Huber S, Stiskal M, Steinbach R, Czembirek H
Zentral-Röntgeninstitut, KH Lainz, Wien.
Rofo. 2000 Oct;172(10):830-5. doi: 10.1055/s-2000-7893.
To compare contrast material-enhanced harmonic power Doppler ultrasonography (CHI) with conventional contrast-enhanced power Doppler ultrasound (CPD) in depicting the vascularity of fibroadenomas.
Forty patients with fibroadenomas (aged 19-61 years) underwent conventional contrast-enhanced and harmonic power Doppler US. According to a standardized examination protocol, serial dynamic scans were obtained before and at 30, 90 and 150 seconds after injection of contrast agent. Video-taped scans were independently reviewed by three blinded readers with regard to parameter artifacts, degree of Doppler signal enhancement, demarcation of vessels and extent of vessel visualization.
The number of intratumoral power Doppler signals depicted was similar with both techniques at 30-90 seconds after contrast administration; however, after 90 seconds, CPD depicted significantly more intratumoral signals than did CHI (p < 0.0001). CHI was superior to CPD with regard to "blooming" or motion-related artifacts (p < 0.0001).
CHI balances the increased susceptibility of CPD to interference from clutter artifacts and thus allows the depiction of vessels that may have been obscured on CPD at similar system settings.
比较对比剂增强谐波功率多普勒超声检查（CHI）与传统对比增强功率多普勒超声检查（CPD）在显示纤维腺瘤血管方面的差异。
40例纤维腺瘤患者（年龄19 - 61岁）接受了传统对比增强和谐波功率多普勒超声检查。按照标准化检查方案，在注射对比剂前及注射后30、90和150秒进行系列动态扫描。3名不知情的阅片者对录像扫描结果进行独立评估，内容包括参数伪像、多普勒信号增强程度、血管边界及血管显示范围。
在注射对比剂后30 - 90秒，两种技术显示的瘤内功率多普勒信号数量相似；然而，90秒后，CPD显示的瘤内信号明显多于CHI（p < 0.0001）。在“闪烁”或运动相关伪像方面，CHI优于CPD（p < 0.0001）。
CHI平衡了CPD对杂波伪像干扰的更高敏感性，因此在相似系统设置下能够显示出CPD可能无法清晰显示的血管。
