Hannes Wahl

Hannes Wahl
Universitätsklinikum Carl Gustav Carus Dresden · Institu und Poliklinik für Diagnostische und Interventionelle Neuroradiologie

Dipl.-Ing.

About

22
Publications
1,219
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94
Citations
Citations since 2017
18 Research Items
89 Citations
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2017201820192020202120222023051015202530
2017201820192020202120222023051015202530

Publications

Publications (22)
Article
Full-text available
The determination of exact tumor boundaries within eloquent brain regions is essential to maximize the extent of resection. Recent studies showed that intraoperative optical imaging (IOI) combined with median nerve stimulation is a helpful tool for visualization of the primary sensory cortex (PSC). In this technical note, we describe a novel approa...
Article
Full-text available
Background Multiple Sclerosis (MS) lesions are pathologically heterogeneous and the temporal behavior in terms of growth and myelination status of individual lesions is highly variable, especially in the early phase of the disease. Thus, monitoring the development of individual lesion myelination by using quantitative magnetic resonance myelin wate...
Article
Full-text available
Avoiding loss is a crucial, adaptive guide to human behavior. While previous developmental research has primarily focused on gaining rewards, less attention has been paid to loss processing and its avoidance. In daily life, it is often unknown how likely an action will result in a loss, making the role of uncertainty in loss processing particularly...
Article
Full-text available
Objective This is a cross-sectional study to evaluate whether β-amyloid-(Aβ)-PET positivity and cortical superficial siderosis (cSS) in patients with cerebral amyloid angiopathy (CAA) are regionally colocalized. Methods Ten patients with probable or possible CAA (73.3 ± 10.9 years, 40% women) underwent MRI examination with a gradient-echo-T2*-weig...
Article
Introduction Ionizing radiation can cause increased opacity of the lens and later lead to radiation-induced cataract. Therefore, the eye lens should be positioned outside of the direct radiation beam in cranial computed tomography (CCT). If this is not possible, protective measures must be taken, which includes the use of external lens protectors....
Article
Full-text available
Adolescence has been linked to an enhanced tolerance of uncertainty and risky behavior and is possibly connected to an increased response toward rewards. However, previous research has produced inconsistent findings. To investigate whether these findings are due to different reward probabilities used in the experimental design, we extended a moneta...
Article
Full-text available
Cortical superficial siderosis (cSS) is a common feature in patients with cerebral amyloid angiopathy (CAA). The correlation between β-amyloid and/or tau pathology and the occurrence of cSS is unclear. We report on an 80-year-old male patient who was diagnosed with probable CAA according to modified Boston criteria and underwent longitudinal magnet...
Article
Full-text available
Background To assess whether thrombus surface morphology has an impact on first pass reperfusion in contact aspiration (CA) and stent retriever (SR) thrombectomy. Methods From January 2016 to December 2018, consecutive stroke patients with an occlusion of the middle cerebral artery and thrombectomy (CA or SR) were examined in this retrospective st...
Article
Intraoperative optical imaging (IOI) is a marker-free, contactless, and noninvasive imaging technique that is able to visualize metabolic changes of the brain surface following neuronal activation. Although it has been used in the past mainly for the identification of functional brain areas under general anesthesia, the authors investigated the pot...
Article
Background and purpose: Standard treatment of high grade gliomas includes gross tumour resection followed by radio(chemo)therapy. Radiotherapy inevitably leads to irradiation of normal brain tissue. The goal of this prospective, longitudinal study was to use MRI to quantify normal appearing white and grey matter changes following radiation treatme...
Article
Full-text available
Background Magnetic resonance imaging (MRI) is used to follow-up multiple sclerosis (MS) and evaluate disease progression and therapy response via lesion quantification. However, there is a lack of automated post-processing techniques to quantify individual MS lesion change. Objective The present study developed a secondary post-processing algorit...
Article
Full-text available
We performed a longitudinal case-control study on patients with clinically isolated syndrome (CIS) with the aid of quantitative whole-brain myelin imaging. The aim was (1) to parse early myelin decay and to break down its distribution pattern, and (2) to identify an imaging biomarker of the conversion into clinically definite Multiple Sclerosis (MS...
Article
Full-text available
In glioma patients, linac-based photon beam irradiation is a widely applied therapy, which achieves highly conformal target volume coverage, but is also known to cause side-effects to adjacent areas of healthy tissue. Apart from subjective measures, such as quality of life assessment and neurocognitive function tests, objective methods to quantify...
Poster
Full-text available
RESULTS Fig.1 Transmission electron micrograph of a myelinated axon (source Trinity College Dublin) REFERENCES [1] Deoni et al., Magn Reson Med. 2008; 6:1372-87 [2] Kitzler et al. NeuroImage. 2012;59(3):2670-7 [3] Kitzler et al. METHODS Fig.2 Segmented FLAIR lesions and corresponding AFIL detected and labelled lesions in a time-series (top row). Fa...
Article
Abstract Intraoperative optical imaging (IOI) is a localization method for functional areas of the human brain cortex during neurosurgical procedures. The aim of the current work was to develop of a new analysis technique for the computation of two-dimensional IOI activity maps that is suited especially for use in clinical routine. The new analysis...
Conference Paper
The Clinically Isolated Syndrome (CIS) is the precursor of Multiple Sclerosis (MS), an immunologically mediated demyelinating and axonal disease. Clinically silent white matter (WM) lesional pathology suggestive of demyelination is only found in up to 70% of patients at initial presentation and there is only a moderate correlation of the initial vo...

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