Paul Callaghan gives an introduction to NMR and MRI. Paul uses a mechanical wheel to illustrate the key concepts of precession, relaxation, and resonance. First in a 10 episode series produced by Magritek Ltd.

Paul Callaghan gives an introduction to NMR and MRI. This is the 2nd video of the series. In this episode, we start talking about NMR. 10 episode series produced by Magritek Ltd.

This video provides an overview of how the Terranova-MRIinstrument works. This instrument is used in the video series to demonstrate the key principles. It uses the Earth’s magnetic field as the primary static field.

Paul demonstrates the steps of acquiring a simple Free Induction Decay (FID) signal on a sample of water, and its representation as a spectrum in the frequency domain.

Magnetic field homogeneity is important in NMR and MRI. In this video, Paul reviews the effects on the NMR signal of field inhomogeneity on both the Free Induction Decay and the spectrum, and how shimming can be used to improve field homogeneity and provide a narrow linewidth.

Paul delves into the spin echo, illustrating what is happening to the spins in this process and how the echo is created. The discussion then extends to the full CPMG pulse sequence and how this leads us to the important irreversible relaxation term, T2

Paul looks in depth at T1 (‘spin-lattice’) relaxation, and T2 (‘spin-spin’) relaxation, and measure these for a sample of water.

Paul now moves to Magnetic Resonance Imaging (MRI) and carries out a very simple but informative 1D imaging experiment using a phantom sample containing two tubes of water.

Paul introduces the viewer to the critical concept of k-space, clearly showing how spatial information in the physical sample is encoded using a field gradient and how this is represented in k-space. This video is given in a short lecture format.

Paul extends the discussion of k-space to two and three dimensions. The key concepts of traversing a two dimensional k-space are clearly presented, showing the pulse sequences used to move about in k-space and acquire the proper signal. The concepts presented in this video are the fundamental building blocks of any magnetic resonance imaging, including full body medical MRI. This video is given in a short lecture format.

Paul uses the Terranova-MRI to perform two dimensional imaging experiments to practically demonstrate the k-space and imaging concepts presented in video 9 part 2. Both Cartesian imaging and Filtered Back Projection methods are shown.

This video shows how easy it is to use the Magritek Spinsolve NMR spectrometer. We measure three different samples and illustrate how loading and unloading the standard 5mm tubes is very straightforward, no spinning required. The software is simple and clean and intuitive to use, making starting a scan very fast. The system itself has terrific sensitivity and resolution providing beautiful spectra in just ten seconds.

This video shows the superb sensitivity of the Magritek Spinsolve NMR spectrometer. We perform measurements on Ibuprofen samples at 2 M, 200 mM, 20 mM and 2 mM and show that even at 2 mM, corresponding to just 0.2mg of sample in 0.5 mL of solvent, we get terrific results in just over one minute.

In a high use environment such as a student teaching lab it is important that the students are able to make their measurements quickly and easily, and to get consistently excellent spectra. In this video we show how easy and fast it is to run many room temperature samples sequentially on the Spinsolve Benchtop NMR Spectrometer while maintaining superb spectra.

Switching between nuclei is very easy in the Spinsolve spectrometer – just press a button in the software. In this video we show how simple and fast it is to switch between Proton and Fluorine measurements, illustrated with samples of Trifluoroethanol, and Bromofluorobenzene.

In this video Dr. Philip Sharpe talks about how he uses the Spinsolve Benchtop NMR spectrometer in the undergraduate teaching and research labs at The University of Queensland. One interesting feature of Philip’s setup is his mounting of the Spinsolve benchtop NMR spectrometer on a trolley with an uninterruptible power supply – enabling easy transport between student laboratories with immediate availability on arrival.

In this video you can see the launch of the Spinsolve 60 at the 2016 American Chemical Society Spring meeting in San Diego.