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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.
MRI is widely used in hospitals and clinics for medical diagnosis, staging and follow-up of disease. Compared to CT, MRI provides better contrast in images of soft tissues, e.g. in the brain or abdomen. However, it may be perceived as less comfortable by patients, due to the usually longer and louder measurements with the subject in a long ...
Volume rendering techniques have been developed to enable CT, MRI and ultrasound scanning software to produce 3D images for the physician. [24] Traditionally CT and MRI scans produced 2D static output on film. To produce 3D images, many scans are made and then combined by computers to produce a 3D model, which can then be manipulated by the ...
CT is an accurate technique for diagnosis of abdominal diseases like Crohn's disease, [66] GIT bleeding, and diagnosis and staging of cancer, as well as follow-up after cancer treatment to assess response. [67] It is commonly used to investigate acute abdominal pain. [68]
Gastrointestinal perforation results in sudden, severe abdominal pain at the site of perforation, which then spreads across the abdomen. [5] The pain is intensified by movement. Nausea, vomiting, hematemesis, and increased heart rate are common early symptoms. Later symptoms include fever and or chills. [6]
Yet, CT scan is the best alternative for diagnosing intra-abdominal injury. [1] Computed tomography provides an overall better surgical strategy planning, and possibly fewer unnecessary laparotomies. Abdominal x-ray is therefore not recommended for adults with acute abdominal pain presenting in the emergency department. [2]
However, in obese patients, imaging in the form of ultrasound, CT, or MRI may aid in the diagnosis. For example, an abdominal X-ray showing small bowel obstruction in a female patient with a painful groin lump needs no further investigation.
Virtual colonoscopy (VC, also called CT colonography or CT pneumocolon) is the use of CT scanning or magnetic resonance imaging (MRI) to produce two- and three-dimensional images of the colon (large intestine), from the lowest part, the rectum, to the lower end of the small intestine, and to display the images on an electronic display device.