H
Heidrun Wabnitz
Researcher at German National Metrology Institute
Publications - 144
Citations - 4547
Heidrun Wabnitz is an academic researcher from German National Metrology Institute. The author has contributed to research in topics: Diffuse optical imaging & Photon counting. The author has an hindex of 33, co-authored 140 publications receiving 4016 citations.
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Journal ArticleDOI
The physiological origin of task-evoked systemic artefacts in functional near infrared spectroscopy
Evgeniya Kirilina,Alexander Jelzow,Angela Heine,Michael Niessing,Heidrun Wabnitz,Rüdiger Brühl,Bernd Ittermann,Arthur M. Jacobs,Ilias Tachtsidis +8 more
TL;DR: It is found that skin blood volume strongly depends on the cognitive state and that sources of task-evoked systemic signals in fNIRS are co-localized with veins draining the scalp, and it is concluded that the physiological origin of the systemic artefact is a task- Evoked sympathetic arterial vasoconstriction followed by a decrease in venous volume.
Journal ArticleDOI
Time-resolved multidistance near-infrared spectroscopy of the adult head: intracerebral and extracerebral absorption changes from moments of distribution of times of flight of photons
Adam Liebert,Heidrun Wabnitz,J. Steinbrink,Hellmuth Obrig,M. Möller,Rainer Macdonald,Arno Villringer,Herbert Rinneberg +7 more
TL;DR: Multidistance time-resolved diffuse reflectance spectroscopy of the head of a healthy adult after intravenous administration of a bolus of indocyanine green is reported on.
Journal ArticleDOI
Determining changes in NIR absorption using a layered model of the human head.
J. Steinbrink,J. Steinbrink,Heidrun Wabnitz,Hellmuth Obrig,Arno Villringer,H. Rinneberg,H. Rinneberg +6 more
TL;DR: A theoretical approach is presented to determine absorption changes in different compartments of a layered structure from distributions of times of flight of photons, and a single-distance, time-domain method is applied to in vivo measurements on the human head.
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Time-domain optical mammography: initial clinical results on detection and characterization of breast tumors
Dirk Grosenick,K. Thomas Moesta,Heidrun Wabnitz,Jörg Mucke,Christian Stroszczynski,Rainer Macdonald,Peter M. Schlag,Herbert Rinneberg +7 more
TL;DR: Effective tumor optical properties derived from a homogeneous model were used to deduce physiological information and all tumors exhibited increased total hemoglobin concentration and decreased or unchanged blood oxygen saturation compared with surrounding healthy tissue.
Journal ArticleDOI
Performance assessment of photon migration instruments: the MEDPHOT protocol
Antonio Pifferi,Alessandro Torricelli,Andrea Bassi,Paola Taroni,Rinaldo Cubeddu,Heidrun Wabnitz,Dirk Grosenick,M. Möller,Rainer Macdonald,Johannes Swartling,Tomas Svensson,Stefan Andersson-Engels,Robert L. P. van Veen,Henricus J. C. M. Sterenborg,Jean-Michel Tualle,Ha Lien Nghiem,Sigrid Avrillier,Maurice Whelan,H Stamm +18 more
TL;DR: A comprehensive protocol for the performance assessment of photon migration instruments based on five criteria: accuracy, linearity, noise, stability, and reproducibility is proposed.