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将能量多普勒显示（ＰＤＩ）及彩色多普勒血流显像（ＣＤＦＩ）（１０ＭＨｚ）应用于肌肉骨骼系统肿瘤，结果显示：高频灰阶超声不仅能发现恶性肌骨系统肿瘤常见的Ｘ线、ＣＴ扫描征象，而且许多低频探头观察不到的病变及层次一目了然，并能发现早期病变。ＰＤＩ、ＣＤＦＩ能观察肿瘤内及肿瘤边缘处血供情况，据肿瘤血管分布特征分为三型。多普勒频谱分析显示：恶、良性肌骨系统肿瘤收缩期血流峰值为２７．３４±１１．７８ｃｍ／ｓ和１５．４０±８．４４ｃｍ／ｓ（Ｐ值＜０．０１）；阻力指数分别为０．７７±０．０８和０．６１±０．１０（Ｐ值＜０．００１）。结论：①对于肌骨系统肿瘤超声检查宜选用高频探头用直接检查法。②ＰＤＩ、ＣＤ－ＦＩ显示恶性肌骨系统肿瘤为高速高阻血流且血流丰富；良性肌骨系统肿瘤为低速低阻血流且血流稀少。③ＣＤＦＩ尤其ＰＤＩ提示恶性病变范围远远大于骨破坏长度及软组织肿物范围，故手术切除范围宜足够大。④本研究为今后恶性肌骨系统肿瘤放化疗疗效观察提供了客观指标。
Power Doppler display (PDI) and color Doppler flow imaging (CDFI) (10 MHz) were applied to musculoskeletal system tumors. The results showed that high-frequency gray-scale ultrasound can not only detect X common to malignant musculoskeletal tumors. Line, CT scan signs, and many of the lesions and levels not seen by low-frequency probes at a glance, and can find early lesions. PDI and CDFI can observe the blood supply in the tumor and the edge of the tumor. According to the distribution characteristics of tumor blood vessels, they are divided into three types. Doppler spectrum analysis showed that the peak systolic blood flow of malignant and benign musculoskeletal tumors was 27.34±11.78cm/s and 15.40±8.44cm/s (P<0.01); the resistance index They were 0.77 ± 0.08 and 0.61 ± 0.10, respectively (P < 0.001). Conclusion: 1 For the musculoskeletal tumor ultrasound examination, high frequency probes should be used for direct examination. 2PDI and CD-FI showed malignant musculoskeletal tumors with high-speed, high-impedance blood flow and abundant blood flow; benign musculoskeletal tumors had low-velocity, low-impedance blood flow and blood flow was sparse. 3CDFI, especially PDI, indicates that the range of malignant lesions is far greater than the length of bone destruction and the range of soft tissue tumors, so the scope of surgical resection should be large enough. 4 This study provided objective indicators for the observation of the therapeutic effects of radiotherapy and chemotherapy for malignant musculoskeletal tumors.