Results 21 to 30 of about 256 (114)
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 +4 more
openaire +2 more sources
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 +5 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 +6 more
openaire +2 more sources
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 +4 more
wiley +1 more source
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 +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 +6 more
wiley +1 more source
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 +10 more
wiley +1 more source
Thermoluminescence of LiF:Mg as a function of R [PDF]
, 1979 A sample of LiF:Mg was ground and seived to make a powder. After annealing and quenching it was irradiated with a cesium 137 source. TL was measured within ten minutes after irradiation. (FS)
Pearson, D. W., Cameron, J. R.
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Zeitschrift für Medizinische Physik, 2018 Long-term survivors of cancer who were treated with radiotherapy are at risk of a radiation-induced tumor. Hence, it is important to model the out-of-field dose resulting from a cancer treatment. These models have to be verified with measurements, due to the small size, the high sensitivity to ionizing radiation and the tissue-equivalent composition ...
Hauri P, Schneider U
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In‐house development of CT‐based 3D‐printed head & neck phantom for Radiotherapy applications
Journal of Applied Clinical Medical Physics, Volume 27, Issue 7, July 2026.Abstract Background Anthropomorphic phantoms are widely used in Radiotherapy for quality assurance (QA), treatment verification and dosimetric validation purposes. However, commercially available anthropomorphic phantoms are expensive and offers limited customization, restricting their broader clinical use.
Subhalaxmi Mishra +6 more
wiley +1 more source