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.
Holding still during the scan results in the best CT pictures. For the first few scans, the table will move quickly through the scanner. These first scans check the correct starting position. The table will move more slowly for the rest of the scans. If you are having contrast, it will be given to you through your IV. A CT neck scan can take up to 15 minutes. All images will be checked for quality before you leave. More scans will be taken, if needed. What will I feel during the scan? CT scanning is painless, but you may feel some discomfort from staying still on the scan table. If contrast is used: You may notice a warm, flushed feeling during the injection. You may also notice a metallic taste in your mouth.