Keywords:
Abdomen, Computer applications, CT, Health policy and practice, Endocrine disorders, Metabolic disorders
Authors:
A. Ciudin1, R. Salvador Tarrason1, A. Budoy1, L. Bunesch Villalba1, A. Ciudin1, M. G. Diaconu1, C. Spinu2, C. Nicolau1, A. Alcaraz1; 1Barcelona/ES, 2Sabadell/ES
DOI:
10.1594/ecr2013/C-0281
Methods and Materials
Prospective study in consecutive patients that underwent a programmed abdominal CT in our center between the 17th and the 25th of September 2012.
The AC was measured 4 times:
1.
standing position,
2.
supine position on the CT table,
3.
On CT images with a free-hand elliptical line following skin contour,
using the OsiriX (Geneva,
Switzerland) software.
4.
On CT images using an ellipse perimeter formula,
imputing antero-posterior and transverse abdominal diameters using the RAIM Alma 2010 (Barcelona,
Spain) software.
In all patients a measurement of the abdominal circumference was performed both in standing and supine positions by the same nurse in a sequential mode,
just before the abdominal CT.
A Gulick type measuring tape was used.
All patients underwent an abdominal CT that was indicated for diagnostic purpose.
The study adheres to local regulations and standards and was approved by the Institutional Review Board.
The abdominal circumference was evaluated on images right above the iliac crest,
on the last slice,
from cranial to caudal,
not showing the iliac bone,
thus imitating the algorithm used for the measurements performed in both standing and supine position.
The measurements and estimations done in the cross-sectional images were performed blinded to the real waist circumference.
The observers using the RAIM ALMA and the Osirix software were independent and blinded to each other’s evaluations.
Wilcoxon,
Q-Q plot,
and Bland-Altman analysis were used.