Dr. Safonov is an expert in pulmonology and thoracic diagnostic ultrasound, abdominal diagnostic ultrasound, and elastography. He published 200 research articles, one national guideline on diagnostic radiology in gastroenterology, 5 academic books on diagnostic ultrasound in lung and pleura diseases, one academic book on shear wave elastography. Dr. Safonov is the author of nine patents for inventions.