Fall 2012 Magazine

The Data Age

The Art of Engineering


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3D visualization of blood flowThis image shows the result of 3D visualization of blood flow in the large intracranial vessels in the human head in a patient with an arterioventricular malformation (AVM). The visualization, from the lab of Michael Markl, associate professor of radiology and biomedical engineering, is based on in vivo blood flow velocities, which were measured using 4D flow magnetic resonance imaging, a novel diagnostic imaging technique permitting the acquisition of blood flow with full volumetric coverage of 3D vessel structures inside the human body. The traces represent the 3D path the blood is taking during one cardiac cycle; color coding reflects the local blood velocity. The AVM results in an unusual shortcut between the arterial and venous vessels, resulting in enhanced complexity of the vascular network in the right hemisphere compared with the normal left side.