Results 31 to 40 of about 4,431 (152)

Perbandingan Verifikasi Akurasi Posisi Pasien Radioterapi Secara Manual dan Semiotomatis Berbasis Citra DRR/EPID

Indonesian Journal of Cancer, 2016
Radiotherapy is one of common treatment modality for Nasopharyngeal Cancer. The development of intensity modulated radiotherapy (IMRT technique) gives satisfactory results in the nasopharyngeal cancer treatment, both clinically and dosimetry.
SUSI NOFRIDIANITA
doaj   +1 more source

EPID – a useful interfraction QC tool

Polish Journal of Medical Physics and Engineering, 2019
Abstract Biomedical accelerators used in radiotherapy are equipped with detector arrays which are commonly used to obtain the image of patient position during the treatment session. These devices use both kilovolt and megavolt x-ray beams.
Klimas, Aleksandra, Grządziel, Aleksandra, Płaza, Dominika, Bekman, Barbara, Woźniak, Bożena, Dolla, Łukasz, Osewski, Wojciech, Paściak, Paweł, Wendykier, Jacek, Ślosarek, Krzysztof   +9 more
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Dose calibration of EPIDs for segmented IMRT dosimetry [PDF]

Journal of Applied Clinical Medical Physics, 2014
The purpose of this study was to investigate the dose response of amorphous silicon (a‐Si) electronic portal imaging devices (EPIDs) under different acquisition settings for both open jaw defined fields and segmented intensity‐modulated radiation therapy (IMRT) fields. Four different EPIDs were used.
Deshpande, S, Xing, A, Holloway, L, Metcalfe, P, Vial, P   +4 more
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EPID-Based Setup Error Correction in Head and Neck Radiotherapy [PDF]

Iranian Journal of Medical Physics
Introduction: This study introduces and evaluates a novel optimized averaging method for Electronic Portal Imaging Device (EPID)-based setup corrections, comparing it with conventional approaches.
Mohamad Pursamimi, Mahdi Ghorbani, Mehdi Khosravi, Seyed Mohammad Hosseini, Ahmad Shakeri, Sibusiso Mdletshe   +5 more
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Super-resolution imaging in a multiple layer EPID [PDF]

Biomedical Physics & Engineering Express, 2017
A new portal imager consisting of four vertically stacked conventional electronic portal imaging device (EPID) layers has been constructed in pursuit of improved detective quantum efficiency (DQE). We hypothesize that super-resolution (SR) imaging can also be achieved in such a system by shifting each layer laterally by half a pixel relative to the ...
Haijian, Chen, Joerg, Rottmann, Stephen Sf, Yip, Daniel, Morf, Rony, Füglistaller, Josh, Star-Lack, George, Zentai, Ross, Berbeco   +7 more
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Evaluation of Perkin Elmer Amorphous Silicon Electronic Portal Imaging Device for Small Photon Field Dosimetry [PDF]

Journal of Biomedical Physics and Engineering
Background: Electronic portal imaging devices (EPIDs) are applied to measure the dose and verify patients’ position.Objective: The present study aims to evaluate the performance of EPID for measuring dosimetric parameters in small photon fields.Material ...
Mohammad Haghparast, Wrya Parwaie, Mohsen Bakhshandeh, Nina Tuncel, Seied Rabi Mahdavi   +4 more
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TREATMENT OF OSTEOPOROSIS IN REAL CLINICAL PRACTICE: FREQUENCY OF PRESCRIPTIONS AND THERAPY ADHERENCE WITHIN THE FIRST YEAR AFTER OSTEOPOROTIC FRACTURE

Научно-практическая ревматология, 2011
Objective: to estimate the frequency of prescription for antiosteoporotic agents in real clinical practice and treatment adherence within a year after experienced low-trauma osteoporotic fracture (LOF). Subjects and methods.
O. V. Dobrovolskaya, N. V. Toroptsova, O. A. Nikitinskaya, N. V. Demin   +3 more
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EVALUATION STUDY FOR ELECTRONIC PORTAL IMAGER SYSTEM DEVICE (EPID) AS QUALITY ASSURANCE AND DOSIMETRY TOOL FOR MEDICAL LINEAR ACCELERATOR MACHINE [PDF]

Assiut University Journal of Multidisciplinary Scientific Research, 2020
Portal imager system now is widely attached as verification system in many models from linear accelerator due to may be used for treatment verification instead of film in as new ear for radiotherapy.
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Sarcoidosis pulmonar y cáncer de mama, a propósito de un caso [PDF]

Revista SOCAMPAR, 2020
Las enfermedades pulmonares intersticiales difusas constituyen un grupo heterogéneo de entidades clinicopatológicas que tienen manifestaciones clínicas, radiológicas y espirométricas similares, afectando de forma difusa a la vía aérea inferior.
Gutiérrez González N, Ceballos Romero JC, Martínez Jiménez AJ, García Guerra JA, Hurtado Fuentes Á, Martínez Villar C, Sánchez SimónTalero R   +6 more
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An Analysis of Quality Assurance for Intensity-modulated Radiation Therapy and Volumetric Modulated Arc Therapy Treatment Plans Using Two Dosimetric Methods: The arcCHECK System and EPIbeam Based Dosimetric Approach

Journal of Medical Physics
Aim: The current study is to assess and compare the performance of an electronic portal imaging device (EPID)-based dosimetry system electronic portal imaging beam (EPIbeam) and a three-dimensional (3D) diode array system (ArcCHECK) using various gamma ...
Ajay Katake, Lalit Kumar, Balbir Singh, Amit Sharma, Deepak Basandrai   +4 more
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