Results 161 to 170 of about 8,576 (208)

Intra-operative fluoroscopy exposure in endoscopic lumbar discectomies. [PDF]

open access: yesSurg Neurol Int
Tsipouriaris P   +7 more
europepmc   +1 more source

A Theoretical Study of Measuring In-Air Collision Kerma

open access: yesA Theoretical Study of Measuring In-Air Collision Kerma
openaire  

Air kerma rate constants for radionuclides

European Journal of Nuclear Medicine, 1988
Conversion to SI units requires that the exposure rate constant which was usually quoted in R.h-1.mCi-1.cm2 be replaced by the air kerma rate constant with units m2.Gy.Bq-1.s-1. The conversion factor is derived and air kerma rate constants for 30 radionuclides used in nuclear medicine and brachytherapy are listed.
Wasserman H., Groenewald W.
openaire   +4 more sources

Spectra and air-kerma strength for encapsulated 192Ir sources

Medical Physics, 1999
The photon spectra in vacuum around four types of 192Ir HDR brachytherapy sources are calculated using the Monte Carlo code EGS4 and the most recent spectral information on 192Ir decay. The air-kerma strengths per unit activity are calculated based on the photon fluence around a bare 192Ir source and around each of four types of encapsulated sources ...
Borg, J., Rogers, D. W.O.
openaire   +5 more sources

Development and characterization of air kerma cavity standard

Measurement, 2019
Abstract Ionization chambers are the most common detectors for precise measurements such as these required in radiation protection and radiotherapy. This paper presents the design, development and characterization of a new graphite-walled cavity ionization chamber used as a primary standard for air kerma rate for 137Cs and 60Co gamma radiation of the
M.M. Szymko   +3 more
openaire   +3 more sources

Calculation of air-kerma rate of diagnostic X-ray generators

Radiological Physics and Technology, 2010
As one type of basic physical data related to the calculation of the construction of X-ray examination room shielding, we investigated the air-kerma rate 1 m from the source of the useful beam focus per unit current time product. Compared to the X-ray energy penetration values obtained in prior research, we obtained higher values. We found three causes
Yoh, Katoh   +5 more
openaire   +4 more sources

Lowering air kerma to improve the CTO operator's karma

Catheterization and Cardiovascular Interventions, 2023
Key Points Along with the implementation of protection devices and procedural techniques, optimizing fluoroscopic protocols is a crucial step to reduce radiation dose to cath‐lab operators According to this retrospective study, using an ultra‐low dose fluoroscopy protocol (3.75 frames per second) is a simple, effective, and safe way to reduce radiation
Stefano Rigattieri, Matteo Casenghi
openaire   +2 more sources

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