Results:The metaphysis and the periphery of the secondary center of ossification were red marrow. They showed marked enhancement on T 1WI. Enhancement ratio declined in both regions with age.
结果：干骺端骨髓和骨骺二次骨化中心周边骨髓为含有丰富血管的红骨髓，增强后呈显著强化，且干骺端增强率较骨骺骨髓更高，但随年龄增长，两者的增强率均逐渐减低。
Phalange recognition mainly rely on ossification center, so the location of ossification center is key to phalange recognition.
指骨识别主要依靠骨化中心，因而骨化中心的定位成为指骨识别的关键。
The graph of phalange projection has obvious fluctuations but has much noise which will influence the results of ossification center location, so it is very important to reduce noise of projection.
投影图波动明显，但噪声比较大，影响骨化中心定位结果，因此去除投影噪声非常重要。
It was concluded that the cartilage canals of fetus play great roles in formation of secondary ossification center and exist in primary secondary ossification center.
说明胎儿股骨远端次级骨化中心初始时其内存在软骨管，软骨管对次级骨化中心的形成起作用。
To observe the correlativity between secondary ossification center and cartilage canals in cartilage epiphysis and the initial morphosis of the secondary ossification center.
为观察软骨骺内次级骨化中心与软骨管的关系，及次级骨化中心初始形态结构。
Objective To observe the occurring time of the primary ossification center of the fetus' cranium viscerale.
目的观察胎儿面颅骨初级骨化中心出现的时间顺序。
There were no similar structure of ossification center in proximal femur in fetus age of 30 and 35 weeks.
胎龄30,35周的股骨近端均未发现组织学上的骨化中心。
At the distal part of femur in fetus age of 30 weeks, a cluster of lump-like osteogenic cell, osteoblast and basophlous osteoid filled among cells appeared at the secondary ossification center.
胎龄30周的股骨远端，骨化中心呈现团块状成群的骨原细胞和成骨细胞，嗜碱性的类骨质填充于细胞间；
The surface of ossification center of femoral head was accidented and inequable in thickness as compared with opposite side.
股骨头骨骺核与对侧对比表面凹凸不平，厚度不均，部分较对侧对比明显变小。
The surface of ossification center of femoral head was accidented and inequable in thickness as compared with opposite side.
股骨头骨骺核与对侧对比表面凹凸不平，厚度不均，部分较对侧对比明显变小。
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