Mesenteric Artery Stenosis Ultrasound (last updated 08/08/2018)
(last reviewed 08/08/2018)
(last reviewed 08/08/2018)
Patients must be fasting for this exam.
Peak systolic velocities in the sagittal/longitudinal plane:
- Aorta
- Celiac artery
- Proximal SMA
- Mid SMA
- Distal SMA
Color Doppler images in the sagittal/longitudinal plane:
- Aorta
- Celiac artery
- Proximal SMA
- Mid SMA
- Distal SMA
- IMA (if visualized)
Scanning sequence:
Gray scale image aorta sagittal
Color and Pulse Doppler image aorta sagittal
Color image celiac artery sagittal
Pulse Doppler image celiac artery sagittal
Color image prox SMA sagittal
Pulse Doppler image prox SMA sagittal
Color image mid SMA sagittal
Pulse Doppler image mid SMA sagittal
Color image dist SMA sagittal
Pulse Doppler image dist SMA sagittal
Color image IMA sagittal (if visualized)
Pulse Doppler image IMA sagittal (if visualized)
Notes:
Celiac artery fasting peak systolic velocity >200 cm/sec predictive of 70 to 99% diameter reduction
SMA fasting peak systolic >275 cm/sec predictive of 70 to 99% diameter reduction
With stenosis, should see tardus-parvus waveform with spectral broadening and post stenotic turbulence
CTA or MRA should be used to confirm