Noninvasive identification of peripheral vessels of oral and maxillofacial regions by using electrocardiography-triggered three-dimensional fast asymmetric spin-echo sequences
Noninvasive identification of peripheral vessels of oral and maxillofacial regions by using electrocardiography-triggered three-dimensional fast asymmetric spin-echo sequences
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DOI：
10.1016/j.tripleo.2011.02.047
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发表时间：
2011-10-01
期刊：
影响因子：
--
通讯作者：
Morimoto, Yasuhiro
中科院分区：
文献类型：
--
作者：
Tanaka, Tatsurou;Oda, Masafumi;Morimoto, Yasuhiro
目标。本研究的目的是评价一种新技术--新鲜血液成像(FBI)在不使用造影剂的情况下对口腔颌面部较薄的主要外周血管的三维成像效果。第二个目标是使用FBI和减影技术相结合的方法区分动脉和静脉。研究设计。将20名健康受试者的FBI图像与三维相位对比磁共振血管成像(MRA)图像进行比较。对所有图像进行主要血管的可视化和图像质量评分。此外，应用适当的血流干扰梯度脉冲来区分周围血管系统中的动脉和静脉，使用FBI序列和收缩和舒张期触发图像之间的减影。对于细小血管的显示，FBI的MRA评分明显好于相位对比法，而对主干血管的显示评分相同。此外，我们还成功地利用合理的采集时间成功地区分了动脉和静脉。我们的初步经验表明，FBI可能是一种有用的方法来识别三维血管系统，并在口腔和颌面部较细的外周血管中区分动脉和静脉，而不需要使用造影剂。《口腔外科》《口腔医学》《口腔病理学》《口腔放射科》2011；112：493-501)
Objectives. The aim of this study was to evaluate the 3-dimensional images of thinner main peripheral vessels in oral and maxillofacial regions made without contrast medium by using a new technique, fresh blood imaging (FBI). A second objective was to discern arteries from veins by using the combination of FBI with the subtraction technique.Study design. Images from FBI were compared with those from 3-dimensional phase-contrast magnetic resonance angiography (MRA) of blood vessels in 20 healthy subjects. All images were scored for visualization and image quality of the main blood vessels. In addition, appropriate flow-spoiled gradient pulses were applied to differentiate arteries from veins in the peripheral vasculature using a combination of FBI sequences and subtraction between systole-and diastole-triggered images.Results. The scores of MRA using FBI for the visualization of thin blood vessels were significantly better than those using phase contrast, whereas scores for the visualization of main blood vessels were equal. Additionally, we succeeded in our initial attempt to differentiate arteries from veins with a reasonable acquisition time.Conclusions. Our initial experience shows that FBI could be a useful method to identify 3-dimensional vasculature and to differentiate arteries from veins among thinner peripheral vessels in the oral and maxillofacial regions without using contrast medium. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011; 112: 493-501)