MRI angiography of the carotid artery

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5563307

Ruszkowski, J T

The goal of this work was to design a method of MRI to allow visualization of blood vessels and flow. This thesis describes the development of a unique technique of MRI angiography which was used to study the normal carotid arteries near the carotid bifurcation. A flow phantom developed to simulate pulsatile arterial blood flow and normal volunteers were studied using a whole body MR scanner operating at 0.3 Tesla. The elements of this technique include the following: A spin echo multislice pulse sequence with echo time equal to 28 msec was used to acquire imaging data as a 256 {times} 256 matrix which was spatially decoded using two dimensional Fourier transformation to yield two-dimensional images. A high sensitivity radio frequency surface coil was designed to acquire high resolution images of small deep-lying structures without increased acquisition times. Images were acquired in oblique planes through the vessels. Gating instrumentation was used to synchronize image data acquisition to a specific phase of the flow or cardiac cycle to take advantage of velocity-dependent phase shift changes to the signal.

• Research Organization: State Univ. of New York, Brooklyn, NY (USA). Dept. of Anatomy
• OSTI ID: 5563307
• Country of Publication: United States
• Language: English

Related Subjects

550600* -- Medicine
62 RADIOLOGY AND NUCLEAR MEDICINE
ARTERIES
BLOOD FLOW
BLOOD VESSELS
BODY
CARDIOVASCULAR SYSTEM
CAROTID ARTERIES
DIAGNOSTIC TECHNIQUES
FOURIER TRANSFORMATION
INTEGRAL TRANSFORMATIONS
MOCKUP
NMR IMAGING
ORGANS
PHANTOMS
SPIN ECHO
STRUCTURAL MODELS
TRANSFORMATIONS