CAJ | 학술논문

目的：探讨磁共振扰相梯度双回波序列（dual-echo sequence）同时获得动脉成像及静脉成像的能力。方法选取11例健康志愿者行双回波序列、3D-TOF-MRA及SWI序列检查。将双回波序列所获得的动脉成像对大脑前、中、后动脉各段显示效果与3D-TOF-MRA成像效果比较；同时所获得的静脉成像对脑深部静脉的显示效果与SWI成像效果比较。结果双回波与3D-TOF MRA序列对双侧大脑前动脉A1～A4段、大脑中动脉M1～M2段、大脑后动脉P1～P3段显示效果无明显差异（P＞0.05）。两成像方法对双侧大脑前动脉A5段、大脑中动脉M3段、M4段、M5段及大脑后动脉P4段显示效果具有明显统计学差异（P＜0.05），3D-TOF MRA序列对以上动脉段的显示效果优于双回波序列。双回波序列与SWI序列对大脑大静脉、双侧大脑内静脉、双侧透明隔静脉、双侧丘纹上静脉的显示效果无明显差异（P＞0.05）。而两成像序列对双侧脉络膜静脉的显示效果具有明显统计学差异（P＜0.01），SWI序列对其显示效果优于双回波序列。结论双回波序列适合于检出多数大脑内动、静脉，但对小的动脉远端检查以常规3D-TOF-MRA为好；双回波序列亦适合检出多数脑深部静脉，但对于微小静脉的检出以常规SWI更好。
목적：탐토자공진우상제도쌍회파서렬（dual-echo sequence）동시획득동맥성상급정맥성상적능력。방법선취11례건강지원자행쌍회파서렬、3D-TOF-MRA급SWI서렬검사。장쌍회파서렬소획득적동맥성상대대뇌전、중、후동맥각단현시효과여3D-TOF-MRA성상효과비교；동시소획득적정맥성상대뇌심부정맥적현시효과여SWI성상효과비교。결과쌍회파여3D-TOF MRA서렬대쌍측대뇌전동맥A1～A4단、대뇌중동맥M1～M2단、대뇌후동맥P1～P3단현시효과무명현차이（P＞0.05）。량성상방법대쌍측대뇌전동맥A5단、대뇌중동맥M3단、M4단、M5단급대뇌후동맥P4단현시효과구유명현통계학차이（P＜0.05），3D-TOF MRA서렬대이상동맥단적현시효과우우쌍회파서렬。쌍회파서렬여SWI서렬대대뇌대정맥、쌍측대뇌내정맥、쌍측투명격정맥、쌍측구문상정맥적현시효과무명현차이（P＞0.05）。이량성상서렬대쌍측맥락막정맥적현시효과구유명현통계학차이（P＜0.01），SWI서렬대기현시효과우우쌍회파서렬。결론쌍회파서렬괄합우검출다수대뇌내동、정맥，단대소적동맥원단검사이상규3D-TOF-MRA위호；쌍회파서렬역괄합검출다수뇌심부정맥，단대우미소정맥적검출이상규SWI경호。
Objective To compare the FLASH T2 dual-echo MRI sequence with 3D TOF MRA and susceptibility-weighted imaging(SWI)for evaluation of the cerebral circulation.Methods Eleven healthy volunteers underwent FLASH T2 dual-echo sequence,3D-TOF-MRA and SWI.The visibility of the cerebral arteries and deep cerebral veins was compared.Results Most of the cerebral arteries and deep cerebral veins were equally well seen on the dual-echo sequence in comparison with the 3D TOF MRA and SWI,respectively (P>0.05).The 3D-TOF-MRA was significantly better than the dual-echo sequence for demonstrating the A5 segment of the anterior cerebral artery,M3-M5 segments of the middle cerebral artery and P4 segment of the posterior cerebral artery(P<0.05).The SWI was significantly better than the dual-echo sequence for demonstrating the venae chorioidea(P<0.05). Conclusions FLASH T2 dual-echo can depict most cerebral arteries and deep cerebral veins. Visualization of A5,M3-M5,P4 segments of the anterior,middle and posterior cerebral arteries is better on 3D-TOF-MRA and the venae chorioidea on SWI.