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Proceedings Paper

Spiral computed tomography of fetuses: reference data and interest in fetopathy
Author(s): Pierre M. Braillon; Raymonde Bouvier
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Paper Abstract

The aim of this work was to define reference values for the skeletal and total body volumes (SV and TBV) of human fetuses from 3D reconstructions obtained with spiral computed tomography (CT). The interest of the technique in fetopathy was also estimated. Twenty three fetuses who died just before delivery were studied. The causes of death were not associated with any metabolism abnormality, and all these babies were appropriated for gestational age (GA: 14 - 41.5 wks; Body Weight BW: 22 - 3760 g). They were scanned with a spiral mode on a CT scanner (Elscint CT Twin) using a 2.7 mm slice thickness, a pitch value of 0.7, and a 512 X 512 image matrix. Lengths and volumes were measured on 3D images reconstructed with appropriate windows. High correlations (r greater than 0.95) were found between BW, SV or TBV and the long bone lengths. The ratio SV/TBV was 8.2 plus or minus 0.2%. With the scanning and analysis parameters used, it was extremely difficult to make a precise segmentation of a given organ. However, some few alterations of these parameters could largely increase the potential of the technique in fetopathy.

Paper Details

Date Published: 22 September 1999
PDF: 7 pages
Proc. SPIE 3772, Developments in X-Ray Tomography II, (22 September 1999); doi: 10.1117/12.363737
Show Author Affiliations
Pierre M. Braillon, Hospital Edouard Herriot and Univ. Lyon I--Claude Bernard (France)
Raymonde Bouvier, Hospital Edouard Herriot and Univ. Lyon I--Claude Bernard (France)

Published in SPIE Proceedings Vol. 3772:
Developments in X-Ray Tomography II
Ulrich Bonse, Editor(s)

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