求翻译：对78例患者的颈动脉粥样硬化斑块进行常规二维灰阶超声、彩色多普勒超声及造影检查。其中急性脑梗死患者47例，非脑梗死患者31例。是什么意思？

Conventional two-dimensional gray scale ultrasound, color Doppler ultrasound and angiography in 78 cases of patients with carotid artery atherosclerotic plaque. In patients with acute cerebral infarction in 47 cases, 31 cases of non-patients with cerebral infarction.

Of the 78 cases of carotid artery atherosclerosis blocks for general 2D gray-scale ultrasound, color Doppler ultrasound and contrast. In which acute cerebral infarction patients 47, 31 non-Cerebral infarct patients.

Carries on the conventional two-dimensional gray scale to 78 example patient's neck atherosclerosis mottling supersonic, colored Doppler supersonic and the radiography inspection.In which acute brain stem dead patient 47 examples, non-brain stem dead patient 31 examples.

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