Automatic patient-instruction devices in thin-section CT of the thorax: Impact on image quality

A. A. Bankier, D. Fleischmann, K. Dantendorfer, M. N. Wiesmayr, M. Kontrus, P. Hubsch, C. J. Herold

Research output: Contribution to journalArticle

Abstract

PURPOSE: 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. MATERIALS AND METHODS: 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. RESULTS: 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%). CONCLUSION: 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.

Original languageEnglish (US)
Pages (from-to)841-844
Number of pages4
JournalRadiology
Volume196
Issue number3
StatePublished - 1995
Externally publishedYes

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Thorax
Equipment and Supplies
Artifacts
Respiration
Research Design
Costs and Cost Analysis

Keywords

  • Computed tomography (CT), image quality
  • Computed tomography (CT), technology
  • Thorax, CT

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

Cite this

Bankier, A. A., Fleischmann, D., Dantendorfer, K., Wiesmayr, M. N., Kontrus, M., Hubsch, P., & Herold, C. J. (1995). Automatic patient-instruction devices in thin-section CT of the thorax: Impact on image quality. Radiology, 196(3), 841-844.

Automatic patient-instruction devices in thin-section CT of the thorax : Impact on image quality. / Bankier, A. A.; Fleischmann, D.; Dantendorfer, K.; Wiesmayr, M. N.; Kontrus, M.; Hubsch, P.; Herold, C. J.

In: Radiology, Vol. 196, No. 3, 1995, p. 841-844.

Research output: Contribution to journalArticle

Bankier, AA, Fleischmann, D, Dantendorfer, K, Wiesmayr, MN, Kontrus, M, Hubsch, P & Herold, CJ 1995, 'Automatic patient-instruction devices in thin-section CT of the thorax: Impact on image quality', Radiology, vol. 196, no. 3, pp. 841-844.
Bankier AA, Fleischmann D, Dantendorfer K, Wiesmayr MN, Kontrus M, Hubsch P et al. Automatic patient-instruction devices in thin-section CT of the thorax: Impact on image quality. Radiology. 1995;196(3):841-844.
Bankier, A. A. ; Fleischmann, D. ; Dantendorfer, K. ; Wiesmayr, M. N. ; Kontrus, M. ; Hubsch, P. ; Herold, C. J. / Automatic patient-instruction devices in thin-section CT of the thorax : Impact on image quality. In: Radiology. 1995 ; Vol. 196, No. 3. pp. 841-844.
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N2 - PURPOSE: 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. MATERIALS AND METHODS: 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. RESULTS: 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%). CONCLUSION: 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.

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