What is likely causing a blurry appearance in the coronal reformation of the abdomen?

The blurry appearance in the coronal reformation of the abdomen is likely caused by the image being reformatted from thick axial images. When images are acquired with thick slices, there is a loss of detail and spatial resolution. This can lead to increased partial volume effects, where multiple tissue types are averaged within a single pixel, resulting in blurriness when the images are reformatted into a different plane, such as coronal.

Thick axial images do not capture the fine details present in thinner slices, such as subtle differences in tissue attenuation. When reformatted into coronal images, this lack of detail translates into a blurry appearance. Thinner slices provide more information, allowing for clearer reconstructions and better visualization of anatomy and pathology.

Other options may deal with image characteristics or display settings, but their impact on the overall sharpness is not as pronounced as the influence of slice thickness on the reformation process. Therefore, the choice highlighting thick axial images directly relates to the blurriness observed in coronal reformatted images.