Related Experiment Video
Updated: Jun 25, 2026
Phase-Resolved Functional Lung MRI for Pulmonary Ventilation and Perfusion (V/Q) Assessment
Published on: August 9, 2024
Phase-contrast magnetic resonance quantification of normal pulmonary venous return
Hyun Woo Goo1, Abdulmajeed Al-Otay, Lars Grosse-Wortmann
1Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.
Purpose:
To assess the feasibility of phase-contrast magnetic resonance (PCMR) in quantifying the pulmonary venous return in normal subjects.
Materials And Methods:
PCMR was performed in 12 healthy adult volunteers (mean age 38 years, range 27-60 years; 9 men; body surface area 1.81+/-0.15 m2) for the ascending and descending aorta, caval veins, main and branch pulmonary arteries, and pulmonary veins. Two readers independently quantified blood flow in all subjects.
Results:
Intraobserver differences were -2.0% (95% confidence interval [CI]: -9.9% to 5.9%), -4.5% (95% CI: -15.6% to 6.5%), and -0.7% (95% CI: -4.5% to 3.0%) for all vessels, pulmonary veins, and other great vessels, respectively. Interobserver differences were -2.0% (95% CI: -10.6% to 6.6%), -3.1% (95% CI: -16.0% to 9.9%), and -1.4% (95% CI: -6.4% to 3.5%) for all vessels, pulmonary veins, and other great vessels, respectively. Pulmonary venous flow volume showed high correlations with the volumes of the pulmonary arterial flow, systemic arterial flow, and systemic venous flow (r=0.76-0.92, P<0.005).
Conclusion:
Flow quantification of normal pulmonary venous return using PCMR is feasible with high reproducibility and accuracy.
Related Concept Videos
01:04Venous Return
What is Venous Return?
Venous return refers to the rate at which blood flows back to the heart from the body's peripheral veins. It's an integral part of the circulatory system as it...
01:30Radiological Investigation II: MRI and Ventilation Perfusion Scan
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...