pcoa

Locations of intracranial aneurysms : 22 aneurysms were in PcoA , 15 in AcoA and9 in MCA .

其中：后交通动脉瘤22个，前交通动脉瘤15个，大脑中动脉瘤9个。

Objective To study the microsurgical anatomic feature of the posterior communicating artery ( PcoA ) .

目的学习后交通动脉的显微外科解剖特点。

Approximately 50 % of anatomic relations between PCoA and posterior cerebral artery ( PCA ) developed normally .

PCoA与大脑后动脉（PCA）的解剖关系中，约50%发育正常；

Objective : To observe PcoA through microscope and endoscope in different keyhole approach and to explore the applied value of Neuro-endoscope .

目的该研究的目的是经三种不同的锁孔入路观察后交通动脉，探讨神经内镜的应用价值。

Objective To investigate the feasibility of surgical clipping of contralateral posterior communicating artery ( PCOA ) aneurysms via unilateral approach exposure .

目的探讨一侧入路显露并夹闭对侧后交通动脉瘤的可行性。

A transient oculomotor nerve paralysis appeared in 2 cases with posterior circulation aneurysms and in 1 case with ICA PCoA aneurysm .

2例后循环动脉瘤及1例颈内后交通动脉瘤出现暂时性动眼神经麻痹。

Results There were three patterns of collateral circulation : Anterior communicating artery ( ACOA ), Posterior communicating artery ( PCOA ) and Ophthalmic artery ( OA ) .

结果存在3种侧支循环类型：前交通动脉（ACOA）型，后交通动脉（PCOA）型，眼动脉（OA）型。

With distal internal carotid artery occlusion , TCD showed OA in 15 % , ACoA in 51 % , and PCoA in 61 % of patients .

颈内动脉远段闭塞，经颅多普勒显示眼动脉侧支通路开放15%，前交通动脉侧支通路开放51%，后交通动脉侧支通路开放61%。

Based on the family composition and abundance , ground-dwelling beetles from the forest interior and those from the grassland were separated from each other by PCoA ordinations ;

主坐标分析（PCoA）排序表明，森林内部和周围草地间的地表甲虫群落组成差异较大；

Methods The coronary stents were implanted across the necks of 5 intracranial wide-necked aneurysms ( two at bifurcation of ICA , one at basilar artery and two recanalized PcoA aneurysms ) .

方法采用血管内支架结合GDC治疗5例颅内动脉瘤，其中颈内动脉分叉部动脉瘤2例，基底动脉宽颈瘤1例和后交通宽颈动脉瘤复发2例。

On MRA , the presence rate of ipsilateral posterior communicating artery ( PCoA ) in the study group was significantly higher than the controls ( P < 0.01 ), 28 ipsilateral PCoAs were larger ( 47.5 % ) .

疾病组中颈内动脉狭窄或闭塞同侧后交通动脉MRA出现率明显高于对照组（P<0.01）；

The rates of the functional patency of the AcoA for men and women were 87.6 % and 83.3 % , left PcoA 28.9 % and 34.1 % , right PcoA 34.4 % and 29.2 % , respectively .

前交通动脉功能开放率男女分别为87.6%、83.3%，后交通动脉左侧分别为28.9%、34.1%，右侧分别为34.4%、29.2%。

On MRA the rate in the study group was significantly higher than the control group ( P < 0 . 01 ), On DSA and MRA , the diameter of ipsilateral PCoA in the study group was larger than the control group ( P < 0 . 01 ) .

在MRA上明显高于对照组（P<0.01）；同侧后交通动脉的DSA和MRA测量值均较对照组增大（P<0.01）。

Shift of the BA was more likely found in aged individuals . Most of the PCA and SCA were close to the nerve , and a few of them compressed it , as for the PCoA , only the embryonic type was close to or compressed the nerve .

年龄越大BA发生偏移例数越多，多数PCA和SCA与动眼神经紧贴，少数使神经受压，PCoA仅胚胎型与神经紧贴或使之受压。