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Relative dose efficiencies of antiscatter grids and air gaps in pediatric radiography
Author(s) -
McDaniel David L.,
Cohen Gerald,
Wagner Louis K.,
Robinson Lawrence H.
Publication year - 1984
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.595520
Subject(s) - air gap (plumbing) , grid , radiography , nuclear medicine , computed radiography , materials science , medicine , radiology , mathematics , computer science , geometry , image quality , image (mathematics) , artificial intelligence , composite material
The relative dose efficiencies (RDE) of various antiscatter grids and air gaps were determined for conditions simulating those found in pediatric radiography, using phantoms representing a newborn child, a 5‐yr‐old and a 10‐yr‐old child. Our data indicate than an air gap is best for the newborn, due to the low levels of scatter. The 8:1 fiber grid or 15.2‐cm air gap without a grid can improve dose efficiency (DE) for the 5‐yr‐old child by 20%–25% relative to the 3.3‐cm air gap and no‐grid technique, while for the 10‐yr‐old child, DE can be improved by 40% with an 8:1 fiber grid.
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