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A method for testing scattered radiation grids
Author(s) -
Nielsen Bengt
Publication year - 1980
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 - 10.1118/1.594666
Subject(s) - imaging phantom , radiation , grid , optics , dosimetry , medical imaging , medical physics , radiation dose , physics , computer science , nuclear medicine , mathematics , artificial intelligence , medicine , geometry
A simple method of evaluating contrast improvement factors and other related quantities has been developed. With this method a water or lucite phantom is imaged with a lead disk on a nonscreen film using a scattered radiation grid with unknown characteristics. The image is then compared with that obtained with the same arrangement but with a calibrated scattered radiation grid. The method described does not need sophisticated instruments and can be used in any department of diagnostic radiology.