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 …

The task group (TG) for quality assurance of medical accelerators was constituted by the
American Association of Physicists in Medicine's Science Council under the direction of the …

Verification of geometric accuracy at the time of treatment delivery has always been a
necessary part of the radiotherapy process. Since the introduction of conformal and intensity …

To develop a quality assurance (QA) program for the On‐Board Imager (OBI) system and to
summarize the results of these QA tests over extended periods from multiple institutions …

PURPOSE: To determine planning target volume (PTV) margins for prostate radiotherapy
based on the internal margin (IM)(intrafractional motion) and the setup margin …

AAPM TG-218 provides recommendations for standard IMRT pre-treatment QA without
giving specifics for stereotactic radiosurgery (SRS) and stereotactic body radiotherapy …

Electronic portal imaging devices (EPIDs) are not only applied for patient setup verification
and detection of organ motion but are also increasingly used for dosimetric verification. The …

Electronic portal imaging devices (EPIDs) can be used to measure a two‐dimensional (2D)
dose distribution behind a patient, thus allowing dosimetric treatment verification. For this …

The goal of radiation therapy treatment is to deliver the therapeutic dose to target volumes
while reduce the radiation exposure to the adjacent normal structures. In the past, a large …

Background Arrays of thick segmented crystalline scintillators are useful x‐ray converters for
image‐guided radiation therapy using electronic portal imaging (EPI) and megavoltage …