CT Intravenous Pyelography (CT IVP) is a diagnostic imaging test used to visualize the urinary tract, including the kidneys, ureters, and bladder. It involves injecting a contrast dye into a vein, which highlights these structures on the CT scan. CT IVP is used to diagnose conditions like kidney stones, tumors, hydronephrosis, ureteral obstructions, and congenital anomalies. The procedure involves fasting, injecting the contrast dye, taking multiple CT images, and then drinking plenty of fluids afterward. It provides detailed images and helps identify abnormalities but carries risks such as allergic reactions to the dye and radiation exposure. CT IVP is preferred over traditional IVP for its higher sensitivity and specificity.