Historically, several different electronic technologies have been utilized to replace the role of
radiographic films in capturing the images, including the scanning liquid ionization chamber …

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 …

Electronic portal imaging devices (EPIDs) have been the preferred tools for verification of
patient positioning for radiotherapy in recent decades. Since EPID images contain dose …

An electronic portal imaging device (EPID) can be used not only to acquire megavoltage
patient images but also to measure certain radiation beam parameters of the linear …

There has been an increasing interest in the application of electronic portal imaging devices
(EPIDs) to dosimetric verification, particularly for intensity modulated radiotherapy. Although …

Electronic portal imaging devices (EPIDs) can be used for non-imaging applications in
radiotherapy such as patient dosimetry. Of the systems available, the fluoroscopic camera …

An overview is provided of the use of amorphous silicon electronic portal imaging devices
(EPIDs) for dosimetric purposes in radiation therapy, focusing on 3D patient dose estimation …

Prerequisite for any new clinical dosimeter is a detailed understanding of the detector's dose
response behavior. The purpose of the present study was to investigate the level of …

The majority of EPID dosimetry literature discusses response linearity and the so-called
image lag and ghosting effects despite the lack of a common definition of these quantities …

When using an electronic portal imaging device (EPID) for dosimetric verifications, the
calibration of the sensitive area is of paramount importance. Two calibration methods are …