Final answer:
The most diagnostic multi-planar reconstructions are generated from stacked transverse images from helical scans, as they provide faster scanning times and more continuous, detailed images compared to conventional serial scans.
Step-by-step explanation:
The most diagnostic multi-planar reconstructions can be generated from stacked transverse images from helical scan. A helical CT scan (also known as spiral CT) acquires data continuously as the patient is moved through the rotating scanner, resulting in a helical path of data acquisition. This allows for faster scanning times and more detailed images, which can be reconstructed into multiple planes: axial, coronal, and sagittal. This is more advantageous compared to conventional, serial CT scans which acquire data slice by slice and may have gaps between slices, leading to less continuous reconstructions. Stacked localizer images typically provide less detailed information and are not typically used for multi-planar reconstructions.