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Venetian blind shadowing on ultrasound

机译:威尼斯盲目阴影在超声波上

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摘要

"Venetian blind" shadowing is a type of posterior acoustic artifact described as bands of linear shadows along lines of sight, often diverging on a convex probe [1]. Ironic to its name, it resembles "vertical blinds" rather than the classic horizontal appearance of Venetian window blinds (Figs. 1,2). It has classically been described in uterine adeno-myosis [2, 3] as heterogeneous myometrial echotexture with regions of increased (heterotopic endometrial tissue) and decreased echogenicity (smooth muscle hyperplasia), associated with intramyometrial hypoechoic radiating linear striations [4] (Fig 3). Alternatively, it can also be seen in uterine fibroids due to its whorled nature or internal calcifications causing variable absorption of sonographic beams [5] (Fig 4). This makes sonographic differentiation between uterine fibroid and focal adenomyosis difficult.
机译:“威尼斯盲人”阴影是一种作为沿视线线的线性阴影带描述的一类后声学伪影,通常在凸探针上发散[1]。 讽刺到它的名字,它类似于“垂直百叶窗”而不是威尼斯窗帘的经典水平外观(图1,2)。 它在子宫腺瘤 - 岩体[2,3]中被描述为具有增加(异位子宫内膜组织)的区域的异质肌瘤障碍,并且与血内模粒过度辐射线性条纹相关的(平滑肌增生)降低(平滑肌增生)[4](图3 )。 或者,由于其轮廓肌瘤,其由于其轮廓肌油,因此引起超声波横梁的变量吸收[5](图4)。 这使子宫肌瘤和局灶性腺弥合之间的超声差异困难。

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