摘要
目的:评价同、反相位化学位移成像中的信号改变及信号强度比在鉴别脊柱良、恶性病变中的应用价值。方法:63例脊柱病变患者行MRI梯度回波同/反相位检查,良性病变36例,恶性病变27例,并以63例中的正常椎体作为正常组。分析病变椎体在同、反相位上的信号改变及其信号强度比(反相位信号强度/同相位信号强度),对三组信号强度比值进行统计学分析。结果:19(52.8%)例椎体良性病变组显示为反相位低信号、同相位高信号;16(59.3%)例椎体恶性病变显示为反相位高信号、同相位低信号。正常椎体组、椎体良性病变组及椎体恶性病变组的信号强度比均数和标准差分别为:0.71±0.17、0.90±0.13和1.04±0.20(P<0.01)。结论:梯度回波MRI同、反相位成像的病灶信号强度改变及信号强度比对预测椎体良恶性病变的性质有重要价值。
Objective：To evaluate the value of signal intensity （SI） and signal intensity ratio （SIR） on in-phase （IP） and opposed-phase （OP） chemical shift imaging in distinguishing benign and malignant vertebral lesions. Methods： 63 cases underwent MR gradient echo IP and Op studies. There were 36 cases with benign vertebral lesions and 27 cases with malignant lesions. In these 63 cases,normal vertebrae were selected as the control group. The SI and SIR （SI OP/SI IP） on OP and IP of the vertebral lesions as well as SIR of the above-mentioned 3 groups （benign, malignant, normal control） were compared and analyzed. Results： In this studied population, 19 （52.8% ） cases with benign vertebral lesion showed low SI on OP and high SI on IP,while 16 （59.3%） cases with malignant lesion showed high SI on OP and low SI on IP. The mean SIR of the normal vertebrae.benign and malignant vertebral lesions were 0. 71±0.17.0. 90±0.13 and 1.04±0.20 （P〈 0.01 ）.Conclusion： SI and SIR on OP and IP showed significant value in predicting the nature of a vertebral lesion.
出处
《放射学实践》
2006年第7期712-715,共4页
Radiologic Practice
关键词
磁共振成像
同相位
反相位
信号强度比
脊柱
Magnetic resonance imaging
In-phase
Opposed-phase
Signal intensity ratio
Vertebrae
