MRI诊断与治疗肢体血管瘤的价值

目的 探讨MRI对血管瘤诊断和治疗的指导价值.方法 对15例肢体血管瘤患者,使用Siemens 1.5T超导型磁共振扫描仪.行矢状、冠状T1加权和T2加权扫描,然后注射Gd-DTPA进行增强.并对8例患者行CEIRI增强血管成像.15例中10例患者进行了手术治疗,并与术前MR/检查结果进行比对.结果 所有患者T1WI显示为不均匀的混杂信号,以低信号为主,边界不清楚.T2WI亦显示为不均匀的混杂信号,而以高信号为主.Gd-DTPA增强后,肿瘤影像明显强化,可清楚显示其与周围组织的关系.CEMRI血管成像,可见肿瘤组织内成团的血管畸形图像.10例患者术中所见与MRI影像显示完全一致.结论 MRI对血管瘤的定性及准确的定位诊断、血管瘤的侵犯范围以及对术后疗效的评价均有重要的指导意义.

The value of MRI for the diagnosis and treatment of hemangiomas

Objective To investigate the guidance value of MRI for the diagnosis and treatment of hemangiomas.Methods Fifteen patients with hemangiomas in the extremities were studied with Siemens 1.5 Tesla superconducting magnetic resonance imaging scanner.Vertical plane,T1-weighted and T2weighted coronal plane sequences,and then scare with Gd-DTPA enhancement were applied.Eight cases had additional CEMBI enhanced angiograph.Surgical intervention was done in 10 cases.The intraoperative findings were compared with preoperative MR[results.ResultsT1WI in all patients showed heterogeneous mixed signals dominated by low signal,with obscure boundary.T2WI also showed heterogeneous mixed signals dominated by high signal.After Gd-DTPA enhancement,tumor image was obviously enhanced.The relationship between the tumor and its surrounding tissue was clearly shown.The conglohated vascular malformation in the tumor tissue could be seen by CEMRI angiograph.The intraoperative findings of those 10 patients were exactly the same as the MRI images.Conclusion MRI is valuable in qualitative diagnosis and precise localization of hemangioma.It also provides important information for evaluating the scope of minor invasion and the prognosis of the surgery.