Firstly, the establishment of model requires sophisticated neurointerventional techniques and costly interventional materials(sacculus, minikin circlip ring, endovascular electrocoagulation), it not only consumed time but also increased the resesrch expense ; Secondly, although the Massoud model is the first successful model that contain the nidus, but it is far from mimicking the high-flow fistulae frequently observed in a brain AVM; Thirdly, the rapid spontaneous thrombosis result in fistula occlusion in a short time;Fouthly, the model's natural course and the long–term patency of fistula are unclear;Currently the model is only used for the short-term research.

但Massoud模型目前存在以下主要缺點(diǎn)：第一，模型的建立需要復(fù)雜的神經(jīng)介入技術(shù)和昂貴的介入材料(球囊91超碰人人网一区二区三区、微彈簧圈白白色在线观看、血管內(nèi)電凝等)，操作費(fèi)時(shí)久久79视频，又大大增加了研究費(fèi)用在线视频国产高清；第二，Massoud模型雖然首次具備了畸形血管團(tuán)免费黄片看裸，但它遠(yuǎn)不是我們臨床上常見的含有高流量動(dòng)靜脈瘺的腦AVM国产又大又硬又粗又黄；第三，頸動(dòng)靜脈吻合口自發(fā)性血栓形成進(jìn)而導(dǎo)致引流靜脈閉塞的機(jī)率很高在线鲁一鲁；第四一道本dvd无码二区直播，Massoud模型的長(zhǎng)期自然過程和動(dòng)靜脈吻合口的長(zhǎng)期通暢性尚不清楚，目前僅僅作為急性期模型黄色在线视频网站国产。

minikin：小東西

minify 變小 | minikin 小東西 | minim 半音符

minikin：嬌小的人

321. mimic: 模仿他人言行的人. | 322. minikin: 嬌小的人. | 323. minion: 奴才,低下之人.

minikin：纖小的

minikin 微小的物 | minikin 纖小的 | miniliformtorulose 念珠狀的

minikin：微小的物

minifier 縮小鏡 | minikin 微小的物 | minikin 纖小的