The Research Of Middle Cerebral Arteries Of Normal Adult By MRA

Objective:The emerging MRA technology, anatomical structure of middle cerebral artery of the whole, and the parameters are detailed statistical analysis, so as to better understand the anatomy of the middle cerebral artery, and provide anatomic data and solid theoretical basis for treatment and research related clinical diseases.Methods:From 2009 January to 2013 January were selected, the MRA images were enrolled from No.l Hospital of Jilin University patient do brain artery, selection criteria are:① in 15 to 25 years;② no cerebral venous lesions, and affects the brain venous reflux disease; ③ severe heart disease without affecting normal brain blood supply, large vascular diseases;④ have been excluded from the cerebral vascular malformations, stenosis and aneurysm;⑤No artery disease obvious, such as hypertension, coronary heart disease, diabetes, including; were all without MR examination contraindication. Brain scan on the subjects with Discovery TM MR7503.0T magnetic resonance machine of GE company, the images need to AW Volume Share 4 AW4.5 workstation, after image processing, then observed the image. Trunk length and diameter of M1 segment artery in the brain; branches of M1 segment, type and proportion of M4 segment of middle cerebral artery, and the M4 segments of the branching position ratio; M4 segment of middle cerebral artery branches every branch number, proportion and shape statistics.Results:1. The length of the trunk of middle cerebral artery were left:(13.38±3.64) mm; Right: (10.94±2.82) mm. The trunk diameter respectively left:(3.26±0.38)mm; Right:(3.18±0.70) mm.Ml segment of middle cerebral artery branching number is about 10 per side. Its diameter of branch is about 1.2mm.2. The middle cerebral artery runs roughly divided into three, respectively is a go-it-alone, double dry type and dry type. The go-it-alone 13 cases, accounting for 32.5%; Double dry (19 cases), accounting for 47.5%; 8 cases of dry type, accounting for 20%.The double branch type, on the advantage of the larger proportion, followed by the next branch dominant type, the type of equal.3. Middle cerebral artery M2, and M3 branch arteries, will send out a certain number of M2 approximately 10 wear branch artery, M3 period of about 9 arteries wear one.4. Cortical branches location scale:the orbitofrontal artery above give priority to dry, accounted for 80%, issue for the time in the trunk, accounted for 20%; And about 81% of the central artery above dry out before, the second from the trunk, accounted for 19%; Most central artery from the dry, accounting for 70%, the rest from the trunk, accounted for 18%, a few dry out, accounting for 12%; After the central artery, most beginning in the dry, accounted for 47%, the second starting point in the dry, accounted for 26%, the starting point of the trunk (18%), a starting point in the dry, accounted for 9%; After crown arteries, most from dry, accounted for 35%, secondly from dry, accounted for 24%, made by the trunk (19%), made by dry under 22%; Angular gyrus artery, a few made by the dry,14%,20%, from the dry trunk (18%), issued by the most since the dry, accounted for 48%; The temporal artery, a few from the trunk,18%, most made by the dry, accounted for 82%; Temporal artery before the main issue in the minority,19%, dry under a majority,81%; Middle temporal artery, a starting point in the trunk,18%, most of the starting point in the dry,82%; After the temporal artery, a few from the trunk,18%, most made by the dry, accounted for 82%.5. Each branch pipe diameter, orbitofrontal artery, left (1.35±0.35) mm, right (1.24± 0.30) mm; The central artery, left (1.39±0.31) mm, right (1.39±0.28) mm; The central artery, left (1.35±034) mm, right (1.41±0.32) mm; After the central artery, left (1.21± 0.23) mm, right (1.16±0.91) mm; Top after artery, left (1.30±0.26) mm, right (1.24± 0.22) mm; Angular gyrus artery, left (1.36±0.26) mm, right (1.28±0.27) mm; The temporal artery, the left (1.01±0.19) mm, right (1.00±0.22) mm; The temporal artery, left (1.06±0.11) mm, right (1.02±0.21) mm; Middle temporal artery, left (1.07±0.18) mm, right (1.13±0.29) mm; The temporal artery, left (1.21±0.26) mm, right (1.17±0.22) mm.Conclusion:1. MRA can well display running distribution of the middle cerebral artery and its branches.2. The M2 segment and M3 segment of MCA out of shape variation is more, and it dominated the larger proportion, should be carefully free resolution in operation, avoid blindly violent pull, avoid injury.3. In the brain cortical branch artery, coarse central anterior artery, central artery, the central artery and inferior parietal artery were coarse, distribution is fixed, can be used as the feeding artery anastomosis of artery.