The LSF and MTF of rare-earth oxysulfide intensifying screens.

Abstract:

:The line spread function (LSF) and modulation transfer function (MTF) of 9 rare-earth screen/film systems were measured and compared with those of two fast calcium tungstate systems, using double-emulsion films sandwiched between two screens and mounted in regular cassettes. The LSFs were found to fit exponential functions. These results indicate that the increased sensitivity of rare-earth phosphors over calcium tungstate can be used to construct screens with a higher MTF or increased speed. The fast rare-earth systems allow the use of smaller focal spots for increased resolution while reducing the radiation dose to the patient.

journal_name

Radiology

journal_title

Radiology

authors

Arnold BA,Eisenberg H,Bjärngard BE

doi

10.1148/121.2.473

subject

Has Abstract

pub_date

1976-11-01 00:00:00

pages

473-7

issue

2

eissn

0033-8419

issn

1527-1315

journal_volume

121

pub_type

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