Relative accuracy of two diagnostic schemes for detection of pulmonary embolism by ventilation-perfusion scintigraphy

Journal Article · Mon Nov 01 00:00:00 EST 1982 · Radiology; (United States)

DOI:https://doi.org/10.1148/radiology.145.2.6215675· OSTI ID:6328371

Carter, W D ^[1]; Brady, T M; Keyes, Jr, J W; Thrall, J H; Greenhouse, J B; Biello, D R; Siegel, B A; Alderson, P O; Brady, T J

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1. Univ. of Michigan, Ann Arbor

Two diagnostic schemes for detection of pulmonary embolism by venilation-perfusion (V-P) scintigraphy were compared for relative accuracy by two groups of observers interpreting 70 V-P scintiscans. Observers in Group B, who used the criteria recently proposed by Biello et al., had a significantly smaller average number of ''indeterminate'' interpretations (41%) than did the observers in Group A (55%), who used a simpler scheme (p<0.05). In addition, Group B showed a slight improvement in positive predictive value without a deterioration in the negative predictive value compared with Group A.Along with this improvement in diagnostic performance, Group B achieved a significant reduction in interobserver variability compared with Group A for patients without pulmonary embolism (p<0.05). There was no significant difference in interobserver variability between the two groups for patients with pulmonary embolism. The diagnostic scheme introduced by Biello et al., represents a useful improvement for the diagnosis of pulmonary embolism by V-P imaging.

• OSTI ID: 6328371
• Journal Information: Radiology; (United States), Vol. 145:2
• Country of Publication: United States
• Language: English

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