摘要
目的探讨二维灰阶血流显像(B-Flow)技术在评价颅外段颈内动脉狭窄的应用价值。方法设病例组70例、对照组120例(年龄、性别构成比与病例组相当)。分别用二维超声(2D)、彩色多普勒血流显像(CDFI)以及B-Flow进行常规颈动脉检查,重点测量颈内动脉颅外段狭窄血管残余管腔内径并计算狭窄率,颈内动脉颅外段病例组患者行数字减影血管造影(DSA)检查。将超声检查结果与DSA相对照。结果病变处的颈动脉B-Flow表现动脉内膜粗糙、局部增厚或有斑块突入管腔,B-Flow血流在斑块处往往呈涡流改变。病例组与对照组颈动脉内径相比,差异均有显著性(P<0.05)。病例组颈动脉狭窄处内径B-Flow测量值与2D、CDFI测量值差异有显著性(P<0.05)。病例组2D、CDFI、B-Flow 3种方法所测得颈内动脉直径狭窄率与DSA结果均呈显著相关(P<0.05),其中B-Flow与DSA的相关系数最高。结论 B-Flow能保持高帧频、高分辨率,同时显示颈动脉管壁、血流信息及临近组织的解剖关系,并且能清晰显示狭窄处、狭窄后血流状态以及斑块形态。与DSA相对照,在评估颅外段颈内动脉狭窄处内径方面,较2D、CDFI具有更高的优越性和准确性。
Objective To evaluate the value of B - Flow technique in the diagnosis of internal carotid arterial stenosis. Methods 70 patients and 120 healthy persons were exmained by two - dimensional ultrasound（2D）,Color Doppler Flow Imaging（CDFI） and B - Flow.The diameter of the most stenotic lumen and the percentage of stenosis were obtained. The lumen diameters were obtained and compared with Digital Subtraction Angiography（DSA）.Results In the carotid stenotic,the endarterium was rough.There were spots in the conduit and had＂nibbling＂symptom.There was vortex in the lumen of stenotic carotid.The diameters of the most stenotic lumen in patient group were significantly lower than those of ICA in nomal group（P0.05）.The difference of carotid stenotic measurements between B - Flow and 2D、CDFI was significant （P0.05）.The percentage of stenosis of patients made by all sonogrphic techniques were significantly correlated with those made by DSA（P0.05）.However,the coefficient of correlation between DSA and B - Flow was the highest. Conclusion B - Flow enabled simultaneous imaging of the carotid arterial wall,blood flow and tissue with higher spatial resolution and higher frame rate.B - Flow offers simultaneous intra - and post - stenotic flow detection and clear plaque morphology.Compared with DSA,the ultrasound diagnosis of stenosis of the ICA with B - Flow had higher superiority and accuracy than with 2D and CDFI.
出处
《南华大学学报（医学版）》
2010年第6期772-775,共4页
Journal of Nanhua University(Medical Edition)
