Venetian Blind Artefact

Motsa is an useful technique for the evaluation of vertebrobasilar ischemia and aneurysm scanning from the foramen magnum through the circle of willis.

Venetian blind artefact.

Hydrophilic processing fluids may be retained within the embedded. This gives rise to the so called venetian blind artifacts shown in the image left. While it is very common in frozen sections of the breast and lymphoid tissue the artefact also occurs in paraffin embedded tissue. Venetian blind artifact 3d mra only this is a specific artifact seen only with the motsa multiple overlapping thin slab acquisition technique.

The venetian blinds artifact is an uncommon tissue cutting artifact that leads to the formation of parallel series of strips of tissue separated by narrow clear spaces that resemble venetian blinds. This artifact has been attributed to vibration of the specimen in the paraffin block caused either by excessive hardening of the tissue in. The summary below examines the most common microtomy artifacts that can be seen under the microscope when viewing stained tissue sections. It represents overlap between adjacent slabs that are acquired as separate acquisitions and then fused together.

Venetian blind artifact from motsa because each motsa slab is acquired at separate times exact registration of position and signal intensity of adjacent slabs may not be possible. Some types of tissue are more prone to certain kinds of artifacts. The venetian blind a k a. Thick thin areas venetian blinds washboarding undulations and skipping.

This causes the tissue to fall out or vibrate during the cutting procedure leading to venetian blind artifact which appears as zones of compressed tissue separated by open spaces. 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. The slabs typically overlap 25 40 to minimize the venetian blind artifact venetian blind artifact due to minimal saturation effects. 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.