【摘要】：目的探討256排寬體探測(cè)器CT智能心電門控技術(shù)對(duì)不控制心率患者CT冠狀動(dòng)脈成像的圖像質(zhì)量及可診斷性。方法 200例疑似冠心病的患者接受256排寬體探測(cè)器CT冠狀動(dòng)脈成像,采用智能心電門控掃描,根據(jù)掃描患者實(shí)時(shí)心率分成4組,A組(心率≤69次/分)、B組(心率為70~80次/分)、C組(心率為81~90次/分)、D組(心率≥91次/分),每組50例。由2名有心血管CT診斷經(jīng)驗(yàn)的醫(yī)師以盲法對(duì)4組冠狀動(dòng)脈成像的圖像質(zhì)量及可診斷性進(jìn)行評(píng)價(jià),并比較各組的輻射劑量。結(jié)果 4組患者年齡、性別、體質(zhì)量指數(shù)差異無統(tǒng)計(jì)學(xué)意義;圖像質(zhì)量主觀評(píng)分差異有統(tǒng)計(jì)學(xué)意義(P0.05)。200例患者共評(píng)價(jià)600支血管2 575個(gè)節(jié)段,4組圖像節(jié)段水平、患者水平、血管水平的可診斷率差異均無統(tǒng)計(jì)學(xué)意義(P均0.05)。A~D組的有效輻射劑量分別為(1.05±0.48)mSv、(2.41±1.20)mSv、(1.27±0.55)mSv、(2.66±1.12)mSv,差異有統(tǒng)計(jì)學(xué)意義(F=29.22,P0.001)。結(jié)論 Revolution CT寬體探測(cè)器智能心電門控技術(shù)在不同心率患者單個(gè)心動(dòng)周期完成冠狀動(dòng)脈CTA檢查具有可行性,并提高了中高心率患者檢查成功率及圖像質(zhì)量。
[Abstract]:Objective to investigate the image quality and diagnostic value of CT intelligent ECG gating technique for coronary artery imaging in patients with uncontrolled heart rate. Methods 200 patients with suspected coronary heart disease underwent CT coronary artery imaging with 256x wide body detector. According to the real-time heart rate of the patients, they were divided into 4 groups: group A (heart rate 鈮，

本文編號(hào)：2527129