图4-36　经前臂中份的横断层MR T1加权图像

1　指浅屈肌 flexor digitorum superficialis　2　尺侧腕屈肌 flexor carpi ulnaris
3　指深屈肌 flexor digitorum profundus　4　尺骨 ulna
5　拇长展肌 abductor pollicis longus　6　指伸肌 extensor digitorum
7　骨间缘 interosseous border　8　桡骨 radius
9　拇长屈肌 abductor pollicis longus
10　桡侧腕屈肌 flexor carpi radialis

图4-37　经前臂下份的横断层MR T2WI FS

1　尺侧腕屈肌腱 tendon of flexor carpi ulnaris　2　尺神经 ulnar nerve
3　旋前方肌 pronator quadratus
4　尺侧腕伸肌腱 tendon of extensor carpi ulnaris
5　小指伸肌腱 tendon of extensor digiti minimi
6　指伸肌腱 tendon of extensor digitorum
7　示指伸肌 extensor indicis　8　拇长伸肌 extensor pollicis longus
9　桡侧腕短伸腱 tendon of extensor carpi radialis brevis
10　桡侧腕长伸肌 extensor carpi radialis longus
11　拇短伸肌 extensor pollicis brevis
12　拇长展肌 abductor pollicis longus　13　桡动脉 radial artery
14　拇长屈肌腱 tendon of flexor pouicis longus
15　桡侧腕屈肌 flexor carpi radialis　16　正中神经 median nerve
17　指深屈肌 flexor digitorum profundus
18　指浅屈肌 flexor digitorum superficialis

图4-38　经远侧尺桡关节的横断层MR T2WI FS

1　尺侧腕屈肌 flexor carpi ulnaris
2　指浅屈肌 flexor digitorum superficialis
3　尺神经 ulnar nerve　4　小鱼际 hypothenar
5　尺骨 ulna　6　尺侧腕伸肌 extensor carpi ulnaris
7　远侧尺桡关节 distal radioulnar joint　8　小指伸肌 extensor digiti minimi
9　指伸肌 extensor digitorum
10　桡侧腕短伸肌 extensor carpi radialis brevis
11　桡侧腕长伸肌 extensor carpi radialis longus
12　桡骨 radius　13　拇长伸肌 extensor pollicis longus
14　拇短伸肌 extensor pollicis brevis
15　拇长展肌 abductor pollicis longus
16　桡动脉 radial artery
17　拇长屈肌 flexor pouicis longus　18　桡侧腕屈肌 flexor carpi radialis
19　正中神经 median nerve
20　指深屈肌 flexor digitorum profundus