What is the name of a section that is diagonal between horizontal and vertical planes?

The term that describes a section that is diagonal between horizontal and vertical planes is known as an oblique section. This type of section provides a view that is not strictly aligned with the standard anatomical planes (sagittal, coronal, or transverse), allowing for the examination of structures at angles that can reveal more about their spatial relationships.

Oblique sections are particularly useful in imaging techniques like CT scans and MRIs, where a clear picture of complex anatomical structures is essential. In contrast, transverse, sagittal, and coronal sections represent standard planes that run horizontally, vertically along the midline, and vertically from front to back, respectively. Each of these planes provides distinct perspectives on the body but does not capture the angled views that an oblique section offers. Therefore, the ability to view structures in a non-standard orientation through an oblique section enhances our understanding of anatomy.