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The direct CT signs of carcinoma of vaters ampulla is finding mass in the region of Vaters ampulla,and it is a reliable and effective method to diagnosis and the distinction diagnosis of ampullary carcinoma with the combination of the spiral CT scanning of thin-slice and image post-processing technology,and it offers important guidance role to its operation treatment.

结果：26例患者均有不同程度的胆道系统低位梗阻，25例CT图像能明确壶腹部肿块，能清晰显示肿瘤的部位，大小以及周围组织结构的关系。结论：壶腹部肿块是乏特氏壶腹癌的CT直接征象，应用螺旋CT薄层增强扫描与图像后处理技术相结合对壶腹癌的诊断和鉴别诊断是可靠而有效的方法，并对其手术治疗提供重要的指导作用。

Conclusion摘要:The direct CT signs of carcinoma of vaters ampulla is finding mass in the region of Vaters ampulla,and it is a reliable and effective method to diagnosis and the distinction diagnosis of ampullary carcinoma with the combination of the spiral CT scanning of thin-slice and image post-processing technology,and it offers important guidance role to its operation treatment.

结论摘要：壶腹部肿块是乏特氏壶腹癌的CT直接征象，应用螺旋CT薄层增强扫描和图像后处理技术相结合对壶腹癌的诊断和鉴别诊断是可靠而有效的方法，并对其手术治疗提供重要的指导功能。

The direct CT signs of carcinoma of vaters ampulla is finding mass in the region of Vaters ampullaand it is a reliable and effective method to diagnosis and the distinction diagnosis of ampullary carcinoma with the combination of the spiral CT scanning of thin-slice and image post-processing technologyand it offers important guidance role to its operation treatment.

壶腹部肿块是乏特氏壶腹癌的CT直接征象，应用螺旋CT薄层增强扫描与图像后处理技术相结合对壶腹癌的诊断和鉴别诊断是可靠而有效的方法并对其手术治疗提供重要的指导作用。

Methods摘要:SCT findings of 26 cases of Vaters ampullary carcinoma proved surgically and pathologically were analyzed retrospectively in taking water to make the contrast fulling intestine and the focus were scaned by the thin-slice enhancement partially,in which 17 examples were auxiliary by image post-processing technology.

方法摘要：回顾性分析了26例经手术病理证实的乏特氏壶腹癌的螺旋CT表现，均服开水做对比剂充盈肠管，病变局部采用薄层增强扫描，17例辅以图像后处理技术。

Methods:SCT findings of 26 cases of Vaters ampullary carcinoma proved surgically and pathologically were analyzed retrospectively in taking water to make the contrast fulling intestine and the focus were scaned by the thin-slice enhancement partially,in which 17 examples were auxiliary by image post-processing technology.

回顾性分析了26例经手术病理证实的乏特氏壶腹癌的螺旋CT表现，均服开水做对比剂充盈肠管，病变局部采用薄层增强扫描，17例辅以图像后处理技术。

Rather, they are represented by the mean level which yields the anatomic detail for each slice of brain.

相反，它们所代表的平均水平，其中产量解剖，详细为每个切片的大脑。

Objective To evaluate the sensitivity and specificity for diagnosis of 16 slice CT subtraction angiograph in finding cranial or neck vascular diseases, and to assess the value of its clinical application.

目的 评价减影CTA对检察颅颈部血管性病变的灵敏度和特异度及其临床应用价值。

Methods The vertebral arteries of twelve cases underwent 16-slice spiral CT angiograph.

多层螺旋CT的面世和临床应用，在一定程度上弥补了此种不足[1-4]。

Methods forty patients with head/neck 16 slice CT angiograph were divided into two groups at random,each group has 20 cases, the plain scan and the CTP was performed before CTA to all 40 cases. Group A use CTP to obtain the peak time of contrasted artery as CTA delay time, and scan from head side to foot side. Group B use contrast media automatic bolus tracking to obtain delay time,scan from foot side to head side.two groups CTA images were collated.

使用16排螺旋CT对40例患者行头颈部CTA检查，随机分为两组，各20例，所有患者在CTA之前行脑CT平扫及脑CT灌注扫描，A组以CTP所显示的动脉峰值时间作为CTA的延迟时间，扫描方向为自头侧向足侧。B组使用造影剂浓度实时监控跟踪触发技术确定延迟时间，扫描方向自足侧向头侧扫描，两组CTA图像相对照。

The contrast material was bolus injected through antecubital vein ,while four layers of dynamic scans were performed for 50 seconds.These slice dynamic images were processed with the CT perfusion software package.Cerebral blood flow,cerebral blood volume,and mean transit time were measured within the specific regions of interest of the brain,and quantitative analysis was performed.

在常规轴面CT扫描后选取基底节及其相邻层面，经肘静脉团注对比剂，同时开始连续50 s的四层动态扫描，重建的198幅动态图像使用CT脑灌注软件包进行处理，获得灌注图像，测量所选脑内感兴趣区的血流量、血容量及平均通过时间，并对其进行定量分析。

A strange and mysterious deep sea creature.

一种奇异、神秘的深海生物。

It's a yellow rectangle .

这是黄色的长方形。