Color doppler ultrasound diagnosis self internal arteriovenous fistula with fresh cephalic vein thrombosis in 1 case Fresh blood clots gray-scale ultrasonographic don't show" this kind of situation in the portal, lower limb artery, carotid artery blood vessels such as ultrasonic inspection is also so, beginners easily Misdiagnosis and missed, it shall be reported

彩色多普勒超声诊断自体动静脉内瘘头静脉新鲜血栓1例 “新鲜血栓灰阶声像图不显示”这种情况在门脉、下肢动脉、颈动脉等血管超声检查中也是如此的，初学者容易 误漏诊，故予以报道。