Reception signal processing apparatus in nuclear magnetic resonance diagnostic apparatus
US4740750A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Feb 10, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5608
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Reception signal processing apparatus in nuclear magnetic resonance diagnostic apparatus to display as an image the distribution of the spin density or relaxation time of specific atomic nuclei existing in an object utilizing nuclear magnetic resonance phenomena including a phase demodulator for phase demodulating a nuclear magnetic resonance signal evoked by nuclear magnetic resonance phenomena in accordance with two reference waves, the phases of which are different by 90.degree., an analog-to-digital convertor for digitalizing the separated two signals obtained by the phase demodulator, and a noise correction processor for eliminating the low frequency component noises included in the demodulated signals from the phase demodulator to obtain an image without artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.