ИССЛЕДОВАНИЕ ДИАГНОСТИЧЕСКОГО КАЧЕСТВА МРТ МОЛОЧНЫХ ЖЕЛЕЗ С ПОМОЩЬЮ ИННОВАЦИОННЫХ БЕСПРОВОДНЫХ КАТУШЕК

Abstract

Purpose Determination of the diagnostic capabilities of metadevices for breast MR examination in women. Material and methods In the study, two types of metadevices for examining the mammary glands were considered – for imaging in a field with magnetic induction of 3 T and 1.5 T. 11 healthy women of reproductive age were examined, magnetic resonance images of T1 (turbo spin echo) and T1 3D gradient echo (GRE) were obtained based on the Dixon method with fat saturation. The images were evaluated by radiologists on a 5-point Likert scale. Results The images obtained using the metadevices were characterized by acceptable and comparable absolute and relative signal-to-noise ratios comparing them to images obtained using a standard coil at the same spatial resolution and with a decrease in input power by an average of 27 times for 3.0 T. At the same time, for 1.5 T, the input power was reduced by a factor of 15.6, and the signal-to-noise ratio was increased by a factor of 2. For image quality criteria in terms of presence/absence of artifacts, the average score for the metadevice was higher than the score for the specialized coil by 3 T. For 1.5 T, this parameter turned out to be the same, which was probably associated with a lower level of artifacts by 1.5 T than by 3 T in general. Discussion Analysis of the collected assessments of independent experts indicates that the diagnostic characteristics of magnetic resonance images of the mammary glands obtained using ceramic-based (for 3 T) and wire-based (for 1.5 T) metadevices are of a good and average level, and are comparable in terms of all criteria with standard approaches. Conclusions The assessment of the quality of the obtained images demonstrates the acceptable quality of imaging and reflects the possibility of their application in clinical practice, taking into account ongoing improvements and optimization of the entire set of pulse sequences for MRI of the mammary glands.