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Related Experiment Video

Updated: Jun 4, 2026

Construction and Application of Cerebral Functional Region-Based Cerebral Blood Flow Atlas Using Magnetic Resonance Imaging-Arterial Spin Labeling

Construction and Application of Cerebral Functional Region-Based Cerebral Blood Flow Atlas Using Magnetic Resonance Imaging-Arterial Spin Labeling

Published on: May 31, 2024

MR angiography and arterial spin labelling.

David Thomas¹, Jack Wells

¹Department of Medical Physics and Bioengineering, University College London, London, UK. thomas@medphys.ucl.ac.uk

Methods in Molecular Biology (Clifton, N.J.)

|February 1, 2011

Summary

Magnetic Resonance Imaging (MRI) enables non-invasive visualization and measurement of blood flow. Techniques like MR angiography (MRA) and arterial spin labelling (ASL) quantify blood velocity and tissue perfusion without contrast agents.

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Construction and Application of Cerebral Functional Region-Based Cerebral Blood Flow Atlas Using Magnetic Resonance Imaging-Arterial Spin Labeling

Construction and Application of Cerebral Functional Region-Based Cerebral Blood Flow Atlas Using Magnetic Resonance Imaging-Arterial Spin Labeling

Published on: May 31, 2024

Magnetic Resonance Imaging Quantification of Pulmonary Perfusion using Calibrated Arterial Spin Labeling

Magnetic Resonance Imaging Quantification of Pulmonary Perfusion using Calibrated Arterial Spin Labeling

Published on: May 30, 2011

Area of Science:

Medical Imaging
Cardiovascular Physiology
Radiology

Background:

Magnetic Resonance Imaging (MRI) is a powerful, non-invasive tool for visualizing and quantifying physiological processes.
Accurate assessment of blood flow is crucial for diagnosing and monitoring various medical conditions.
Traditional methods for blood flow assessment may be invasive or lack quantitative precision.

Purpose of the Study:

To describe the technical basis and practical implementation of non-invasive MRI techniques for blood flow assessment.
To highlight the quantitative and non-contrast-requiring nature of MR angiography (MRA) and arterial spin labelling (ASL).
To emphasize the utility of these methods in evaluating arterial vasculature and tissue perfusion.

Main Methods:

MR angiography (MRA) for imaging arterial vessels and measuring blood velocities.
Arterial spin labelling (ASL) for quantifying blood perfusion into tissues at the capillary level.
Focus on the technical principles and practical application of these MRI sequences.

Main Results:

MRI techniques, specifically MRA and ASL, provide non-invasive visualization of blood vessels.
These methods allow for quantitative measurement of blood flow parameters, including velocity and perfusion.
The non-invasive nature eliminates the need for contrast agents, enhancing patient safety and accessibility.

Conclusions:

MRA and ASL are valuable, non-invasive MRI techniques for comprehensive blood flow assessment.
These methods offer quantitative insights into arterial hemodynamics and tissue nutrient supply.
The absence of contrast agents makes these techniques particularly advantageous for widespread clinical application.