Nakagawa Junichiro, Tasaki Osamu, Watanabe Yoshiyuki, Azuma Takeo, Ohnishi Mitsuo, Ukai Isao, Tahara Kenichi, Ogura Hiroshi, Kuwagata Yasuyuki, Hamasaki Toshimitsu, Shimazu Takeshi
From the *Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka; †Department of Emergency Medicine, Unit of Clinical Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki; ‡Department of Diagnostic and Interventional Radiology, Osaka University Graduate School of Medicine, Osaka; §Division of Radiology, Department of Medical Technology, Osaka University Hospital, Osaka; ∥Department of Emergency Medical Center, Hyogo Prefectural Nishinomiya Hospital, Hyogo; and ¶Department of Biomedical Statistics, Osaka University Graduate School of Medicine, Osaka, Japan.
J Comput Assist Tomogr. 2013 Sep-Oct;37(5):755-9. doi: 10.1097/RCT.0b013e31829c3f76.
Electrocardiogram-gated imaging combined with multi-detector row computed tomography (MDCT) has reduced cardiac motion artifacts, but it was not practical in the emergency setting. The purpose of this study was to evaluate the ability of a high-pitch, 128-slice dual-source CT (DSCT) scanner to reduce motion artifacts in patients admitted to the emergency room.
This study comprised 100 patients suspected of having thoracic aorta lesions. We examined 47 patients with the 128-slice DSCT scanner (DSCT group), and 53 patients were examined with a 64-slice MDCT scanner (MDCT group). Six anatomic areas in the thoracic aorta were evaluated.
Computed tomography images in the DSCT group were distinct, and significant differences were observed in images of all areas between the 2 groups except for the descending aorta.
The high-pitch DSCT scanner can reduce motion artifacts of the thoracic aorta and enable radiological diagnosis even in patients with tachycardia and without breath hold.
心电图门控成像与多排螺旋计算机断层扫描（MDCT）相结合可减少心脏运动伪影，但在急诊情况下并不实用。本研究的目的是评估高螺距128层双源CT（DSCT）扫描仪减少急诊入院患者运动伪影的能力。
本研究纳入100例疑似胸主动脉病变的患者。我们使用128层DSCT扫描仪检查了47例患者（DSCT组），并使用64层MDCT扫描仪检查了53例患者（MDCT组）。对胸主动脉的六个解剖区域进行了评估。
DSCT组的计算机断层扫描图像清晰，除降主动脉外，两组所有区域的图像均观察到显著差异。
高螺距DSCT扫描仪可减少胸主动脉的运动伪影，即使对于心动过速且未屏气的患者也能进行放射学诊断。
