Results 161 to 170 of about 10,990 (209)

Comparison of log file-based and measurement-based QA for detecting MLC positional errors and evaluating dosimetric impacts of MLC defects. [PDF]

J Appl Clin Med Phys
Kim CH, Kang KM, Choi HS.
europepmc   +1 more source

Dose Characteristics of a Deep Learning Model for EPID-based <i>In vivo</i> Dosimetry. [PDF]

J Med Phys
Li Q, Tian D, Sun G, Gu W, Jiang J.
europepmc   +1 more source

Cross-modality Dosimetry Audit in Head-and-neck Radiotherapy: A Phantom-based Approach for Photon and Proton Beams. [PDF]

J Med Phys
Oonsiri S, Kingkaew S, Vimolnoch M, Chatchumnan N, Oonsiri P.   +4 more
europepmc   +1 more source

Deep learning-based 3D dose reconstruction for intensity modulated radiation therapy using electronic portal imaging devices. [PDF]

J Appl Clin Med Phys
Yang D, Fan J, Wenliang Y, Wang J, Sun Z, Hu W.   +5 more
europepmc   +1 more source

Dosimetry with a fluoroscopic electronic portal imaging device

, 1999
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Routine individualised patient dosimetry using electronic portal imaging devices

Radiotherapy and Oncology, 2007
To analyse the results of routine EPID measurements for individualised patient dosimetry.Calibrated camera-based EPIDs were used to measure the central field dose, which was compared with a dose prediction at the EPID level. For transit dosimetry, dose data were calculated using patient transmission and scatter, and compared with measured values ...
Sebastiaan M J J G, Nijsten, Ben J, Mijnheer, André L A J, Dekker, Philippe, Lambin, André W H, Minken   +4 more
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Portal dosimetry for VMAT using integrated images obtained during treatment

Medical Physics, 2014
Purpose:Portal dosimetry provides an accurate and convenient means of verifying dose delivered to the patient. A simple method for carrying out portal dosimetry for volumetric modulated arc therapy (VMAT) is described, together with phantom measurements demonstrating the validity of the approach.Methods:Portal images were predicted by projecting dose ...
James L, Bedford, Ian M, Hanson, Vibeke Nordmark, Hansen   +2 more
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A literature review of electronic portal imaging for radiotherapy dosimetry

Radiotherapy and Oncology, 2008
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 information, many groups have investigated their use for radiotherapy dose measurement.
Wouter, van Elmpt, Leah, McDermott, Sebastiaan, Nijsten, Markus, Wendling, Philippe, Lambin, Ben, Mijnheer   +5 more
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Transmission dosimetry with a liquid-filled electronic portal imaging device

International Journal of Radiation Oncology*Biology*Physics, 1996
To assess the accuracy of transmission dose rate measurements for various phantom-detector geometries, performed with an electronic portal imaging device (EPID) and to compare these transmission dose rate values with exit dose rate data.Transmission dose rate values on the central beam axis and beam profiles were measured with an EPID consisting of a ...
Essers, Marion, Boellaard, Ronald, Van Herk, Marcel, Lanson, Hugo, Mijnheer, Ben   +4 more
openaire   +5 more sources