Efficacy of clinical diagnostic procedures utilized in nuclear medicine. Final report, August 1977-November 30, 1983

Technical Report · Sun Jun 01 00:00:00 EDT 1986

OSTI ID:5507229

Saenger, E L

This report describes a study of 2023 patients comparing two methods of evaluating the efficacy of lung scanning in patients suspected of having pulmonary embolism (PE). Only the referring physicians determined the probability of the most important (MI) and most likely (ML) diagnoses, and management, before and after lung scanning. A logistic regression model was developed for the probability of a signout diagnosis of PE. Equal patient groups tested the validity of the regression equations for the probability of PE both before and after the lung scan. The models developed on half the data (Group I) were then tested on the second half of the data set (Group II) to determine their ability to predict with similar results. This shows that the lung scan classifies PE and NOT PE patients well. Entropy minimax pattern detection (EMPD) attempts to predict the diagnosis and management from prior patient attributes. In 2023 cases, attributes alone could not iminate the use of lung scans for all patients. Comparing the two analytic methods, the predictive value, sensitivity, specificity and accuracy of each method are similar. However, EMPD predicts on a relatively small percent of cases (40% prior and 715 post scan) while logistic regression equations predict on 100% of cases. 29 refs., 2 figs., 16 tabs.

• Research Organization: Cincinnati Univ. Medical Center, OH (USA)
• DOE Contract Number: AC02-77EV04533
• OSTI ID: 5507229
• Report Number(s): DOE/EV/04533-8; ON: DE86014661
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
DIAGNOSTIC TECHNIQUES
ACCURACY
LUNGS
SCINTISCANNING
EMBOLI
PATIENTS
PATTERN RECOGNITION
REGRESSION ANALYSIS
RISK ASSESSMENT
BODY
COUNTING TECHNIQUES
MATHEMATICS
ORGANS
RADIOISOTOPE SCANNING
RESPIRATORY SYSTEM
STATISTICS
550602* - Medicine- External Radiation in Diagnostics- (1980-)