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neck movement (d orng)commonly known as narrow veins (ji ton)the reason is (d orng)porridge is hardened, that is, (d orng)walls form patches ，when (dāng)when these patches increase or break (sh the)，will (hu the)causes veins (d orng)narrow or embolism ，use the far (yuǎn)decreased end perfusion pressure ，direct (dǎo)cause hypoperfusion infarction.

neck movement (d orng)the best thing about narrow veins (fā)the part is the head (n andi)move (d orng)the beginning of the pulp 。research shows ，neck movement (d orng)the narrow side of the veins (c and)the disease of a brain infarction (fā)high morbidity rate (d to)90%-95%，at the same time (sh the)the head (n andi)move (d orng)the narrow vein is (j then)important factors of procedural stroke 。

neck movement (d orng)the slim pill itself has no (m andi)have typical clinical manifestations (xi ton)，often difficult to develop (fā)now (xi ton)，some patients may show (xi ton)because of brain ischemia (jīng)system (tǒng)the sucked sucking ，in early clinical manifestations (xi ton)there is a sudden occurrence (fā)made of numbness 、feel (ju and)retreat or feel (ju and)anomaly 、upper or lower limbs (wú)force 、facial paralysis and sudden eye development (fā)black etc. ，if (fā)born in words (yǔ)the words are in the side (c and)brain hemisphere ，can cause words (yǔ)words hindrance 。this kind of germ appears (xi ton)only the number (shù)minute ，can be (shù)hours (sh the)，but in 24 hours (sh the)inside (n andi)completely disappearing ，this is what people often say (shuō)the "little middle" (fēng)”，or (chēng)for one (gu or)ischemics of the sex (TIA)。serious (y ton)those with severe cases will appear (xi ton)the symptoms of a brain infarction can cause death or retention (y ton)heavy nerve (jīng)functional dysfunction ，such as partiality, loss of words (yǔ)、hemobia, feeling (ju and)obstacles, etc. 。reversal (fù)caval bone infarction removal of bias and absent (yǔ)outside ，can also be found (fā)vascular dysfunction 。

neck movement (d orng)are we? n andi)shuttle w heart to head (yùn)the important blood vessels in the blood, if the veins are swayed (d orng)appearance (xi ton)ask (w andn)question our brain will (hu the)appear (xi ton)ischemia 。neck movement (d orng)the narrowness of the cervix is ​​mostly due to the blood vessels (n andi)caused by the stain ，this disease is often found in middle-aged and elderly people (fā)life often develops (fā)born in a horn (n andi)move (d orng)用 and horns (d orng)the starting segment of the fork 。some narrow stds may (hu the)send (fā)diseases that appear completely closed 。

have a sensible veins (d orng)narrow trunk:

?

(1)brain ischemia: there may be ear thorns 、dazzle 、black slaughter 、blurry of the object 、dizzy 、headache 、insomnia 、memory reduction 、lethargy 、how many (m andng)wait for the state of sausage. eye ischemia symptoms (xi ton)for vision loss 、hemiopia, rehabilitation (fù)visual etc. 。

(2)TIA：TIA local neural (jīng)once function (gu or)sexual loss, clinical manifestations (xi ton)for one side (c and)feelings (ju and)or (yùn)move (d orng)short-term dysfunction ，once (gu or)single eye blindness or loss (yǔ)wait ，generally only persists (xù)number (shù)minute ，send (fā)24 after illness h inside (n andi)completely restored (fù)。imaging (xu and)check (wú)focal venereal disease 。

(3)ischemic brain stroke: common (ji ton)there is a side of the clinical medicine (c and)feelings (ju and)obstacles 、negative 、lost words (yǔ)、brain nerve (jīng)breaking ，serious (y ton)the serious one appears (xi ton)unconscious, etc. ，and have corresponding (yīng)the nerve (jīng)system (tǒng)signs and imaging (xu and)feature 。

without (wú)medicated veins (d orng)narrow trunk:

many horny movements (d orng)patients with narrow cervical dysfunction (wú)any nerve (jīng)system (tǒng)the status and signs of 。sometimes (sh the)only during the inspection of the body (sh the)send (fā)now (xi ton)neck movement (d orng)fighting (d orng)weak or disappear ，root or vein (d orng)acting (jīng)vascular and vascular noise 。without (wú)medicated veins (d orng)neuroscillation, especially severe narrowing or plaque abscesses are recognized (r andn)for "high-risk disease change" ，going forward (l toi)the more you get the attention 。right (du the)pay special attention to the following situations:

1、men over 60 years old ，have a good (zhǎng)history of smoke in the period 、obesity, hypertension 、the dangers of various cardiac and brain diseases such as diabetes and hyperlipidemia (xiǎn)factors.

2、physical inspection (sh the)send (fā)now (xi ton)neck movement (d orng)vascular veins 。

3、pass through (gu or)without (wú)entrepreneur (chu tong)sex assisted check--like color B super check ，end (ji and)the comprehensive analysis can make diagnosis.

neck movement (d orng)patients with narrow cervical tract often appear (xi ton)performance of (xi ton)short brain ischemia ，the shape is the head, the single side (c and)face 、numbness of the body 、suddenly feeling unsuccessful (wú)force ，words (yǔ)difficulty 、the moment (fā)black (often once (gu or)sexual single eye dark )，and appear (xi ton)once (gu or)sexual consciousness (sh the)lost, etc. 。these symptoms usually appear (fā)when you are born (sh the)short and short ，often, many (shù)minutes or number (shù)hours (sh the)，can be found in one day (n andi)recover (fù)normal and unsuccessful (wú)afterwards. however, this situation will (hu the)reversal (fù)send (fā)do ，more time (sh the)waiting for a day (shù)second-rate ，a few (shù)week 、number (shù)months, number (shù)yearly (fā)make once 。right (du the)yu xunshuofa (fā)the body of the body (wú)force and vision disorders 、single side (c and)incomplete bias and feeling (ju and)patients with unclear causes of disorders ，should (yīng)suspected of having veins (d orng)narrow 。

neck movement (d orng)about 9% of patients with cervical narrowness account for about 9% of the population over the age of 60 ，send (fā)higher morbidity 。most of the reason? y ton)yoke i move (d orng)the porridge is caused by the slightest slightest slightest slightest slightest slightest (dāng)when these patches break or enlarge (sh the)，will (hu the)appear (xi ton)neck movement (d orng)narrow or embolism 。

neck movement (d orng)commonly known as narrow (ji ton)there are several causes of

(1)move (d orng)porridge hardening: common (ji ton),often more (fā),engagement of the horn (d orng)fork 、the head and sea sermon (n andi)the head (n andi)move (d orng)可 、base movement (d orng)pulmonary and brain center (d orng)可 (MCA)wait 。in the head (d orng)diseases of bifurcation are common at the same time (sh the)engagement of the horn (d orng)可 (CCA)the distance (yuǎn)heart and neck (n andi)move (d orng)the proximal end of the cervix, the disease mainly follows (d orng)back wall swelling (ku or)show, prompts local brain blood flow to vasculature (n andi)caused by membrane 。

(2)neck movement (d orng)pulse muscle growth (fā)dystrophy: a non-inflammatory vascular disease to cause cervical dysfunction (d orng)pulmonary and kidney (d orng)the narrow vein is characterized by its characteristics. very good (fā)on 20 ～50aged white women 。often at the same time (sh the)involve both sides (c and)neck movement (d orng)可 、vertebral (d orng)but the horns are total (d orng)bifurcation is often not affected (extraordinary (d orng)porridge hardening )。20%～40%patient companion (n andi)move (d orng)tumor 。

(3)neck movement (d orng)positive (n andi)membrane cleavage: external injury and self-development (fā)two kinds 。external injuries are caused by rotation (zhuǎn)violence makes the leap (gu or)stretch, leash (d orng)the vein hits the second vertebrae 。self-developed (fā)those who always accompany (d orng)porridge sclerosis and scaling muscle development (fā)educating abnormalities 。this disease has the following typical manifestations on angiography (xi ton):the head overview (d orng)bifurcation of the vein (yuǎn)end-head horn movement (d orng)birds (niǎo)the mouth is narrow or blocked and can be extended (d to)at the bottom, sometimes (sh the)companionship (d orng)tumor.

【pathology】

very good (fā)the location is the head (d orng)bifurcation ，next is the top (d orng)starting section, and there is also a head (n andi)move (d orng)siphon 、brain center (d orng)pulmonary and brain forward (d orng)organic parts 。generally agreed (r andn)for ，neck movement (d orng)the spots are mainly through (gu or)the following two paths cause brain ischemia: one path is harsh (y ton)heavy narrow neck movement (d orng)causing blood flow (d orng)psychology (xu and)changes ，direct (dǎo)to my brain (yīng)low perfusion at the site; another pathway is the microembol or microthrombus on the surface of the spot, causing brain embolism 。the above two machines (jī)which one is more important (yōu)告 (sh the)，current views (diǎn)not consistent yet ，but most (shù)recognize (r andn)the narrowness of the spotted bulb 、spot shape (t toi)learn (xu and)the characteristics are closely related to the symptoms of brain ischemia (guān)，the two work together to inspire (fā)neuros (jīng)the difference between the narrowness and the difference (guān)it can be more closely connected 。

generally (l toi)say (shuō)，need to pass (gu or)medical (yī)only by checking the life 。when (dāng)of course ，not saying (shuō)have a head (d orng)a little narrow-minded person (diǎn)performance (xi ton)not even (m andi)have 。first ，can be based on (jù)some of my chronic medical history ，come (l toi)absolutely (yù)可 (c and)do you have any problems (fā)born (d orng)the danger of narrow veins (xiǎn)。send (fā)born (d orng)the main reason for narrowing the cervix is ​​hypertension 、high blood lipids, high blood sugar 。in addition, high altitude also causes (d orng)causes of plaques that cause luminal narrowing and thrombosis; and coronary heart disease or disease (fā)born (gu or)patients with myocardial infarction should be particularly (dāng)heart ，because? y ton)yue where X vascular diseases are often the same (sh the)exist.

neck movement (d orng)high-risk groups with narrow veins include TIA and ischemic stroke patients with lower limb movement (d orng)patients with sclerosis and sluggish puncture ，coronary heart disease (especially when you need to do a crown (d orng)break a bridge or intervene in treatment )patients and physical examination (fā)now (xi ton)neck movement (d orng)vascular vein silencer 。

1、doppler - ultrasound check:

doppler - ultrasound examination is to detect doppler blood flow (c and)determined B super real (sh the)hour (sh the)imaging organic (jī)earth (ji and)together (l toi)，for the current (wú)entrepreneur (chu tong)sexual veins (d orng)inspect inspection methods, with ease (jiǎn)hope 、safety and cost (f andi)low-cost features (diǎn)。it not only displays the header (d orng)anatomical image of the veins ，in (j then)spotted shape (t toi)learn (xu and)check ，if (qū)sub-spot (n andi)bleeding and plaque ablation, and also displays (d orng)blood flow 、flow rate 、blood flow direction and movement (d orng)positive (n andi)thrombus 。clinic cervical movement (d orng)the narrowness of the veins (zhǔn)the accuracy is above 95% ，doppler-ultrasound inspection has been widely accepted (yīng)for horn movement (d orng)filtering and visiting the disease of cervical narrowness 。

the shortcomings of ultrasound inspection include: ①cannot check (n andi)the head (n andi)move (d orng)disease of uterine disease 。②check the (ji and)if you are susceptible to operator technology (shù)the impact of level 。

2、magnetic resonance angiography:

magnetic resonance angiography (magnetic resonance angiography，MRA)it's a kind of (wú)entrepreneur (chu tong)sexual angioimaging technology (shù)，can clearly display the head movement (d orng)three-dimensional shape of veins and their branches (t toi)helian (ji and)structure (g oru)，and it can rebuild (n andi)move (d orng)image. the veins have straight-line shaped contours ，it's especially suitable for MRA checked parts 。MRA can be (zhǔn)show thrombosis correctly, some (wú)folding layer (d orng)tumors and leukorrhea (n andi)move (d orng)the situation of slight ，right (du the)censoring and determining the plan are very helpful 。

MRA highlight the shortcomings (diǎn)it is slow blood flow or recurrence (fù)difficult blood flow often (hu the)cause the signal (h too)missing ，exaggerate narrowness 。there are also certain limitations in the display of hardened patches. right (du the)physical (n andi)metal retention (such as metal bracket 、pacemaker or metal prosthesis, etc. )patients M(f andi)RA taboos 。

3、CT angiography:

CT angiography (CT angiography，CTA)it's in the spiral CT basic (chǔ)upload (fā)show up (l toi)a non-inciduous angiography technique (shù)。the method is (jīng)vascular injection (du the)comparison ，when (dāng)repeat (hu ton)blood or target blood vessels (n andi)right (du the)comparator concentration (d to)arrive during peak period (j then)scan the flow ，then process it and get the (shù)three-dimensional image of characters 。outer section movement (d orng)suitable CTA check ，the main reason is the head office (d orng)the direction perpendicular to CT close the face ，avoid spiraling CT scan (sh the)right (du the)the vascular resolution of horizontal direction is relatively (du the)disadvantages (diǎn)。

CTA the best (yōu)point (diǎn)can directly display calcified plaques 。currently, surface vein reconstruction is generally performed by surface veins. (surface shaded display，SSD)，large density projection method (maximum intensity projection MIP)。MIP reconstruct the image to obtain (l andi)angiography-like image ，it can also show calcification and wall thrombosis, but the three-dimensional space is closed (guān)the display is not enough SDD。but SDD density differences cannot be directly displayed.

warm reminder:move (d orng)sclerosis of porridge is a systemic disease ，age over sixty years old 、long (zhǎng)suction of smoke 、obesity 、factors of cardiovascular and brain diseases such as hypertension, diabetes and hyperlipidemia ，all suitable for use (d orng)the vein caused by hardening of porridge (d orng)climbing narrow filter.