脊髓萎缩（附2例报告）

本文报告了两例脊髓萎缩，并结合文献复习讨论了该病的好发部位、病因、临床表现、诊断和治疗。脊髓萎缩的病因多为继发性，也可为特发性。根据临床表现结合脊髓ＣＴ造影及ＭＲＩ检查，可以明确诊断。     

肺癌脑转移的CT研究

目的:研究分析肺癌脑转移瘤的CT特征和规律。材料与方法:回顾总结并分析经病理证实的74例肺癌脑转移病例,就其转移灶的CT特征和规律做出评价。结果:肺癌脑转移以顶、额叶为好发部位,转移灶主要表现为结节状均一强化和环状强化中心低密度,可单发或多发。瘤周水肿以腺癌和低分化癌较明显。环状强化中心低密度灶周水肿较结节均一强化灶周水肿明显。结论:CT增强扫描能清楚地显示转移灶的大小、部位、形态、边缘状况和密度变化,是肺癌脑转移的首选检查方法。     

MRI and CT in Krabbe's disease: case report

A case of infantile Krabbe's disease was first recognised as areas of relatively increased density on CT in the thalamus lateral geniculate body and dentate nucleus. These sites were subsequently shown on MRI to have a paramagnetic effect, being characterised by short T2 and T1. Subsequent examinations showed development of atrophy and high signal in white matter.     

Results of surgical treatment in patients with arachnoid cysts

Summary A retrospective study of 35 patients operated upon for arachnoid cysts during the last 10 years was carried out. In 19 patients treated by craniotomy, membrane resection and drainage into the basal cisterns, clinical improvement could be noted in 13 cases. Correspondingly on the CT-controls the cysts were found to have disappeared in two cases and were reduced in size in seven patients.In 11 patients, however, who were initially treated by a shunting procedure, seven patients became free of symptoms. Postoperative CT-controls showed in three cases a significant reduction of the size of the cyst, which remained unchanged in two other cases.In five patients with the combination of a nonspace-occupying arachnoid cyst and subdural effusions, drainage of the latter only was sufficient to relieve the clinical symptoms.The prominent Endings were the high complication rate of the primary or secondary shunting procedures (48%), as well as the close correlation between the clinical outcome and the postoperative CT-controls.     

Belt device for simplified CT-guided puncture and biopsy: A technical note

A new radiolucent device for increased accuracy of CT-guided fine-needle punctures permits precise determination of the optimum angle, depth, and position of the fine needle, which can be preset from the data supplied on the CT monitor. Puncture and repeat scans for controlling the tip of the needle can be performed with the patient in a stationary position. The device is designed as a belt that holds a needle holder sheath and a goniometric scale, both of which can be moved to varying positions around the patient.     

腰椎椎管狭窄症的CT诊断及临床意义

腰椎椎管狭窄症是指腰椎中央椎管和外侧椎间孔任何部位容量的减少与内容物的不相适应所引起的临床综合症[1] 。ＣＴ能显示椎管内的各种软组织结构及相邻结构的解剖关系 ,能明确狭窄的病因 ,对临床治疗有着重要的指导作用。1　临床资料1.1　病例　 1994年 3月～ 1995年 6月腰椎扫描有椎管狭窄症者 135例 ,男 75例 ,女 6 0例 ,年龄 2 0～ 76岁。扫描方法为椎间盘常规扫描 ,即椎间隙中间层为中心 5ｍｍ层厚连续扫描 ,如临床怀疑有椎管狭窄症 ,则于每个椎骨再加 1层 ,扫描平面位于椎板上部水平 ,通过两侧椎弓根 ,并与椎体上缘平行。扫描包括Ｌ2 …     

霉菌性上颌窦炎的CT表现——附3例报告

霉菌性上颌窦炎较少见,与炎症、肿瘤难以区别。本文报告经手术、病理证实的3例,以提高对本病的认识。1 临床资料 例1,男,50岁,反复左上颌牙疼痛,伴同侧头痛8年,加重1周。查体:左侧鼻腔狭窄,中下鼻甲肥大,左中鼻道腔前端有一花生米大小新生物。横断及冠状位     

肝内原发性恶性纤维组织细胞瘤的CT诊断（1例报道及文献复习）

恶性纤维组织细胞瘤(malignant fibrous histiocytoma,MFH)是发生率仅次于平滑肌肉瘤的软组织肉瘤[1],多发生于四肢、躯干和腹膜后区,转移和术后复发率较高,转移至肝脏的较常见[2],但原发于肝脏的仅见个案报道[3,4].现就本院1例经手术证实的肝脏原发恶性纤维组织细胞瘤及既往文献报道,做一综合性分析.     

次氯酸对人血清白蛋白的氧化修饰影响及与高级氧化蛋白产物的关系

目的 研究次氯酸对人血清白蛋白(HSA)的氧化修饰影响及与高级氧化蛋白产物(AOPPs)之间的关系。 方法 有氧条件下在恒定浓度的HSA(60 mg/ml)内加入不同浓度次氯酸(0、1、5、10、20、30、40、50、60 mmol/L，最终浓度)，观察氧化剂对HSA的修饰作用。凝胶排阻色谱法检验HSA氧化修饰结果，在线光谱扫描(190 nm~400 nm)分析修饰产物的光谱特性。结果 次氯酸可氧化修饰人血清白蛋白，其修饰产物主要为二聚体HSA和六聚体HSA。发现次氯酸对HSA单体和HSA二聚体的氧化修饰为一级反应；对诱导生成的AOPPs为准一级反应；而对诱导生成的HSA六聚体则为二级修饰反应。同时发现白蛋白对AOPPs的主要贡献者是六聚体形式的HSA，光谱分析表明HSA聚集体的最大吸收峰发生红移，提示HSA聚集体是由于蛋白中的酪氨酸残基通过氧化交联方式而聚集形成的。 结论 HSA经次氯酸处理后主要发生了蛋白聚集。而对AOPPs的主要贡献者是六聚体形式的HSA。