Results 11 to 20 of about 4,431 (152)

Dose Characteristics of a Deep Learning Model for EPID-based In vivo Dosimetry [PDF]

Journal of Medical Physics
Background: Images from onboard electronic portal imaging devices (EPID) contain dose information that can be converted into dose maps. A cycle-consistent generative adversarial network (CycleGAN)-based model was developed for two-dimensional (2D) EPID ...
Qilin Li, Dingshu Tian, Guangyao Sun, Wendong Gu, Jieqiong Jiang   +4 more
doaj   +2 more sources

Development of Artificial Intelligence as a Conversion Tool for Cine Electronic Portal Imaging Device Images to Radiotherapy Dosimetry: Preliminary Study [PDF]

Iranian Journal of Medical Physics, 2022
Introduction: This research is a preliminary study of the development of Artificial Intelligence (AI) as a conversion tool from the pixel value of Cine a-Si 1000 Electronic Portal Imaging Device (EPID) images to dose.
Muhammad Ramadhan, Wahyu Wibowo, Supriyanto Pawiro   +2 more
doaj   +1 more source

Reporting Clinical Results of EPID-Based Patient-Specific Quality Assurance for Brain Stereotactic Radiosurgery/Radiation Therapy: Demonstrating the Feasibility of Same-Day Stereotactic Radiosurgery via HyperArc Delivery [PDF]

Advances in Radiation Oncology
Purpose: Patient-specific quality assurance (PSQA) of complex volumetric modulated arc therapy plans via Electronic portal imaging device (EPID)-based portal dosimetry (PD) is widely adopted by the radiation therapy community.
Damodar Pokhrel, PhD, Josh Misa, MS, Shane McCarthy, BS, William St. Clair, MD, PhD   +3 more
doaj   +2 more sources

Development of an Electronic Portal Imaging Device Dosimetry Method

Diagnostics, 2021
Support arm backscatter and off-axis effects of an electronic portal imaging device (EPID) are challenging for radiotherapy quality assurance. Aiming at the issue, we proposed a simple yet effective method with correction matrices to rectify backscatter ...
Jun Zhang, Ziting Fan, Xile Zhang, Ruijie Yang, Junhai Wen   +4 more
doaj   +1 more source

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, M H Bahreyni, M Mohammadi, S Nasseri, S Bayani, H Gholamhosseinian, R Salek, F Shahedi, M Momennezhad   +8 more
doaj   +1 more source

Manejo de las enfermedades pulmonares intersticiales difusas (EPID) asociadas a enfermedades autoinmunes, por el neumólogo en las diferentes unidades de EPID en España

Open Respiratory Archives, 2022
Resumen: Introducción: El objetivo del estudio fue conocer el manejo de los pacientes con enfermedad pulmonar intersticial difusa (EPID) asociada a enfermedades autoinmunes sistémicas (EAS) en las consultas de neumología especializadas en EPID en el ...
Orlando Acosta Fernández, Myriam Aburto Barrenetxea, Ana Belén Llanos González, María Jesús Rodríguez Nieto, María Molina Molina, Claudia Valenzuela   +5 more
doaj   +1 more source

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, Naer Baker, Khaled El-Shahat, Mohamed Akl, Ahmed Shawata   +4 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, Greco, Francesca, Mameli, Alessandra, Azario, Luigi, Balducci, Mario, Gambacorta, Maria Antonietta, Frascino, Vincenzo, Cilla, Savino, Sabatino, Domenico, Piermattei, Angelo   +9 more
  +7 more sources

Evaluation of IGRT-Induced Imaging Doses and Secondary Cancer Risk for SBRT Early Lung Cancer Patients In Silico Study

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, Heng-Le Gu MS, Xiao-Hui Yang BS, Hua Chen ME, Hao Wang MS, Yan Shao MS, Xiao-Yang Li MD, Ai-Hui Feng MS, Yan-Chen Ying MS, Xiao-Long Fu PhD, Kui Ma, Tao Zhou, Zhi-Yong Xu PhD   +12 more
doaj   +1 more source