隐性骨折的MRI诊断

目的：探讨骨隐性骨折的MRI诊断价值。方法：对25例外伤患者均行X线平片及MRI检查，10例患者同时行CT检查，受伤部位分别为股骨髁、胫骨近端及MRI检查，10例患者同时行CT检查，受伤部位分别为股骨髁、胫骨近端及胸椎、腰椎。结果：本组25例X线平片均未见骨折征象，CT检查10例亦无明显骨折征象，仅见骨小梁结构较乱，周围软组织肿胀；MRI检查25例显示隐性骨折呈现长T1、短T2或不规则状线形异常信号，其周围可见不规则长T2骨挫伤水肿异常高信号影，均伴有周围软组织水肿的异常信号。结论：MRI能早期诊断骨隐性骨折，若患者局部症状明显，X线检查无阳性征象者行MRI检查应为最佳检查手段。

MR IMAGING OF OCCULT FRACTURES

Objective:To investigate the value of MR imaging in diagnosing occult fractures.Methods:Twentyfive cases with trauma were examined using radiography and MR imaging,ten cases also underwent CT examinations .The position of trauma occurred in condyle of femur,proximal tibia,thoracic vertebra and lumbar vertebra.Results:All of the twenty five cases had normal radiographic results.Ten cases with CT scanning showed no obvious fractures,only with circumference soft tissues swelling and irregular trabeculae.Twenty five cases with occult fractures using MR imaging showed long T 1 and short T 2 linear and irregular abnormal signal.Irregular long T 2 abnormal high signs of bone bruise and circumference soft tissues edema were seen around the region of occult fractures.Conclusion:MR imaging could early determine the diagnosis of occult fractures.MRI should be the best examination when X ray plain films fail to reveal the cause of obvious symptom and positive physical examination.