Morphological,Functional, and Tissue Characterization of Silent Myocardial Involvement in Patients With Primary Biliary Cholangitis

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Differentiating benign from malignant cardiac tumors with cardiac magnetic resonance imaging

Background

The purpose of this analysis is to describe the differences in cardiac magnetic resonance characteristics between benign and malignant tumors, which would be helpful for surgical planning.

超声造影增强模式鉴别软组织肿块良恶性

Objective: To investigate the ability of contrast enhancement patterns of contrast-enhanced ultrasound in differentiating benign and malignant soft tissue tumours.     

脑膜病变MRI异常强化类型与病因的相关性分析

目的 探讨各种脑膜病变脑膜MRI强化类型与病因的关系。方法 回顾性分析78例资料完整，MRI增强扫描脑膜异常强化的非脑膜瘤。结果 78例中，脑膜癌病16例（硬脑膜-蛛网膜型2例，软脑膜-蛛网膜下腔型11例，混合型3例）；感染性脑膜炎18例（硬脑膜-蛛网膜型3例，软脑膜-蛛网膜下腔型13例，混合型2例）；脑梗死22例（软脑膜-蛛网膜下腔型18例，混合型4例）；开颅术后15例（硬脑膜-蛛网膜型10例，混合型5例）；硬膜下积液（血肿）7例，均为硬脑膜-蛛网膜型。结论 MRI双倍剂量Gd-DTPA增强扫描对脑膜病变敏感性高，脑膜强化类型与各种病因侵犯脑膜三层结构的方式和程度有关。     

Early computed tomographic scanning after resection of brain tumors in children

Enhanced and non-enhanced computed tomography (CT) brain scans were performed within 72 h of surgery on 21 children in whom brain tumors had been resected totally or subtotally, and scans were repeated at varying intervals thereafter. Biopsies of the resection margins were performed in 12 patients at the end of the surgical procedure. The immediate CT scan showed enhancement in the resection margin in 13 of the 21 patients and in 9 of the 13, the enhancement disappeared on follow-up scans. There was discordance between the results of immediate CT scan examination and the biopsies of the resection margins in 7 of the 12 cases. The advantages and disadvantages of an immediate postoperative scan versus a more delayed CT scan are discussed.     

臂丛加强化麻醉后并发颈部抽动9例分析

目的探讨臂丛加强化麻醉后颈部抽动的原因及防治。方法对近年来在麻醉方法、用药相同,术后颈部抽动患者的观察治疗过程进行分析。结果臂丛麻醉并发颈部抽动给予充分镇静后可完全治愈。结论麻醉后并发颈部抽动为药物副作用及颈局部刺激的综合作用。     

MRI同层动态增强对垂体微腺瘤的诊断价值

目的：分析垂体微腺瘤的MPd同层动态增强特征。方法：对40例临床怀疑为垂体微腺瘤的病人行同层动态增强MPd扫描，并绘出时间一信号强度曲线图。结果：40例病人中共检出垂体微腺瘤26例。同层动态增强后垂体微腺瘤的MPd表现为圆或椭圆形的低或稍低信号，似“充盈缺损”；垂体微腺瘤的最大信号强度多出现在注入造影剂后32～96s，以64s最明显。结论：同层MPd动态增强对垂体微腺瘤的诊断有较高价值。     

原发性胸椎原始神经外胚层肿瘤的动态增强MRI表现

目的 初步探讨原始神经外胚层肿瘤(PNET)的动态增强MRI表现，以及对其诊断及鉴别诊断的价值。方法 用动态增强MRI方法对已手术和病理证实的2例胸椎PNET行3次MR检查并进行前瞻性研究。结果 在信号强度-时间和对比增强率．时间曲线上，2例PNET3次检查均表现为快升慢降型，即肿瘤早期就开始迅速增强，上升峰极陡，60～120s即达到高峰水平，然后保持平坦，3．5min内未见明显下降曲线。结论 动态增强MRI扫描能帮助对PNET进行早期诊断和鉴别诊断，从而为临床选择治疗方案及估计预后提供较为可靠的依据。