22 September 1999 Spiral computed tomography of fetuses: reference data and interest in fetopathy
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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.
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Pierre M. Braillon, Pierre M. Braillon, Raymonde Bouvier, Raymonde Bouvier, } "Spiral computed tomography of fetuses: reference data and interest in fetopathy", Proc. SPIE 3772, Developments in X-Ray Tomography II, (22 September 1999); doi: 10.1117/12.363737; https://doi.org/10.1117/12.363737

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