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1·Objective To discuss clinical characteristics of gallbladder agenesis (GBA).

目的探讨胆囊缺如(GBA)的临床特征。

2·Objective To investigate the diagnostic methods for agenesis of gallbladder.

目的探讨先天性胆囊缺如的诊断方法。

3·Objective To evaluate the value of MRI in the diagnosis of callosal agenesis.

目的探讨MRI对胼胝体发育不全的诊断价值。

4·Subcortical heterotopia in 7, 4 cases with callosal agenesis were accompanied.

皮质下型7例，4例合并胼胝体发育不全。

5·The MRI manifestation of agenesis of the corpus callosum in 6 cases was analysed.

对6例胼胝体发育不全的MRI表现进行了分析。

6·Conclusions PAX9 and MSX1 gene mutation can cause different phenotypes of tooth agenesis.

结论PAX9或MSX1基因突变导致的先天性缺牙表型有明显差异。

7·Methods The data of 19 patients with congenital pulmonary agenesis or hypogenesis with CT were analyzed.

方法CT平扫19例明确诊断的先天性肺不发育和发育不全的患者，观察和分析CT资料。

8·Objective: To explore the imaging features of sacral agenesis in children and the role of ct and MRI in diagnosing this disease.

目的探讨小儿骶骨发育不全的CT和MRI表现，以及CT和MRI对本病的诊断价值。

9·MRU may be the most precise diagnostic method in localization that can clearly show ectopic opening of ureter with agenesis or ectopic kidney.

MRU能精确清晰地显示开口异位的输尿管和肾脏，是最精确的定位检查方法。

10·Another diagnosis to consider is a closed spinal dysraphism, where the vertebral arches are not fused well, but there is no vertebral column agenesis.

另一种鉴别诊断是闭合性的脊髓椎管闭合不全，同样椎弓没有融合，但没有脊椎发育不良。

发育不全

1·Objective: To explore the imaging features of sacral agenesis in children and the role of ct and MRI in diagnosing this disease.

目的探讨小儿骶骨发育不全的CT和MRI表现，以及CT和MRI对本病的诊断价值。

2·Objective To evaluate the value of MRI in the diagnosis of callosal agenesis.

目的探讨MRI对胼胝体发育不全的诊断价值。