical tomotherapy (HT) with dynamic jaws (HT-D) and fixed jaws (HT-F). MATERIALS/METHODS: Data from 10 patients were utilized. All patients were planned for 24 Gy in two fractions, with the primary objectives being: (a) restricting the maximum dose to the cord to ≤ 17 Gy and/or cauda equina to ≤ 20 Gy, and (b) to maximize the clinical target volume (CTV) to receive the prescribed dose...
February 7, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29413852/abstract-id-222-clinical-implementation-of-a-monte-carlo-based-qa-platform-for-validation-of-tomotherapy-and-cyberknife-treatment-plans
#7
Antoine Wagner, Younes Jourani, Frederic Crop, Thomas Lacornerie, François Dubus, Erwann Rault, Pauline Comte, Julien Laffarguette, Thierry Sarrazin, Nick Reynaert
INTRODUCTION: This work describes the clinical implementation of a Monte Carlo based platform for treatment plan validation for Tomotherapy and Cyberknife, including a semi-automatic plan evaluation module based on dose constraints for organs-at-risk (OAR). METHODS: The Monte Carlo-based platform Moderato [1] is based on BEAMnrc/DOSXYZnrc and allows for automated re-calculation of doses planned with Tomotherapy and Cyberknife techniques. The Prescription/Validation module generates a set of dose constraints based on the anatomical region and fractionation scheme considered...
January 2018: Physica Medica: PM
https://www.readbyqxmd.com/read/29405307/feasibility-of-real-time-motion-management-with-helical-tomotherapy
#8
Eric Schnarr, Matt Beneke, Dylan Casey, Edward Chao, Jonathan Chappelow, Andrea Cox, Doug Henderson, Petr Jordan, Etienne Lessard, Dan Lucas, Andriy Myronenko, Calvin Maurer
PURPOSE: This study investigates the potential application of image-based motion tracking and real-time motion correction to a helical tomotherapy system. METHODS: A kV X ray imaging system was added to a helical tomotherapy system, mounted 90 degrees offset from the MV treatment beam, and an optical camera system was mounted above the foot of the couch. This experimental system tracks target motion by acquiring an X ray image every few seconds during gantry rotation...
February 5, 2018: Medical Physics
https://www.readbyqxmd.com/read/29395854/total-body-irradiation-using-helical-tomotherapy%C3%A2-treatment-technique-dosimetric-results-and-initial-clinical-experience
#9
V Sarradin, L Simon, A Huynh, J Gilhodes, T Filleron, F Izar
PURPOSE: Helical TomoTherapy® allows precise and homogeneous tumour coverage and excellent sparing of organs at risk. We present here our treatment technique, dosimetric results, and our first clinical data for patients receiving total body irradiation as part of the conditioning regimen before hematopoietic stem cell transplantation. PATIENTS AND METHODS: The cohort consisted of 11 patients who were treated in our institution between August 2014 and January 2016...
January 25, 2018: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/29372290/patient-positioning-in-head-and-neck-cancer-setup-variations-and-safety-margins-in-helical-tomotherapy
#10
Christina Leitzen, Timo Wilhelm-Buchstab, Thomas Müdder, Martina Heimann, David Koch, Christopher Schmeel, Birgit Simon, Sabina Stumpf, Susanne Vornholt, Stephan Garbe, Fred Röhner, Felix Schoroth, Hans Heinz Schild, Heinrich Schüller
OBJECTIVE: To evaluate the interfractional variations of patient positioning during intensity-modulated radiotherapy (IMRT) with helical tomotherapy in head and neck cancer and to calculate the required safety margins (sm) for bony landmarks resulting from the necessary table adjustments. MATERIALS AND METHODS: In all, 15 patients with head and neck cancer were irradiated using the Hi-Art II tomotherapy system between April and September 2016. Before therapy sessions, patient position was frequently checked by megavolt computed tomography (MV-CT)...
January 25, 2018: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29350548/use-of-helical-tomotherapy-in-locally-advanced-and-or-metastatic-breast-cancer-for-locoregional-treatment
#11
Laura Thery, Alexandre Arsene-Henry, Susan Carroll, Dominique Peurien, Louis Bazire, Magalie Robilliard, Alain Fourquet, Youlia M Kirova
PURPOSE: Helical tomotherapy (HT) is a new promising tool whose use remains to be studied. This work assesses its impact for local irradiation in terms of side effects, as well as tumour control in locally advanced (LABC) and metastatic breast cancer (MBC). METHODS: We retrospectively reviewed data of 66 patients with LABC and MBC. Patients received standard fractionated radiotherapy by HT, with or without concurrent systemic treatment. RESULTS: The median age was 60 years (28-77)...
January 19, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29333123/evaluation-of-deformable-image-registration-dir-methods-for-dose-accumulation-in-nasopharyngeal-cancer-patients-during-radiotherapy
#12
Wannapha Nobnop, Imjai Chitapanarux, Hudsaleark Neamin, Somsak Wanwilairat, Vicharn Lorvidhaya, Taweap Sanghangthum
Introduction: Deformable image registration (DIR) is used to modify structures according to anatomical changes for observing the dosimetric effect. In this study, megavoltage computed tomography (MVCT) images were used to generate cumulative doses for nasopharyngeal cancer (NPC) patients by various DIR methods. The performance of the multiple DIR methods was analysed, and the impact of dose accumulation was assessed. Patients and methods: The study consisted of five NPC patients treated with a helical tomotherapy unit...
December 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/29330392/haploidentical-hematopoietic-sct-using-helical-tomotherapy-for-total-body-irradiation-and-targeted-dose-boost-in-patients-with-high-risk-refractory-acute-lymphoblastic-leukemia
#13
Zujun Jiang, Junsong Jia, Chunyan Yue, Yan Pang, Zenghui Liu, Ling Ouyang, Hongbo Li, Jinjian Zhang, Ting Wen, Jing Li, Zhiqiang Li, Yan Wang, Yang Xiao, Haowen Xiao
A novel conditioning regimen using helical tomotherapy (HT) was developed to deliver 10 Gy for total body irradiation (TBI) and simultaneously augment dose to 12 Gy for targeted dose boost to total marrow, central nervous system leukemia, and extramedullary disease sites in patients with high-risk or relapsed/refractory acute lymphoblastic leukemia (ALL) receiving haploidentical allogeneic hematopoietic stem cell transplantation (allo-HSCT). Fourteen patients were included, eight of these patients were in first complete remission (CR1), one was in CR2, one had a partial response and four patients had refractory disease at transplantation...
January 12, 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29299141/optimization-of-the-margin-expanded-from-the-clinical-to-the-planned-target-volume-during-intensity-modulated-radiotherapy-for-nasopharyngeal-carcinoma
#14
Wang Fangzheng, Sun Quanquan, Jiang Chuner, Ye Zhimin, Yang Shuangyan, Yu Huanhuan, Shi Jianfang, Masoto Sakamoto, Qin Weifeng, Fu Zhenfu, Jiang Yangming, Wang Yuezhen
During the radiotherapy process, the emergence of set-up errors is nearly inevitable. Because set-up errors were not detected and corrected daily, planned target volumes were formed by expanding the clinical target volume according to each unit's experience. We optimized the margins of clinical and planned target volumes during administration of intensity-modulated radiotherapy for nasopharyngeal carcinoma. A total of 72 patients newly diagnosed with non-metastatic nasopharyngeal carcinoma and treated with Tomotherapy were prospectively enrolled in the study...
December 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/29277799/long-term-outcomes-of-a-dose-reduction-trial-to-decrease-late-gastrointestinal-toxicity-in-patients-with-prostate-cancer-receiving-soft-tissue-matched-image-guided-intensity-modulated-radiotherapy
#15
Naomi Sasaki, Hideya Yamazaki, Daisuke Shimizu, Gen Suzuki, Koji Masui, Satoaki Nakamura, Haruumi Okabe, Tatsuyuki Nishikawa, Ken Yoshida
BACKGROUND/AIM: We experienced an unexpected high incidence of gastrointestinal (GI) toxicity in patients undergoing image-guided intensity-modulated radiotherapy (IG-IMRT) using helical tomotherapy in our initial 2.2 Gy/fraction schedule for prostate cancer; hence, a dose-reduction trial from 2.2 Gy to 2 Gy/fraction was conducted using modified planning target volume (PTV) contouring. PATIENTS AND METHODS: We compared 130 patients treated using 2.2 Gy/fraction (Group A) and 144 treated using the 2 Gy/fraction (Group B) with modified PTV (excluding rectal volume) with a median follow-up period of 62 months...
January 2018: Anticancer Research
https://www.readbyqxmd.com/read/29236275/multidisciplinary-management-of-a-giant-cervico-mediastinal-liposarcoma-a-case-report-and-literature-review
#16
Andrea Galli, Leone Giordano, Piergiorgio Muriana, Alessandro Bandiera, Giampiero Negri, Piero Zannini, Mario Bussi
Liposarcomas are rare mesenchymal tumors that usually develop in lower extremities or retroperitoneum; cervico-mediastinal presentation is quite uncommon. These neoplasms are commonly diagnosed at a late stage because they remain asymptomatic until nearby structures are compressed. This makes radical excision particularly challenging. To date, alternative chemoradiotherapy protocols have not yet been standardized. We report a case of a 55-year-old man with a right laterocervical mass and without substantial symptoms...
December 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29207865/prognostic-value-of-nodal-suvmax-of-18f-fdg-pet-ct-in-nasopharyngeal-carcinoma-treated-with-intensity-modulated-radiotherapy
#17
So Jung Lee, Chul-Seoung Kay, Yeon-Sil Kim, Seok Hyun Son, Myungsoo Kim, Sea-Won Lee, Hye Jin Kang
PURPOSE: To investigate the predictive role of maximum standardized uptake value (SUVmax) of 2-[18F]fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) in nasopharyngeal cancer patients treated with intensity-modulated radiotherapy (IMRT). MATERIALS AND METHODS: Between October 2006 and April 2016, 53 patients were treated with IMRT in two institutions and their PET/CT at the time of diagnosis was reviewed. The SUVmax of their nasopharyngeal lesions and metastatic lymph nodes (LN) was recorded...
December 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/29204527/outcomes-and-toxicity-of-313-prostate-cancer-patients-receiving-helical-tomotherapy-after-radical-prostatectomy
#18
Lindsay Jensen, Bertram Yuh, Jeffrey Y C Wong, Timothy Schultheiss, Jonathan Cheng, Nora Ruel, Przemyslaw Twardowski, Sagus Sampath
Purpose: There are limited long-term data on patients treated with image guided intensity modulated radiation therapy (IG-IMRT) for prostate cancer recurrence or high-risk disease features after radical prostatectomy. We report single-institution results for patients treated with IG-IMRT and identify variables associated with outcome. Methods and materials: This is a retrospective chart review consisting of 313 consecutive patients who were treated with adjuvant or salvage IG-IMRT from 2004 to 2013...
October 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/29197746/proton-therapy-for-locally-advanced-breast-cancer-a-systematic-review-of-the-literature
#19
REVIEW
Emmanuel Kammerer, Jennifer Le Guevelou, Abdulhamid Chaikh, Serge Danhier, Julien Geffrelot, Christelle Levy, Eric Saloux, Jean-Louis Habrand, Juliette Thariat
BACKGROUND: Radiation therapy plays a major role in the management of adjuvant breast cancer with nodal involvement, with an iatrogenic increase of cardio-vascular risk. Photon therapy, even with intensity modulation, has the downsides of high mean heart dose and heterogeneous target coverage, particularly in the case of internal mammary irradiation. This systematic review of the literature aims to evaluate proton therapy in locally advanced breast cancer. MATERIAL AND METHODS: PubMed was searched for original full-text articles with the following search terms: «Proton Therapy» and «Breast Cancer»...
February 2018: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/29179501/the-heterogeneous-ctv-ptv-margins-should-be-given-for-different-parts-of-tumors-during-tomotherapy
#20
Ying Tong, Guanzhong Gong, Jinhu Chen, Jie Lu, Tonghai Liu, Pinjing Cheng, Yong Yin
Objective: The purpose of this study was to evaluate CTV-PTV margins of tumors for tomotherapy. Methods: Setup errors were analyzed for 151 patients receiving helical tomotherapy treatment. 53 patients had head and neck tumors, 45 had thoracic tumors, 20 had abdominal tumors, and 33 had pelvic tumors. The setup errors were calculated in six directions, i.e. +X (left), -X (right), +Y (head), -Y (foot), +Z (ventral), and -Z (dorsal), after Megavoltage CT (MVCT) images were registered to simulation CT images...
October 24, 2017: Oncotarget
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