Which acquisition configuration is best suited for high-resolution images in a helical mode CT scan?

The choice of 1 mm x 8 rows for high-resolution images in a helical mode CT scan is optimal because it provides the finest slice thickness available among the options. A thinner slice, such as 1 mm, allows for improved spatial resolution and detail in the images, which is particularly important for diagnostic accuracy in visualizing small structures or subtle differences in anatomy.

In helical (or spiral) CT, the configuration is crucial because it determines the quality and clarity of the acquired images. A smaller slice thickness can reduce partial volume effects, where different tissues are averaged together in a thicker slice, potentially obscuring important diagnostic information. Additionally, using more rows (in this case, 8) enhances the volume of data that can be collected in a shorter time, thus optimizing both spatial and temporal resolutions further.

Other configurations offered, such as 2 mm x 8 rows, 3 mm x 5 rows, and 4 mm x 4 rows, increase slice thickness which can compromise the detail in the images, reducing the ability to discern small anatomical structures. Thicker slices may be suitable for faster scanning or when larger regions of interest are being evaluated; however, for high-resolution imaging, the finer slice thickness with more rows is the