Results 171 to 180 of about 4,830 (200)

Characteristics relevant to portal dosimetry of a cooled CCD camera‐based EPID

Medical Physics, 2004
Our EPIDs have recently been equipped with Peltier‐cooled CCD cameras. The CCD cooling dramatically reduced deteriorating effects of radiation damage on image quality. Over more than 600 days of clinical operation, the radiation induced noise contribution has remained stable at a very low level (1 SD⩽0.15% of the camera dynamic range), in marked ...
Franken, EM (E.), Boer, Hans, Barnhoorn, J, Heijmen, Ben   +3 more
openaire   +3 more sources

[Is there a future for dosimetry control by portal imaging?].

Cancer radiotherapie : journal de la Societe francaise de radiotherapie oncologique, 2001
This article deals with the potential benefits of portal imaging as a tool for the dosimetric control of a radiotherapy treatment. In the introduction the advantages of dosimetric control with portal imaging are described. Subsequently, the physical problem is considered between patient exit dose and dose at the level of the portal detector ...
openaire   +1 more source

Evaluation of Portal Dosimetry for VMAT Treatments

International Journal of Radiation Oncology*Biology*Physics, 2012
R. Rice, I. Dragojevic, J. Hoisak, T. Pawlicki, A.J. Mundt   +4 more
openaire   +1 more source

446Transmission dosimetry with portal films in daily practice

Radiotherapy and Oncology, 1996
C. Weltens, D. Huyskens, A. Dutreix, E. van der Schueren   +3 more
openaire   +1 more source

Commissioning an aSi-EPID for in vivo Portal Dosimetry

Clinical Oncology, 2011
D.J. Shaw, D.W. Smith, P. Crean, P.A. Rixham, S.J. Weston, V.P. Cosgrove, D.I. Thwaites   +6 more
openaire   +1 more source

Electronic Portal Imaging Device Dosimetry

2017
Boyd McCurdy, Peter Greer, James Bedford
openaire   +1 more source

IMPLEMENTATION OF PORTAL DOSIMETRY WITH AN AMORPHOUS SILICON EPID

Radiotherapy and Oncology, 2009
S.I. MedeiraBrás, S. Oliveira, F. Serra, M.S.B. Pontes, K. Jacob Da Cruz, M. Sousa, P. Ferreira, N. Teixeira   +7 more
openaire   +1 more source

The use of an electronic portal imaging device for exit dosimetry and quality control measurements

International Journal of Radiation Oncology Biology Physics, 1995
P C Williams, M C Kirby
exaly  

490Diodes and portal-films in TBI in-vivo dosimetry

Radiotherapy and Oncology, 1996
P. Signorotto, A. Del Vecchio, C. Fiorino, P. Mangili, R. Calandrino   +4 more
openaire   +1 more source

In-vivo dosimetry by diode semiconductors in combination with portal films during TBI: reporting a 5-year clinical experience

Radiotherapy and Oncology, 1999
Paola Mangili, Claudio Fiorino, Giovanni Mauro Cattaneo   +2 more
exaly