A5044267284- Electrical and Bioimpedance Tomography
- Obsessive-Compulsive Spectrum Disorders
- Photoacoustic and Ultrasonic Imaging
- Ultrasound Imaging and Elastography
- Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Ultrasonics and Acoustic Wave Propagation
- Mental Health Research Topics
- Eating Disorders and Behaviors
- Non-Destructive Testing Techniques
- Body Image and Dysmorphia Studies
- Bullying, Victimization, and Aggression
- Behavioral and Psychological Studies
- Heart Rate Variability and Autonomic Control
- Optical Imaging and Spectroscopy Techniques
- ECG Monitoring and Analysis
- Nanoplatforms for cancer theranostics
- Flow Measurement and Analysis
- Psychology of Moral and Emotional Judgment
- Hemodynamic Monitoring and Therapy
- Psychosomatic Disorders and Their Treatments
- Personality Disorders and Psychopathology
- Ultrasound and Hyperthermia Applications
- Cardiovascular Function and Risk Factors
- Thermography and Photoacoustic Techniques
- Sexuality, Behavior, and Technology
University of Iceland
2012-2023
RMIT University
2013
National University Hospital of Iceland
2005-2013
Reykjavík University
2009-2013
University of Arizona
2009-2011
University of Michigan
2006-2009
University of Amsterdam
2004-2007
Ann Arbor Center for Independent Living
2007
Michigan United
2007
University of Roehampton
1999-2000
The study of school bullying has recently assumed an international dimension, but is faced with difficulties in finding terms different languages to correspond the English word bullying. To investigate meanings given various terms, a set 25 stick–figure cartoons was devised, covering range social situations between peers. These were shown samples 8– and 14–year–old pupils ( N = 1,245; n 604 at 8 years, 641 14 years) schools countries, who judged whether native cognate bullying, applied them....
This study examines the impact of a peer support service as an intervention to counteract bullying in school with serious problem. The was assessed by survey and qualitative interviews staff, supporters, users potential service. indicated that had no overall effect on levels whole or likelihood peers would intervene help. However, helpers some victims were helped initiative, perceived it positive light. Some explanations findings implications for implementation such interventions are discussed.
Recent clinical studies have demonstrated that photoacoustic imaging (PAI) provides important diagnostic information during a routine breast exam for cancer. PAI enhances contrast between blood vessels and background tissue, which can help characterize suspicious lesions. However, most systems are either not compatible with commercial ultrasound or inefficiently deliver light to the region of interest, effectively reducing sensitivity technique. To address potentially overcome these...
Surgery to correct severe heart arrhythmias usually requires detailed maps of the cardiac activation wave prior ablation. The pinpoint electrical mapping procedure is laborious and limited by its spatial resolution (5-10 mm). We propose ultrasound current source density imaging (UCSDI), a direct 3-D technique that potentially facilitates existing procedures with superior resolution. based on pressure-induced change in resistivity known as acoustoelectric (AE) effect, which spatially confined...
When a new field is explored, variety of approaches can be used to clarify, identify and explain the phenomenon at hand. Traditional psychological research attributes quasi‐physical quality bullying phenomenon, attempts capture it by rigorous measurement number variables. We argue that, while this approach has considerable advantages, an investigation way “amateur scientists” “bullying” aid more detailed understanding. The use Critical Incident Technique in focus groups allowed participants...
Ultrasound current source density imaging (UCSDI) exploits the acoustoelectric (AE) effect, an interaction between ultrasound pressure and electrical resistivity, to map conduction in heart. The conversion efficiency for UCSDI is determined by AE constant K, a fundamental property of all materials; K directly affects magnitude detected voltage signal UCSDI. This paper describes technique measuring biological tissue, reports its value first time cadaver hearts. A custom chamber was designed...
It has been suggested that mental habits may underpin a heightened disposition to engage in rumination response negative mood. The aim of the current study was assess role habit dynamic interplay between affect and ruminative thinking flow daily life experiences. Using mobile ecological momentary assessment, 97 participants recorded ten times over six days, after completing measures trait brooding habitual characteristics (e.g. automaticity, lack conscious awareness, intent control)....
There is a clear need for more detailed analysis of the role cognitive self-statements in virtual reality exposure therapy (VRET). To date, no research on this topic has been done. The primary aim study was to investigate whether coping would enhance effectiveness VRET. In randomized crossover design, 26 patients with acrophobia (DSM-IV diagnosis specific phobia) were randomly assigned two sessions VRET followed by plus self-statements, or other way around: first Results showed that VRET,...
Ultrasound traversing a biologic fluid or tissue generates local change in electrical conductivity known as the acoustoelectric effect. The authors exploit this interaction to image ionic current injected into abdominal segment of lobster nerve cord. A pair recording electrodes detected signal induced by pulses focused ultrasound (1.4 7.5MHz). was linear with at 2MPa (0.7μV∕mAcm2) and pressure 75mA∕cm2 (23μV∕MPa). Acoustoelectric imaging biocurrents potentially enhances spatial resolution...
We describe the first mapping of biological current in a live heart using ultrasound source density imaging (UCSDI). Ablation procedures that treat severe arrhythmias require detailed maps cardiac activation wave. The conventional procedure is time-consuming and limited by its poor spatial resolution (5-10 mm). UCSDI can potentially improve on existing procedures. It based pressure-induced change resistivity known as acousto-electric (AE) effect, which spatially confined to focus. Data from...
A clinical ultrasound scanner and 14 MHz linear array collected real-time photoacoustic images (PAI) during an injection of gold nanorods (GNRs) near the region a mature PC-3 prostate tumor in mice implanted with skin flap window chamber. Three dimensional spectroscopic PAI (690-900 nm) was also performed to investigate absorption changes enhance specific detection GNRs. Whereas GNRs improved contrast (+18 dB), spectrum consistent elevated infrared The versatile imaging platform potentially...
Understanding the tumor microenvironment is critical to characterizing how cancers operate and predicting their response treatment. We describe a novel, high-resolution coregistered photoacoustic (PA) pulse echo (PE) ultrasound system used image microenvironment. Compared traditional optical systems, platform provides complementary contrast important depth information. Three mice are implanted with dorsal skin flap window chamber injected PC-3 prostate cells transfected green fluorescent...
Ultrasound current source density imaging (UCSDI) potentially transforms conventional electrical mapping of excitable organs, such as the brain and heart. For this study, we demonstrate volume a time-varying field by scanning focused ultrasound beam detecting acoustoelectric (AE) interaction signal. A pair electrodes produced an alternating distribution in special chamber filled with 0.9% NaCl solution. pulsed 1 MHz was scanned near sink, while AE signal detected on remote recording...
In the present study, we examined psychometric properties of Skin Picking Impact Scale ( SPIS ; Keuthen, Deckersbach, Wilhelm et al ., 2001), a 10 item self‐report questionnaire designed to assess psychosocial impact skin picking disorder SPD ). Participants were 650 individuals who met criteria for in an online survey. Exploratory and confirmatory factor analyses demonstrated unitary structure with high internal consistency α = 0.94). Consequently, constructed abbreviated 4‐item version...