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3 result(s) for "Mewes, Kai"
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Frequency and correlates of suicidality in a sample of traumatized treatment-seeking refugees
Introduction Refugees are at heightened risk for suicidality due to trauma exposure, elevated prevalence of mental disorders, and postmigration stressors. Therefore, it is important to study Suicidal Behavior Disorder (SBD), included in DSM-5 for research purposes, as well as correlates of suicidality in this population. Methods In a sample of N  = 103 treatment-seeking refugees, SBD frequency was assessed using a clinical interview. Associations between suicidality (presence and severity) and potential correlates - gender, age, Posttraumatic Stress Disorder (PTSD), Disturbances in Self-Organization (DSO), depression, insecure asylum status, flight duration, postmigration living difficulties (PMLD) and religiosity - were examined via univariate and multivariate analyses. Results Fifteen patients (14.66%) met criteria for SBD. DSO were associated with the presence of suicidality in univariate and multivariate analyses and with the severity of suicidality in multivariate analyses. Sexual trauma frequency was associated with the presence of suicidality, while PTSD severity and lower religiosity were linked to greater suicidality severity. Depressive symptoms were associated with suicidality only in univariate analyses while an insecure asylum status was associated with suicidality in multivariate analyses only. Conclusion Suicidality should be systematically assessed in treatment-seeking refugees, particularly those with DSO or an insecure asylum status. Brief suicide prevention interventions may be warranted when treatment duration is uncertain, and targeted PTSD treatments should be offered when indicated. Clinical trial registration The RCT was pre-registered at the German Clinical Trials Register (DRKS 00019876) on 28th of April 2020. The specific research question and analyses of this investigation were not pre-registered separately.
Concepts for augmented reality visualisation to support needle guidance inside the MRI
During MRI-guided interventions, navigation support is often separated from the operating field on displays, which impedes the interpretation of positions and orientations of instruments inside the patient's body as well as hand–eye coordination. To overcome these issues projector-based augmented reality can be used to support needle guidance inside the MRI bore directly in the operating field. The authors present two visualisation concepts for needle navigation aids which were compared in an accuracy and usability study with eight participants, four of whom were experienced radiologists. The results show that both concepts are equally accurate ($2.0 \\pm 0.6$2.0±0.6 and $1.7 \\pm 0.5\\, {\\rm mm}$1.7±0.5mm), useful and easy to use, with clear visual feedback about the state and success of the needle puncture. For easier clinical applicability, a dynamic projection on moving surfaces and organ movement tracking are needed. For now, tests with patients with respiratory arrest are feasible.