Quantitative coronary arteriography: the impact of image zoom and reference object size on diameter measurements

Author

Linderer, T. ; Wunderlich, W. ; Fischer, F. ; Schroder, R.

Author_Institution

Klinikum Steglitz, Berlin, Germany

fYear

1993

fDate

5-8 Sep 1993

Firstpage

579

Lastpage

582

Abstract

The authors studied the effect various catheter sizes and floating image zoom on catheter calibrated vessel diameters. The pixel sizes of vessel phantoms (0.3-4.5 mm ø) were obtained by optimum weighted edge detection. The 2.0 mm and the 3.0 mm phantom served as scaling device for catheter calibration. Image zoom varied from 1 to 6 fold. The authors found, that reference object calibration causes a rotation of measured native pixel diameter curves, whereby the amount of rotation depends on the size of the scaling catheter and affects especially diameters in the normal range of coronaries. It is concluded that using different catheter sizes and varying image zoom should be discouraged in long-term studies of coronary artery disease, since they feign non-existent lesion changes

Keywords

angiocardiography; biomedical measurement; diameter measurement; 0.3 to 4.5 mm; catheter calibration; catheter size; coronary artery disease; floating image zoom; medical diagnostic imaging; nonexistent lesion changes feigning; optimum weighted edge detection; pixel size; quantitative coronary arteriography; reference object calibration; reference object size; rotation; scaling catheter; scaling device; Angiography; Calibration; Catheters; Image edge detection; Imaging phantoms; Lesions; Noise measurement; Pixel; Size measurement; X-ray imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1993, Proceedings.

Conference_Location

London

Print_ISBN

0-8186-5470-8

Type

conf

DOI

10.1109/CIC.1993.378336

Filename

378336