本文選題：雙源CT + 雙能量��； 參考：《實(shí)用醫(yī)學(xué)雜志》2017年09期

【摘要】：目的:探討雙源CT雙能量虛擬平掃(VNC)在診斷肝臟常見良性病變的價(jià)值及限度。方法:利用雙源CT對(duì)226例上腹部病變患者行常規(guī)平掃(CNC)及動(dòng)脈期、門脈期雙能量掃描,將門脈期數(shù)據(jù)經(jīng)Liv-er VNC軟件處理,獲得VNC圖像。對(duì)比分析其中117例肝臟常見良性病變?cè)诔Ｒ?guī)平掃(CNC)及虛擬平掃(VNC)中的檢出數(shù)量,并比較單能模式與雙能模式下的輻射劑量。結(jié)果:虛擬平掃檢出鈣化或結(jié)石58個(gè)(85.3%)、血管瘤28個(gè)(73.6%)低于常規(guī)平掃68個(gè)(100.0%)、37個(gè)(97.3%)(P0.05);虛擬平掃檢出囊腫68個(gè)(95.8%)稍高于常規(guī)平掃65個(gè)(91.5%),檢出脂肪肝12例(85.7%)稍低于常規(guī)平掃14例(100.0%)(P0.05);雙能模式下CTDI、DLP及ED均低于單能模式,差異有統(tǒng)計(jì)學(xué)意義(P0.05)。結(jié)論:虛擬平掃對(duì)血管瘤、鈣化或結(jié)石的檢出低于常規(guī)平掃,對(duì)囊腫及脂肪肝的檢出無差異。VNC技術(shù)可減低CT檢查的輻射劑量,具有潛在的臨床應(yīng)用價(jià)值。
[Abstract]:Objective: to evaluate the value and limitation of dual source CT dual energy virtual plain scan (VNC) in the diagnosis of common benign liver lesions. Methods: 226 patients with epigastric lesions were examined by dual source CT with conventional plain scan (CNC), arterial phase and portal phase dual energy scanning. The portal phase data were processed by Liv-er VNC software and VNC images were obtained. A comparative analysis was made of 117 cases of common benign liver lesions detected in conventional plain scan (CNC) and virtual plain scan (VNC), and the radiation doses in monoenergetic mode and dual energy mode were compared between conventional plain scan (CNC) and virtual plain scan (VNC). Results: 58 cases (85.3%) of calcification or calculus were detected by virtual plain scan, 28 (73.6%) of hemangioma were lower than that of routine plain scan (100.0%), 37 (97.3%) were detected by virtual plain scan (P0.05), 68 (95.8%) of cysts detected by virtual plain scan were slightly higher than 65 (91.5%) of routine plain scan, 12 cases (85.7%) of fatty liver were slightly lower than that of routine plain scan (85.7%). 14 cases (100.0%) (P0.05), CTDID DLP and Ed were lower than those in monoenergetic mode, The difference was statistically significant (P0.05). Conclusion: the detection of hemangioma, calcification or stone by virtual plain scan is lower than that by conventional plain scan. There is no difference in detecting cyst and fatty liver. VNC technique can reduce the radiation dose of CT examination, and has potential clinical application value.
【作者單位】： 遵義醫(yī)學(xué)院附屬醫(yī)院影像科;貴州省人民醫(yī)院放射科;
【基金】：貴州省科技廳社會(huì)發(fā)展科技攻關(guān)計(jì)劃項(xiàng)目(編號(hào):黔科合SY字[2013]3038號(hào))
【分類號(hào)】：R575;R816.5

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