DQE(F) OF 4 GENERATIONS OF COMPUTED RADIOGRAPHY ACQUISITION DEVICES

被引：318

作者：

DOBBINS, JT ^{[1
]}

ERGUN, DL ^{[1
]}

RUTZ, L ^{[1
]}

HINSHAW, DA ^{[1
]}

BLUME, H ^{[1
]}

CLARK, DC ^{[1
]}

机构：

[1] PHILIPS MED SYST N AMER,SHELTON,CT 06484

来源：

MEDICAL PHYSICS | 1995年 / 22卷 / 10期

关键词：

DIGITAL RADIOGRAPHY; COMPUTED RADIOGRAPHY; MODULATION TRANSFER FUNCTION; NOISE POWER SPECTRA; DETECTIVE QUANTUM EFFICIENCY;

D O I：

10.1118/1.597627

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Measurements were made of the MTF(f), NPS(f), and DQE(f) of four generations of computed radiography (CR) imaging plates and three generations of CR image readers. The MTF generally showed only a minor change between generations of plates and readers, but the DQE(f) has improved substantially from a very early plate/reader combination to a more recent one. The DQE in the more recent plate/reader combination is 1.3x greater at low frequencies and about 3x greater at high frequencies than the much earlier versions. Thus there has been substantial improvement in the imaging performance obtainable with CR since some of the early observer studies which indicated poorer performance with CR than with screen-him.

引用

页码：1581 / 1593

页数：13

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