子宫腺肌症的低场MRI表现

目的:探讨子宫腺肌症低场MRI表现及其诊断价值.方法:回顾性分析手术病理证实的35例子宫腺肌症MRI图像,并与病理对照研究.结果:弥漫型子宫腺肌症12例,9例结合带弥漫性均匀或不均匀增厚,3例结合带显示不清,T2WI表现结合带-肌壁弥漫性增厚.呈与结合带信号相近低信号病灶中夹杂点状、短条状或小囊状高信号,T1WI等信号10例、点状或小囊状高信号2例;局限型子宫腺肌症(腺肌瘤)23例26个肿块,后壁14个、前壁10个、底壁2个.紧靠子宫内膜边缘21个、邻近5个,为卵圆形、不规则形或类圆形,边缘模糊22个、较清楚4个.T2WI肿块均与结合带信号相近低信号内夹杂灶性高信号,T1WI肿块呈稍低或等信号,其中9个夹杂少量灶性高信号.结论:①子宫腺肌症的低场MRI表现具有特征性,能够反映本病的病理改变.其形态学特点是结合带-肌壁弥漫性增厚或呈边界不清的肿块,其信号特点是低信号区内混杂灶性高信号(T2WI高信号灶为异位内膜岛,T1WI高信号为出血灶);②矢状T2WI及IRFSET2WI图像对病灶显示最清晰,是子宫腺肌症MRI最佳扫描序列.     

子宫腺肌症的MRI表现

目的:探讨子宫腺肌症的MRI特征性表现,评价MRI对其诊断价值。方法:回顾性分析25例经病理证实的子宫腺肌症的MRI表现。结果:25例子宫体部均不同程度增大,其中弥漫性子宫腺肌症11例,T2WI显示子宫结合带弥漫性增厚,且厚度均大于12mm,其中9例T2WI显示病灶内可见散在小囊状高信号;局限性子宫腺肌症14例,T2WI表现为子宫体出现与结合带信号相近的低信号肿块,多发生于子宫后壁,边界不清,且信号欠均匀,其中12例T2WI显示病灶内可见散在点状高信号,病理证实小囊状高信号为异位的内膜岛。小囊状高信号为子宫腺肌症的特征性表现,也是其与子宫肌瘤的重要鉴别点之一。结论:子宫腺肌症的MRI表现具有特征性,对子宫腺肌症有重要诊断价值。     

子宫腺肌症的MRI诊断

目的 探讨子宫腺肌症的MRI表现及其诊断价值.方法 回顾性分析32例经手术和病理证实的子宫腺肌症病例的MRI资料,观察其MRI表现.结果 32例子宫腺肌症患者的MRI表现:①弥漫型子宫腺肌症21例,表现为子宫体积增大,轮廓光滑,结合带弥漫性增厚,与肌层分界不清,病灶在T1WI上呈等信号,9例内见点状高信号,在T2WI上呈低信号,内见散在点状高信号.②局限型子宫腺肌症11例,表现为子宫体部或底部局限性增大,相应部位结合带增厚,共发现18个病灶,在T1WI上呈等信号,5例内见点状高信号;T2WI上表现为与结合带信号相近的肿块影,7例内见点状高信号.③有12例合并其他妇科疾病,其中子宫肌瘤9例,卵巢囊肿3例.结论 MRI能对子宫腺肌症作出明确诊断,在其定性、定位及鉴别诊断中具有重要价值.     

46例子宫腺肌症的MRI征象分析

目的:分析子宫腺肌症的MRI表现及其诊断价值。方法:回顾性分析46例经手术病理证实的子宫腺肌症患者的MRI资料,并与术后病理学结果进行对照分析。结果:MRI检查结果与手术病理结果有高度的一致性。子宫腺肌症的MRI主要表现:①T2WI和翻转恢复序列图像显示结合带弥漫性或局限性增厚(12 mm),或者外肌层内见信号类似结合带的边界欠清的肿块;②T2WI病灶内出现点状或斑片状高信号灶,有时T1WI时也可出现;③T1WI增强扫描示病灶强化程度近似结合带;④子宫体积增大,轮廓光整;⑤T2WI和翻转恢复序列图像有时显示子宫带状分层结构(内膜、结合带)变形。结论:MRI对子宫腺肌症的定性和定位具有很高的诊断价值     

子宫腺肌症的MRI表现

目的 探讨子宫腺肌症的磁共振(MRI)征象,为临床诊断提供依据.方法 对43例经手术和病理证实的子宫腺肌症病例的MRI成像检查进行回顾性分析.结果 在43例患者中,弥漫型子宫腺肌症26例,局限型子宫腺肌症17例;其中21例患者合并有子宫肌瘤,17例合并盆腔内巧克力囊肿,15例合并卵巢囊肿.弥漫型子宫腺肌症的MRI成像表现为子宫体积增大,子宫壁结合带弥漫性增厚,结合带与肌层分界不清;在T1WI上表现为等信号,在T2WI上表现为等或略低信号,混杂有散在多发点状高信号灶,宫腔受压变小.增强扫描病灶轻度强化.局限型子宫腺肌症的MRI成像表现为子宫体部或底部局限性增大,相应部位见结合带增厚,与肌层分界不清,呈类圆形或椭圆形,在T1WI上呈等信号,在T2WI上呈略低信号,病灶信号可不均匀,中央部可有多发点状高信号.增强扫描增厚的结合带轻度强化,与强化的子宫肌相比信号略低.MRI同时很好地显示了子宫肌瘤、盆腔内巧克力囊肿和卵巢囊肿等并发症.结论 子宫腺肌症以子宫结合带增厚为特征,MRI能全面显示腺肌症的类型,病变范围和并发症,是评价子宫腺肌症的有效无创伤性影像学手段.     

子宫腺肌症的MRI表现及诊断价值

目的探讨子宫腺肌症MRI特点及其诊断价值。方法回顾性分析经手术病理证实的31例子宫腺肌症的临床及MRI资料,应用自旋回波和快速自旋回波序列,常规行横断面FSE T2WI、SE T1WI及矢状面FSE T2WI扫描,其中10例病人加扫子宫解剖轴位及矢状位脂肪抑制FSE T2WI序列,分析其MR表现。结果弥漫性子宫腺肌症19例,以后壁结合带明显增厚为主的有11例。局限性子宫腺肌症12例,病变位于后壁7例,前壁4例,底部为主1例。28例T2WI呈与结合带信号相近的低信号影为主,内可见多发散在点状、小囊状高信号灶,21例T1WI呈与子宫肌层等信号,其中9例于T1WI也见点状、小囊状高信号。3例于肌层内见局限性类圆形结合带样信号。结论MRI可明确子宫腺肌症的范围及部位,脂肪抑制序列是非常有价值的检查方法。     

子宫腺肌症离体标本低场MRI研究

目的:分析子宫腺肌症离体标本的低场MRI表现,探讨子宫腺肌症的低场MRI诊断.材料和方法:采用OUTLOOK PROVIEW 0.23T MR对17例子宫腺肌症离体标本行采用矢状位T1WI、T2WI及irT2WI平扫并与病理进行对照分析.结果:子宫体积增大呈类球形,结合带增厚,厚度为10.4～28.6mm,平均15.2mm.病变主要位于子宫后壁肌层14例和前壁3例.所有标本,T2WI与irT2WI示子宫肌层内低信号区内夹杂斑片状高信号影,TIWI示子宫肌层内散在斑点状低信号影,6例标本肌层内少许斑点状高信号.T2WI/irT2WI呈高信号而T1WI呈低信号的病理上为异位的内膜岛,在T2WI与TIWI均呈高信号的为异位内膜出血灶.结论:低场MRI对子宫腺肌症诊断有重要价值,其能真实有效的反映出病变的病理特征,T2WI与irT2WI是病灶显示的敏感序列.     

低场MRI对诊断子宫肌瘤与子宫腺肌病的应用价值

目的分析子宫肌瘤与子宫腺肌病的MRI表现特点,探讨MRI对两病的诊断价值。方法回顾性分析25例经手术病理证实的子宫肌瘤和子宫腺肌病患者MRI资料。结果16例子宫肌瘤患者中,共检出病灶24个。T1WI表现均为等低信号,不易识别;T2WI表现为低、高或混杂信号;病灶多有包膜、边界清晰,周围可见低或高信号环;增强扫描可见病灶不同程度强化。7例子宫腺肌病中,弥漫性5例、局限性2例。T1WI及T2WI信号不均,T2WI表现结合带弥漫性或不规则增厚,结合带改变具有诊断特异性;病灶无包膜与周围组织界线不清;增强扫描无明显强化,为等或低信号：2例为子宫肌瘤合并子宫腺肌病。T2WI及增强扫描有助于两病的显示及鉴别诊断。1例子宫肌瘤误诊为子宫腺肌病,1例子宫腺肌病误诊为子宫肌瘤,MRI对两病诊断的敏感性100％,准确率92％。结论选择合适的MRI检查序列与方法对两病鉴别诊断只有重要的价值。     

子宫腺肌症的MRI研究

目的　探讨MRI对子宫腺肌症的诊断价值及其表现特征。方法　对 46例疑子宫腺肌症的患者分别行B超和MRTSE序列T1WI、T2 WI和IR序列T1WI扫描 ,同时行增强检查 ,并与术后病理进行对照分析。结果　以手术病理为标准 ,MRI诊断子宫腺肌症的特异性、灵敏性和准确性分别为 10 0 %、94.74%和 97.14 % ,均明显较B超高。子宫有不同程度的增大 ,轮廓光滑 ,有时可见子宫分层结构变形。病灶表现为结合带弥漫性 /局限性增厚或外肌层结合带样信号灶 ,T2 WI可混杂有局灶性高信号。当有出血时 ,T1WI也可混杂局灶性高信号灶。增强后病灶呈结合带样强化。结论　MRI对子宫腺肌症的定性、定位具有很高的诊断价值 ,可作为B超检查的重要补充手段     

子宫腺肌症离体标本的MRI研究

目的 研究离体子宫腺肌症的MRI特征及其组织病理基础，为MRI诊断子宫腺肌症提供实验基础。资科与方法 对16个非子宫体病变、36个子宫腺肌症和30个子宫平滑肌瘤手术切除的新鲜子宫进行MRI扫描。全部标本均采用TSE序列T1WI、T2WI及IR序列T1WI，在各序列上观察正常子宫壁MRI结构及子宫腺肌症的MRI特征并与子宫平滑肌瘤比较，其结果与组织病理学对照。结果 MRI能显示正常子宫与组织学分层相关的2～4层结构。子宫腺肌症的MRI表现可以体现相关的病理基础，病灶表现为结合带弥漫性／局限性增厚或外肌层结合带祥信号灶，T2WI可混杂有局灶性高信号；当有陈旧性出血时，T1WI也可混杂局灶性高信号灶。子宫有不同程度的增大，轮廓光滑，有时可见子宫分层结构变形。根据这些特征有助与子宫肌瘤鉴别。结论 子宫腺肌症离体标本具有特征性的MRI征象，MRI在子宫腺肌症的诊断和鉴别诊断中有着重要作用。     

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.