Physics in Medicine and Biology · 1980 · 801 citations · 3 references
Natural SciencesBiomedical EngineeringRadiologyBiomedical ImagingDiagnostic ImagingDiagnostic RadiologyMagnetic Resonance ImagingMagnetic Resonance Imaging PhysicsMagnetic Resonance Pulse SequencesMedical ImagingMedical Imaging InstrumentationMedical Imaging PhysicsMagnetic Field InhomogeneityMagnetic ImagingMagnetic Resonance Imaging AcquisitionMagnetic Resonance Imaging InstrumentationNuclear Magnetic Resonance SpectroscopyPulse Sequence DesignStatic Magnetic Field
The authors introduce “spin warp imaging,” a novel NMR technique for whole‑body imaging. The system employs a four‑coil, air‑cored 0.04 T magnet producing a 1.7 MHz proton frequency, a pulse sequence tailored for whole‑body imaging, and achieves a field inhomogeneity of 6×10⁻⁴ at 0.23 m. They demonstrate the technique’s application to human whole‑body imaging.
Describes a new nuclear magnetic resonance (NMR) imaging technique which the authors call 'spin warp imaging' and gives examples of its application to human whole-body imaging. The apparatus is based on a four-coil, air cored magnet (made by the Oxford Instrument Company) capable of accepting the whole human body. The magnet produces a static field of 0.04 T giving a proton NMR frequency of 1.7 MHz. The maximum field inhomogeneity is about 6*10-4 at a radius of 0.23 m, approximately twice the amount theoretically attainable with this configuration. The pulse sequence used is shown.
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Tumor Detection by Nuclear Magnetic Resonance
R Damadian · Science · 1971 · 1.4K citations
Anil Kumar · Journal of Magnetic Resonance (1969) · 1975 · 303 citations