横断面

A crossover study design was used: the bion was on for the first 3 months, off for the fourth month, and on again during long-term follow-up.

采用横断面研究：生物体装置在前3个月开启，第4个月关闭，在长期随访中再次开启。

Multilevel bivariate models is effective in analyzing the correlativty of bivariate data,and ordinary lea...

双变量多水平模型是分析双变量横断面资料相关性的有力工具，克服了用简单直线相关处理这类资料的局限性。

Results 3 cases of lesions were in the gap of"V"shape between iliac muscle and musculus psoas major on the coronal sections in the lower right abdomen closely adjacent to the cecum,which were narrowed. The lesions showed long even T1 and T2 signals similar to mucous wall particularly in T2WI image. The walls of cyst were thin and even. The cysts were round or oval in shape on transections.The cyst were cucurbits in shape in 2 cases and long cannular in a case on coronal sections and arrowy sections and borderlines of the cysts were clear. The terminal of the cysts showed taper in 2 cases. In addition, cecum polypus was found at the placket of the appendix in a case which was not shown on MRI image.

结果 3例病变均位于右下腹，冠状面位于髂肌和腰大肌形成的&V&形间隙内，与盲肠关系密切，盲肠呈外压改变；呈均匀长T1、长 T2信号；壁薄且均匀，信号与肠管壁相似，于T2WI显示较明显；于横断面分别呈圆形、类圆形及椭圆形，冠状面及矢状面2例显示呈&葫芦&状、1例呈长管状，3例末端均呈&桃尖&样变；边界均清楚。1例于阑尾开口部发生盲肠息肉，MRI未能显示。

Results:(1) Spin-echo sequence included axial, coronal and sagittal images. In T1-weighted images,the medulla oblongata is isointense,the cistern is hypointense; in T2-weighted images,the medulla oblongata is isointense, CSF shows hyperintense, and the arteries of posterior fossa appear hypointense flow voids. The cisternal cranial nerves are not clearly demonstrated in the routine spin-echo images. In 3D-time of flight images, the brain tissue shows isointense, CSF is hypointense, the artery shows hyperintense,and the cranial nerves show linear isointense.

2，结果：(1)常规SE序列横断面、冠状面及矢状面T1WI显示延髓等脑组织呈等信号，延髓周围池脑脊液呈黑色低信号，T2WI显示脑组织为等信号、脑脊液为白色高信号，脑底动脉在池内高信号背景下由于&流空效应&而表现为低信号，常规序列由于成像参数关系而不能直接显示脑池内颅神经；三维时间飞跃(3D-TOF)成像序列显示脑组织为等信号，脑脊液为低信号，而脑池内脑底动脉则呈高信号、脑池内后组颅神经为线状等信号。

Fruit linear-oblong, flattened laterally, commissural surface narrow, glabrous; ribs 5, obtuse, sometimes inconspicuous; mericarps subterete in cross section; vittae 1 in each furrow, 2 on commissure.

果线状长圆形，侧面扁平，合生面狭窄，无毛；棱5，钝，有时不明显；分果爿在横断面里近圆柱状的；油管每棱槽1，在合生面上2。

Methods Chondrocytes were obtained from the costicartilage of rat and were cultured on the porous HA blocks, 3 mm×3 mm×4 mm size, for three and seven days. Scanning electron micrograph was taken to show whether the cells grew outside and inside the pore of HA block. The cells cultured on tiny glass sheet for 2 days were used to prove where the cells come from by in situ hybridization technique with α1cDNA probe.

采取成年雄性SD大鼠肋软骨细胞，以3 mm×3 mm×4 mm大小的块状多孔HA为载体培养软骨细胞；培养3天和7天后通过扫描电镜观察HA表面和中矢横断面孔隙中有无细胞生长，同时将培养2天的细胞爬片以α1cDNA片段为探针进行原位杂交，求证培养的细胞是否软骨细胞。

Objective To study the value of MR axial T2WI in revealing tears of the anterior cruciate ligament.

目的 探讨MR横断面T2WI对前交叉韧带损伤的诊断价值。

Methods:MRI findings of pancreatic carcinoma in 109 cases were analyzed retrospectively. All the cases were confirmed by operation, pathology and clinical practice. Conventional pancreatic sequences ( FLASH 2d T1WI, FLASH 3d T1WI, Declivate transection FS-T1WI, TSE-T2WI), MR cholangiopancreatography and dynamic contrast of Gd-DTPA sequences were used to find pancreatic lumps, adjacent infiltrated blood vessels and small pancreatic carcinoma.

经手术病理和临床证实的胰腺癌109例，经常规胰腺扫描序列（FLASH 2d和3d T1WI、倾斜横断面FS-T1WI、TSE-T2WI）、MRCP、Gd-DTPA动态增强扫描对胰腺癌、胰胆管扩张、周围血管侵犯及小胰腺癌诊断价值。

Conventional pancreatic sequences ( FLASH 2d T1WI, FLASH 3d T1WI, Declivate transection FS-T1WI, TSE-T2WI), MR cholangiopancreatography and dynamic contrast of Gd-DTPA sequences were used to find pancreatic lumps, adjacent infiltrated blood vessels and small pancreatic carcinoma.

经手术病理和临床证实的胰腺癌109例，经常规胰腺扫描序列（FLASH 2d和3d T1WI、倾斜横断面FS-T1WI、TSE-T2WI）、MRCP、Gd-DTPA动态增强扫描对胰腺癌、胰胆管扩张、周围血管侵犯及小胰腺癌诊断价值。

A total of 4 794 students from 15 secondary schools of Nanshan District were surveyed with questionnaires for demographical information and AIDS related knowledge, approaches of knowledge acquired and health requirement.

方法使用自制问卷对深圳市南山区15所中学4794名学生进行横断面调查，问卷内容包括一般情况、艾滋病相关知识及知识获得途径、健康需求等。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。