This means they are retroperitoneal. Each kidney is held in place by connective tissue, called renal fascia, and is surrounded by a thick layer of adipose tissue, called perirenal fat, which helps to protect it.he cortex and medulla make up the parenchyma, or functional tissue, of the kidney. The central region of the kidney contains the renal pelvis, which is located in the renal sinus, and is continuous with the ureter. The renal pelvis is a large cavity that collects the urine as it is produced.
You must be still during the exam, because movement causes blurred images. You may be told to hold your breath for short periods of time. In many cases, an abdominal CT is done with a pelvis CT. The scan should take less than 30 minutes. You need to have a special dye, called contrast, put into your body before some exams. Contrast helps certain areas show up better on the x-rays. Contrast can be given through a vein (IV) in your hand or forearm. If contrast is used, you may also be asked not to eat or drink anything for 4 to 6 hours before the test.
How long does it take to have a screening CT scan? Advances in CT scanning now allow individuals to undergo a painless, non-invasive scan that takes about 20 seconds once you have registered, changed clothing and are on the scanning table. The entire process of registering and filling out our simple questionnaire can be completed in less than half an hour.