Relevance. Intervertebral disc degeneration is a natural process of involutional changes that, in some cases, progresses rapidly and intensely, becoming pathological and accompanied by pain. It is one of the most common causes of disability. Existing methods for visually assessing intervertebral disc degeneration are subjective and dependent on the power of the magnetic resonance imaging scanner. Aim: to develop a unified quantitative method for assessing intervertebral disc degeneration. Materials and methods. A prospective, single-center study was conducted involving 20 patients (60 discs) diagnosed with lumbar dorsopathy. Magnetic resonance imaging was performed in DWI mode with the calculation of the degeneration coefficient (X) as the ratio of the measured diffusion coefficient of the nucleus pulposus to the measured diffusion coefficient of the cerebrospinal fluid. Results. When comparing the obtained X-factor values for degeneration of 60 intervertebral discs with the Pfirrmann classification, degenerated discs had an X-factor value less than 0.8, while no signs of degeneration were detected with an X-factor value greater than 0.8. Consequently, the lower the X-factor v
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