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AUTOMATIC PATIENT-INSTRUCTION DEVICES IN THIN-SECTION CT OF THE THORAX - IMPACT ON IMAGE QUALITY 1994 Radiological-Society-of-North-America Scientific Assembly Bankier, A. A., Fleischmann, D., KANTENDORFER, K., WIESMAYR, M. N., Kontrus, M., Hubsch, P., Herold, C. J. RADIOLOGICAL SOC NORTH AMERICA. 1995: 841–44

Abstract

To determine what influence automatic patient-instruction (API) devices have on image quality of chest computed tomographic (CT) scans and whether the qualitative outcome justifies their routine use.Thin-collimation CT scans of two age- and sex-matched groups of 64 patients each were evaluated prospectively for the presence of breathing artifacts and for concomitant deterioration of image quality. Breathing commands in group 1 were given with the API device and in group 2 with technologist-performed patient instruction. Cardiac motion artifacts were not evaluated. The frequency of scans repeated owing to breathing artifact was determined.Image quality was worse in group 1 compared with that of group 2. The percentage of scans repeated was higher with API (38%) than without API (16%).API devices cannot be recommended for thin-section CT of the thorax. The large number of scans that must be repeated leads to a considerable increase in patient irradiation, scanning time, and cost.

View details for Web of Science ID A1995RQ24300042

View details for PubMedID 7644653