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| MRI of gastric carcinoma： Results of T and N-staging in an in vitro study | |
| 作者单位： | Il Young Kim,Sang Won Kim,Hyeong Cheol Shin,Young Tong Kim(Department of Radiology,Soonchunhyang University Cheonan Hospital,23-20 Bongmyungdong,Cheonan,Choongnam 330-720,South Korea);Moon Soo Lee(Department of Surgery,Soonchunhyang University Cheonan Hospital,23-20 Bongmyungdong,Cheonan,Choongnam 330-720,South Korea);Dong Jun Jeong,Chang Jin Kim(Department of Pathology,Soonchunhyang University Cheonan Hospital,23-20 Bongmyungdong,Cheonan,Choongnam 330-720,South Korea) |
| 摘 要： | AIM： To determine the accuracy of 1.5-T magnetic resonance imaging （MRI） in the evaluation of gastric wall invasion and perigastric lymph node metastasis in gastric adenocarcinoma. METHODS： Twenty resected gastric specimens containing 20 tumors were studied with a 1.5-T MR system using a commercial head surface coil. MR scanning was performed with a T1 weighted image （TR/TE = 500/20）, and a T2 weighted image （TR/TE = 2500/90）. MR findings were compared with pathologic findings. RESULTS： A T1-weighted image demonstrated three layers in the normal gastric wall. All of the gastric tumors were well demonstrated by lesions and location. In a MRI findings of gastric wall invasion, there was 1 case of T1, 7 of T2, 11 of T3. Pathologic results of resected specimens included 3 cases of pT1, 4 of pT2, and 12 of pT3. The accuracy of T staging with MRI was 74% （14 of 19）. MRI findings of lymph node metastasis included 6 cases of NO, 13 cases of N1. The accuracy of the N staging with MRI was 47% （9 of 19）. CONCLUSION： MRI has a high diagnostic accuracy in the evaluation of the T staging of gastric cancerin vitro and thus potentially enables preoperative histopathologic staging. |
| 关 键 词： | MRI 胃癌 体外 图像显示 磁共振成像 评估精度 共振系统 手术切除 |
| 收稿时间： | 2009-06-29 |
MRI of gastric carcinoma:Results of T and N-staging in an in vitro study |
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| Il Young Kim,Sang Won Kim,Hyeong Cheol Shin,Moon Soo Lee,Dong Jun Jeong,Chang Jin Kim,Young Tong Kim. MRI of gastric carcinoma:Results of T and N-staging in an in vitro study[J]. World journal of gastroenterology : WJG, 2009, 15(32): 3992-3998. DOI: 10.3748/wjg.15.3992 | |
| Authors: | Il Young Kim Sang Won Kim Hyeong Cheol Shin Moon Soo Lee Dong Jun Jeong Chang Jin Kim Young Tong Kim |
| Affiliation: | Il Young Kim, Sang Won Kim, Hyeong Cheol Shin, Young Tong Kim, Department of Radiology, Soonchunhyang University Cheonan Hospital, 23-20 Bongmyungdong, Cheonan, Choongnam 330-720, South Korea;Moon Soo Lee, Department of Surgery, Soonchunhyang University Cheonan Hospital, 23-20 Bongmyungdong, Cheonan, Choongnam 330-720, South Korea;Dong Jun Jeong, Chang Jin Kim, Department of Pathology, Soonchunhyang University Cheonan Hospital, 23-20 Bongmyungdong, Cheonan, Choongnam 330-720, South Korea |
| Abstract: | AIM:To determine the accuracy of 1.5-T magnetic resonance imaging (MRI) in the evaluation of gastric wall invasion and perigastric lymph node metastasis in gastric adenocarcinoma.METHODS:Twenty resected gastric specimens containing 20 tumors were studied with a 1.5-T MR system using a commercial head surface coil.MR scanning was performed with a T1 weighted image (TR/TE=500/20),and a T2 weighted image (TR/TE=2500/90).MR findings were compared with pathologic findings.RESULTS:A T1-weighted image demonstrated three layers in the normal gastric wall.All of the gastric tumors were well demonstrated by lesions and location.In a MRI findings of gastric wall invasion,there was 1 case of T1,7 of T2,11 of T3.Pathologic results of resected specimens included 3 cases of pT1,4 of pT2,and 12 of pT3.The accuracy of T staging with MRI was 74% (14 of 19).MRI findings of lymph node metastasis included 6 cases of N0,13 cases of N1.The accuracy of the N staging with MRI was 47% (9 of 19).CONCLUSION:MRI has a high diagnostic accuracy in the evaluation of the T staging of gastric cancer in vitro and thus potentially enables preoperative histopathologic staging. |
| Keywords: | Gastric cancer Magnetic resonance imaging Neoplasm Staging Stomach Depiction of wall layer |
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