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Diagnostic Performance of Dual-Layer Computed Tomography for Deep Vein Thrombosis in Indirect Computed Tomography Venography by Tanoue, Shota; Nakaura, Takeshi; Iyama, Yuji; Iyama, Ayumi; Nagayama, Yasunori; Yoshida, Morikatsu; Yamashita, Yasuyuki is a Medicine article available to read on EtoBox.
What is Diagnostic Performance of Dual-Layer Computed Tomography for Deep Vein Thrombosis in Indirect Computed Tomography Venography about?
## Background: The aim of this study was to evaluate the quality and diagnostic performance of virtual monochromatic images (vmi) obtained with dual-layer dual-energy computed tomography (dl-dect) during indirect ct venography (ctv) for deep vein thrombosis (dvt).methods and results:this retrospective study was approved by the institutional review board, which waived the requirement for informed consent. we retrospectively enrolled 45 patients who underwent ctv with dl-dect, and vmi were retrospectively generated. we compared the venous attenuation, noise, contrast, and contrast-to-noise ratio (cnr) between vmi with the highest cnr and conventional ct on paired t-test. furthermore, we compared the pooled area under the curve (auc) of each technique with delong's test in 34 patients who underwent color doppler ultrasonography. the 40-kev vmi had the best cnr. the noise was significantly lower on 40-kev (9.7±2.5 hu) than on 120-kvp vmi (10.5±2.5 hu; p<0.01). the contrast (120 kvp, 38.2±15.3 hu vs. 40 kev, 131.6±43.6 hu) and cnr (120 kvp, 3.8±1.7 vs. 40 kev, 14.4±6.1) were significantly higher in 40-kev vmi than in 120-kvp vmi (p<0.01). furthermore, the pooled auc was significantly hi
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- Author
- Tanoue, Shota; Nakaura, Takeshi; Iyama, Yuji; Iyama, Ayumi; Nagayama, Yasunori; Yoshida, Morikatsu; Yamashita, Yasuyuki
- Publisher
- Japan Science and Technology Information Aggregator, Electronic; The Japanese Circulation Society; Japanese Circulation Society/Nihon Junkanki Gakkai; Kyoto: Japanese Circulation Society; Japanese Circulation Society (ISSN 1346-9843)
- Published
- 2020
- Language
- EN
- Field
- Medicine (Health Sciences)