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KMID : 1149020200220020053
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Journal of Korean Society of Computed Tomographic Technology
2020 Volume.22 No. 2 p.53 ~ p.59
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Image evaluation of Dual-Energy CT Pulmonary Angiography ; Using Linear Blended and Virtual Monoenergetic Images Plus Reconstruction
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Byeon Seong-Eun
Kim Jeong-Dan
Lee In-Suk
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Abstract
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Purpose: In order to evaluate the usefulness of the VMI + (Virtual Monoenergetic Images Plus) reconstruction by comparing the LB(Linear Blended) images of DE-CTPA with enhanced pulmonary vessels.
Material and method: For 45 patients examined with CT Pulmonary angiography using DECT, LB images and images of VMI + 40(40keV), 50(50keV), 60(60keV), 70(70keV) were implemented and HU was used as data with the main pulmonary artery as ROI.
Result: The images of VMI + 40, 50, 60, 70 showed significantly higher HU at low energy levels, with 1241.66HU, 828.38HU, 575.61HU and 420.75HU, compared with 393.26HU in LB images. The VMI + technique reduces images noise(deviation) from low energy levels, reducing image quality degradation.
Conclusion: - In the LB images of DE-CTPA and images using VMI + techniques, the results were found to be useful in evaluating contrasted pulmonary blood vessels.I n addition, the use of VMI + techniques can help patients with neuropathic disorders with good images and accurate diagnosis by using a small amount of contrast medium.
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KEYWORD
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DECT, LB, , VM I +, HU
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