Breath-hold monitor for MR imaging
US5363844A · kind A · utility
45Cited by
4References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 13, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Aug 13, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an NMR system a respiration monitor provides a visual feedback to the patient which enables the patient to perform a series of breath-holds with the patient's diaphragm positioned at the same reference point. This enables NMR data to be acquired over a series of breath-holds without introducing blurring or image artifacts. Between breath-holds a navigator pulse sequence is used to gather NMR data from which diaphragm position is measured, and during each breath-hold the pulse sequence is changed to gather NMR image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.