MRI is most useful as an alternative to CT in patients who cannot tolerate intravenous iodinated contrast and/or when confirming a diagnosis of hemorrhage. 4 Reformatted images in the sagittal and coronal planes can sometimes help to determine the exact origin of lesions. 3 Intravenous contrast can be useful when characterizing the enhancement pattern of lesions on portal venous phase images or evaluating washout on delayed-enhancement images. To detect small lesions and correct CT attenuation measurement requires thin-section scanning (3 mm or less) through the adrenal fossa using a small field-of-view. 2 CT is the primary imaging method for evaluating adrenal disorders. Their “limbs” are approximately 0.4 cm thick in axial cross-section, which is roughly as thin as the adjacent diaphragmatic crus. 1 The vertical length of each gland may be anywhere from 2 to 4 cm. They are thin, inverted Y- or V-shaped soft tissue structures and have flat or concave margins. The adrenal glands are paired retroperitoneal endocrine organs.
0 Comments
Leave a Reply. |