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Objective: We investigated the appropriate reconstruction interval required togenerate optimal quality images of the coronary veins and to evaluate the sizeof each vein at the systolic and diastolic phases using coronary computed tomographyCT venography. Methods: CoronaryCT venograms obtained from 30 patients using 64-slice CT were reconstructedat 0% to 90% of the cardiac cycle in 10% increments. Two radiologists assessedthe image quality of the anterior interventricular vein AIV, the greatcardiac vein GCV, the posterior vein of the left ventricle PVLV, the posteriorinterventricular vein PIV, the coronary sinus CS and the small cardiac veinSCV. We determined the sizes of measurable CS n = 16 and GCV n = 12 atthe end systolic and mid diastolic phases. Results: The most appropriate reconstruction point for all coronary veins turned out tobe at the mid-diastolic phase. The size of the CS and GCV was greater at a 30%than that at a 70% R-R interval p < 0.01. Conclusions: Image quality was optimal at the mid-diastolicphase for each coronary vein, but the sizes of the coronary veins varied duringthe cardiac cycle. The cardiac cycle must be considered when measuring thesizes of cardiac veins.

KEYWORDS

CT; Coronary; Vein; Reconstruction; Styling

Cite this paper

Y. Ohta, S. Fujii, S. Kakite, E. Mizuta, M. Hashimoto, T. Kaminou and T. Ogawa -Evaluation of the Optimal Image Reconstruction Interval for Noninvasive Coronary 64-Slice Computed Tomography Venography,- Open Journal of Radiology, Vol. 3 No. 2, 2013, pp. 66-72. doi: 10.4236-ojrad.2013.32010.





Autor: Yasutoshi Ohta, Shinya Fujii, Suguru Kakite, Einosuke Mizuta, Masayuki Hashimoto, Toshio Kaminou, Toshihide Ogawa

Fuente: http://www.scirp.org/



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