There is divergence: ectasia may be defined from 1.5 cm in women or 1.7 cm in men; many services treat ≥2.0 cm as small aneurysm and ≥3.5 cm as a strong repair threshold.多两情相悦正常: <1,5 cm扩张/发散: 1,5–1,9 cm髂动脉瘤: ≥2,0–2,5 cm讨论修复: ≥3,5 cm来源: ACC/AHA 2022 / ESVS 2024 / JVS isolated common iliac aneurysm
主髂动脉狭窄——速度比
≥ 2,0
Ratio between jet velocity and normal proximal segment; use angle below 60 degrees and correlate with aliasing, narrowing and distal waveform.无血流动力学狭窄: <1,5轻度/技术区: 1,5–1,99狭窄≥50%: ≥2,0严重: >4,0来源: ACR-AIUM-SRU arterial Doppler / Society for Vascular Medicine / vascular lab criteria
髂/腔静脉阻塞——速度比
> 2,5
有用但不是绝对的标准:结合股骨共同相位、侧支循环、外在压迫、血栓、支架和症状的丧失。可能正常: <2,0 + onda fásica可疑/边缘: 2,0–2,5 ou onda pouco fásica重大阻碍: >2,5 ou colaterais/no flow来源: JVS Venous 2016 / ESVS 2022 / Labropoulos
主动脉腔内支架后——动脉瘤囊
稳定或萎缩
Sac growth, endoleak, migration, kinking, limb thrombosis or absent iliac limb flow are warning signs.稳定: 囊稳定/收缩,无内漏II 型内漏,无生长: 遵循本地协议并发症: type I/III, growth ≥5 mm, thrombosis/occlusion来源: SVU aortoiliac duplex / ACC-AHA 2022 / SVS
The assistant classifies ultrasound risk and documentation quality; final management depends on symptoms, sex, growth, anatomy, operative risk and local vascular protocol.