高血压患者二次组织谐波成像后左室心肌背向散射积分变化  

The variance of integrated backscatter on second tissue harmonic imaging of left ventricular myocardium in hypertension patients

作　　者：王晓光[1] 任卫东[2] 马春燕[2] 杨军[2] 陈昕[2] 

机构地区：[1]中国医科大学附属第二医院超声科,辽宁沈阳110004 [2]中国医科大学第一临床学院心功能科

出　　处：《中国医学影像技术》2004年第7期1039-1041,共3页Chinese Journal of Medical Imaging Technology

摘　　要：目的　二次组织谐波成像 (STHI)与基波成像 (FI)后应用背向散射积分 (IBS)评价高血压心肌病变。方法　对高血压Ⅰ期患者 2 4例 (高血压 1组 )、高血压Ⅱ～Ⅲ期患者 3 6例 (高血压 2组 )和正常对照组 2 2例 ,测量和分析STHI与FI后室间隔及左室后壁心肌IBS、IBS %、周期变化 (CVIB)及跨壁梯度 (TGIB)变化。结果　高血压 1组与正常对照组比较 ,各指标间差异均无显著性意义。高血压 2组STHI和FI时 ,室间隔与左室后壁的IBS %值增高 ;室间隔与左室后壁的CVIB值减低和左室后壁TGIB值增高。三组STHI时 ,室间隔与左室后壁的IBS %均高于FI。结论　应用二次组织谐波成像后背向散射积分技术可以更敏感地定量评价高血压心肌病变的严重程度。Objective To assess value of ultrasonic integrated backscatter (IBS) on second tissue harmonic imaging(STHI) and fundamental imaging (FI) in lesion of myocardium in hypertension patients. Methods Myocardial IBS, normalized IBS (IBS%), cyclic variation of IBS (CVIB) and transmural gradient of IBS (TGIB) of interventricular septum (IVS) and post wall (PW) on FI and STHI were measured in 24 patients with hypertension stage Ⅰ (Group 1) and 38 patients with hypertension stage Ⅱ-Ⅲ (Group 2) and 22 normal people (controls). Results The IBS% of IVS and PW on both STHI and FI views of Group 2 were higher than that of Group 1 and the controls. The CVIB of IVS and PW on both STHI and FI of Group 2 were lower than that of Group 1 and controls. The TGIB of PW on both STHI and FI views of Group 2 were higher than that of Group 1 and the controls. The IBS% of IVS and PW on STHI views of all the three groups were higher than that on FI views. Conclusion Applying IBS measured on STHI and FI can evaluate the myocardium lesion degree of patients with hypertension sensitively.

关 键 词：高血压 二次组织谐波成像 基波成像 背向散射积分 

分 类 号：R544.1[医药卫生—心血管疾病] R540.45[医药卫生—内科学]