نتایج جستجو برای: termolominecene dosimeter

تعداد نتایج: 2113  

Journal: :iranian journal of science and technology (sciences) 2015
m. mahdavi

computed tomographyrepresents about 10% of all diagnostic radiology procedures, but it isresponsible for almost 50% - 60% of exposure from diagnostic procedures. inhead ct, other critical organs such as eye lenses and thyroids are in theradiation field. therefore, dose assessment in these organs is very important.the aim of this study is to estimate the absorbed dose in critical organs ofpatien...

2017
Shih-Ming Hsu Chao-Hsiung Hung Yi-Jen Liao Hsiao-Mei Fu Jo-Ting Tsai Yung-Hui Huang David Y. C. Huang

CyberKnife is one of multiple modalities for stereotactic radiosurgery (SRS). Due to the nature of CyberKnife and the characteristics of SRS, dose evaluation of the CyberKnife procedure is critical. A radiophotoluminescent glass dosimeter was used to verify the dose accuracy for the CyberKnife procedure and validate a viable dose verification system for CyberKnife treatment. A radiophotolumines...

2013
T Juang J Newton S Das J Adamovics M Oldham

Deformable 3D dosimeters have potential applications in validating deformable dose mapping algorithms. This study evaluates a novel deformable PRESAGE® dosimeter and its application toward validating the deformable algorithm employed by VelocityAI. The deformable PRESAGE® dosimeter exhibited a linear dose response with a sensitivity of 0.0032 ΔOD/(Gy/cm). Comparison of an experimental dosimeter...

2015
Masayori Ishikawa Naomi Nagase Taeko Matsuura Junichi Hiratsuka Ryusuke Suzuki Naoki Miyamoto Kenneth Lee Sutherland Katsuhisa Fujita Hiroki Shirato

The scintillator with optical fiber (SOF) dosimeter consists of a miniature scintillator mounted on the tip of an optical fiber. The scintillator of the current SOF dosimeter is a 1-mm diameter hemisphere. For a scintillation dosimeter coupled with an optical fiber, measurement accuracy is influenced by signals due to Cerenkov radiation in the optical fiber. We have implemented a spectral filte...

Journal: :The Laryngoscope 2015
Stephanie Misono Kathryn Banks Philippe Gaillard George S Goding Bevan Yueh

OBJECTIVES/HYPOTHESIS Voice rest is frequently recommended following surgical disruption of vocal fold epithelium, but patients report variable adherence to voice rest recommendations. The objective of this study was to assess the clinical utility of an ambulatory vocal dosimeter for measuring adherence to voice rest recommendations. STUDY DESIGN Outcomes research. METHODS Part 1: To determ...

Journal: :Thorax 1988
M M Nieminen A Lahdensuo L Kellomaeki J Karvonen A Muittari

A new inhalation synchronised dosimeter triggered by low inspiratory flow rates has been assessed. The methacholine challenge test using dosimeter nebulisation with controlled tidal breathing was compared with continuous nebulisation using De Vilbiss No 40 nebulisers with deep inhalations in 11 asthmatic subjects. Within subject PD20 FEV1 values were lower with the dosimeter method than with th...

Journal: :International journal of radiation oncology, biology, physics 2012
J Lah D Kim S Park

PURPOSE To evaluate the suitability of the GD-301 glass dosimeter for use in in vivo dose verification in proton therapy. METHODS The glass dosimeter was analyzed for its dosimetric characteristic in proton beam. Dosimeters were calibrated in a water phantom using a stair-like holder specially designed for this study. To determine the accuracy of the glass dosimeter in proton dose measurement...

2008
Bojana Šećerov Goran Bačić

Radiation processing in many areas, particularly in radiation sterilization, demands control of the absorbed dose. Many dosimeters have been proposed for the high-level dose range (region of 10 to 50 kGy). However, in addition to the required reproducibility, reliability or uncertainty (< 5%), it is desirable for radiation processing that the selected dosimetric system is easy to operate. One o...

Journal: :Medical physics 2015
Kelsey Chisholm Devin Miles Leith Rankine Mark Oldham

PURPOSE In optical-CT, the use of a refractively matched polyurethane solid-tank in place of a fluid bath has the potential to greatly increase practical convenience, reduce cost, and possibly improve the efficacy of flood corrections. This work investigates the feasibility of solid-tank optical-CT imaging for 3D dosimetry through computer simulation. METHODS A matlab ray-tracing simulation p...

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