Gulses Aydin, Oren Cem, Altug Hasan Ayberk, Ilica Turan, Sencimen Metin
Canakkale Military Hospital, Gokceada Surgical Infirmary, Canakkale, Turkey.
J Craniofac Surg. 2012 Sep;23(5):1465-7. doi: 10.1097/SCS.0b013e3182575793.
The course of the second part of the maxillary can vary among different races. The aim of this study was to evaluate the relation between the maxillary artery and the lateral pterygoid muscle in a white population sample on computed tomographic (CT) angiograms.
We retrospectively reviewed multidetector CT angiograms of 209 patients (134 men and 75 women). The images were taken using a 64-row multidetector CT scanner. The imaging parameters were 0.5 × 64-mm slice thickness, 0.5- or 0.3-mm increment, 120 kV, 250 mA s, 0.5-second rotation time, 0.641 pitch, and 512 matrix. The relationship between the pterygoid portion of the maxillary artery and the lateral pterygoid muscle was assessed on axial, sagittal, and coronal multiplanar reformatted images with the Vitrea 2 software program.
A total of 572 maxillary arteries in 286 patients were assessed. Of these maxillary arteries, 418 (68.42%) had a superficial course to the pterygoid muscle and 132 (31.58%) had a deep course. In 165 (78.94%) of 286 patients, there was a cross-lateral symmetry of the course of the artery; that is, both vessels were superficial or deep. In 44 (21.1%) of 209 patients, an asymmetric course was observed.
Because of the incidence of the asymmetric presentations, generalization regarding such a controversial topic should not be based on findings of cadaveric studies and each hemi head should be considered as a single entity. Therefore, advanced imaging systems are useful tools in preoperative planning and play a key role in the avoidance of hemorrhagic complications.
上颌动脉第二部分的走行在不同种族间存在差异。本研究旨在通过计算机断层扫描（CT）血管造影，评估白种人样本中上颌动脉与翼外肌之间的关系。
我们回顾性分析了209例患者（134例男性和75例女性）的多排CT血管造影图像。图像采用64排多排CT扫描仪采集。成像参数为：层厚0.5×64mm，层间距0.5或0.3mm，管电压120kV，管电流250mAs，旋转时间0.5秒，螺距0.641，矩阵512。使用Vitrea 2软件程序在轴位、矢状位和冠状位多平面重组图像上评估上颌动脉翼肌部分与翼外肌的关系。
共评估了286例患者的572条上颌动脉。在这些上颌动脉中，418条（68.42%）走行于翼肌表面，132条（31.58%）走行于翼肌深部。在286例患者中的165例（78.94%）中，动脉走行存在交叉侧对称性，即两侧血管均为浅表或深部走行。在209例患者中的44例（21.1%）中，观察到不对称走行。
由于不对称表现的发生率，关于这一有争议话题的概括不应基于尸体研究的结果，每侧半侧头部应被视为一个单独的实体。因此，先进的成像系统是术前规划的有用工具，在避免出血并发症方面起着关键作用。
