High Frequency Edge Enhancement in the Detection of Fine Pulmonary Lines Parity Between Storage Phosphor Digital Images and Conventional Chest Radiography

Fine linear structures represent a severe test of the minimum spatial resolution that is needed for digital chest imaging. We studied the comparative observer performance of storage phosphor digital imaging (1760 X 2140 pixel matrix, 10 bits deep), and conventional radiography (Lanex medium screen,...

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Veröffentlicht in:	Investigative radiology 1989-09, Vol.24 (9), p.643-646
Hauptverfasser:	OESTMANN, JOERG W, GREENE, REGINALD, RUBENS, JAMI R, PILE-SPELLMAN, ELIZABETH, HALL, DEBORAH, ROBERTSON, CHARLES, LLEWELLYN, HENRY J, McCARTHY, KATHLEEN A, POTSAID, MAJIC, WHITE, GEORGE
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Humans Male Radiographic Image Enhancement - standards Radiography, Thoracic - methods Radiography, Thoracic - standards ROC Curve
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Zusammenfassung:	Fine linear structures represent a severe test of the minimum spatial resolution that is needed for digital chest imaging. We studied the comparative observer performance of storage phosphor digital imaging (1760 X 2140 pixel matrix, 10 bits deep), and conventional radiography (Lanex medium screen, Ortho C film) in the detection of simulated fine pulmonary lines superimposed on the normal chest when exposure factors were identical (20mR skin entrance dose at 141 kVp). Receiver operating characteristics analysis of 2160 observations by six readers found that high frequency edge-enhanced digital images (ROC area0.78 ± 0.06) performed better than unenhanced digital images (ROC area0:70 ± 0.07) (P
ISSN:	0020-9996 1536-0210
DOI:	10.1097/00004424-198909000-00001