Item type |
学内発行雑誌 / Departmental Bulletin Paper(1) |
公開日 |
2018-08-23 |
タイトル |
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タイトル |
Evaluation of Deep Venous Thrombosis Using Dual-energy CT |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ |
departmental bulletin paper |
著者 |
YAMANA, Keita
OHGIYA, Yoshimitsu
TASHIRO, Yuki
KURODA, Hanako
TOYOFUKA, Kosuke
GOKAN, Takehiko
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書誌情報 |
The Showa University journal of medical sciences
巻 30,
号 1,
p. 107-112,
発行日 2018-03
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Deep vein thrombosis (DVT) was evaluated using virtual monochromatic imaging (VMI) with dual-energy analysis. We used data from 29 patients who were imaged at Showa University Hospital using the pulmonary embolism (PE)/DVT protocol and evaluated based on the diagnostic utility of VMI with dual-energy analysis. By VMI, we compared the computed tomography (CT) values of the femoral veins on both sides and the surrounding muscle tissues at 40keV and conventional imaging; two radiologists performed the visual evaluation in three stages. We also evaluated the CT values of thrombi for cases with DVT. We conducted a retrospective cohort study on 29 patients (18 males and 11 females) with a mean age of 66.8 (range: 31?86) years. DVT was confirmed in four of the subjects (13.7%). Visual evaluation confirmed a significant difference between the CT values at 40keV and with conventional imaging (2.76 vs. 1.81;?P<0.05). CT values in the femoral vein were 274.67 (range: 186.35?63.31) Hounsfield units (HU) at 40keV and 109.46 (range: 74.54?155.66) HU with conventional imaging (P<0.05). Contrast-to-noise ratios (CNRs) [(femoral vein CT value?adductor muscle CT value)/adductor muscle standard deviation (SD)] were 11.77 (range: 3.93?26.33) HU at 40keV and 9.87 (range: 1.28?27.56) HU with conventional imaging (P<0.05). The thrombus/femoral vein ratio (CT value) was 0.34 at 40keV and 0.59 with conventional imaging, while the CNR was 17.52 at 40keV and 4.32 with conventional imaging; both differences were significant. Low-voltage contrast CT is beneficial for enhancing images of veins and it may also be very useful for detecting DVT. |
DOI |
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関連識別子 |
10.15369/sujms.30.107 |
出版者 |
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出版者 |
Showa University Society |
ISSN |
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収録物識別子 |
0915-6380 |
著者版フラグ |
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出版タイプ |
VoR |