Kimme-Smith C, Rothschild P A, Bassett L W, Gold R H, Westbrook D
Department of Radiological Sciences, UCLA School of Medicine 90024.
Ultrasound Med Biol. 1988;14 Suppl 1:203-10. doi: 10.1016/0301-5629(88)90062-2.
An investigation of the outcome of over 1600 breast ultrasound examinations revealed a number of scanning artifacts. Artifactual echoes in cysts resulted from inappropriate scanning factors, including focal zone placement, gain, TGC, and gray scale, and from partial volume effect. The absence of a sign suspicious for carcinoma, posterior shadowing to a solid mass, resulted from faulty focal zone placement, or from the mass resting on chest wall tissue. Pathology was sometimes simulated by postsurgical scars, ducts, and benign calcifications. Corrective procedures to alleviate the various scanning artifacts are recommended.
对1600多次乳腺超声检查结果的调查发现了一些扫描伪像。囊肿中的伪像回声源于不适当的扫描因素，包括焦点区放置、增益、时间增益补偿（TGC）和灰度，以及部分容积效应。对实性肿块不存在可疑癌的征象、后方声影，是由于焦点区放置错误，或肿块位于胸壁组织上所致。术后瘢痕、导管和良性钙化有时会模拟病理情况。建议采取纠正措施以减轻各种扫描伪像。
