Normal Aortic Diameter Size on Ultrasound, CT & MRI
Reference guide to normal aortic diameter measurements by segment on ultrasound, CT, and MRI, based on EAE clinical practice recommendations.
Vascular
21 entries
A
Normal Azygos Vein Arch Size on Radiography in Children
Reference values for normal azygos vein arch diameter on chest radiography in children aged 0–14 years, with clinical significance and measurement technique.
C
Normal Cerebral Artery Diameter on Angiography
Reference values for normal cerebral artery diameter on angiography, including anterior, middle, and posterior cerebral arteries in adults.
Normal Common Iliac Artery Diameter: Ultrasound, CT & MRI
Normal common iliac artery diameter ranges 7.9–12.1 mm on axial imaging; learn measurement technique and clinical thresholds across ultrasound, CT, and MRI.
F
Normal Femoral Artery Diameter on Ultrasound, CT & MRI
Reference values for normal femoral artery diameter on ultrasound, CT, and MRI: common femoral 6.6–9.6 mm, superficial femoral 4.3–7.2 mm.
Normal Femoral Artery Peak Systolic Velocity on Ultrasound
Normal femoral artery peak systolic velocity ranges 89–141 cm/s (common) and 77–108 cm/s (superficial) on duplex ultrasound.
I
Normal Inferior Vena Cava Diameter on Ultrasound and CT
The normal average inferior vena cava diameter is 20 mm on ultrasound and CT, a key threshold for filter sizing and hemodynamic assessment.
Normal Internal Carotid Artery Diameter on Angiography
Normal internal carotid artery diameter values by segment on angiography, from the cervical to clinoid segment, based on established reference data.
Normal Internal Carotid Artery Stenosis Grading on Ultrasound
Learn the Society of Radiologists in Ultrasound consensus criteria for grading internal carotid artery stenosis by Doppler ultrasound, including PSV, EDV, and ICA/CCA ratios.
L
Normal Left Gastric Vein Diameter: Ultrasound Reference
Normal left gastric vein diameter is less than 6 mm on color Doppler ultrasound; enlargement is a key marker of portal hypertension and variceal risk.
O
Normal Ovarian Vein Diameter on Ultrasound and CT
Normal ovarian vein diameter measures less than 7 mm on ultrasound and CT; values at or above this threshold may indicate pelvic venous insufficiency.
P
Normal Popliteal Artery Diameter on Ultrasound, CT & MRI
Normal popliteal artery diameter ranges from 4.1–5.6 mm on axial imaging; learn measurement technique and clinical thresholds across ultrasound, CT, and MRI.
Normal Popliteal Artery Peak Systolic Velocity on Ultrasound
Normal popliteal artery peak systolic velocity on duplex ultrasound ranges from 55–82 cm/s, a key benchmark for diagnosing peripheral arterial disease.
Normal Portal Vein Diameter on Ultrasound
Reference values for normal portal vein diameter on ultrasound across all age groups, from neonates to adults, with clinical significance.
Normal Portal Vein Velocity on Ultrasound
Normal portal vein velocity on Doppler ultrasound ranges from 20–30 cm/s, a key metric for detecting portal hypertension and hepatic vascular disease.
Normal Proximal Pulmonary Artery Diameter on CT and MRI
Normal proximal pulmonary artery diameter on CT and MRI: left 21 ± 3.5 mm, right 18.7 ± 2.8 mm, with key thresholds for pulmonary hypertension.
Normal Pulmonary Artery Trunk Size on CT and MRI
Reference values for normal pulmonary artery trunk diameter on CT and MRI, including sex-specific averages and the upper limit of 28.6 mm.
R
Normal Renal Artery Velocity Size on Ultrasound
Normal peak systolic renal artery velocity on Doppler ultrasound is less than 200 cm/s, a key threshold for detecting renal artery stenosis.
Normal Right Interlobar Pulmonary Artery Size on Radiography
Reference values for the normal right interlobar pulmonary artery diameter on chest radiography in children aged 1–14 years, by age group.
S
Normal Splenic Vein Diameter on Ultrasound and CT
Normal splenic vein diameter measures less than 10 mm on ultrasound and CT, with normal splenic vein length under 13 cm in adults.
U
Normal Umbilical Vein Diameter on Ultrasound and CT
Normal umbilical vein diameter is less than 3 mm on ultrasound and CT; values at or above this threshold suggest portal hypertension.
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