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Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens
Published on: April 18, 2013
Contrast dose determination using effective diameter in patients of unknown weight for dynamic computed tomography of
Masaaki Fukunaga1, Shota Ichikawa2,3, Koki Ichijiri4
1Department of Radiological Technology, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, 710-8602, Okayama, Japan. mf12895@kchnet.or.jp.
Purpose:
The purpose of this study was to validate the accuracy of a method for determining the iodine contrast dose using effective diameter (Deff) when performing dynamic computed tomography (CT) scans of the upper abdomen in patients with unknown body weight (BW).
Methods:
Deff was measured at the heart, at the right diaphragm upper edge, and at the right pulmonary rib diaphragm levels in the localizer radiograph and axial images. Correlation coefficients between Deff and BW were determined for each cross section.
Results:
Deff_axial and BW showed the highest correlation at the right diaphragm upper edge level in men (rS = 0.862) and at the right pulmonary rib diaphragm level in women (rS = 0.890).
Conclusions:
The BW estimated from Deff showed a strong correlation with measured BW and may serve as a practical alternative in cases where BW is unknown.
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