[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.7742/jksr.2019.13.7.961

Assessment of Image Quality of Dual Energy 256 MDCT Technique Focused on keV Changes for MCA Stroke in Cerebral Angiography : Single Energy CT Standard Reference Mode

Goo, Eun-Hoe (Department of Radiological Science, Cheongju University)

Publication Information

Journal of the Korean Society of Radiology / v.13, no.7, 2019 , pp. 961-968 More about this Journal

Abstract

The purpose of this study was to evaluate the usefulness of cerebral angiography in each energy level by using dual energy technique in CT. Methods were performed on 15 DE images and SE images of CT angiography. For the analysis of images, mean value, standard deviation, SNR and CNR value were determined by setting ROI on MCA, brain parenchyma tissue, and back ground. As a result of concurrent visual evaluation with Likert 5 point scale, the clearest MCA image was confirmed at DE 40 keV and SE 120 kVp(p>0.05). The SNR value of the SE image was measured to be similar to the 40 keV energy level of the DE image. The low energy level image of 40 keV and 50 keV was measured with a high SNR and the contrast ratio was higher than that of the high energy image.

Keywords

CT subtraction technique; mAs; Exposure Dose; 3D Cerebral Angiography; Dual Energy CT;

Citations & Related Records

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