Title :
Corrections of errors in densitometry under simulated in vivo conditions
Author :
Solzbach, U. ; Waltenspiel, R. ; Wollschlager, H. ; Zeiher, A.M. ; Just, H.
Author_Institution :
Med. Clinic, Freiburg Univ., Germany
Abstract :
Errors in densitometry due to distortion, scattering, and beam hardening have been eliminated under simulated in vivo conditions. The method was tested by means of an anthropomorphic phantom. The results reveal good agreement between the evaluated relative lumina and the real vessel relations. There is a linear relationship between the integrated profile of gray values and the real cross section. With this procedure the measured cross section contains a mean error of about 5%-7%
Keywords :
densitometry; diagnostic radiography; measurement errors; anthropomorphic phantom; beam hardening; cross section; densitometry errors correction; distortion; gray values; integrated profile; linear relationship; medical diagnostic imaging; relative lumina; scattering; simulated in vivo conditions; Anthropomorphism; Distortion measurement; Error correction; Image intensifiers; Imaging phantoms; In vivo; Magnetic field measurement; Medical simulation; X-ray imaging; X-ray scattering;
Conference_Titel :
Computers in Cardiology 1989, Proceedings.
Conference_Location :
Jerusalem
Print_ISBN :
0-8186-2114-1
DOI :
10.1109/CIC.1989.130588
