is noninvasive procedure for detection of gastric abnormalities
Computed tomographic (CT) gastrography, also calledvirtual 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.
Advantages
rapid and noninvasive
identifies local tumor invasion, lymph node and metastasis in cases ofgastric cancer
Indications
preoperative planning for gastric carcinoma
to examine gastric abnormalities, e.g.hiatus hernia, polyps and ulcers
post-surgical assessment of the stomach
Technique
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
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
↑Kim, Jin Woong; Shin, Sang Soo; Heo, Suk Hee; Lim, Hyo Soon; Lim, Nam Yeol; Park, Young Kyu; Jeong, Yong Yeon; Kang, Heoung Keun (2015). "The Role of Three-Dimensional Multidetector CT Gastrography in the Preoperative Imaging of Stomach Cancer: Emphasis on Detection and Localization of the Tumor". Korean Journal of Radiology. 16 (1): 80. doi:10.3348/kjr.2015.16.1.80.
