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基于雙源CT不同成像技術(shù)對冠脈CTA的檢查效率和圖像質(zhì)量的影響

2020-08-27 01:04龔萬灃敖煒群賈玉柱
中國醫(yī)藥導(dǎo)報(bào) 2020年19期
關(guān)鍵詞:輻射劑量圖像質(zhì)量

龔萬灃 敖煒群 賈玉柱

[摘要] 目的 探討基于雙源CT不同技術(shù)手段對冠脈CT血管造影(CTA)檢查效率和質(zhì)量的影響。 方法 收集2018年6月~2019年10月在浙江省立同德醫(yī)院冠脈CTA患者107例,采用簡單隨機(jī)分組方法將其分為A組(55例,采用小劑量測試技術(shù))及B組(52例,采用造影劑自動(dòng)追蹤技術(shù))。記錄兩組患者年齡、體重指數(shù)(BMI)、心率、輻射劑量及檢查時(shí)間,測量兩組患者圖像信噪比(SNR)、對比噪聲(CNR)及CT值,評價(jià)并比較兩組患者冠脈的圖像質(zhì)量。結(jié)果 兩組患者年齡、BMI、心率、容積CT劑量指數(shù)、有效劑量、冠脈不同節(jié)段CT、主動(dòng)脈根部及冠脈各節(jié)段SNR比較,差異無統(tǒng)計(jì)學(xué)意義(P > 0.05)。B組右冠遠(yuǎn)段及回旋支遠(yuǎn)段CNR優(yōu)于A組,差異有統(tǒng)計(jì)學(xué)意義(P < 0.05)。兩組患者圖像質(zhì)量評級(jí)比較,差異無統(tǒng)計(jì)學(xué)意義(P > 0.05)。B組檢查時(shí)間顯著短于A組,差異有高度統(tǒng)計(jì)學(xué)意義(P < 0.01)。 結(jié)論 造影劑自動(dòng)追蹤技術(shù)能在保證圖像質(zhì)量的前提下提高檢查效率。

[關(guān)鍵詞] CT血管造影技術(shù);體層攝影技術(shù);檢查效率;輻射劑量;圖像質(zhì)量

[中圖分類號(hào)] R541.4 ? ? ? ? ?[文獻(xiàn)標(biāo)識(shí)碼] A ? ? ? ? ?[文章編號(hào)] 1673-7210(2020)07(a)-0020-04

[Abstract] Objective To investigate the effects of different techniques based on dual-source CT on examination efficiency and quality of coronary CT angiography (CTA). Methods A total of 107 patients undergoing coronary CTA in Tongde Hospital of Zhejiang Province from June 2018 to October 2019 were collected, while they were divided into group A (55 cases, using low-dose test technology) and group B (52 cases, using contrast agent automatic tracking technology) by simple random grouping method. The age, body mass index (BMI), heart rate, radiation dose and examination time of the two groups were recorded, and the image signal-to-noise ratio (SNR), contrast noise (CNR) and CT values of the two groups were measured, while the coronary artery image quality were evaluated and compared. Results There were no significant differences in age, BMI, heart rate, volume CT dose index, effective dose, CT of different segments of coronary artery, SNR of aortic root and each segment of coronary artery between the two groups (P > 0.05). The CNR of distal right coronary artery and distal left circumflex artery in group B were superior to group A, and the differences were statistically significant (P < 0.05). There was no statistically significant difference in image quality ratings between the two groups (P > 0.05). The examination time of group B was significantly shorter than that of group A, and the difference was highly statistically significant (P < 0.01). Conclusion Contrast agent automatic tracking technology can improve the inspection efficiency under the premise of ensuring image quality.

[Key words] CT angiography; Tomography; Examination efficiency; Radiation dose; Image quality

隨著人口老齡化進(jìn)程加速,中國心血管病危險(xiǎn)因素流行趨勢明顯,導(dǎo)致心血管病發(fā)病人數(shù)持續(xù)增加[1]。冠脈CT血管造影(CTA)作為一項(xiàng)無創(chuàng)檢查,逐漸成為排除冠脈狹窄的首選檢查[2-4]。隨著檢查需求日益增長,患者行冠脈CTA檢查等待的時(shí)間延長。怎樣在保證圖像質(zhì)量及輻射可控的前提下提高檢查效率,是當(dāng)前面臨的主要問題。本研究基于雙源CT冠脈CTA,對不同技術(shù)進(jìn)行比較,以期得到最佳解決方案。

本研究亦存在一些不足之處,缺少冠脈DSA“金標(biāo)準(zhǔn)”對照、沒有計(jì)入檢查前準(zhǔn)備時(shí)間、樣本量相對較小,還需進(jìn)行大樣本研究。

綜上所述,造影劑自動(dòng)追蹤技術(shù)能夠在滿足圖像質(zhì)量和輻射劑量可控的前提下縮短檢查時(shí)間,提高檢查效率。

[參考文獻(xiàn)]

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(收稿日期:2020-02-26)

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