Results 21 to 30 of about 8,715 (199)
Clinical Experience of Intensity Modulated Radiotherapy Pre-Treatment Quality Assurance for Carcinoma Head and Neck Patients with EPID and IMatriXX in Rural Center [PDF]
Journal of Biomedical Physics and Engineering, 2020 Background: Radiation therapy techniques as Intensity Modulated Radiotherapy (IMRT), rapid arc have been used for treatment of cancer with high accuracy.
M More, V Jain, O P Gurjar
doaj +1 more source
An Empirical Transmitted EPID Dosimetry Method using a Back-Projection Algorithm [PDF]
Journal of Biomedical Physics and Engineering, 2019 Background: The present study aimed to introduce a rapid transmission dosimetry through an electronic portal-imaging device (EPID) to achieve two-dimensional (2D) dose distribution for homogenous environments. Material and Methods: In this Phantom study,
S M Hashemi +8 more
doaj +1 more source
Optimizing TrueBeam jaw calibrations to reduce positional errors at customizable gantry and collimator angles [PDF]
J Appl Clin Med PhysAbstract Background Clinical medical physicists in a radiotherapy setting are aware of the importance of maintaining linac collimators with high positional accuracy, especially when used to form junctions; however, there is a lack of quality control options available.
Sample C, Sonier M, Atwal P.
europepmc +2 more sources
Verification of IMRT and RapidArc Localized Prostate Cancer Treatment Plans Using EPID and Delta4 in vivo Dosimetry Methods [PDF]
Middle East Journal of Cancer, 2021 Background: Quality assurance for intensity modulated radiation therapy (IMRT) depends on the type of dosimetry system and its evaluation procedure. We can check both the intensity and distribution of each field as the required pretreatment verification ...
Moustafa Ahmed +4 more
doaj +1 more source
Technology in Cancer Research & Treatment, 2021 Objectives: This study performed dosimetry studies and secondary cancer risk assessments on using electronic portal imaging device (EPID) and cone beam computed tomography (CBCT) as image guided tools for the early lung cancer patients treated with SBRT.
Yan-Hua Duan ME +12 more
doaj +1 more source
Breast in vivo dosimetry by EPID
Journal of Applied Clinical Medical Physics, 2010 An electronic portal imaging device (EPID) is an effective detector for in vivo transit dosimetry. In fact, it supplies two‐dimensional information, does not require special efforts to be used during patient treatment, and can supply data in real time.
Fidanzio, Andrea +9 more
+7 more sources
wzbillings/EPID-8130-Final-Paper: Final paper draft
, 2021 <p>This is the final draft of my paper for EPID 8130. Future updates will not edit the content of the paper unless absolutely necessary (or based on feedback after grading).</p> <p>In this work, I perform a systematic review of ...
Zane Billings
core +1 more source
Journal of Medical Physics, 2021 Flexibility and efficiency in a radiotherapy department with different linear accelerators (linacs) can be improved if they are dosimetrically equivalent, and there is no need of plan or patient-specific quality assurance (PSQA) modification.
José Alejandro Rojas-López +1 more
doaj +1 more source
EPID in vivo dosimetry in RapidArc technique [PDF]
Reports of Practical Oncology & Radiotherapy, 2010 The aim of the study was to estimate the dose at the reference point applying an aSi-EPID device in the course of patient treatment.The method assumes direct proportionality between EPID signal and dose delivered to the patient reference point during the treatment session.
Slosarek, Krzysztof +3 more
openaire +2 more sources
Contrast enhancement of EPID images via difference imaging : a feasibility study [PDF]
, 2010 In this study, the feasibility of difference imaging for improving the contrast of electronic portal imaging device (EPID) images is investigated. The difference imaging technique consists of the acquisition of two EPID images (with and without the ...
Khoei, Shadi +9 more
core +1 more source