Hu H H, Luo C L, Sheng W Y, Teng M M, Wong W J, Luk Y O
Neurological Institute, Veterans General Hospital-Taipei, Yang-Ming Medical College, Taiwan, Republic of China.
AJNR Am J Neuroradiol. 1995 Mar;16(3):591-8.
To describe and evaluate an application of sonography, transorbital color Doppler flow imaging of the carotid siphon and major intracranial arteries, and to compare it with transtemporal color Doppler flow imaging.
The carotid siphon and major arteries at the base of the brain of 50 healthy volunteers were screened using the transorbital color Doppler flow sonography. These arteries were also studied by a transtemporal approach for comparison. In 5 volunteers, MR images in special inclination planes were obtained and compared with the transorbital color-coded Doppler flow images.
The B-mode image of the orbit and intracranial anatomic structures, in addition to the color-coded flow images, provided an unambiguous identification of the carotid siphon and major intracranial arteries. The failure rate was lower when using the transorbital approach than when using the transtemporal approach in identifying the anterior cerebral artery (17% versus 32%). Color Doppler flow imaging using the transtemporal approach was better for the middle cerebral artery, whereas color Doppler flow imaging using the transorbital approach was better for the anterior cerebral artery (contralateral). The Doppler incident angles using the transorbital approach were better for the carotid siphon and anterior cerebral artery (contralateral).
Transorbital color Doppler flow imaging, when used in conjunction with the transtemporal examination, can add information concerning the major arteries at the base of the brain.
描述并评估经眶彩色多普勒血流成像对颈内动脉虹吸部及主要颅内动脉的应用，并将其与经颞彩色多普勒血流成像进行比较。
使用经眶彩色多普勒超声对50名健康志愿者的颈内动脉虹吸部及脑底部主要动脉进行筛查。同时采用经颞方法对这些动脉进行研究以作比较。对5名志愿者获取特殊倾斜平面的磁共振图像，并与经眶彩色编码多普勒血流图像进行比较。
除彩色编码血流图像外，眼眶及颅内解剖结构的B超图像能清晰识别颈内动脉虹吸部及主要颅内动脉。经眶法在识别大脑前动脉时的失败率低于经颞法（分别为17%和32%）。经颞法彩色多普勒血流成像对大脑中动脉效果更佳，而经眶法彩色多普勒血流成像对大脑前动脉（对侧）效果更佳。经眶法的多普勒入射角对颈内动脉虹吸部及大脑前动脉（对侧）更有利。
经眶彩色多普勒血流成像与经颞检查联合使用时，可增加有关脑底部主要动脉的信息。
