發(fā)布時(shí)間：2018-05-16 00:11

  本文選題：體層攝影術(shù) + X線計(jì)算機(jī)　； 參考：《放射學(xué)實(shí)踐》2015年11期

【摘要】：目的:探討CARE-kV技術(shù)在下肢動(dòng)脈CT血管成像中(CTA)的應(yīng)用價(jià)值。方法:將78例下肢動(dòng)脈CTA患者隨機(jī)分為A組(CARE-kV組)、B組(根據(jù)體重指數(shù)確定kV值組)各39例,分析比較兩組圖像各測量點(diǎn)的CT值、CNR、CTDIvol、DLP、ED,并對重建圖像質(zhì)量、血管邊緣形態(tài)、血管內(nèi)對比劑充盈情況進(jìn)行評估分析。結(jié)果:A、B兩組圖像各測量點(diǎn)平均CT值(430.02和374.11HU,P=0.10)、CNR(26.60±11.20、29.86±9.95,P=0.13)、圖像主觀評分VR(3.38±0.59、3.31±0.61,P=0.58)、MIP(3.79±0.40、3.62±0.49,P=0.08)的差異沒有統(tǒng)計(jì)學(xué)意義(P0.05),A、B兩組間CTDIvol(4.41±1.32、6.19±3.19,P=0.02)、DLP(533.59±185.66、711.29±388.63,P=0.03)、ED(8.00±2.76、10.66±5.82,P=0.03)的差異具有統(tǒng)計(jì)學(xué)意義(P0.05)。結(jié)論:CARE-kV技術(shù)應(yīng)用在下肢動(dòng)脈CTA的檢查中,既有效的降低了患者的輻射劑量又能保證圖像質(zhì)量,使管電壓的選擇更加合理、智能。
[Abstract]:Objective: to evaluate the value of CARE-kV in CT angiography of lower extremity. Methods: Seventy-eight patients with CTA of lower extremity artery were randomly divided into two groups: group A (39 cases in CARE-kV group) and group B (39 cases in group B based on body mass index). The CT values of each measuring point of the two groups were analyzed and compared, and the reconstruction image quality and the shape of blood vessel edge were analyzed and compared. The filling status of intravascular contrast agent was evaluated and analyzed. 緇撴灉:A,B涓ょ粍鍥懼儚鍚勬祴閲忕偣騫沖潎CT鍊，

本文編號：1894568