Measurement of flow using a complex difference method of magnetic resonance imaging

NMR image data is acquired with velocity encoding gradients applied and both a phase difference image array and a complex difference image array are produced. A flow image is produced from the complex difference image array after it is corrected for spin saturation effects and calibrated using infor...

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Bibliographische Detailangaben
Hauptverfasser:	MISTRETTA, CHARLES A, POLZIN, JASON A, ALLEY, MARC T
Format:	Patent
Sprache:	eng
Schlagworte:	DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL MEDICAL OR VETERINARY SCIENCE METERING BY VOLUME PHYSICS SURGERY TESTING
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Beschreibung
Zusammenfassung:	NMR image data is acquired with velocity encoding gradients applied and both a phase difference image array and a complex difference image array are produced. A flow image is produced from the complex difference image array after it is corrected for spin saturation effects and calibrated using information derived from the phase difference image array. Total blood flow through vessels can be measured from the flow image.