What happens to the display size when the DFOV of the reconstruction is increased?

Increasing the display field of view (DFOV) during image reconstruction in CT imaging causes the display size to increase. DFOV refers to the portion of the scanned area that is reconstructed and displayed on the monitor. When you increase the DFOV, you effectively enlarge the area represented, which results in an increase in the display size of the images.

This increased DFOV allows for a broader area of interest to be viewed, which can be particularly useful for evaluating larger anatomical structures or ensuring the anatomy of interest is entirely captured in the displayed image. It provides a greater perspective on the anatomical region being examined, which can enhance diagnostic capabilities.

On the other hand, the other choices do not accurately reflect the behavior of display size in relation to DFOV changes. While increasing the DFOV does alter the pixel density, which might lead to pixelation if the size of the image on display exceeds the resolution capacity of the monitor, the fundamental effect is that the display size itself increases as the DFOV expands.