PTW is the global market leader for high-precision dosimetry and intelligent quality control solutions in radiation medicine. Founded in 1922, the German company is the pioneer in medical radiation measurement. PTW technologies enable radiation experts to precisely monitor highly complex clinical radiation equipment and radiation treatment plans. The family-run company has invested continuously in recent years in its headquarters in Freiburg, where high-tech dosimetry solutions are developed, designed and manufactured for the world market. In addition, PTW owns one of the oldest and largest accredited calibration laboratories in the field of ionizing radiation (SSDL) and supplies national dosimetry laboratories with special equipment and services. In 2014, the company established THE DOSIMETRY SCHOOL to promote the exchange of knowledge in clinical dosimetry. PTW operates globally with nine international subsidiaries and more than 300 employees worldwide.