CT在脾脏占位性病变诊断及鉴别诊断中的价值

目的探讨CT在脾脏占位性病变鉴别诊断中的价值。方法回顾性分析27例经手术病理证实的脾脏占位性病变的CT及病理学资料,分析脾脏占位性病变的CT特征。结果 27例脾脏占位性病变,其中良性占位16例,包括脾囊肿7例,脾脓肿3例,脾血管瘤4例,脾血管淋巴管瘤1例,脾淋巴管瘤1例;恶性占位11例,包括转移瘤8例,淋巴瘤3例。结论 CT对脾脏占位性病变有较高的诊断价值,可作为首选的影像学检查方法。     

脾脏多发占位性病变的CT、MRI表现

目的探讨脾脏多发占位性病变的CT、MRI表现。方法回顾性分析17例经手术病理证实的脾脏多发占位性病变患者的临床及影像学资料。结果 17例脾脏多发性占位性病变中脾戈谢病1例,间皮囊肿1例,隐球菌病1例,脾结核5例,淋巴瘤4例,脾脉管瘤5例。14例行CT检查,1例行MRI检查,2例行CT、MRI检查。CT和MRI可以很好的显示病灶大小、形态、密度/信号、强化特点,脾脏不同多发占位病变各有一定的CT及MRI特点。结论 CT、MRI是脾脏多发占位性病变的重要检查手段,MRI对某些脾脏病变的诊断及鉴别诊断价值优于CT,可作为首选检查方法之一。     

脾脏囊性占位性病变的螺旋CT诊断价值

目的:探讨脾脏囊性占位性病变的螺旋CT表现及其诊断价值。方法:回顾性分析经手术病理或穿刺活检证 实19例脾脏囊性占位性病变的CT表现。19例均行CT平扫,16例行动态增强扫描。结果:19例中脾囊肿10例,脾转移 瘤4例,脾脏淋巴管瘤2例,脾海绵状血管瘤2例及脾原发性淋巴瘤1例。CT对脾脏囊性占位性病变的检出率极高,能 明确肿块性质、范围及其与周围组织的关系。结论:平扫和动态增强螺旋CT检查对脾脏囊性占位性病变有较高的定性 诊断价值。     

脾脏占位性病变的超声诊断

目的:探讨脾脏占位性病变的超声诊断价值.方法:分析15例经病理和临床证实的脾脏占位性病变的超声资料,包括脾卡波西氏肉瘤1例,脾血管肉瘤1例,脾弥漫性非何杰金氏淋巴肉瘤1例,脾非霍奇金氏淋巴瘤2例,脾何杰金氏病(结节型)1例,脾转移癌4例,脾淋巴管瘤2例,脾囊肿2例,脾脓肿1例.结果:超声检查能清楚的显示,脾脏占位病变的大小、形态回声特征与周围器官组织的关系;超声对脾脏占位性病变的检出率100%,定性准确率为73.3%.结论:超声对脾脏占位性病变有较高的诊断价值,可作为首选的影像学检查方法.     

幕下占位性病变的CT和MRI诊断

目的：探讨幕下占位性病变的CT和MRI表现及特征，提高对幕下占位性病变的定性诊断水平。方法：回顾性分析我院37例经临床和／或手术、病理证实的幕下占位性病变的CT和MRI和MRI表现，本组CT定位、定性准确率为79％、69％；MRI为96％、90％。结论：CT和MRI对该区占位性病变的诊断和鉴别诊断有重要价值。表现。结果：37例中星形细胞瘤6例，脑膜瘤6例，听神经瘤5例，转移瘤5例，髓母细胞脑瘤4例，血管母细胞脑瘤4例，蛛网膜囊肿3例，室管膜瘤及动脉瘤、三叉神经瘤、胆脂瘤各1例、幕下占位性病变中脑内病变22例，脑外病变15例，该区占位性病变大部分有特征性的CT     

不典型肾实质内占位的高场强MRI与螺旋CT诊断价值分析

目的：评价高场强MRI与螺旋CT平扫与动态增强检查对不典型肾实质内占位的诊断价值。方法：37例肾实质内实性占位病变，包括肾癌21例，少脂肪血管平滑肌脂肪瘤6例，复杂良性囊性病变7例，肾嗜酸性细胞瘤1例，肾蔓状血管瘤伴出血1例，多房囊性肾瘤1例，均经1．5TMRI及螺旋CT平扫及多期动态增强检查，CT与MRI检查时间间隔2天至2月。所有病例均经手术病理证实。结果：高场强MRI检查对肾实质内不典型占位的诊断准确度为78．4％。高于螺旋CT检查的准确度(64．9％)。两者有显著差异性，P=0．025。MRI与CT检查相结合诊断准确度为89．2％，明显高于MRI及CT检查(P=0．003、0．001)。结论：MRI与螺旋CT检查相结合能明显提高不典型肾实质内占位的诊断准确度。     

脾血管平滑肌瘤一例

患者女，45岁。左上腹隐痛1个月，无发热，无恶心、呕吐。体检：腹部无压痛及反跳痛；脾肋下2cm扪及．边缘钝，质中.实验室检查：血常规示轻度贫血(血红蛋白77g/L)，血生化检查无异常，X线胸片检查未见异常。B超提示脾增大，见约87cm团块，内见多数团状稍强回声：诊断为脾脏占位性病变：增强CT扫描：脾脏内巨大实质性占位，     

脾脏多发占位性病变25例CT扫描的诊断意义

脾脏占位性病变的检出率随着CT和MRI扫描技术的广泛应用已大大提高，但由于占位性病变的影像学表现常很相似，因而，通过影像学对其定性仍较难。为对脾脏占位性病变的诊断及鉴别诊断提供更趋完善的依据，我们将2002年8月～2003年8月，经CT和MRI检查，并经手术及穿刺活检、病理确诊的脾脏多发占位性病变25例进行回顾性分析。     

脾脏占位性病变的影像学表现

目的探讨脾脏占位性病变的影像学表现。方法选取45例经临床及病理证实的脾脏占位性病变患者的临床及影像学资料进行回顾性分析。结果45例患者中良性病变20例,其中血管瘤17例,错构瘤1例,假性囊肿1例,脾结核1例;恶性病变25例,其中淋巴瘤17例,转移瘤7例,炎性假瘤样滤泡树突细胞肉瘤1例。CT和MRI不仅可清楚显示病灶的形态、大小、数目、密度/信号、强化方式,还可显示脾脏的大小、周围淋巴结是否肿大、邻近脏器的改变。结论脾脏占位性病变种类繁多,不同病变具有一定的影像学特征,正确识别这些征象可以有效提高诊断的准确性。     

脾脏肿瘤的CT和MR表现及鉴别诊断

目的探讨脾脏肿瘤的CT和MR影像学特征,以提高对其诊断水平。方法搜集32例经病理和临床证实的脾脏肿瘤的CT和MR资料,包括脾血管瘤4例,脾淋巴管瘤2例,脾错构瘤2例,恶性淋巴瘤脾浸润6例,脾转移瘤18例,均行平扫加强化,对其CT和MR表现进行回顾性分析。结果 CT和MR对脾脏肿瘤检出率高,对病变大小、形态、密度(信号)及脾周围组织器官的显示较其它影像学检查更准确。结论根据脾脏肿瘤的CT和MR特征表现,大多数脾脏肿瘤能被CT和MR正确诊断;CT可作为首选的影像学检查手段,对其定性诊断有较高价值;MR对脾脏血管瘤较CT更具优势。     

The role of interventional radiology in trauma

Introduction Interventional Radiology has evolved into a specialty having enormous input into the care of the traumatized patient.In all hospitals,regardless of size,the Interventional Radiologist must consider their relationships with the trauma service in order to     

Diagnóstico ecográfico del neumotórax

The ultrasonographic diagnosis of pneumothorax is based on the analysis of artifacts. It is possible to confirm or rule out pneumothorax by combining the following signs: lung sliding, the A and B lines, and the lung point. One fundamental advantage of lung ultrasonography is its easy access in any critical situation, especially in patients in the intensive care unit. For this reason, chest ultrasonography can be used as an alternative to plain-film X-rays and computed tomography in critical patients and in patients with normal plain films in whom pneumothorax is strongly suspected, as well as to evaluate the extent of the pneumothorax and monitor its evolution.     

Carbohydrate Supplementation during Exercise: Does It Help? How Much is Too Much?

KEY POINTS· Carbohydrate intake during exercise can delay the onset of fatigue and improve performance of prolonged exercise as well as exercise of shorter duration and greater intensity (e.g., continuous exercise lasting about 1h and intermittent high-intensity exercise), but the mechanisms by which performance is improved are different.     

磁共振DWI和动态增强鉴别颅底脊索瘤和侵袭性垂体瘤的应用

目的 探讨磁共振扩散加权成像(DWI)和动态增强在颅底脊索瘤和侵袭性垂体瘤(IPA)鉴别诊断中的应用价值.方法 搜集经手术病理证实且影像学有鞍区破坏的颅底脊索瘤患者15例、向鼻咽部侵犯的IPA患者20例.测量二者的表观扩散系数(ADC)值,绘制受试者工作特征曲线(ROC),分析动态增强曲线的类型,统计达峰时间(TTP)、增强峰值(EP)和最大对比增强率(MCER),分析各个参数在鉴别诊断中的价值.结果 颅底脊索瘤的ADC值为(1.274±0.07)×10-3mm2/s,高于IPA ADC值(0.672±0.03) ×10-3 mm2/s(P ＜0.001),ADC阈值为0.964×10-3mm2/s时,ROC曲线下面积为0.997,敏感度为93.3％,特异度为100％.颅底脊索瘤时间-信号强度曲线(TIC)Ⅰ型14例,TICⅢ型1例,此例TICⅢ型者TTP约40 s;IPA TIC Ⅰ型7例,TICⅢ型13例.颅底脊索瘤和IPA的EP、MCER差异均有统计学意义(P ＜0.001).结论 ADC值和TIC的类型及其相关参数(EP,MCER)有助于颅底脊索瘤和IPA之间的鉴别.     

Treatment of intrahepatic arteriovenous fistula in hepatocellular carcinoma with N-butyl-2-cyanoacrylate

Primary hepatocellular carcinoma (HCC) continues to be one of the most common malignancies with an incidence of approximately one million cases per year and a dismal prognosis; some authors have reported a median survival of 1 ～ 2 months after diagnosis. Although surgery remains the only hope for cure, few patients are candidates[1,2].     

U50,488H对正常及缺氧心肌细胞L型钙电流的作用

目的 探讨心脏阿片受体和β-受体相互作用的机制。方法 采用全细胞膜片钳技术，观察U50，488H(β-阿片受体选择性激动剂)对正常和缺氧心肌细胞L型钙电流的作用。结果 U50，488H剂量依赖性(0．1～100μmol／L)抑制正常心肌细胞的L型钙电流及异丙肾上腺素(0．1μmol／L)激动的钙电流，而细胞缺氧后，这一抑制作用减弱；U50，488H对Forskolin(10μmol／L)激动的L型钙电流无明显影响。结论 β-阿片受体对β-受体信号的负性调节作用在细胞缺氧后减弱，其作用位点可能发生于β-受体与腺苷酸环化酶环节之间。     

Overtraining syndrome : la piste de la suractivité ?

Introduction

Overtraining is clearly a multifactorial disturbance. We aimed at evaluating the relative importance of overactivity and nutritional imbalances.

Methods

A comparison of 17 footballers with seven subjects with a diagnosis of overtraining evidenced that the two groups differ by energy expenditure resulting from physical activity (1573 ± 378.6 kcal/d from 804.7 ± 184.7 kcal/d) while food intake does not exhibit significant differences.

Conclusion

In this sample of subjects, inadequate food intake is found in both groups, so that overtraining appears rather characterized by a higher level of physical activity. Therefore, a relative energy deficit resulting from overactivity rather than dietary mistakes appears to explain the syndrome in these athletes, who are thus truly “overtrained”.     

Prenatal detection of brain anomalies with ultrasonography

Ultrasound is the first-line imaging study of the fetal brain performed at 12, 22 and 32 weeks of gestation. The very structured evaluation of biometric and morphological data, facilitated by the use of a checklist, ensures a high quality examination. All patients where an anomaly of any key element is suspected should be referred to a center dedicated to prenatal diagnosis for confirmation irrespective of the gestational age. Prenatal diagnosis plays a significant role in France since medical interruption of pregnancy until term is authorized.