genitourinary disorders
Genitourinary Imaging Tests
Computed Tomography
Computed tomography provides a broad view of the urinary tract and surrounding structures. Conventional or helical scanners are used for most purposes with or without IV Radiographic Contrast Agents and Contrast Reactions . Use of contrast agents with either technique resembles IV urography (IVU) but provides additional detail. Previously, in trauma patients, there was concern that use of contrast would make it difficult to distinguish abdominal hemorrhage from urinary tract disruption, but with modern imaging techniques and protocols, this distinction can be made. Helical CT without a contrast agent is the study of choice for imaging of calculi; dual-energy scanners may provide additional information that can help determine stone composition. The main disadvantage of CT is that it exposes patients to a relatively large dose of ionizing radiation. CT angiography is a less invasive alternative to conventional angiography. 