MRI Tomograph download brochure (PDF)

MRI scanner generating a magnetic field of about 0.5 Tesla (20 MHz for protons) in a cylindrical volume 40 mm in diameter and 40 mm long. Our highly efficient shimming strategy allows us to reach a homogeneity better than 0.5 ppm in the full volume. The scanner is equipped with a solenoidal rf coil optimized to provide a uniform B1 field in the working volume and with a 3D set of actively shielded gradient coils.

The image of the water phantom shown in the figure was acquired with a spatial resolution of 0.2 mm in the plane and a slice 2 mm thick. It was acquired with a Hahn echo sequence averaging 16 scans. The SNR in the image is 100.

The high homogeneity of the magnetic field allows one to use the magnet for high resolution spectroscopy and chemical shift imaging. The line of a water sample 36 mm in diameter is shown in the figure. The linewidth measured at FWHM in a full sample is 9 Hz (0.5 ppm). The homogeneity improves by reducing the sample, for example, a resolution of about 2Hz is measured for samples contained in 10 mm tubes. Such a high resolution is enough to resolve the J-coupling structure in ethanol, as it is shon in the figure at the bottom.

The  easy access of the wide bore and the high sensitivity of the magnet makes the Desktop MRI system an ideal device for imaging of small animals. The figure shows images of a mouse taken with a 3D spin echo sequence. (TR/TE=250 ms / 20 ms; NS 4; 256x64x64 pixel; 390 µm isotropic resolution).

Technical specifications