Quality Analysis of DSA Equipment

  • M. A. O. Thijssen
  • H. O. M. Thijssen
  • J. L. Merx
  • M. P. L. M. van Woensel
Conference paper

Abstract

In the framework of a quality analysis project the image quality (IQ) and related radiation dose were measured in constructively different DSA equipments in 6 hospitals in the Netherlands. The aim of this work was to develop a simple method for qualification and quantification of image quality, to establish the differences in the equipments and to develop recommandations for improvement. The structure of our investigation was as follows. For dose measurements in the 6 hospitals a human phantom was used to measure the surface dose at the level the thyroid gland using TLD dosimeters. The validity of the use of this phantom was established before in our hospital. We therefore compared the dose measurements on the level of the eye lenses and the thyroid gland on the human phantom with same measurements on 27 patients during a standardized DSA and conventional angiography (CA) of the aortic arch and brachiocephalic arteries. The image quality was measured on a monitor and a hard copy image after optimizing fluoroscopy using a contrast-detail (CD) phantom consisting of a plate of 1 cm of bakelite with dimensions of 26 by 26 cm embedded in 14 cm of perspex. Also the entrance dose on this phantom was measured. In each hospital the IQ parameters of the monitor and hard copy images of the CD phantom were correlated with the entrance dose of the CD phantom and the thyroid dose of the human phantom.

Keywords

Dial 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Ohara K, Chan HP, Doi K (1986) Investigation of basic imaging properties in digital radiography. Detection of simulated low contrast objects in DSA images. Am Assoc Phys Med 13: 304–311Google Scholar
  2. Rose A (1974) Vision, human and electronic. Plenum Press, New York, p 26Google Scholar
  3. Starr JS, Metz CE, Lusted LB, Goodenough DJ (1975) Visual detection and localization of radiographic images. Radiology 116: 533–538PubMedGoogle Scholar
  4. Starr JS, Metz CE, Lusted LB (1977) Comments on the generalization of receiver operating characteristic analysis to detection and localization tasks. Phys Med Biol 22: 376–379PubMedCrossRefGoogle Scholar
  5. Thijssen MAO (1983) Receiver operating characteristics curves in diagnostic imaging. Diagn Imag Clin Med 52: 163–168Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • M. A. O. Thijssen
  • H. O. M. Thijssen
  • J. L. Merx
  • M. P. L. M. van Woensel

There are no affiliations available

Personalised recommendations