月行差

Often see children the same age, tall and fat to eat, I feel very complex line: I am envious of them, at the same time very worried for their own children, my child 1 week another 8 months, and now may be only 80 cm bar, weight only 21 kg, and now does not speak very good, my child is not a bad development?

常常看到同龄的孩子吃得又高又胖，我的心情就很行复杂：很羡慕他们，同时很为自己的孩子担心，我的孩子1周又8个月了，现在可能只有80公分左右吧，体重也只有21斤，现在说话方面也不是很好，我的孩子是不是发育的很差？

Methods: The motion of parasternal papillary muscle anterior wall, inferior wall, posterior wall, and lateral wall were detected by 2DE at short axis view of left ventricle before PTCA, 3 d and 1-3 months after PTCA in 33 cases of patients with coronary heart disease, who received PTCA+stent at selected time. Peak systolic velocity of subendocardial, subepicardial and middle layer myocardium, transmural velocity difference of the same segments and Outer lateral mitral valve annulus were also detected at apical 4 chamber view by pulsed wave tissue Doppler imaging.

对33例择期行PTCA+支架术的冠心病患者用HP5500型超声诊断仪，于PTCA术前及术后3d、1-3个月对胸骨旁左心室乳头肌短轴切面的前间壁、下壁、后壁、侧壁行二维超声心动图(2DE)检测各节段的室壁运动情况，用脉冲组织多普勒成像检测上述各节段的内、外膜下及中层心肌的收缩期峰值速度，内外膜下心肌的收缩速度差及心尖四腔观二尖瓣外侧环的收缩期峰值速度。

Total laminectomy or half laminectomy would be selected or the nerve root canal was decompressed and hypertrophied ligmentum flavum was removed along with the herriated disc was extirpated if necessary.results all cases were followed from 5 months to 77 months,with an average of 32 months.according to the nakai scale,the results were excellent in 254 cases,good in 41,fair in 5 and poor in none.including 3 cases who had been operated by microendoscopic tubular retractor,and another one had a history of chemonucleolysis.conclusion radiography is very important for suitable selection of surgical indication as well as the operation treatmeat of lumbar disc herniation and lumbar canal stenosis.

结果 术后随访5～77个月，平均32个月，按nakai标准评定疗效：优254例，良41例，可5例（其中在外地做过椎间盘镜术3例，木瓜酶溶核术后1例，而后到本院行此手术），差0例。结论影像学检查为腰椎管狭窄症，黄韧带肥厚的患者，体征与狭窄的定位，在腰椎间盘突出症和腰椎管狭窄症手术方式和适应证的选择上起重要作用。

Methods 42 cases mature neonate with MSCT scanning in lung were collected and randomly divided into three groups averagely. The tube current was 50 mAs and 30 mAs for low dose scanning and 200 mAs for routine dose. The CT value of region of interesting and standard deviation were measured in the aorta that region of carina of trachea. And compared the noise, image quality, CT dose index and dose length product between two low-dose scannings and routine dose.

42例足月新生儿随机等分成3组分别行低剂量30mAs、50mAs及常规剂量200m AsMSCT胸部扫描，统一于气管分叉处测量并记录主动脉CT值及标准差，比较两低剂量扫描与常规剂量扫描的噪声、图像质量、CT剂量指数和剂量长度乘积等差别。

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。