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颞颌关节(TMJ)X线造影是近年来用以对TMJ关节盘移位作客观诊断的一种方法,因摄片精确和易于操作已被广泛应用,但在造影中常给患者带来疼痛。初期患者用电子计算机断层X线摄影(CT)诊断关节盘移位是有帮助的,并能用此方法进一步改进关节X线摄影研究。本文将讨论75例18个月以上的CT检查发现。研究对象是75例(男9人,女66人)有关节盘移位的临床证据患者,年龄12～64岁。均采用CT检查,其中13例在行CT检查前两周内作过关节X线造影。从75例CT检查结果中除三例由于技术原因不能作为诊断依据外,余下72例中有69例(92%),诊断为关节盘前移位(其中35例为
Temporomandibular joint (TMJ) radiography is one of the methods used to objectively diagnose TMJ disc displacement in recent years. It has been widely used in radiography for its accuracy and ease of operation. However, radiography often causes pain to patients. Early patients with computed tomography (CT) diagnosis of disc displacement is helpful, and can use this method to further improve the joint X-ray studies. This article will discuss 75 cases of 18 months or more CT examination found. The subjects were clinical evidence of disc displacement in 75 patients (9 males and 66 females) aged 12-64 years. All patients underwent CT examination. Thirteen patients underwent X-ray arthroscopy within two weeks before CT examination. Of the remaining 75 cases, except for three cases, which were not diagnosed due to technical reasons, 69 of the remaining 72 cases (92%) were diagnosed as anterior disk displacement (35 cases were