On-line holographic reconstruction of NMR images by means of a liquid crystal spatial light modulator

Author

Ito, Satoshi ; Sato, Osamu ; Yamada, Yoshifumi ; Kamimura, Yoshitsugu

Author_Institution

Dept. of Inf. Sci., Utsunomiya Univ., Japan

Volume

3

fYear

1996

fDate

16-19 Sep 1996

Firstpage

531

Abstract

A method of holographic reconstruction of nuclear magnetic resonance (NMR) images by making a hologram directly from the NMR signal is described. Since the signal obtained in NMR Fresnel transform technique is given by an equation similar to that of the Fresnel diffraction equation in light, it is possible to reconstruct NMR images by recording the NMR signal as a hologram and using a coherent optical system. We propose a new image reconstruction technique using a liquid crystal spatial light modulator for displaying holograms in a coherent optical system, which would realize a real-time reconstruction of NMR images. In the experiment, it is shown that good images were obtained by electrically displayed hologram

Keywords

Fresnel diffraction; biomedical NMR; computer-generated holography; image reconstruction; light coherence; liquid crystal devices; medical image processing; spatial light modulators; Fresnel diffraction equation; NMR Fresnel transform technique; NMR images; NMR signal; coherent optical system; electrically displayed hologram; experiment; liquid crystal spatial light modulator; nuclear magnetic resonanc; online holographic reconstruction; real-time image reconstruction; Equations; Holographic optical components; Holography; Image reconstruction; Liquid crystal displays; Nuclear magnetic resonance; Optical diffraction; Optical modulation; Optical recording; Transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1996. Proceedings., International Conference on

Conference_Location

Lausanne

Print_ISBN

0-7803-3259-8

Type

conf

DOI

10.1109/ICIP.1996.560549

Filename

560549