Purpose

To compare the accuracy of non-electrocardiogram (ECG)-gated CT angiography (CTA), single-diastolic-phase ECG-gated CTA, and full-phase ECG-gated CTA in detecting the intimal tear (IT) in aortic dissection (AD) and ulcer-like projection (ULP) in intramural hematoma (IMH).

Materials and methods

A total of 81 consecutive patients with AD and IMH of the thoracic aorta were included in this single-center retrospective study. Non-ECG-gated CTA, single-diastolic-phase ECG-gated CTA, and full-phase ECG-gated CTA were used to detect the presence of the IT and ULP in thoracic aortic regions including the ascending aorta, aortic arch, and proximal and distal descending aorta.

Results

The accuracy of detecting the IT and ULP was significantly greater using full-phase ECG-gated CTA (88% [95% CI: 100%, 75%]) than non-ECG-gated CTA (72% [95% CI: 90%, 54%], P = 0.001) and single-diastolic-phase ECG-gated CTA (76% [95% CI: 93%, 60%], P = 0.008).

Conclusion

Full-phase ECG-gated CTA is more accurate in detecting the IT in AD and ULP in IMH, than non-ECG-gated CTA and single-diastolic-phase ECG-gated CTA.

中文翻译：

---

检测主动脉夹层内膜撕裂和壁内血肿的溃疡样突起：全期回顾性ECG门控CT血管造影的实用性。

目的

比较非心电图（ECG）门控CT血管造影（CTA），单舒张期ECG门控CTA和全相ECG门控CTA在检测主动脉夹层（AD）内膜撕裂（IT）时的准确性）和壁内血肿（IMH）中的溃疡样突起（ULP）。

材料和方法

这项单中心回顾性研究共纳入了81位连续的胸主动脉AD和IMH患者。使用非ECG门控CTA，单舒张期ECG门控CTA和全相ECG门控CTA来检测胸主动脉区域（包括升主动脉，主动脉弓和近端）中IT和ULP的存在和远端降主动脉。

结果

使用全阶段ECG门控CTA（88％[95％CI：100％，75％]）检测IT和ULP的准确性明显高于非ECG门控CTA（72％[95％CI：90]） ％，54％]，P  = 0.001）和单舒张期ECG门控CTA（76％[95％CI：93％，60％]，P  = 0.008）。

结论

与非ECG门控CTA和单舒张期ECG门控CTA相比，全相ECG门控CTA可以更准确地检测AD和IMH中的ULP中的IT。