Browsing NTNU Open by Author "Iversen, Daniel Høyer"
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Automatic Intraoperative Correction of Brain Shift for Accurate Neuronavigation
Iversen, Daniel Høyer; Wein, Wolfgang; Lindseth, Frank; Unsgård, Geirmund; Reinertsen, Ingerid (Journal article; Peer reviewed, 2018)Background Unreliable neuronavigation owing to inaccurate patient-to-image registration and brain shift is a major problem in conventional magnetic resonance imaging–guided neurosurgery. We performed a prospective ... -
Automatic intraoperative estimation of blood flow direction during neurosurgical interventions
Iversen, Daniel Høyer; Løvstakken, Lasse; Unsgård, Geirmund; Reinertsen, Ingerid (Journal article; Peer reviewed, 2018)Purpose In neurosurgery, reliable information about blood vessel anatomy and flow direction is important to identify, characterize, and avoid damage to the vasculature. Due to ultrasound Doppler angle dependencies and the ... -
Brain atlas for assessing the impact of tumor location on perioperative quality of life in patients with high-grade glioma: A prospective population-based cohort study
Sagberg, Lisa Millgård; Iversen, Daniel Høyer; Fyllingen, Even Hovig; Jakola, Asgeir Store; Reinertsen, Ingerid; Solheim, Ole (Journal article; Peer reviewed, 2019)Background Tumor location is important for surgical decision making. Particular attention is paid to regions that contain sensorimotor and language functions, but it is unknown if these are the most important regions from ... -
Closed-skew Distributions: Simulation, Inversion and Parameter Estimation
Iversen, Daniel Høyer (Master thesis, 2010)Bayesian closed-skew Gaussian inversion is defined as a generalization of traditional Bayesian Gaussian inversion. Bayesian inversion is often used in seismic inversion, and the closed-skew model is able to capture the ... -
Improved Methods for Navigated 3-D Vascular Ultrasound Imaging
Iversen, Daniel Høyer (Doktoravhandlinger ved NTNU, 1503-8181; 2014:190, Doctoral thesis, 2014)3-D reconstruction of flow based on 2-D ultrasound images and position sensor information can be used to portray clinical information not currently available in vascular imaging. However, due to Doppler angle-dependencies ... -
Intraoperative 3D ultrasound-guided resection of diffuse low-grade gliomas: radiological and clinical results
Bø, Hans Kristian; Solheim, Ole; Kvistad, Kjell Arne; Berntsen, Erik Magnus; Torp, Sverre Helge; Skjulsvik, Anne Jarstein; Reinertsen, Ingerid; Iversen, Daniel Høyer; Unsgård, Geirmund; Jakola, Asgeir S (Peer reviewed; Journal article, 2019)OBJECTIVE Extent of resection (EOR) and residual tumor volume are linked to prognosis in low-grade glioma (LGG) and there are various methods for facilitating safe maximal resection in such patients. In this prospective ...