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Targeting the Rat's Small Bowel: Long-Term Infusion into the Superior Mesenteric Artery
Published on: April 8, 2021
Doppler ultrasonography criteria of superior mesenteric artery stenosis
Suzan Biri1, İsmail Biri2, Yucel Gultekin3
1Deparment of Radiology, Yüksek İhtisas University-Koru Ankara Hospital, Ankara, Turkey.
Purpose:
The techniques mostly used for the diagnosis of superior mesenteric artery (SMA) stenosis are computed tomography angiography (CTA), and magnetic resonance angiography. We aimed to evaluate color-coded Doppler Ultrasonography (CDUS) for the detection of SMA stenoses and to determine Doppler criteria.
Methods:
We identified retrospectively 65 patients with CTA images of SMA stenosis and examined them with CDUS for the Doppler measurement of SMA peak systolic flow velocity (PSV), end-diastolic velocity (EDV), and mesenterico-aortic ratio (MAR). Results were analyzed with receiver-operating characteristic curve analysis.
Results:
The optimal threshold values for determining 50%-69% SMA stenoses were PSV >280 cm/s, EDV >45 cm/s, and MAR >3.6. For identifying 70%-99% SMA stenoses, they were PSV >395 cm/s, EDV >74 cm/s, and MAR >3.6.
Conclusion:
CDUS is a convenient method with high accuracy for identifying SMA stenosis. PSV yielded better results than EDV and MAR.
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