CT gastrography (protocol)
Disclosures
- updated 4 Sep 2022:
Nothing to disclose
Updates to Article Attributes
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Computed tomographic (CT) gastrography, also called virtual gastroscopy (VG), is a noninvasive procedure for the detection of gastric abnormalities.
Advantages
- rapid and noninvasive exam
- offers information about local tumour invasion, lymph node and distant metastasis in cases of gastric cancer
Indications
- early detection of gastric carcinoma
- to examine gastric abnormalities, e.g. hiatus hernia, polyps and ulcers
- post-surgical assessment of the stomach
- CT gastrography and volumetry are used to assess the volume of the gastric pouch after bariatric surgery 4
Technique
- patient preparation, fasting 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
- 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
-<p><strong>Computed tomographic (CT) gastrography</strong>, also called <strong>virtual gastroscopy</strong> (<strong>VG</strong>), is a noninvasive procedure for the detection of gastric abnormalities.</p><h4>Advantages</h4><ul>-<li>rapid and noninvasive exam</li>-<li>offers information about local tumour invasion, lymph node and distant metastasis in cases of <a href="/articles/gastric-adenocarcinoma">gastric cancer</a>-</li>-</ul><h4>Indications<strong> </strong>-</h4><ul>-<li>early detection of gastric carcinoma</li>-<li>to examine gastric abnormalities, e.g. <a href="/articles/hiatus-hernia">hiatus hernia</a>, polyps and ulcers</li>-<li>post-surgical assessment of the stomach</li>-<li>CT gastrography and volumetry are used to assess the volume of the gastric pouch after bariatric surgery<sup> 4</sup>-</li>-</ul><h4>Technique<strong> </strong>-</h4><ul>-<li>patient preparation, fasting at least 8 hours before the exam</li>-<li>bowel distension, optimal gastric distention is a fundamental prerequisite for CT gastrography data evaluation; collapsed gastric wall may mimic disease or obscure underlying pathology</li>-<li>negative oral contrast medium with effervescent granules is effective for optimal gastric distension</li>-</ul><h5> Data acquisition and analysis</h5><ul>-<li>CT scanning is ideally performed on a multi-detector computed tomography (MDCT) with a thin collimation</li>-<li>data interpretation with the use of two-dimensional (2D) and three-dimensional (3D) displays for proper evaluation</li>- +<p><strong>Computed tomographic (CT) gastrography</strong>, also called <strong>virtual gastroscopy</strong> (<strong>VG</strong>), is a noninvasive procedure for the detection of gastric abnormalities.</p><h4>Advantages</h4><ul>
- +<li>rapid and noninvasive exam</li>
- +<li>offers information about local tumour invasion, lymph node and distant metastasis in cases of <a href="/articles/gastric-adenocarcinoma">gastric cancer</a>
- +</li>
- +</ul><h4>Indications<strong> </strong>
- +</h4><ul>
- +<li>early detection of gastric carcinoma</li>
- +<li>to examine gastric abnormalities, e.g. <a href="/articles/hiatus-hernia">hiatus hernia</a>, polyps and ulcers</li>
- +<li>post-surgical assessment of the stomach</li>
- +<li>CT gastrography and volumetry are used to assess the volume of the gastric pouch after bariatric surgery<sup> 4</sup>
- +</li>
- +</ul><h4>Technique<strong> </strong>
- +</h4><ul>
- +<li>patient preparation, fasting at least 8 hours before the exam</li>
- +<li>bowel distension, optimal gastric distention is a fundamental prerequisite for CT gastrography data evaluation; collapsed gastric wall may mimic disease or obscure underlying pathology</li>
- +<li>negative oral contrast medium with effervescent granules is effective for optimal gastric distension</li>
- +</ul><h5> Data acquisition and analysis</h5><ul>
- +<li>CT scanning is ideally performed on a multi-detector computed tomography (MDCT) with a thin collimation</li>
- +<li>data interpretation with the use of two-dimensional (2D) and three-dimensional (3D) displays for proper evaluation</li>
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