{"id":16,"date":"2025-10-23T10:57:19","date_gmt":"2025-10-23T10:57:19","guid":{"rendered":"https:\/\/igrt-lab.i-med.ac.at\/?page_id=16"},"modified":"2026-06-30T13:25:10","modified_gmt":"2026-06-30T13:25:10","slug":"people","status":"publish","type":"page","link":"https:\/\/igrt-lab.i-med.ac.at\/index.php\/people\/","title":{"rendered":"People"},"content":{"rendered":"

<\/h1>\n

Head of Research Group<\/h2>\n
\n
\n
\"\"<\/figure>\n<\/div>\n
\n

Siegfried Kollotzek<\/h3>\n

Assistant Professor<\/strong>
\nEmail: siegfried.kollotzek@i-med.ac.at<\/a><\/p>\n

Siegfried is a physicist specializing in ion physics and medical technologies, currently serving as an Assistant Professor for Image-Guided Radiotherapy at the Department of Radiation Oncology at the Medical University of Innsbruck. He earned his PhD in Ion Physics from the University of Innsbruck, where his doctoral research focused on the doping of multiply charged helium nanodroplets. He previously obtained a Bachelor\u2019s & Master\u2019s degree in Medical Technologies from the universities of T\u00fcbingen, Link\u00f6ping and Innsbruck.<\/p>\n<\/div>\n<\/div>\n

\n

Clinical Medical Physicist \/ Post Doc<\/h2>\n
\n
\n
\"Nina<\/figure>\n<\/div>\n
\n

Nina Bersenkowitsch<\/h3>\n

Medical Physicist<\/strong>
\nEmail: nina.bersenkowitsch@tirol-kliniken.at<\/a><\/p>\n

Bio:<\/strong>
\nNina is a medical physicist specialized in radiation therapy, with additional experience in nuclear medicine and particle therapy. She earned her bachelor\u2019s degree in Technical Physics in Linz before she moved to Innsbruck for her master\u2019s and PhD studies in chemical physics. Her doctoral work focused on the photochemistry of sea-salt aerosols and their light-driven transformations in the atmosphere. In the specialized doctoral programme\u00a0Atoms, Light, and Molecules<\/i>, she completed research stays at ETH Z\u00fcrich, Yale University and UC San Diego.<\/p>\n<\/div>\n<\/div>\n

\n

PhD Students<\/h2>\n
\n
\"\"<\/div>\n
\n

Christian Obwegs<\/h3>\n

Physicist<\/strong>
\nEmail: chirstian.obwegs@i-med.ac.at<\/a><\/p>\n

I am a Medical Physics PhD student with a background in Technical Physics. During my Master\u2019s studies at Graz University of Technology, I worked with the Department of Radiology in Graz to evaluate HyperSight technology for adaptive radiotherapy. Building on this experience, my doctoral research investigates how the Integral Quality Monitor system (IQM) can be used to develop new approaches for treatment monitoring and verification.<\/strong><\/p>\n<\/div>\n<\/div>\n

\n

Student Assistants<\/h2>\n
\n
<\/div>\n<\/div>\n
\n
\n
\"\"<\/figure>\n<\/div>\n
\n

Tim Buck<\/h3>\n

Student Assistant<\/strong>
\nEmail: tim-johannes.buck@student.i-med.ac.at<\/a><\/p>\n

I am a medical student at the Medical University of Innsbruck with a technical background from my Bachelor\u2019s degree in Physics. Currently, I work as a research student assistant focusing on Surface Guided Radiation Therapy (SGRT). My primary role involves developing new quality assurance protocols, specifically translating the technical requirements of ESTRO guidelines into practical application for our systems.<\/p>\n<\/div>\n<\/div>\n

\n

Former Group Member<\/h2>\n

 <\/p>\n

\n
\n

Anna Marina Schneider<\/h3>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Head of Research Group Siegfried Kollotzek Assistant Professor Email: siegfried.kollotzek@i-med.ac.at Siegfried is a physicist specializing in ion physics and medical technologies, currently serving as an Assistant Professor for Image-Guided Radiotherapy at the Department of Radiation Oncology at the Medical University of Innsbruck. He earned his PhD in Ion Physics from the University of Innsbruck, where […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-16","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/igrt-lab.i-med.ac.at\/index.php\/wp-json\/wp\/v2\/pages\/16","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/igrt-lab.i-med.ac.at\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/igrt-lab.i-med.ac.at\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/igrt-lab.i-med.ac.at\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/igrt-lab.i-med.ac.at\/index.php\/wp-json\/wp\/v2\/comments?post=16"}],"version-history":[{"count":57,"href":"https:\/\/igrt-lab.i-med.ac.at\/index.php\/wp-json\/wp\/v2\/pages\/16\/revisions"}],"predecessor-version":[{"id":201,"href":"https:\/\/igrt-lab.i-med.ac.at\/index.php\/wp-json\/wp\/v2\/pages\/16\/revisions\/201"}],"wp:attachment":[{"href":"https:\/\/igrt-lab.i-med.ac.at\/index.php\/wp-json\/wp\/v2\/media?parent=16"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}