CT Gastrography
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| CT Gastrography | |
|---|---|
 Normal CT Virtual gastroscopy | |
| Purpose | is noninvasive procedure for detection of gastric abnormalities |
Computed tomographic (CT) gastrography, also called virtual gastroscopy (VG), is a noninvasive procedure for the detection of gastric abnormalities. Multiple X-rays are used to create a 3-Dimensional image of the organ, allowing abnormalities to be detected.[1]
Advantages[edit]
- rapid and noninvasive
- identifies local tumor invasion, lymph node and metastasis in cases of gastric cancer
Indications[edit]
- early detection of gastric carcinoma
- to examine gastric abnormalities, e.g. hiatus hernia, polyps and ulcers
- post-surgical assessment of the stomach
Technique[edit]
- 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.
Data acquisition and analysis[edit]
- CT scanning is ideally performed on a multi-detector computed tomography (MDCT) with a thin collimation.
- Data interpretation with the use of two-dimensional (2D) and three-dimensional (3D) displays for proper evaluation
See also[edit]
References[edit]
- ^ Ibrahim, Dalia. "CT gastrography (protocol) | Radiology Reference Article | Radiopaedia.org". Radiopaedia.