Results 171 to 180 of about 19,704 (214)

How flatbed scanners upset accurate film dosimetry

Physics in Medicine and Biology, 2015
Film is an excellent dosimeter for verification of dose distributions due to its high spatial resolution. Irradiated film can be digitized with low-cost, transmission, flatbed scanners. However, a disadvantage is their lateral scan effect (LSE): a scanner readout change over its lateral scan axis.
Battum, L.J. van, Huizenga, H., Verdaasdonk, R.M., Heukelom, S.   +3 more
openaire   +5 more sources

Computed tomography phantom for radiochromic film dosimetry

Australasian Physics & Engineering Sciences in Medicine, 2007
To evaluate in detail the dose distribution during computed tomography (CT), a sheet roll CT dosimetry phantom (SRCT-P) with a radiochromic film (RF) was experimentally developed. The SRCT-P was made by rolling up a vinyl chloride sheet in a cylindrical shape to arbitrarily select the SRCT-P diameter, dose measurement position, and depth.
R, Gotanda, T, Katsuda, T, Gotanda, M, Eguchi, S, Takewa, A, Tabuchi, H, Yatake   +6 more
openaire   +2 more sources

Verification of brachytherapy dosimetry with radiochromic film

Medical Dosimetry, 1999
The aim of this work is to empirically validate the optimized dose distribution calculated by the Nucletron Brachytherapy Planning System (v. 13.3) at a distance of 1.0 cm from a stepping source of high-dose-rate-iridium 192 (192Ir). The longitudinal dose distribution at 1.0 cm from a straight pathway of multiple-source positions is measured using ...
W, Schumer, W, Fernando, M, Carolan, T, Wong, S, Wallace, G, Quong, M, Geso   +6 more
openaire   +2 more sources

Verification of IMRT fields by film dosimetry

Medical Physics, 2003
In intensity modulated radiation therapy (IMRT) the aim of an accurate conformal dose distribution is obtained through a complex process. This ranges from the calculation of the optimal distribution of fluence by the treatment planning system (TPS), to the dose delivery through a multilamellar collimator (MLC), with several segments per beam in the ...
BUCCIOLINI, MARTA, BANCI BUONAMICI F., CASATI, MARTA   +2 more
openaire   +3 more sources

Polaroid Film in Radiation Dosimetry and Survey

Radiology, 1971
Abstract The authors initiated a study of the use of Polaroid films in radiation dosimetry and surveys; in particular, the response of various types of Polaroid films to radiation output from different sources. A good correlation was found between the readings from a Victoreen R-chamber and from Polaroid film, regardless of whether a 300 kVp machine or
H, LeVan, S, Stefani, S J, Hage
openaire   +2 more sources

Dosimetry of biological irradiations using radiochromic films

Physics in Medicine and Biology, 2013
Delivering accurate radiation dose to blood specimens during biological irradiations is essential in quantifying damage of ionizing radiation. To estimate dose to blood samples as accurately as possible, pieces of EBT2 model GAFCHROMIC™ film were placed within an approximately 10 mm finely ground rice layer that was used to simulate test specimens ...
S, Aldelaijan, A, Nobah, G, Alsbeih, B, Moftah, I, Aldahlawi, A, Alzahrany, N, Tomic, S, Devic   +7 more
openaire   +2 more sources

Exit dose measurements by portal film dosimetry

Radiotherapy and Oncology, 1993
Portal in vivo dosimetry is a very attractive tool for patient dose measurements because of the large amount of information that portal film systems can easily collect, once positioned at the exit surface of the patient. The first step in the verification of the reliability of portal films as in vivo dosimeters is the evaluation of the agreement ...
C, Fiorino, A, del Vecchio, G M, Cattaneo, M, Fusca, B, Longobardi, P, Signorotto, R, Calandrino   +6 more
openaire   +2 more sources

Film Dosimetry

2021
Sina Mossahebi, Nazanin Hoshyar, Rao Khan, Arash Darafsheh   +3 more
openaire   +1 more source

Radiochromic film dosimetry for clinical proton beams

Applied Radiation and Isotopes, 1997
Depth doses and lateral profiles for proton beams with energies of 100-250 MeV were measured with a high-sensitivity GafChromic MD-55 film, which requires no post-irradiation development. The exposed MD-55 films were evaluated with the RIT 113 film dosimetry system.
openaire   +2 more sources

Megaroentgen Dosimetry Employing Photographic Film without Processing

Radiation Research, 1960
The formation of the latent image in photographic film by the absorption of radiation energy and the subsequent darkening of the film by chemical photographic processing for many years have provided a convenient system for the dosimetry of Xand y-radiation (1).
openaire   +2 more sources