Shih W J, Wienrzbinski B, Ryo U Y
Nuclear Medicine Service, Lexington Veterans Medical Center, Kentucky 40511, USA.
Clin Nucl Med. 2000 Jul;25(7):539-40. doi: 10.1097/00003072-200007000-00010.
The "glove" phenomenon is caused by arterial injection of a bone-imaging agent into the antecubital fossa. The authors describe a patient who incidentally received an arterial injection of bone-imaging agent into the right distal radial artery near the wrist, which resulted in a "hot" palm and thumb. The phenomenon of hot palm and thumb can be explained by normal anatomic-physiologic blood flow after radial artery injection. The radial artery contributes the blood supply to the thumb through the dorsal metacarpal arteries of the first metacarpals, and the dorsal carpal branch of the radial artery, a branch of the interosseous artery, and dorsal carpal branch of the ulnar artery form the dorsal carpal rete. The normal vascular anatomic-physiologic dynamic constituted the mixture and dilution effects after the distal radial artery injection that resulted in hot areas limited to the palm and thumb of the hand on bone scintigraphy.
“手套”现象是由于在肘前窝动脉内注射骨显像剂所致。作者描述了一名患者，其在腕部附近的右桡动脉远端意外接受了骨显像剂的动脉内注射，导致手掌和拇指出现“热区”。手掌和拇指热区现象可通过桡动脉注射后正常的解剖生理血流来解释。桡动脉通过第一掌骨的掌背动脉为拇指供血，桡动脉的腕背支、骨间动脉的分支以及尺动脉的腕背支形成腕背网。正常的血管解剖生理动态构成了桡动脉远端注射后导致骨闪烁显像时手部热区仅限于手掌和拇指的混合和稀释效应。
