Dr Sonke pursued higher education at Erasmus Medical School in Rotterdam Netherlands in 1985. He completed a two- year fellowship in cancer research in Rijswijk and Amsterdam Holland, which focused in radiation biology, and has worked with Kankerbestrijding (KWF) and Dutch Cancer Society. Relocating to England, the doctor completed internships in oncology at Princess Royal Hospital; emergency medicine at Hull Royal Infirmary; anesthesia at Royal Berkshire Hospital; and clinical chemistry at Royal Hallamshire Hospital.

Seeking further education, Dr. Sonke worked as a resident in anatomical and clinical pathology at Stony Brook University in New York and at Winthrop University Hospital. He capped his formal education with a residency in nuclear medicine at North Shore Hospital and a residency in diagnostic radiology at New York Methodist Hospital. Board certified in diagnostic radiology through The American Board of Radiology (ABR), he notes that the ABR is a not-for-profit physician-led organization that oversees the certification and ongoing professional development of specialists in diagnostic radiology and interventional radiology.

A specialist in body imaging; nuclear medicine; PET/CT; body CT; MR and ultrasound imaging, Dr. Sonke is currently an attending physician at Westchester Medical Center in Valhalla, New York. He practices radiology using non-invasive imaging scans to diagnose and provide therapeutic options for patients.

Aside from his medical practice, Dr. Sonke is an assistant professor of radiology at New York Medical College and is a member of the American Roentgen Ray Society and the European Society of Radiology.