Radiology plays an important role in evaluating patients with suspected adrenal gland pathology. Morphologic delineation of adrenal gland is especially valuable in patients with clinical and/or biochemical evidence of a disturbance in adrenal function. Many diagnostic radiologic methods are available for demonstrating adrenal lesions. Computed tomography overcomes many of the disadvantages of these other radioligic techniques. The high degree of spatial and density resolution allows precise demonstration of the normal adrenal glands as well as detection of both small and large tumors in almost patients. So CT of adrenal gland is an excellect noninvasive screening method and definitive imaging technique. The authers have investigated the capability of CT to image the normal size, location and shape of both glands. Knowledge of the range of normal is useful for optimal interpretation of CT scan in patients with suspected adrenal pathology. We reviewed CT scan of 150 cases withou evidence of adrenal disease. The following results were obtained : 1. There were 90 male and 60 female patients. 2. Their ages ranged from 20 to 60 years. 3. On CT, both glands were shown in 135 (90.0%), the right in 143(95.3%), the left in 142(94.6%). 4. In the shape of adrenal glands, most of right adrenal gland was linear or comet shaped : 68(47.6%). most of left adrenal gland was inverted-Y shaped ; 103(72.6%). 5. In the length of adrenal glands. the right was 2.5$pm$0.77cm, the left was 2.9$pm$0.75cm. 6. In the width of adrenal glands. the right was 3.2$pm$0.74cm, the left was 2.7$pm$0.57cm. 7. In the thickness of adrenal glands, the right was 0.5 $pm$0.14 cm, the left was 0.6$pm$0.16cm.