Prof. Ing. Karel BARTUSEK, DrSc.
- Research Scientist, Group Leader, Scientific Board Member
- Group of Gradient Magnetic Fields in NMR Experiments
- Laboratory of NMR Methods
- NMR Division
- Generation of time-variable gradient pulses for NMR spectroscopy, tomography, and microscopy (since 1981).
The problems to solve include:
- Spectrometer pulse control.
- Gradient sources.
- Measurement of pulsed magnetic fields.
- Development of the MULTIFID method and the NMR method of the instantaneous frequency with the selective excitation for the gradient magnetic field measurement.
- Control circuits for decoupling in spectroscopy and for amplitude and phase modulation of RF pulses for tomography have been designed.
- Experimental work for tomography. Using 80 MHz and 200 MHz spectrometers I tested the following methods:
- Utilization of selective RF excitation pulses.
- Spin echo and its symmetrical transformation.
- Excitation of phase modulated RF pulses by pseudo-random noise.
- Application of gradient fields.
- Dynamic behaviour of pulsed magnetic fields.
- NMR tomography (microscopy) including localization techniques.
- Water suppression methods in the proton NMR spectroscopy.
- 31P and 1H decoupling with adiabatic pulses.