Results 151 to 160 of about 4,830 (200)

Screening Sonography Detection of Liver Masses: Assessing the Non-emergent Nature of Focal Nodular Hyperplasia. [PDF]

Cureus
Miravent S, Guerreiro CA, Cordeiro RJ, Gomes CM, Vaz BS, Figueiredo TL.   +5 more
europepmc   +1 more source

The Spinning Manny Indexed Overlay System for VMAT total body irradiation. [PDF]

J Appl Clin Med Phys
Skinner L, Simiele E, Yang Z, Hui C, Romero I, Binkley M, Hoppe R, Hiniker SM, Kovalchuk N.   +8 more
europepmc   +1 more source

Dosimetry with a fluoroscopic electronic portal imaging device

, 1999
openaire   +1 more source

A literature review of electronic portal imaging for radiotherapy dosimetry [PDF]

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, Sebastiaan Nijsten, Markus Wendling   +2 more
exaly   +4 more sources

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Portal dosimetry of small unflattened beams

Physics in Medicine & Biology, 2021
Abstract We developed and validated a dedicated small field back–projection portal dosimetry model for pretreatment and in vivo verification of stereotactic plans entailing small unflattened photon beams.
Aldemar Torres Valderrama, Igor Olaciregui-Ruiz, Patrick González, Thijs Perik, Ben Mijnheer, Anton Mans   +5 more
openaire   +2 more sources

3D Dosimetric verification of volumetric-modulated arc therapy by portal dosimetry [PDF]

Radiotherapy and Oncology, 2010
BACKGROUND AND PURPOSE: To demonstrate the feasibility of back-projection portal dosimetry for accurate 3D dosimetric verification of volumetric-modulated arc therapy (VMAT), pre-treatment as well as in vivo.
Anton Måns, Peter Remeijer, Igor Olaciregui-Ruiz   +2 more
exaly   +2 more sources

In-vivo portal dosimetry by an ionization chamber

Physica Medica, 2005
As all methods for in-vivo dosimetry require special efforts many physicists are often discouraged in verifying the middle dose in a patient along the beam central axis. This work reports a practical method for the determination of the middle dose value, D(m), on the central beam axis, using a signal S(t), obtained by a small thimble ion-chamber ...
Piermattei, Angelo, Grimaldi, Luca, D'Onofrio, Guido, Cilla, Savino, Viola, Pietro, Craus, Maurizio, Fidanzio, Andrea, Azario, Luigi, Deodato, Francesco, Macchia, Gabriella, Morganti, Alessio Giuseppe   +10 more
openaire   +3 more sources

Breast in vivo dosimetry by a portal ionization chamber

Medical Physics, 2007
This work reports a practical method for the determination of the in vivo breast middle dose value, , on the beam central axis, using a signal , obtained by a small thimble ion chamber positioned at the center of the electronic portal imaging device, and irradiated by the x‐ray beam transmitted through the patient.
Grimaldi, Luca, D'Onofrio, Guido, Cilla, Savino, Fidanzio, Andrea, Stimato, Gerardina, Azario, Luigi, Deodato, Francesco, Macchia, Gabriella, MORGANTI, ALESSIO GIUSEPPE, Piermattei, Angelo   +9 more
openaire   +3 more sources