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KMID : 1151820190130050713
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Journal of the Korean Society of Radiology
2019 Volume.13 No. 5 p.713 ~ p.720
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Fundamental Study of Relative Measurement for Accurate Measurement of Stent Size in Computed Tomography Angiography
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Lee Seung-Young
Hong Joo-Wan
Kang Su-Mi
Kim Su-Bin
Jeon Sang-Hoon
Heo Yeong-Cheol
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Abstract
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The purpose of this study was to propose a new measurement method for accurate measurement of vessel diameter in computed tomography angiography(CTA). CTA test was performed after non-ionic iodine contrast agent was flowed at a constant rate to self-maded perfusion phantom. After obtaining raw data, images were reconstructed with multi-planar reconstruction(MPR) and maximal intensity projection(MIP). Diameters of vascular models were measured for each technique. Relative and conventional measurements were then compared. The mean diameter of the vascular model was closer to the actual measurement when relative measurement was used compared to that when conventional measurement was used both in MPR and MIP. Relative measurements of MPR and MIP were closer to actual measurement than those of conventional measurement (34% VS, 24%, p<0.05). The relative measurement method proposed in this study was closer to the actual measurement than the conventional measurement method. However, both test methods were still larger than actual results. Therefore, further study of relative measurement method is needed using this study as basic data.
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KEYWORD
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Cerebrovascular disorders, Computed Tomography Angiography, Coronary Stenosis, Diagnostic Imaging, Stents
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