Point sensitive NMR imaging system using a magnetic field configuration with a spatial minimum
A point-sensitive NMR imaging system in which a main solenoid coil produces a relatively strong and substantially uniform magnetic field and a pair of perturbing coils powered by current in the same direction superimposes a pair of relatively weak perturbing fields on the main field to produce a resultant point of minimum field strength at a desired location in a direction along the Z-axis. Two other pairs of perturbing coils superimpose relatively weak field gradients on the main field in directions along the X- and Y-axes to locate the minimum field point at a desired location in a plane normal to the Z-axes. An rf generator irradiates a tissue specimen in the field with radio frequency energy so that desired nuclei in a small volume at the point of minimum field strength will resonate.
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- ERA-09-014919; EDB-84-045538
- Application Number:
- ON: DE84005919
- OSTI ID:
- 5274349
- Country of Publication:
- United States
- Language:
- English
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