氣體對(duì)比劑在胃部MRI檢查中的可行性
[Abstract]:Objective to evaluate the value of gas contrast agent in gastric MRI examination because of its little research and report as a contrast agent for MRI gastric examination, gas can lead to magnetic sensitive artifacts, and the purpose of this study is to evaluate the application of gas contrast agent in gastric MRI examination. Materials and methods 60 patients with upper abdominal MRI were selected. All of them were given intramuscular injection of 654-2 and the gas produced by oral gas powder was used as contrast medium. MRI was performed to analyze the image quality and grade. Results 60 cases were acceptable to the taste of gas producing powder, 5 cases felt uncomfortable in hypopharynx, and 60 cases had no adverse reaction. 57 cases (95%) were well filled with MRI gas contrast agent. The gas is negative contrast in the stomach cavity, the continuity is good, the signal is even; There were 21 cases (35.0%) with grade 0 of MRI images, 25 cases (41.7%) with grade 1, 6 cases (10.0%) with grade 2, 8 cases (13.3%) with grade 3. 52 cases (86.7%) of T2WI coronal images were satisfied with clinical diagnosis (grade 0 ~ 2). The gastric contours of T2WI coronal images were lifelike, the gastric wall was clear, and there was no artifact. A few artifacts were found in FS-T2WI axial images, the outline of gastric cavity was clear and the gastric wall was well displayed, while TIWI axial images showed less artifacts and better gastric wall. There were more artifacts in axial images of T2WI and average in gastric wall. In 3 grade patients with T2WI coronal image, FS-T2WI,T1WI and T2WI axial images were obviously artifact, contour was blurred, gastric wall and tumor contour was distorted or duplicated. Conclusion in MRI examination of stomach, it is safe to use gas as contrast agent, the distribution is even, the signal characteristic is stable, the patient is easy to tolerate.
【作者單位】: 甘肅省永昌縣人民醫(yī)院放射科;蘭州軍區(qū)蘭州總醫(yī)院影像診斷中心;
【基金】:甘肅省第五批科技計(jì)劃(基礎(chǔ)研究計(jì)劃)項(xiàng)目(145RJZA145)
【分類號(hào)】:R445.2;R57
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