نتایج جستجو برای: electronic portal imaging device

تعداد نتایج: 1308923  

Journal: :iranian journal of radiation research 0
a. jomehzadeh medical physics department, isfahan university of medical sciences, isfahan, iran p. shokrani medical physics department, isfahan university of medical sciences, isfahan, iran m. mohammadi medical physics department, hamadan university of medical sciences, hamadan, iran a. amouheidari radiation oncology department, isfahan milad hospital, isfahan, iran

background: electronic portal imaging devices (epids) play an important role in radiation therapy portal imaging, geometric and dosimetric verifications. a successful utilization of epids for imaging and dosimetric purposes requires a reliable quality control process routine to be carried out regularly. in this study, two in-house phantoms were developed and analyzed for implementation in a qua...

Journal: :iranian journal of radiation research 0
m. mohammadi department of medical physics, royal adelaide hospital. adelaide, sa 5000, australia e. bezak

abstractbackground: although electronic portal imaging devices (epids) have originally developed for positioning verification, they can also be used for dosimetric purposes. in the current work, the dose response of minimum detectable thickness of a scanning liquid filled ion chamber epid, slic-epid, and the variation of transmitted dose with the shift of inhomogeneity inside of phantom was als...

Journal: :iranian journal of radiation research 0
s. r. mahdavi medical physics department of iran university of medical sciences, tehran, iran e. jazayeri gharehbagh department of radiology and radiotherapy technology, school of allied health sciences, tehran university of medical sciences, tehran, iran b. mofid 3radiotherapy department of shahid beheshti university of medical sciences, tehran, iran a. h. jafari research center of biomedical technology and robotics, tehran university of medial sciences, tehran, iran a. r. nikoofar radiotherapy department of iran university of medical sciences, tehran, iran

background: to correct patient positioning errors (setup errors) during prostate cancer treatment using epid and fiducial gold markers, to improve the accuracy of the dose delivery in these patients. materials and methods: fifteen patients with localized prostate carcinoma after implantation of fiducial gold markers in their prostate gland underwent the five-field imrt planning technique. the p...

A. H. Jafari, A. R. Nikoofar, B. Mofid, E. Jazayeri Gharehbagh , S. R. Mahdavi,

Background: To correct patient positioning errors (setup errors) during prostate cancer treatment using EPID and fiducial gold markers, to improve the accuracy of the dose delivery in these patients. Materials and Methods: Fifteen patients with localized prostate carcinoma after implantation of fiducial gold markers in their prostate gland underwent the five-field IMRT planning technique. The p...

Farzaneh Allaveisi Nasrin Amini

Introduction: Electronic portal imaging devices (EPIDs) are fundamentally used for instantaneous verification of the patient set‐up, block shape, and leaf positions during radiation therapy. In radiotherapy, situations arise in which an inclined PTV must be treated mutually with adjacent nodal regions. This methodology is most widely used for matching tangential/lateral breas...

Eyachew Misganew Tegaw Getu Ferenji Tadesse Ghazale Geraily,

Introduction: Electronic Portal Imaging Device (EPID) and Cone Beam Computed Tomography (CBCT) are the preferred tools of Image Guided Radiotherapy (IGRT) and Dose Guided Radiotherapy (DGRT) which have been used for Radiotherapy treatment verifications. As a result, the number of publications dealing with these two tools for radiation treatment verification has increased consi...

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