Clinical history Of Patient
This 66-year-old female presented at PRC Shenton House with a new onset of exertional dyspnea. A transesophageal echocardiogram (TEE) showed a partial filling defect suspicious for stenosis in the proximal LAD (Figure 2a), and coronary CTA was requested for confirmation. The technologist used the Ingenuity CT system to perform the exam.
Image scan parameters
* AAPM Technical Report 96
A predominantly non-calcified plaque was seen in the proximal segment of the LAD causing 70-90% stenosis, correlating with the echo findings (Figure 2b, green arrow). Additionally, a mixed plaque was also seen in the mid-segment of the RCA, causing 25-50% stenosis, and in the distal segment with <25% stenosis (Figure 2c, green arrows). The LAD was subsequently stented.
The overall image quality was good, with a contrast enhancement of 591 HU in the aortic root.
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Evaluation of Plaque in segments of the LAD and RCA
in CT Cardiac