Computed tomography (CT) Systems having beam widths along the z-axis wide enough to cover a significant anatomical length in a single axial rotation are widely available. The methodology introduced for stationary phantom cone beam CT (SCBCT) also applies to any CT scan without table motion in applications ranging from CT fluoroscopy, perfusion studies, and multi-phasic liver scans. The experimental data obtained on a 256 channel cone beam CT scanner are used to corroborate the theory. For SCBCT scanning, it was shown that the peak dose on the central ray of the cone beam is the logical choice for a SCBCT dose-descriptor consistent with the computed tomography dose index-based dose used in conventional CT.