Department of Diagnostic and Interventional Radiology, Clinic of the Goethe University, Haus 23C UG, Theodor-Stern-Kai 7, 60590, Frankfurt, Germany.
Department of Diagnostic and Interventional Radiology, Cairo University Hospital, Cairo, Egypt.
Radiol Med. 2016 Jul;121(7):573-9. doi: 10.1007/s11547-016-0634-5. Epub 2016 Apr 21.
Evaluation of the intimal flap visibility comparing 2nd and 3rd generation dual-source high-pitch CT.
Twenty-five consecutive patients with aortic dissection underwent CT angiography on a second and third generation dual-source CT scanner using prospective ECG-gated high-pitch dual-source CT acquisition mode. Contrast material, saline flush and flow rate were kept equal for optimum comparability. The visibility of the intimal flap as well as the delineation of the different vascular structures was evaluated.
In 3rd generation dual-source high-pitch CT we could show a significant improvement of intimal flap visibility in aortic dissection. Especially, the far end of the dissection membrane could be better evaluated in 3rd generation high-pitch CT, reaching statistical significance (P < 0.01).
3rd Generation high-pitch CT angiography shows a better delineation of the aortic intimal flap in a small patient cohort, especially in the far ends of the dissection membrane. This might be due to higher tube power in this CT generation. However, to generalise these findings larger trials are needed.
比较第二代和第三代双源双能 CT 评估内膜瓣可视性。
25 例连续主动脉夹层患者在第二代和第三代双源 CT 扫描仪上进行 CT 血管造影检查，采用前瞻性 ECG 门控双能高心率 CT 采集模式。为了达到最佳可比性，使造影剂、盐水冲洗和流速保持相等。评估内膜瓣的可视性以及不同血管结构的描绘。
在第三代双源高心率 CT 中，我们可以看到主动脉夹层内膜瓣可视性的显著改善。特别是，在第三代高心率 CT 中，可以更好地评估夹层膜的远端，达到统计学意义（P<0.01）。
第三代高心率 CT 血管造影术在小患者队列中显示出更好的主动脉内膜瓣描绘，特别是在夹层膜的远端。这可能是由于这一代 CT 的管功率更高。然而，为了推广这些发现，需要进行更大规模的试验。
