Measurement of the half-value layer for CT systems in a single-rotation technique: Reduction of stray radiation with lead apertures

2020 ◽  
Vol 76 ◽  
pp. 221-226
Author(s):  
Atsushi Fukuda ◽  
Nao Ichikawa ◽  
Masami Tashiro ◽  
Tensho Yamao ◽  
Katsuhiko Murakami ◽  
...  
Keyword(s):  
Stray Radiation ◽  
Rotation Technique

scholarly journals M2 plane rotation technique for approaching M2 perpendicularly to obliterate aneurysms with interlocking clipping: Technical case report

2021 ◽  
pp. 101316
Author(s):  
Wataru Yanagihara ◽  
Hiroshi Kashimura ◽  
Yosuke Akamatsu ◽  
Jun Yoshida ◽  
Daigo Kojima
Keyword(s):  
Case Report ◽  
Plane Rotation ◽  
Rotation Technique

Raman Spectra of Solid (NH4)2CrO4 and (ND4)2CrO4 Obtained by a Rotating Cell Technique

1976 ◽  
Vol 30 (2) ◽  
pp. 187-190 ◽  
Author(s):  
Robert L. Carter ◽  
L. Kevin O'Hare
Keyword(s):  
Hydrogen Bonding ◽  
Alkali Metal ◽  
Raman Spectra ◽  
Sampling Technique ◽  
Solid Sampling ◽  
Monoclinic Structure ◽  
Ammonium Ions ◽  
Cylindrical Cell ◽  
Sample Rotation ◽  
Rotation Technique

The Raman spectra of polycrystalline (NH4)2CrO4 and (ND4)2CrO4 have been obtained by a sample rotation technique where the uncompressed solid is contained in a glass cylindrical cell. The apparatus is a commerically available sample rotator for liquids, which was modified for the described solid sampling technique. The Raman spectra of (NH4)2CrO4 and (ND4)2CrO4 are discussed in relation to their uniquely monoclinic structure, in contrast to the β-K2SO4 structure found for (NH4)2SO4 and many alkali metal chromates and sulfates. The hydrogen bonding in (NH4)2CrO4 is described, and its role in determining both the structure and the Raman spectra is discussed. The data suggest a barrier to NH4+ rotation of approximately 3.70 kcal/mol, indicating that the ammonium ions are not freely rotating on the time scale of the Raman experiment (10−13 sec).

Assessment of stray radiation outside the main beam of the RUM-17 radiological device

1992 ◽  
Vol 26 (3) ◽  
pp. 133-135
Author(s):  
V. N. Vasil'ev ◽  
R. V. El'tsov
Keyword(s):  
Main Beam ◽  
Stray Radiation

An Offset-Fed X-Band Reflectarray Antenna Using a Modified Element Rotation Technique

2012 ◽  
Vol 60 (3) ◽  
pp. 1619-1624 ◽  
Author(s):  
A. Yu ◽  
F. Yang ◽  
A. Z. Elsherbeni ◽  
J. Huang ◽  
Y. Kim
Keyword(s):  
X Band ◽  
Rotation Technique ◽  
Reflectarray Antenna

scholarly journals Technical Note: Time‐gating to medical linear accelerator pulses: Stray radiation detector

2018 ◽  
Vol 46 (2) ◽  
pp. 1044-1048 ◽  
Author(s):  
Muhammad Ramish Ashraf ◽  
Petr Bruza ◽  
Venkat Krishnaswamy ◽  
David J. Gladstone ◽  
Brian W. Pogue
Keyword(s):  
Linear Accelerator ◽  
Radiation Detector ◽  
Technical Note ◽  
Medical Linear Accelerator ◽  
Stray Radiation ◽  
Time Gating

scholarly journals Stray radiation dose and second cancer risk for a pediatric patient receiving craniospinal irradiation with proton beams

2009 ◽  
Vol 54 (8) ◽  
pp. 2259-2275 ◽  
Author(s):  
Phillip J Taddei ◽  
Dragan Mirkovic ◽  
Jonas D Fontenot ◽  
Annelise Giebeler ◽  
Yuanshui Zheng ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Cancer Risk ◽  
Pediatric Patient ◽  
Craniospinal Irradiation ◽  
Second Cancer ◽  
Proton Beams ◽  
Stray Radiation ◽  
Second Cancer Risk
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