解剖学报
解剖學報
해부학보
ACTA ANATOMICA SINICA
2014年
3期
364-368
,共5页
脊髓%磁共振成像%扩散张量成像%儿童
脊髓%磁共振成像%擴散張量成像%兒童
척수%자공진성상%확산장량성상%인동
Spinal Cord%Magnetic resonance imaging%Diffusion tensor imaging%Child
目的:应用扩散张量成像技术研究儿童颈髓发育规律。方法使用单次激发自旋回波平面回波序列对90例健康儿童行颈髓扩散张量成像。在颈髓节段分别测量其表观扩散系数值( ADC )、各向异性分数值(FA)、纤维束平均长度(Ltract)以及纤维束体积(Vtract)。结果各组的ADC值、FA值、Ltract及Vtract分别如下:0.9747±0.2777、0.8493±0.2236、0.8210±0.1432、0.9198±0.1444、0.9048±0.1676;0.4117±0.0391、0.4712±0.0199、0.4944±0.0439、0.5608±0.0443、0.6169±0.0551;25.61±8.63、24.66±7.14、27.03±7.23、34.93±10.99、37.63±10.22;3.07±1.49、3.00±1.52、3.81±1.33、5.41±2.35、6.64±2.84。各年龄组的FA值、Ltract和Vtract不完全相同(P<0.001),而ADC值各年龄组的均值差异无统计学意义(F=1.758, P=0.145)。在组间的两两比较中:1、2组间FA值差异具有统计学意义;3、4组间FA值、Ltract和Vtract差异均具有统计学意义;4、5组间FA值差异具有统计学意义。 FA值、Ltract和Vtract与年龄呈正相关。结论儿童颈髓发育具有阶段性,且具有阶段性特征;磁共振扩散张量技术可用于观测儿童颈髓并评价其发育。
目的:應用擴散張量成像技術研究兒童頸髓髮育規律。方法使用單次激髮自鏇迴波平麵迴波序列對90例健康兒童行頸髓擴散張量成像。在頸髓節段分彆測量其錶觀擴散繫數值( ADC )、各嚮異性分數值(FA)、纖維束平均長度(Ltract)以及纖維束體積(Vtract)。結果各組的ADC值、FA值、Ltract及Vtract分彆如下:0.9747±0.2777、0.8493±0.2236、0.8210±0.1432、0.9198±0.1444、0.9048±0.1676;0.4117±0.0391、0.4712±0.0199、0.4944±0.0439、0.5608±0.0443、0.6169±0.0551;25.61±8.63、24.66±7.14、27.03±7.23、34.93±10.99、37.63±10.22;3.07±1.49、3.00±1.52、3.81±1.33、5.41±2.35、6.64±2.84。各年齡組的FA值、Ltract和Vtract不完全相同(P<0.001),而ADC值各年齡組的均值差異無統計學意義(F=1.758, P=0.145)。在組間的兩兩比較中:1、2組間FA值差異具有統計學意義;3、4組間FA值、Ltract和Vtract差異均具有統計學意義;4、5組間FA值差異具有統計學意義。 FA值、Ltract和Vtract與年齡呈正相關。結論兒童頸髓髮育具有階段性,且具有階段性特徵;磁共振擴散張量技術可用于觀測兒童頸髓併評價其髮育。
목적:응용확산장량성상기술연구인동경수발육규률。방법사용단차격발자선회파평면회파서렬대90례건강인동행경수확산장량성상。재경수절단분별측량기표관확산계수치( ADC )、각향이성분수치(FA)、섬유속평균장도(Ltract)이급섬유속체적(Vtract)。결과각조적ADC치、FA치、Ltract급Vtract분별여하:0.9747±0.2777、0.8493±0.2236、0.8210±0.1432、0.9198±0.1444、0.9048±0.1676;0.4117±0.0391、0.4712±0.0199、0.4944±0.0439、0.5608±0.0443、0.6169±0.0551;25.61±8.63、24.66±7.14、27.03±7.23、34.93±10.99、37.63±10.22;3.07±1.49、3.00±1.52、3.81±1.33、5.41±2.35、6.64±2.84。각년령조적FA치、Ltract화Vtract불완전상동(P<0.001),이ADC치각년령조적균치차이무통계학의의(F=1.758, P=0.145)。재조간적량량비교중:1、2조간FA치차이구유통계학의의;3、4조간FA치、Ltract화Vtract차이균구유통계학의의;4、5조간FA치차이구유통계학의의。 FA치、Ltract화Vtract여년령정정상관。결론인동경수발육구유계단성,차구유계단성특정;자공진확산장량기술가용우관측인동경수병평개기발육。
Objective To investigate the development of the cervical cord in children by using diffusion tensor imaging.Methods Ninety healthy children were undergone with diffusion tensor imaging of the cervical cord by using single-shot spin-echo echo planar image sequence.The values of apparent diffusion coefficients (ADC), fractional anisotropy (FA), average length(Ltract) and volume of tracts(Vtract) were measured in the cervical regions.Results The measurements of each group were as follow:ADC value:0.9747 ±0.2777,0.8493 ±0.2236,0.8210 ±0.1432,0.9198 ± 0.1444,0.9048 ±0.1676;FA value:0.4117 ±0.0391,0.4712 ±0.0199,0.4944 ±0.0439,0.5608 ±0.0443,0.6169 ± 0.0551;Ltract:25.61 ±8.63,24.66 ±7.14,27.03 ±7.23,34.93 ±10.99,37.63 ±10.22;Vtract:3.07 ±1.49,3.00 ± 1.52,3.81 ±1.33,5.41 ±2.35,6.64 ±2.84.FA value, Ltract and Vtract showed significance in different age groups , while ADC value was found no difference ( P<0.001) .Post-Hoc test revealed that FA value was significantly different between age group I and Ⅱ.FA value, Ltractand Vtract presented significantly different between group ⅢandⅣ.FA value difference was also found between group Ⅳand V.FA value, Ltract and Vtract were all positively corelative with age (F=1.758, P=0.145 ) .Conclusion Development of the cervical cord shows periodicity with periodic features .Diffusion Tensor Imaging can be used as a tool to observe and evaluate development of the cervical cord in children .