TABLE OF CONTENTS SATOSHI ITO [1] and YOSHIFUMI YAMADA
Department of Information and Control Systems Science
Graduate School of Engineering, Utsunomiya University
7- 1- 2 Yoto, Utsunomiya, 321 8585 Japan
Magnetic resonance diffractive imaging is proposed as a new approach to Magnetic Resonance (MR) angiography. The expression of the Nuclear Magnetic Resonance signal is similar to the equation for the Fresnel diffraction of a 3D object in light or sound waves. The proposed technique offers the possibility of fast angiographic imaging and the online reconstruction of 3D volumetric images using the holographic technique. Static imaging experiments using an ultra-low-field MRI system are performed to verify the feasibility of the technique. It is shown that the images focused on an arbitrary plane can be reconstructed from data scanned in two-dimensions, even though blurred image data is superimposed on the image. Moreover, the 3D image can be observed in a coherent optical imaging system. This study demonstrates the possibility of the proposed method as a fast imaging technique for MR angiography.
Keywords: Magnetic resonance (MR); holography; Fresnel transform.
Angiographic imaging is widely used for clinical diagnosis. However, the use of Magnetic Resonance (MR) angiography to collect three-dimensional data is a time consuming process. Decreasing the data acquisition time will therefore reduce the burden on patients and increase patient throughput.
In order to reduce the data acquisition time, a feasibility study on the use of magnetic resonance diffractive imaging, in which images containing depth information are derived from data...
