{"entity":{"id":"ptw-freiburg","kind":"company","name":"PTW Freiburg","aka":[],"tldr":"PTW is the century-old German dosimetry company whose ionisation chambers, detector arrays and water phantoms are used in radiotherapy departments worldwide to measure the dose a machine really gives.","summary":"PTW Freiburg, founded in 1922, makes reference ionisation chambers, the OCTAVIUS 4D patient-specific QA system, BEAMSCAN water phantoms, in vivo diodes and electrometers, and runs an accredited calibration laboratory. It is one of three dominant radiotherapy QA vendors with Sun Nuclear (Mirion) and IBA Dosimetry.","asOf":"2026-09-17","links":[{"label":"Official website","url":"https://www.ptwdosimetry.com/"}],"tags":["machines-wave2"],"related":[],"cancers":[],"sections":[],"technologies":["radiotherapy-qa-phantoms-dosimeters","in-vivo-dosimetry","treatment-planning-systems"],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":[],"hq":"Freiburg","country":"DE","companyType":"devices","website":"https://www.ptwdosimetry.com/","founded":1922,"stage":"private-large","investors":[],"funding":[]},"route":"/companies/ptw-freiburg/","neighbours":{"technology":[{"id":"in-vivo-dosimetry","kind":"technology","name":"In vivo dosimetry and patient-specific quality assurance","route":"/technologies/in-vivo-dosimetry/"},{"id":"radiotherapy-qa-phantoms-dosimeters","kind":"technology","name":"Radiotherapy QA phantoms and dosimeters (Sun Nuclear, IBA Dosimetry, PTW)","route":"/technologies/radiotherapy-qa-phantoms-dosimeters/"},{"id":"treatment-planning-systems","kind":"technology","name":"Radiotherapy treatment planning and QA software","route":"/technologies/treatment-planning-systems/"}]}}