摘要
目的探讨多层螺旋CT(MSCT)在肠道肿瘤诊断中的价值。方法回顾性分析小肠肿瘤性病变20例,结肠癌51例。所有患者采用口服使大小肠充盈的肠道准备方法,运用工作站多平面重建(MPR)及多平面容积重建(MPVR)方法获得冠状面、矢状面及斜位图像重建,结合横断面图像,进行肿瘤性病变的MSCT征象分析和诊断价值研究。结果肠道肿瘤性病变累及最多的部位为左半结肠(29%)、回盲部(25%)和右半结肠(25%);肠道肿瘤性病变CT征象显示最多的为表面毛糙征(95.77%);经手术证实的CT征象敏感度、特异度和准确率最高的均为系膜和后腹膜淋巴结增生(93.02%、96.55%和95.77%);肠道肿瘤性病变病灶平扫CT值为(40.7863±5.9793)Hu,增强动脉期CT值为(72.3255±8.7543)Hu,增强门脉期CT值为(82.7235±10.7800)Hu;在平扫期、增强动脉期和增强门脉期之间CT值依次升高,三期CT值之间的差异有统计学意义(P=0.000);肠道肿瘤性病变病灶CT测量的纵径为(37.9353±13.8319)mm,横径为(23.0020±11.9925)mm。结论MSCT是一种操作简单、无创伤和有效的肠道肿瘤性病变的诊断方法,各种MSCT征象的分析和CT值的测定对肠道肿瘤性病变具有诊断意义。
Objective To evaluate the role of multi-slice spiral CT（MSCT） imaging in the diagnosis of tumorous bowel diseases. Methods Twenty cases of small bowel tumor and 51 cases of colon cancer were retrospectively analyzed.All the patients were examined with MSCT.Bowel preparation was done by oral administration.Coronal plane,sagittal plane and oblique position imaging reconstruction was performed by workstation multiplanar reconstruction（MPR）and multiplanar volume reconstruction（MPVR）,and sectional plane imaging was combined for the analysis of MSCT signs of tumorous bowel diseases and study of diagnostic values. Results Tumorous bowel diseases mostly involved left hemicolon（29%）,ileocecal junction（25%） and right hemicolon（25%）.The most frequent CT sign of tumorous bowel diseases was ＂coarse surface＂（95.77%）.The most valuable CT sign of tumorous bowel diseases was ＂lymph node hyperplasia of mesentery and posterior belly＂,which had the highest sensitivity（93.02%）,specificity（96.55%） and accuracy（95.77%）.The average CT attenuation of pre-enhancement,artery phase and portal phase of tumorous bowel diseases were（40.7863±5.97930） Hu,（72.3255±8.75426） Hu and（82.7235±10.7800） Hu,respectively.There were significant differences among the CT attenuation of three phases（P=0.000）.The average bowel wall thickness of the focus was（23.0020±11.99254） mm and the average extent was（37.9353±13.83192） mm. Conclusion MSCT is a simple,noninvasive and effective method for the diagnosis of tumorous bowel diseases.The analysis of MSCT signs and the measurements of CT attenuation are valuable for the diagnosis of tumorous bowel diseases.
出处
《上海交通大学学报（医学版）》
CAS
CSCD
北大核心
2008年第8期937-940,共4页
Journal of Shanghai Jiao tong University:Medical Science
关键词
小肠
结肠
肿瘤
X线
计算机断层
small bowel
colon
tumor
X-ray
computer tomography
