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A computed tomography urography (CT urography or CT urogram) is a computed tomography scan that examines the urinary tract after contrast dye is injected into a vein. [1] In a CT urogram, the contrast agent is through a cannula into a vein, allowed to be cleared by the kidneys and excreted through the urinary tract as part of the urine. [1]
Abdominal imaging is associated with many potential uses for the different phases of contrast CT.The majority of abdominal and pelvic CT's can be performed using a single-phase, but the evaluation of some tumor types (hepatic/pancreatic/renal), the urinary collecting system, and trauma patients among others, may be best performed with multiple phases.
Ultrasound involves a probe that is placed near a structure and uses the transmission of ultrasound waves through a structure to produce images, after computer processing. [1] Ultrasound of the urinary tract is performed by a probe placed on the abdominal wall, called a transducer. [1] This occurs while a person is lying down. [1]
Pyelogram (or pyelography or urography) is a form of imaging of the renal pelvis and ureter. [1]Types include: Intravenous pyelogram – In which a contrast solution is introduced through a vein into the circulatory system.
Spot images are taken at 30 to 45 degrees to visualise the entire spongy urethra (penile urethra). [ 4 ] If there is no contraindication to full urinary catheterisation such as false passage or stricture, the urinary catheter should be inserted until the urinary bladder to perform voiding cystourethrography to visualise the prostatic urethra ...
Fluoroscopic spot images and videos are taken during the micturition phase to detect any reflux. The lower ureter is best seen on an anterior oblique position. In males, peeing should be done in oblique or lateral positions to visualise the whole of urethra. Finally, the whole abdomen is imaged to detect any undetected reflux in previous images.
A CT pulmonary angiogram, in this case showing pulmonary embolism of saddle-type, which becomes more radiolucent than the radiocontrast filled blood surrounding it (but it may be indistinguishable without radiocontrast). Contrast CT, or contrast-enhanced computed tomography (CECT), is X-ray computed tomography (CT) using radiocontrast.
As with any test that screens for disease, the risks of full-body CT scans need to be weighed against the benefit of identifying a treatable disease at an early stage. [6] An alternative to a full-body CT scan may be Magnetic resonance imaging (MRI) scans. MRI scans are generally more expensive than CT but do not expose the patient to ionizing ...
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