Each doctor determines the sequence of examination of the images. "The only correct" tactic does not exist. The radiologist is free to choose between several standard methods. But a clear sequence of image analysis has the advantage that small details are not left out. This is especially true for beginning doctors.
Many CT studies of the brain are carried out without the introduction of a contrast agent. For example, in the differential diagnosis of intracranial hemorrhages and strokes in patients with acute neurological disorders, the introduction of contrast agents is not required.
Computed tomography is a special type of X-ray examination, which is carried out by indirect measurement of attenuation or attenuation, X-rays from various positions, determined around the patient being examined.
