Ariji Y, Kimura Y, Gotoh M, Sakuma S, Zhao Y P, Ariji E
Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin Universityn Nagoya, Japan.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2001 Apr;91(4):472-82. doi: 10.1067/moe.2001.111760.
The purpose of this study was to clarify the normal findings of arteries in and around the masseter muscle and to present their pathologic changes with the use of color Doppler sonography.
The vascular appearances were examined for the 4 main arteries feeding the masseter muscle in healthy volunteers (n = 38) and patients with inflammation (n = 5) and intramuscular hemangioma (n = 3). The features of these arteries were investigated together with the flow diameter, flow velocities, and arterial resistances. The symmetry indices were also calculated to assess the pathologic changes.
The detection rates of the branch from the transverse facial artery, the masseter artery, and the branch from the maxillary or external carotid artery were 98.7%, 21.1%, and 84.2% in healthy volunteers, respectively. The facial artery that feeds the muscle from the inferior part represented 2 patterns according to anatomic variant: the masseteric branch (22.4%) and the main trunk itself (77.6%). The means of the flow diameter, maximum and minimum velocities, resistive index, and pulsatility index in healthy subjects were 1.8 mm, 24.6 cm/s, 5.1 cm/s, 0.80, and 2.51, respectively. In most of the patients with symptoms, the symmetry indices of all measurement values increased in comparison with those of healthy volunteers.
Color Doppler sonography is useful in describing the arteries in and around the masseter muscle and has the potential of being used to depict the pathologic changes.
本研究旨在阐明咬肌及其周围动脉的正常表现，并利用彩色多普勒超声呈现其病理变化。
对健康志愿者（n = 38）、炎症患者（n = 5）和肌内血管瘤患者（n = 3）中为咬肌供血的4条主要动脉的血管表现进行检查。研究这些动脉的特征，同时测量血流直径、流速和动脉阻力。还计算对称指数以评估病理变化。
在健康志愿者中，来自面横动脉的分支、咬肌动脉以及来自上颌动脉或颈外动脉的分支的检出率分别为98.7%、21.1%和84.2%。从下方为肌肉供血的面动脉根据解剖变异表现为两种模式：咬肌支（22.4%）和主干本身（77.6%）。健康受试者的血流直径、最大和最小流速、阻力指数及搏动指数的平均值分别为1.8 mm、24.6 cm/s、5.1 cm/s、0.80和2.51。在大多数有症状的患者中，与健康志愿者相比，所有测量值的对称指数均升高。
彩色多普勒超声有助于描述咬肌及其周围的动脉，并且有可能用于描绘病理变化。
