Results 21 to 30 of about 705 (160)

Technical Note: On the feasibility of performing dosimetry in target and organ at risk using polymer dosimetry gel and thermoluminescence detectors in an anthropomorphic, deformable, and multimodal pelvis phantom

Medical Physics, Volume 48, Issue 9, Page 5501-5510, September 2021., 2021
Abstract Objective To assess the feasibility of performing dose measurements in the target (prostate) and an adjacent organ at risk (rectum) using polymer dosimetry gel and thermoluminescence detectors (TLDs) in an anthropomorphic, deformable, and multimodal pelvis phantom (ADAM PETer).
Mathieu Marot, Alina Elter, Philipp Mann, Andrea Schwahofer, Clemens Lang, Wibke Johnen, Stefan A. Körber, Bettina Beuthien‐Baumann, Clarissa Gillmann   +8 more
wiley   +1 more source

Shielding effect of a lead apron on the peripheral radiation dose outside the applicator of electron beams from an Elekta linear accelerator

Journal of Applied Clinical Medical Physics, Volume 22, Issue 1, Page 327-336, January 2021., 2021
Abstract Purpose To evaluate the shielding effect of lead aprons (LAs) on peripheral radiation doses outside the applicator of electron beams from a linear accelerator. Methods Out‐of‐field radiation doses of 4‐, 6‐, 8‐, 10‐, 12‐, and 15‐MeV electron beams from an Elekta Synergy linear accelerator (linac) were measured by thermoluminescence dosimeters (
Huifang He, Yingdong Zhang, Jidong Wang, Xingyu Chen, Yuyan Yang, Junjie Wang   +5 more
wiley   +1 more source

On LiF:Mg,Cu,P and LiF:Mg,Ti phosphors high & ultra-high dose features [PDF]

Radiation Measurements, 2014
LiF:Mg,Ti and LiF:Mg,Cu,P are well known thermoluminescence (TL) dosimetry materials since many years. A few years ago their properties seemed well known and it was widely believed that they are not suitable for the measurement of doses above the saturation level of the TL signal, which for both materials occur at about 1 kGy.
Barbara Obryk, Helen J. Khoury, Vinicius S. de Barros, Pedro L. Guzzo, Paweł Bilski   +4 more
openaire   +2 more sources

Study of out‐of‐field dose in photon radiotherapy: A commercial treatment planning system versus measurements and Monte Carlo simulations

Medical Physics, Volume 47, Issue 9, Page 4616-4625, September 2020., 2020
Purpose An accurate assessment of out‐of‐field dose is necessary to estimate the risk of second cancer after radiotherapy and the damage to the organs at risk surrounding the planning target volume. Although treatment planning systems (TPSs) calculate dose distributions outside the treatment field, little is known about the accuracy of these ...
B. Sánchez‐Nieto, K. N. Medina‐Ascanio, J. L. Rodríguez‐Mongua, E. Doerner, I. Espinoza   +4 more
wiley   +1 more source

A RADIOLUMINESCENCE STUDY OF DOSE CHARACTERISTICS OF LIF:MG,TI

Radiation Protection Dosimetry, 2021
Abstract A radioluminescence (RL) study of dose characteristics of tissue-equivalent LiF:Mg,Ti was carried out to determine the possible application as a real-time dosemeter. An RL measurements system based on LiF:Mg,Ti coupled with optical fiber was developed, and a blank fiber was set to remove the stem effect generated by the optical ...
Siyuan Zhang, Kaiyong Tang, Haijun Fan, Zhiyuan Li, Guangwei Huang, Kun Wu, Li Fu   +6 more
openaire   +2 more sources

Head and Neck Immobilization Masks: Increase in Dose Surface Evaluated by EBT3, TLD‐100 and PBC Method

Precision Radiation Oncology, Volume 4, Issue 3, Page 73-80, September 2020., 2020
Abstract Positioning and immobilization tools are considered essential components of radiotherapy treatments to guarantee that the planned dose distribution can be efficiently reached. However, the benefits brought by their use are met by an apparent increase in the patient skin entrance dose. In the current study, we evaluated the dose surface effects
Arnie Verde Nolasco, Luiz Oliveira de Faria   +1 more
wiley   +1 more source

Determination of surface dose in pencil beam scanning proton therapy

Medical Physics, Volume 47, Issue 5, Page 2277-2288, May 2020., 2020
Purpose/objective Quantification of surface dose within the first few hundred water equivalent µm is challenging. Nevertheless, it is of large interest for the proton therapy community to study dose effects in the skin. The experimental determination is affected by the detector properties, such as the detector volume and material.
A. Kern, C. Bäumer, K. Kröninger, L. Mertens, B. Timmermann, J. Walbersloh, J. Wulff   +6 more
wiley   +1 more source

SciFi detector and associated method for real‐time determination of profile and output factor for small fields in stereotactic radiotherapy

Medical Physics, Volume 47, Issue 4, Page 1930-1939, April 2020., 2020
Purpose For determining small‐field profile and output factor during stereotactic radiotherapy quality assurance (QA) procedures, we propose a novel system based on the scintillating fiber (SciFi) detector with output image acquisition and processing to allow real‐time monitoring of profile and output factor. Materials and methods The employed detector
P. Pittet, J. Esteves, J.‐M. Galvan, G.‐N. Lu, F. Blanc, G. Haefeli, P. Hopchev, S. Rit, L. Desbat, J. Ribouton, P. Jalade   +10 more
wiley   +1 more source

PERBANDINGAN TANGGAPAN DOSIMETER TERMOLUMINISENSI LiF:Mg,Ti DAN LiF:Mg,Cu,P TERHADAP DOSIS DALAM APLIKASI MEDIK

, 2013
PERBANDINGAN TANGGAPAN DOSIMETER TERMOLUMINISENSI LiF:Mg,Ti DANLiF:Mg,Cu,P TERHADAP DOSIS DALAM APLIKASI MEDIK. Kemajuan peralatan medik telahmenyebabkan terjadinya peningkatan kebutuhan thermoluminescence dosimeter (TLD),khususnya dalam pemantauan dosis
Sofyan, Hasnel, Kusumawati, Dyah Dwi
core   +2 more sources

Síntesis y Caracterización de LiF:Mg,Ti para Dosimetría de Radiaciones Ionizantes [PDF]

, 2011
La emisión de luz térmicamente estimulada, conocida simplemente como termoluminiscencia (TL), es la propiedad física que tienen algunos sólidos cristalinos de emitir luz después de haber sido irradiados, donde la cantidad de luz emitida es proporcional a
Lic. Lozano Rojas, Ivonne Berenice
core   +1 more source