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https://www.readbyqxmd.com/read/28227009/a-machine-learning-framework-for-auto-classification-of-imaging-system-exams-in-hospital-setting-for-utilization-optimization
#1
Meru A Patil, Ravindra B Patil, P Krishnamoorthy, Jacob John, Meru A Patil, Ravindra B Patil, P Krishnamoorthy, Jacob John, Meru A Patil, Jacob John, Ravindra B Patil, P Krishnamoorthy
In clinical environment, Interventional X-Ray (IXR) system is used on various anatomies and for various types of the procedures. It is important to classify correctly each exam of IXR system into respective procedures and/or assign to correct anatomy. This classification enhances productivity of the system in terms of better scheduling of the Cath lab, also provides means to perform device usage/revenue forecast of the system by hospital management and focus on targeted treatment planning for a disease/anatomy...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224184/irritable-temperament-profile-prevails-among-patients-with-boxer-fractures
#2
A Taşkesen, I Demirkale, N Taşkesen, M Okumuş, D Ö Can
OBJECTIVE: The purpose of this prospective study was to examine the temperament dimensions of the patients with boxer fracture and compare them with age- and sex-matched controls. METHODS: We performed a prospective analysis investigating affective temperaments of the 102 patients with boxer fractures and compared them with 100 sex- and age-matched controls that were referred to the emergency department due to incidental soft-tissue trauma. Affective temperament of the patients was evaluated by Memphis, Pisa, Paris, and San Diego-Auto questionnaire (TEMPS-A)...
February 21, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28202228/cross-institutional-knowledge-based-planning-kbp-implementation-and-its-performance-comparison-to-auto-planning-engine-ape
#3
Binbin Wu, Martijn Kusters, Martina Kunze-Busch, Tim Dijkema, Todd McNutt, Giuseppe Sanguineti, Karl Bzdusek, Anatoly Dritschilo, Dalong Pang
BACKGROUND AND PURPOSE: To investigate (1) whether a plan library established at one institution can be applied for another institution's knowledge-based planning (KBP); (2) the performance of cross-institutional KBP compared to Auto-Planning Engine (APE). MATERIAL AND METHODS: Radboud University Medical Center (RUMC) provided 35 oropharyngeal cancer patients (68Gy to PTV(68) and 50.3Gy to PTV(50.3)) with clinically-delivered and comparative APE plans. The Johns Hopkins University (JHU) contributed a three-dose-level plan library consisting of 179 clinically-delivered plans...
February 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28196288/clinical-adequacy-assessment-of-auto-contours-for-prostate-imrt-with-meaningful-endpoints
#4
Hamidreza Nourzadeh, William T Watkins, Mahmoud Ahmad, Cheukkai Hui, David Schlesinger, Jeffrey V Siebers
PURPOSE: To determine if radiation treatment plans created based on auto-segmented (AS) regions-of-interest (ROI)s are clinically equivalent to plans created based on manually segmented ROIs, where equivalence is evaluated using probabilistic dosimetric metrics and probabilistic biological endpoints for prostate IMRT. METHOD AND MATERIALS: Manually drawn contours and auto-segmented ROIs were created for 167 CT image sets acquired from 19 prostate patients. Auto-segmentation was performed utilizing Pinnacle's Smart Probabilistic Image Contouring Engine...
February 14, 2017: Medical Physics
https://www.readbyqxmd.com/read/28194514/a-prospective-comparison-between-auto-registration-and-manual-registration-of-real-time-ultrasound-with-mr-images-for-percutaneous-ablation-or-biopsy-of-hepatic-lesions
#5
Dong Ik Cha, Min Woo Lee, Kyoung Doo Song, Young-Taek Oh, Ja-Yeon Jeong, Jung-Woo Chang, Jiwon Ryu, Kyong Joon Lee, Jaeil Kim, Won-Chul Bang, Dong Kuk Shin, Sung Jin Choi, Dalkwon Koh, Bong Koo Seo, Kyunga Kim
PURPOSE: To compare the accuracy and required time for image fusion of real-time ultrasound (US) with pre-procedural magnetic resonance (MR) images between positioning auto-registration and manual registration for percutaneous radiofrequency ablation or biopsy of hepatic lesions. METHODS: This prospective study was approved by the institutional review board, and all patients gave written informed consent. Twenty-two patients (male/female, n = 18/n = 4; age, 61...
February 13, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28143623/fully-automated-treatment-planning-of-spinal-metastases-a-comparison-to-manual-planning-of-volumetric-modulated-arc-therapy-for-conventionally-fractionated-irradiation
#6
Daniel Buergy, Abdul Wahab M Sharfo, Ben J M Heijmen, Peter W J Voet, Sebastiaan Breedveld, Frederik Wenz, Frank Lohr, Florian Stieler
BACKGROUND: Planning for Volumetric Modulated Arc Therapy (VMAT) may be time consuming and its use is limited by available staff resources. Automated multicriterial treatment planning can eliminate this bottleneck. We compared automatically created (auto) VMAT plans generated by Erasmus-iCycle to manually created VMAT plans for treatment of spinal metastases. METHODS: Forty-two targets in 32 patients were analyzed. Lungs and kidneys were defined as organs at risk (OARs)...
January 31, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28126329/head-and-neck-target-delineation-using-a-novel-pet-automatic-segmentation-algorithm
#7
B Berthon, M Evans, C Marshall, N Palaniappan, N Cole, V Jayaprakasam, T Rackley, E Spezi
PURPOSE: To evaluate the feasibility and impact of using a novel advanced PET auto-segmentation method in Head and Neck (H&N) radiotherapy treatment (RT) planning. METHODS: ATLAAS, Automatic decision Tree-based Learning Algorithm for Advanced Segmentation, previously developed and validated on pre-clinical data, was applied to (18)F-FDG-PET/CT scans of 20 H&N patients undergoing Intensity Modulated Radiation Therapy. Primary Gross Tumour Volumes (GTVs) manually delineated on CT/MRI scans (GTVpCT/MRI), together with ATLAAS-generated contours (GTVpATLAAS) were used to derive the RT planning GTV (GTVpfinal)...
January 23, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28067870/a-single-center-s-experience-using-four-different-front-line-mobilization-strategies-in-lymphoma-patients-planned-to-undergo-autologous-hematopoietic-cell-transplantation
#8
B M Haverkos, Y Huang, P Elder, L O'Donnell, D Scholl, B Whittaker, S Vasu, S Penza, L A Andritsos, S M Devine, S M Jaglowski
In an otherwise eligible patient with relapsed lymphoma, inadequate mobilization of hematopoietic stem cells (HSCs) is a limiting factor to proceeding with an autologous hematopoietic cell transplantation (auto-HCT). Multiple strategies have been used to mobilize an adequate number of HSCs with no obvious front-line strategy. We report a single institutional experience mobilizing HSCs using four different approaches in lymphoma patients. We prospectively collected mobilization outcomes on patients planned to undergo auto-HCT at Ohio State University...
January 9, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28048691/tu-ab-brc-11-moving-a-gpu-opencl-based-monte-carlo-mc-dose-engine-towards-routine-clinical-use-automatic-beam-commissioning-and-efficient-source-sampling
#9
Z Tian, Y Li, M Folkerts, S Jiang, X Jia
PURPOSE: We have previously developed a GPU-OpenCL-based MC dose engine named goMC with built-in analytical linac beam model. To move goMC towards routine clinical use, we have developed an automatic beam-commissioning method, and an efficient source sampling strategy to facilitate dose calculations for real treatment plans. METHODS: Our commissioning method is to automatically adjust the relative weights among the sub-sources, through an optimization process minimizing the discrepancies between calculated dose and measurements...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048553/su-c-brb-03-cross-institutional-validation-of-an-ultrafast-automatic-planning-platform-for-breast-irradiation
#10
T Li, Y Sheng, V Lockamy, P Anne, N Simone, Q J Wu, Y Yu
PURPOSE: Recently an ultrafast automatic planning system for breast irradiation using tangential beams was developed by modeling relationships between patient anatomy and achieved dose distribution. This study evaluates the performance of this system when applied to a different patient population and dose calculation algorithm. METHODS: The system and its anatomy-to-dose models was developed at institution A based on 20 cases, which were planned using manual fluence painting technique and calculated WITH heterogeneity correction...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048487/su-c-bra-03-an-automated-and-quick-contour-errordetection-for-auto-segmentation-in-online-adaptive-radiotherapy
#11
J Zhang, O Ates, X Li
PURPOSE: To develop a tool that can quickly and automatically assess contour quality generated from auto segmentation during online adaptive replanning. METHODS: Due to the strict time requirement of online replanning and lack of 'ground truth' contours in daily images, our method starts with assessing image registration accuracy focusing on the surface of the organ in question. Several metrics tightly related to registration accuracy including Jacobian maps, contours shell deformation, and voxel-based root mean square (RMS) analysis were computed...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048431/su-f-t-466-an-enhanced-daily-quality-assurance-process-for-a-six-degrees-of-freedom-robotic-table
#12
E Kremmel, L Doyle, Y Yu, A Harrison
PURPOSE: A Varian PerfectPitch six degrees of freedom robotic table necessitates daily quality assurance (QA). Therapists were credentialed for this QA procedure which was easily incorporated into the existing daily warmup process. This procedure adds depth to TG-142 requirements without additional morning time costs. METHODS: This PerfectPitch table QA introduces a consistent rotation of the QUASAR™ Penta-Guide phantom and requires automatic table corrections through image fusions...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048350/su-f-p-30-clinical-assessment-of-auto-beam-hold-triggered-by-fiducial-localization-during-prostate-rapidarc-delivery
#13
P Atkinson, Q Chen
PURPOSE: To assess the clinical efficacy of auto beam hold during prostate RapidArc delivery, triggered by fiducial localization on kV imaging with a Varian True Beam. METHODS: Prostate patients with four gold fiducials were candidates in this study. Daily setup was accomplished by aligning to fiducials using orthogonal kV imaging. During RapidArc delivery, a kV image was automatically acquired with a momentary beam hold every 60 degrees of gantry rotation. The position of each fiducial was identified by a search algorithm and compared to a predetermined 1...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048279/su-c-207b-05-tissue-segmentation-of-computed-tomography-images-using-a-random-forest-algorithm-a-feasibility-study
#14
D Polan, S Brady, R Kaufman
PURPOSE: Develop an automated Random Forest algorithm for tissue segmentation of CT examinations. METHODS: Seven materials were classified for segmentation: background, lung/internal gas, fat, muscle, solid organ parenchyma, blood/contrast, and bone using Matlab and the Trainable Weka Segmentation (TWS) plugin of FIJI. The following classifier feature filters of TWS were investigated: minimum, maximum, mean, and variance each evaluated over a pixel radius of 2n, (n = 0-4)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048170/mo-g-201-03-deep-learning-based-prediction-of-achievable-dose-for-personalizing-inverse-treatment-planning
#15
M Mardani Korani, P Dong, L Xing
PURPOSE: Inverse planning starts with prescribed dose or DVHs. The time/effort spent on obtaining a clinically acceptable plan and, more importantly, the quality of the resultant treatment plan depends critically on the prescription. The present work aims to facilitate the treatment planning workflow by predicting the achievable dose distribution based on a dataset of quality plans designed for past patients. METHODS: A novel learning-empowered approach is developed that predicts achievable 3D dose volume for a new patient based on the geometrical features of the contoured anatomical-scan...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048157/mo-d-brc-02-auto-planning
#16
P Xia
Treatment planning is a central part of radiation therapy, including delineation in tumor volumes and critical organs, setting treatment goals of prescription doses to the tumor targets and tolerance doses to the critical organs, and finally generation of treatment plans to meet the treatment goals. National groups like RTOG have led the effort to standardize treatment goals of the prescription doses to the tumor targets and tolerance doses to the critical organs based on accumulated knowledge from decades of abundant clinical trial experience...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048133/su-f-j-113-multi-atlas-based-automatic-organ-segmentation-for-lung-radiotherapy-planning
#17
J Kim, J Han, S Ailawadi, J Baker, A Hsia, Z Xu, S Ryu
PURPOSE: Normal organ segmentation is one time-consuming and labor-intensive step for lung radiotherapy treatment planning. The aim of this study is to evaluate the performance of a multi-atlas based segmentation approach for automatic organs at risk (OAR) delineation. METHODS: Fifteen Lung stereotactic body radiation therapy patients were randomly selected. Planning CT images and OAR contours of the heart - HT, aorta - AO, vena cava - VC, pulmonary trunk - PT, and esophagus - ES were exported and used as reference and atlas sets...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047992/su-f-t-94-plan2pdf-a-software-tool-for-automatic-plan-report-for-philips-pinnacle-tps
#18
C Wu
PURPOSE: To implement an automatic electronic PDF plan reporting tool for Philips Pinnacle treatment planning system (TPS) METHODS: An electronic treatment plan reporting software is developed by us to enable fully automatic PDF report from Pinnacle TPS to external EMR programs such as MOSAIQ. The tool is named "plan2pdf". plan2pdf is implemented using Pinnacle scripts, Java and UNIX shell scripts, without any external program needed. plan2pdf supports full auto-mode and manual mode reporting...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047965/tu-h-campus-jep2-05-can-automatic-delineation-of-cardiac-substructures-on-noncontrast-ct-be-used-for-cardiac-toxicity-analysis
#19
Y Luo, Z Liao, W Jiang, D Gomez, R Williamson, L Court, J Yang
PURPOSE: To evaluate the feasibility of using an automatic segmentation tool to delineate cardiac substructures from computed tomography (CT) images for cardiac toxicity analysis for non-small cell lung cancer (NSCLC) patients after radiotherapy. METHODS: A multi-atlas segmentation tool developed in-house was used to delineate eleven cardiac substructures including the whole heart, four heart chambers, and six greater vessels automatically from the averaged 4DCT planning images for 49 NSCLC patients...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047964/su-f-t-354-evaluation-of-new-features-of-two-commercial-automated-treatment-planning-systems
#20
X Han, W Hu, X Chen
PURPOSE: To evaluate the individual and combined performance of Auto-Planning and RapidPlan for IMRT plans applied to locally advanced cervical cancer. METHODS: A cohort of 10 patients previously treated with IMRT technique were selected for this study. 10 plans (AP) were generated with Pinnacle version 9.10 based on on single template, and only one optimization cycle was allowed for each plan. 10 sets of patient specific DVH prediction were generated with RapidPlan (Eclipse 13...
June 2016: Medical Physics
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