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A CT scan image showing a ruptured abdominal aortic aneurysm. CT Scan of 11 cm Wilms' tumor of right kidney in 13-month-old patient. Computed tomography of the abdomen and pelvis is an application of computed tomography (CT) and is a sensitive method for diagnosis of abdominal diseases. It is used frequently to determine stage of cancer and to ...
Computed tomography enterography (CT enterography, CTE) is a medical imaging technique which uses computed tomography scanner and contrast media to examine the small bowel. [1] It was first introduced by Raptopoulos et al. in 1997. [ 2 ]
After the scan is complete, the patient is encouraged to eat and drink normally, with special attention to plenty of fluids. The barium sulfate is excreted through defecation , so extra fluid intake helps prevent constipation , which is a possible side effect (see Johns Hopkins Medicine Health Library for an example of a possible patient ...
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.
The procedure is otherwise very similar, although the images will be of poorer quality. If a perforation exists, the contrast will leak from the bowel to the peritoneal cavity; water-soluble material is less obscuring compared to barium should an abdominal incision to remove the contrast be necessary.
Patient fasts at least 8 hours before the exam. Bowel distension, optimal gastric distention is a fundamental prerequisite for CT gastrography data evaluation; collapsed gastric wall may mimic disease or obscure underlying pathology. Negative oral contrast medium with effervescent granules is effective for optimal gastric distension.
Opting for an alternative type of scan without contrast might result in a 10 to 20 percent reduction in diagnostic accuracy, he said. Other sources of the dye are limited, however.
CT angiography is a contrast CT taken at the location and corresponding phase of the blood vessels of interest, in order to detect vascular diseases. For example, an abdominal aortic angiography is taken in the arterial phase in the abdominal level, and is useful to detect for example aortic dissection. [10]