Zobrazeno 1 - 10
of 188
pro vyhledávání: '"Wolfgang Birkfellner"'
Autor:
Bettina Kronsteiner, Genova Carrero-Rojas, Lukas F. Reissig, Atieh Seyedian Moghaddam, Karoline M. Schwendt, Sylvia Gerges, Udo Maierhofer, Oskar C. Aszmann, Angel M. Pastor, Attila Kiss, Bruno K. Podesser, Wolfgang Birkfellner, Francesco Moscato, Roland Blumer, Wolfgang J. Weninger
Publikováno v:
Brain Stimulation, Vol 17, Iss 3, Pp 510-524 (2024)
Background: Electrical stimulation of the vagus nerve (VN) is a therapy for epilepsy, obesity, depression, and heart diseases. However, whole nerve stimulation leads to side effects. We examined the neuroanatomy of the mid-cervical segment of the hum
Externí odkaz:
https://doaj.org/article/d6572c9eb8d4404f8c6b82251a926ff0
Autor:
Tito Körner, Stefan Wampl, Lorenz Kiss, Gunpreet Oberoi, Ewald Unger, Wolfgang Birkfellner, Albrecht I. Schmid
Publikováno v:
Frontiers in Physics, Vol 12 (2024)
IntroductionPhantoms mimicking tissue motion have become a valuable tool for quality control in various fields of medical physics including lung phantoms for image-guided radiotherapy and functional imaging in nuclear medicine or magnetic resonance i
Externí odkaz:
https://doaj.org/article/6688cd093c2141fdae829477b910fa8f
Autor:
Jacob Brunner, Lorenz Langgartner, Hannah Danhel, Wolfgang Birkfellner, Christian Richter, Dirk Wagenaar, Markus Stock, Dietmar Georg, Barbara Knäusl
Publikováno v:
Frontiers in Physics, Vol 12 (2024)
Objective3D printing has seen use in many fields of imaging and radiation oncology, but applications in (anthropomorphic) phantoms, especially for particle therapy, are still lacking. The aim of this work was to characterize various available 3D prin
Externí odkaz:
https://doaj.org/article/23789ad4ea544b70b7bf5038b5ccc899
Autor:
Stefanie Kaser, Thomas Bergauer, Ander Biguri, Wolfgang Birkfellner, Sepideh Hatamikia, Albert Hirtl, Christian Irmler, Benjamin Kirchmayer, Felix Ulrich-Pur
Publikováno v:
Zeitschrift für Medizinische Physik, Vol 33, Iss 4, Pp 552-566 (2023)
Proton irradiation is a well-established method to treat deep-seated tumors in radio oncology. Usually, an X-ray computed tomography (CT) scan is used for treatment planning. Since proton therapy is based on the precise knowledge of the stopping powe
Externí odkaz:
https://doaj.org/article/7dad548715824d56bc50d6a0eb5ae2d3
Autor:
Sepideh Hatamikia, Gunpreet Oberoi, Anna Zacher, Gernot Kronreif, Wolfgang Birkfellner, Joachim Kettenbach, Stefanie Ponti, Andrea Lorenz, Martin Buschmann, Laszlo Jaksa, Nikolaus Irnstorfer, Ewald Unger
Publikováno v:
Zeitschrift für Medizinische Physik, Vol 33, Iss 2, Pp 168-181 (2023)
Objectives: To develop and validate a simple approach for building cost-effective imaging phantoms for Cone Beam Computed Tomography (CBCT) using a modified Polyjet additive manufacturing technology where a single material can mimic a range of human
Externí odkaz:
https://doaj.org/article/0334c42f9766412e94ea361fc0cdf32b
Autor:
Christian Wassipaul, Karin Janata-Schwatczek, Hans Domanovits, Dietmar Tamandl, Helmut Prosch, Martina Scharitzer, Stephan Polanec, Ruediger E. Schernthaner, Thomas Mang, Ulrika Asenbaum, Paul Apfaltrer, Filippo Cacioppo, Nikola Schuetz, Michael Weber, Peter Homolka, Wolfgang Birkfellner, Christian Herold, Helmut Ringl
Publikováno v:
EClinicalMedicine, Vol 65, Iss , Pp 102267- (2023)
Summary: Background: Ultra-low-dose CT (ULDCT) examinations of the chest at only twice the radiation dose of a chest X-ray (CXR) now offer a valuable imaging alternative to CXR. This trial prospectively compares ULDCT and CXR for the detection rate o
Externí odkaz:
https://doaj.org/article/15e991521b674616a4b1c40b95ec3f6a
Autor:
Sepideh Hatamikia, Gernot Kronreif, Alexander Unger, Gunpreet Oberoi, Laszlo Jaksa, Ewald Unger, Stefan Koschitz, Ingo Gulyas, Nikolaus Irnstorfer, Martin Buschmann, Joachim Kettenbach, Wolfgang Birkfellner, Andrea Lorenz
Publikováno v:
Zeitschrift für Medizinische Physik, Vol 32, Iss 4, Pp 438-452 (2022)
Current medical imaging phantoms are usually limited by simplified geometry and radiographic skeletal homogeneity, which confines their usage for image quality assessment. In order to fabricate realistic imaging phantoms, replication of the entire ti
Externí odkaz:
https://doaj.org/article/7468216c093c4b6abc20759a8588e3eb
Autor:
Sepideh Hatamikia, Ander Biguri, Gernot Kronreif, Michael Figl, Tom Russ, Joachim Kettenbach, Martin Buschmann, Wolfgang Birkfellner
Publikováno v:
PLoS ONE, Vol 16, Iss 2, p e0245508 (2021)
Cone beam computed tomography (CBCT) has become a vital tool in interventional radiology. Usually, a circular source-detector trajectory is used to acquire a three-dimensional (3D) image. Kinematic constraints due to the patient size or additional me
Externí odkaz:
https://doaj.org/article/a6d329b8e0a64be0829785e7d0f025ae
Autor:
Sepideh Hatamikia, Gunpreet Oberoi, Ewald Unger, Gernot Kronreif, Joachim Kettenbach, Martin Buschmann, Michael Figl, Barbara Knäusl, Francesco Moscato, Wolfgang Birkfellner
Publikováno v:
Frontiers in Bioengineering and Biotechnology, Vol 8 (2020)
Conventional medical imaging phantoms are limited by simplified geometry and radiographic skeletal homogeneity, which confines their usability for image quality assessment and radiation dosimetry. These challenges can be addressed by additive manufac
Externí odkaz:
https://doaj.org/article/282c0de3342b4c1e99c02add79c8c7a9
Autor:
Wolfgang Birkfellner, Michael Figl, Hugo Furtado, Andreas Renner, Sepideh Hatamikia, Johann Hummel
Publikováno v:
Frontiers in Physics, Vol 6 (2018)
With the introduction of computers in medical imaging, which were popularized with the presentation of Hounsfield's ground-breaking work in 1971, numerical image reconstruction and analysis of medical images became a vital part of medical imaging res
Externí odkaz:
https://doaj.org/article/2723e8b3140044848b5f5217a5d3f7ab