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https://www.readbyqxmd.com/read/29139208/a-knowledge-based-approach-to-automated-planning-for-hepatocellular-carcinoma
#1
Yujie Zhang, Tingting Li, Han Xiao, Weixing Ji, Ming Guo, Zhaochong Zeng, Jianying Zhang
PURPOSE: To build a knowledge-based model of liver cancer for Auto-Planning, a function in Pinnacle, which is used as an automated inverse intensity modulated radiation therapy (IMRT) planning system. METHODS AND MATERIALS: Fifty Tomotherapy patients were enrolled to extract the dose-volume histograms (DVHs) information and construct the protocol for Auto-Planning model. Twenty more patients were chosen additionally to test the model. Manual planning and automatic planning were performed blindly for all twenty test patients with the same machine and treatment planning system...
November 15, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29110926/study-for-reducing-lung-dose-of-upper-thoracic-esophageal-cancer-radiotherapy-by-auto-planning-volumetric-modulated-arc-therapy-vs-intensity-modulated-radiation-therapy
#2
Hua Chen, Hao Wang, Hengle Gu, Yan Shao, Xuwei Cai, Xiaolong Fu, Zhiyong Xu
This study aimed to investigate the dosimetric differences and lung sparing between volumetric-modulated arc therapy (VMAT) and intensity-modulated radiation therapy (IMRT) in the treatment of upper thoracic esophageal cancer with T3N0M0 for preoperative radiotherapy by auto-planning (AP). Sixteen patient cases diagnosed with upper thoracic esophageal cancer T3N0M0 for preoperative radiotherapy were retrospectively studied, and 3 plans were generated for each patient: full arc VMAT AP plan with double arcs, partial arc VMAT AP plan with 6 partial arcs, and conventional IMRT AP plan...
October 27, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/29110925/a-novel-imrt-planning-study-by-using-the-fixed-jaw-method-in-the-treatment-of-peripheral-lung-cancer-with-mediastinal-lymph-node-metastasis
#3
Hao Wang, Hua Chen, Hengle Gu, Yan Shao, Xuwei Cai, Xiaolong Fu, Zhiyong Xu
Intensity-modulated radiotherapy (IMRT) is an important technology in cancer radiotherapy. In the current planning system, such as in the Pinnacle(3) system, jaw positions are automatically set to cover all target volumes, and many medical centers in developing countries are not equipped with linear accelerators with a jaw tracing function. As solitary lesions are often located in patients, the resulting radiation leakage and transmission increase the dose exposure in surrounding critical organs, although blocked by multileaf collimator (MLC) leaves...
October 27, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/29080045/correction-to-automated-imrt-planning-in-pinnacle-a%C3%A2-study-in-head-and-neck-cancer
#4
J M A M Kusters, K Bzdusek, P Kumar, P G M van Kollenburg, M C Kunze-Busch, M Wendling, T Dijkema, J H A M Kaanders
Correction to: Strahlenther Onkol 2017 https://doi.org/10.1007/s00066-017-1187-9 Unfortunately, parts of the 'Materials and Methods section' and a sentence in the 'Discussion section' had to be corrected.On page 3, left column, the complete first paragraph was corrected and now reads as follows:Auto-P.
October 27, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28969706/improved-plan-quality-with-automated-radiotherapy-planning-for-whole-brain-with-hippocampus-sparing-a-comparison-to-the-rtog-0933-trial
#5
J Krayenbuehl, M Di Martino, M Guckenberger, N Andratschke
BACKGROUND: Whole-brain radiation therapy (WBRT) with hippocampus sparing (HS) has been investigated by the radiation oncology working group (RTOG) 0933 trial for patients with multiple brain metastases. They showed a decrease of adverse neurocognitive effects with HS WBRT compared to WBRT alone. With the development of automated treatment planning system (aTPS) in the last years, a standardization of the plan quality at a high level was achieved. The goal of this study was to evaluate the feasibility of using an aTPS for the treatment of HS WBRT and see if the RTOG 0933 dose constraints could be achieved and improved...
October 2, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28963779/automatic-segmentation-of-the-clinical-target-volume-and-organs-at-risk-in-the-planning-ct-for-rectal-cancer-using-deep-dilated-convolutional-neural-networks
#6
Kuo Men, Jianrong Dai, Yexiong Li
PURPOSE: Delineation of the clinical target volume (CTV) and organs at risk (OARs) is very important for radiotherapy but is time-consuming and prone to inter-observer variation. Here, we proposed a novel deep dilated convolutional neural network (DDCNN)-based method for fast and consistent auto-segmentation of these structures. METHODS: Our DDCNN method was an end-to-end architecture enabling fast training and testing. Specifically, it employed a novel multiple-scale convolutional architecture to extract multiple-scale context features in the early layers, which contain the original information on fine texture and boundaries and which are very useful for accurate auto-segmentation...
September 30, 2017: Medical Physics
https://www.readbyqxmd.com/read/28952230/how-can-we-effectively-address-the-paraneoplastic-dermatomyositis-diagnosis-risk-factors-and-treatment-options
#7
Ioannis Zerdes, Maria Tolia, Michail Nikolaou, Nikolaos Tsoukalas, Louloudenia Velentza, Jiannis Hajiioannou, Michail Mitsis, George Kyrgias
PURPOSE: Dermatomyositis (DM) represents an auto-immune inflammatory myopathy. In this review, we analyzed the incidence of DM as a clinical manifestation highlighting the peculiar clinical and treatment characteristics of this disease when occurring in the context of different malignancies. METHODS: A systematic literature review was performed based on database search in PubMed/Medline and included English articles until December 2016. RESULTS: In up to 20% of cases DM appears as a paraneoplastic syndrome associated with multiple malignancies such as ovarian, breast, prostate, lung, nasopharyngeal and colorectal cancer, and non-Hodgkin lymphomas...
July 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28945107/herpes-zoster-incidence-and-cost-in-patients-receiving-autologous-hematopoietic-stem-cell-transplant
#8
Jianbin Mao, Jeffrey T McPheeters, Dongmu Zhang, Camilo J Acosta, Lyn Finelli
OBJECTIVE: Among patients receiving autologous hematopoietic stem cell transplant (Auto-HSCT), we estimated the incidence of herpes zoster (HZ), compared health care costs among patients with and without HZ, and evaluated antiviral prophylaxis (AP) use. RESEARCH DESIGN AND METHODS: We conducted a retrospective study using data from a large health plan to identify patients ≥18 years with ≥1 claim for an Auto-HSCT procedure during 2006-2011 (N = 2,530). Patients were followed from date of Auto-HSCT until risk-end date, defined as development of HZ, end of enrollment, death, or 12/31/2011...
September 25, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28943512/prevalence-of-znt8-antibody-in-turkish-children-and-adolescents-with-new-onset-type-1-diabetes
#9
Selin Elmaoğulları, Seyit Ahmet Uçaktürk, Şehri Elbeg, Esra Döğer, Meltem Tayfun, Fatih Gürbüz, Aysun Bideci
OBJECTIVE: Zinc transporter 8 protein (ZnT8) is a transmembranic protein organizing the zinc transfer to insulin vesicles. Antibodies formed against ZnT8 (ZnT8A) are regarded as an independent autoimmunity demonstrator in type 1 diabetes (T1D) diagnosis Investigation of ZnT8ab prevalence in Turkish children with new onset T1D was planned in this study. METHODS: 84 patients between 1-18 years of age diagnosed with T1D between February 2015- March 2016 and the control group consisting of 50 healthy children without any autoimmune diseases were included in the study...
September 25, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28925817/using-multiple-classifiers-for-predicting-the-risk-of-endovascular-aortic-aneurysm-repair-re-intervention-through-hybrid-feature-selection
#10
Omneya Attallah, Alan Karthikesalingam, Peter Je Holt, Matthew M Thompson, Rob Sayers, Matthew J Bown, Eddie C Choke, Xianghong Ma
Feature selection is essential in medical area; however, its process becomes complicated with the presence of censoring which is the unique character of survival analysis. Most survival feature selection methods are based on Cox's proportional hazard model, though machine learning classifiers are preferred. They are less employed in survival analysis due to censoring which prevents them from directly being used to survival data. Among the few work that employed machine learning classifiers, partial logistic artificial neural network with auto-relevance determination is a well-known method that deals with censoring and perform feature selection for survival data...
September 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28881055/individual-healthcare-plan-for-allergic-children-at-school-lessons-from-a-2015-2016-school-year-survey
#11
Guillaume Pouessel, Stépanie Lejeune, Marie-Pierre Dupond, Annie Renard, Camille Fallot, Antoine Deschildre
BACKGROUND: The individual healthcare plan (IHP) was implemented in schools in France in 2003 to improve management of allergic children. Our objectives were to assess the practical aspects of IHP (excluding asthma) and allergic reactions occurring at school. METHODS: Prospective study conducted in the North Department (France) during the 2015/2016 school year. Two questionnaires were developed: one for the school doctors (n = 67) and one for the school principals (n = 2372)...
September 7, 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/28865314/safety-analysis-of-urban-arterials-at-the-meso-level
#12
Jia Li, Xuesong Wang
Urban arterials form the main structure of street networks. They typically have multiple lanes, high traffic volume, and high crash frequency. Classical crash prediction models investigate the relationship between arterial characteristics and traffic safety by treating road segments and intersections as isolated units. This micro-level analysis does not work when examining urban arterial crashes because signal spacing is typically short for urban arterials, and there are interactions between intersections and road segments that classical models do not accommodate...
November 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28854714/routine-serum-thyroid-stimulating-hormone-testing-optimizing-pre-conception-health-or-generating-toxic-knowledge
#13
Abha Maheshwari, Priya Bhide, Jyotsna Pundir, Siladitya Bhattacharya
Monitoring subclinical hypothyroidism (SCH) in women is believed to be important in terms of preventing overt hypothyroidism and optimizing the health and cognitive development of their children. Current systematic reviews have suggested an association between maternal SCH and adverse obstetric and neonatal outcomes. However, initiating the administration of thyroxine during pregnancy has failed to demonstrate appreciable health benefits. Hence there are calls by professional endocrine societies for optimizing serum thyroid-stimulating hormone (TSH) levels pre-conception...
September 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28840767/automatic-treatment-planning-facilitates-fast-generation-of-high-quality-treatment-plans-for-esophageal-cancer
#14
Christian Rønn Hansen, Morten Nielsen, Anders Smedegaard Bertelsen, Irene Hazell, Eva Holtved, Ruta Zukauskaite, Jon Kroll Bjerregaard, Carsten Brink, Uffe Bernchou
BACKGROUND: The quality of radiotherapy planning has improved substantially in the last decade with the introduction of intensity modulated radiotherapy. The purpose of this study was to analyze the plan quality and efficacy of automatically (AU) generated VMAT plans for inoperable esophageal cancer patients. MATERIAL AND METHODS: Thirty-two consecutive inoperable patients with esophageal cancer originally treated with manually (MA) generated volumetric modulated arc therapy (VMAT) plans were retrospectively replanned using an auto-planning engine...
November 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28793876/patient-satisfaction-with-extavipro%C3%A2-30g-a-new-auto-injector-for-administering-interferon-%C3%AE-1b-in-multiple-sclerosis-results-from-a-real-world-observational-exchange-study
#15
Frank A Hoffmann, Anastasiya Trenova, Miguel A Llaneza, Johannes Fischer, Giacomo Lus, Dorothea von Bredow, Núria Lara, Elaine Lam, Marlies Van Hoef, Rajesh Bakshi
BACKGROUND: Patients with multiple sclerosis (MS) receiving long-term, subcutaneous interferon β-1b (IFN β-1b; Extavia®) often experience injection-site reactions and injection-site pain, which together with other side-effects (such as flu-like symptoms) result in suboptimal treatment compliance/adherence. The EXCHANGE study evaluated patient satisfaction with IFN β-1b treatment, administered using ExtaviPro™ 30G, a new auto-injector, in a real-world setting. METHODS: This 26-week, open-label, prospective, non-interventional, observational, multi-country multi-centre study enrolled patients with MS who had been treated with IFN β-1b or other disease-modifying therapies with a self-administered auto-injector for ≥3 months and who were planned to switch to IFN β-1b treatment administered using ExtaviPro™ 30G as part of routine clinical care...
August 9, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28770294/automated-imrt-planning-in-pinnacle-a%C3%A2-study-in-head-and-neck-cancer
#16
J M A M Kusters, K Bzdusek, P Kumar, P G M van Kollenburg, M C Kunze-Busch, M Wendling, T Dijkema, J H A M Kaanders
PURPOSE: This study evaluates the performance and planning efficacy of the Auto-Planning (AP) module in the clinical version of Pinnacle 9.10 (Philips Radiation Oncology Systems, Fitchburg, WI, USA). METHODS AND MATERIALS: Twenty automated intensity-modulated radiotherapy (IMRT) plans were compared with the original manually planned clinical IMRT plans from patients with oropharyngeal cancer. RESULTS: Auto-Planning with IMRT offers similar coverage of the planning target volume as the original manually planned clinical plans, as well as better sparing of the contralateral parotid gland, contralateral submandibular gland, larynx, mandible, and brainstem...
August 2, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28768920/neuronavigation-guided-frameless-stereoelectroencephalography-seeg
#17
Ayataka Fujimoto, Tohru Okanishi, Sotaro Kanai, Keishiro Sato, Mitsuyo Nishimura, Hideo Enoki
Stereoelectroencephalography (SEEG) is an invasive surgical procedure used to identify epileptogenic zones. The combination of both subdural grids and depth electrodes (DEs) is currently used for invasive intracranial monitoring in many epilepsy centers. To perform DE implantation, some centers use frame-based stereotactic techniques and others use stereotactic robotic techniques. However, not all epilepsy centers have access to these tools. We hypothesized that DE implantation using a neuronavigation system can be utilized for subsequent epilepsy surgery...
September 15, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28754289/dosimetric-benefits-of-automation-in-the-treatment-of-lower-thoracic-esophageal-cancer-is-manual-planning-still-an-alternative-option
#18
Xiadong Li, Lu Wang, Jiahao Wang, Xu Han, Bing Xia, Shixiu Wu, Weigang Hu
This study aimed to design automated volumetric-modulated arc therapy (VMAT) plans in Pinnacle auto-planning and compare it with manual plans for patients with lower thoracic esophageal cancer (EC). Thirty patients with lower thoracic EC were randomly selected for replanning VMAT plans using auto-planning in Pinnacle treatment planning system (TPS) version 9.10. Historical plans of these patients were then compared. Dose-volume histogram (DVH) statistics, dose uniformity, and dose homogeneity were analyzed to evaluate treatment plans...
July 25, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28731267/heuristic-knowledge-based-planning-for-single-isocenter-stereotactic-radiosurgery-to-multiple-brain-metastases
#19
Benjamin P Ziemer, Parag Sanghvi, Jona Hattangadi-Gluth, Kevin L Moore
PURPOSE: Single-isocenter, volumetric-modulated arc therapy (VMAT) stereotactic radiosurgery (SRS) for multiple brain metastases (multimets) can deliver highly conformal dose distributions and reduce overall patient treatment time compared to other techniques. However, treatment planning for multimet cases is highly complex due to variability in numbers and sizes of brain metastases, as well as their relative proximity to organs-at-risk (OARs). The purpose of this study was to automate the VMAT planning of multimet cases through a knowledge-based planning (KBP) approach that adapts single-target SRS dose predictions to multiple target predictions...
October 2017: Medical Physics
https://www.readbyqxmd.com/read/28692818/establishing-an-autologous-versus-allogeneic-hematopoietic-cell-transplant-program-in-nations-with-emerging-economies
#20
REVIEW
Naeem A Chaudhri, Mahmoud Aljurf, Fahad I Almohareb, Hazzaa A Alzahrani, Qaiser Bashir, Bipin Savani, Vikas Gupta, Shahrukh K Hashmi
More than 70,000 hematopoietic cell transplants are currently performed each year, and these continue to increase every year. However, there is a significant variation in the number of absolute transplants and transplant rates between centers, countries, and global regions. The prospect for emerging countries to develop a hematopoietic cell transplantation (HCT) program, as well as to decide on whether autologous HCT (auto-HCT) or allogeneic HCT (allo-HCT) should be established to start with, relies heavily on factors that can explain differences between these two procedures...
July 3, 2017: Hematology/oncology and Stem Cell Therapy
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