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The scan itself usually involves a CT scan without contrast (a non-contrast phase), a CT scan while the contrast is within the kidneys (a parenchymal phase), and a CT scan taken while the contrast travels through the renal tract (an excretory phase). Risks. A person may have an allergy to the contrast dye.
It is also a useful test to investigate acute abdominal pain (especially of the lower quadrants, whereas ultrasound is the preferred first line investigation for right upper quadrant pain). Renal stones , appendicitis , pancreatitis , diverticulitis , abdominal aortic aneurysm , and bowel obstruction are conditions that are readily diagnosed ...
Cystitis cystica can show up on a CT urogram as a number of small, rounded filling defects in the bladder wall that range in size from 2 to 5 mm. Lesions can also occasionally appear as a large, tumor-like mass. Treatment. Since determining the precise cause of cystitis cystica can be difficult, treatment can be complicated.
In urology, voiding cystourethrography ( VCUG) is a frequently performed technique for visualizing a person's urethra and urinary bladder while the person urinates (voids). It is used in the diagnosis of vesicoureteral reflux (kidney reflux), among other disorders. [1] The technique consists of catheterizing the person in order to fill the ...
Urology. Complications. Acute kidney injury. Renal colic, also known as ureteric colic, is a type of abdominal pain commonly caused by obstruction of ureter from dislodged kidney stones. The most frequent site of obstruction is the vesico-ureteric junction (VUJ), the narrowest point of the upper urinary tract.
CT urography (CTU) is commonly used in the evaluation of hematuria, and specifically tailored to image the renal collecting system, ureters and bladder in addition to the renal parenchyma. Initial imaging includes a noncontrast phase to detect renal calculi as a source of hematuria.
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. Retrograde pyelogram – Any pyelogram in which contrast medium is introduced from the lower urinary tract and flows ...
CT cystography. CT cystography is performed by filling up the urinary bladder using diluted iodinated contrast to visualise any bladder injury if the subject has haematuria (blood in urine) post trauma. Since CT cystography can be done together with CT abdomen and pelvis, it has supplanted conventional cystography in such cases. See also
Imaging studies, such as an intravenous urogram (IVU), renal ultrasonography, CT, or MRI, are also important investigations in determining the presence and/ or cause of hydronephrosis. Whilst ultrasound allows for visualisation of the ureters and kidneys (and determine the presence of hydronephrosis and / or hydroureter), an IVU is useful for ...
Ultrasound Scans can show signs of obstruction such as hydronephrosis, while a CT scans can show the same and can locate the stricture or narrowing especially if used with contrast (CT Urogram), it can delineate other pathologies that might contribute to stricture such as Tumours or impacted stones.