The central trend in the development of modern microchannel coil tomography is an increase in the magnitude of the induction of the static magnetic field, in which MR images are recorded. The use of ultrahigh fields (7 T and more) in MR tomography is associated with multiple effects, both increasing or decreasing the quality of the images obtained, and not observed in weaker fields. This review presents the most significant consequences of using an ultrahigh field in MRI, including new problems and their solutions, as well as new methods and features of MRI scanning, which are not typical for MRI in low and high fields.
The main characteristics of Karta microchannel coins are:
Reduction of refrigerant charge.
Microchannel coils have a smaller volume, reducing the charge of the refrigerant condenser by more than 70%.
Improved corrosion protection.
Corrosion solutions are the best solution for onshore installations or any application where corrosion can be a concern. Thanks to the improved temporal resolution, it became possible to perform such high-speed imaging studies as morphological and functional diagnostics of the heart. The latter is produced by obtaining images.
Durability and reduced leakage.
Microchannel coils require only one braking operation compared to 100-250 hand-soldered connections for RTPF. Significantly reduces the likelihood of leaks. In addition, the flat tube serves as a fin guard to protect the fins from damage.
Intensification of Karta heat and mass transfer in combined gas-liquid processes and apparatuses makes it possible to increase the productivity of apparatuses while reducing their dimensions, metal consumption, cost, and operating costs. Intensification makes it possible to obtain new effects commensurate and sometimes superior in importance to the main target effects (a decrease in incrustation on the inner surfaces of apparatus, an increase in the selectivity of chemical processes, a decrease in energy costs).
