Venetian Blind Artefact Ultrasound

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.

Venetian blind artefact ultrasound.

Ultrasound is used to diagnose the presence and monitor the growth of fibroids. Ultrasound features of adenomyosis including asymmetrical uterine wall thickening anteriorly with focal heterogeneity and associated increased blood flow as well as the venetian blind pattern of acoustic shadowing the latter may be seen with either adenomyosis or uterine fibroids. Multipath artifact arises when the ultrasound beam hits a boundary at an angle and part of the original echo returns to the transducer while other part is reflected off a second boundary before returning back to the transducer. Resembles a ladder or venetian blind.

The slabs typically overlap 25 40 to minimize the venetian blind artifact venetian blind artifact due to minimal saturation effects. Necas m 2017 artifacts in diagnostic medical ultrasound grayscale artifacts vol. 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.

It has been attributed to either hardening of the tissue in the paraffin block or defective assembly of the microtome knife. The venetian blind a k a. Venetian blind artifact may be seen but edge shadowing dense posterior shadowing from calcification are also typically seen 17. The venetian blinds artifact is an uncommon tissue cutting artifact that leads to the formation of parallel series of strips of tissue separated from one another by narrow clear spaces.

Motsa is an useful technique for the evaluation of vertebrobasilar ischemia and aneurysm scanning from the foramen magnum through the circle of willis. Uncomplicated leiomyomas are usually hypoechoic but can be isoechoic or even hyperechoic compared to normal myometrium. 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.