Search results for "Image."
showing 10 items of 6790 documents
High-definition imaging in endoscopic transsphenoidal pituitary surgery.
2011
Background The transsphenoidal approach to sellar lesions has evolved enormously since its first description in the early 20th century. Endoscopic surgical strategies have become an integral part of the surgical armamentarium. More recently, high-definition (HD) digital cameras with better image resolution were introduced, although their value for the surgical procedure remains equivocal. The purpose of this study was to compare the image quality of a standard-definition (SD) camera with a new HD camera. Methods A transsphenoidal pituitary adenomectomy was recorded simultaneously in HD and SD resolution. Eight experienced neurosurgeons were asked to identify predefined as well as not predef…
Evolving endoscopic strategies for detection and treatment of neoplastic lesions in inflammatory bowel disease
2013
The paradigm for neoplasia surveillance in IBD is rapidly evolving with advancements in endoscopic imaging technology. Modern technology has demonstrated a remarkably improved capacity to detect and characterize subtle neoplastic lesions. As such, practices of obtaining interval random biopsy specimens to identify “invisible”neoplasia and of recommending total proctocolectomy for treatment of early neoplastic lesions are gradually being phased out. Further research is required to confirm the safety and effectiveness of endoscopic resection of more advanced neoplastic lesions, including DALMs and lesions bearing HG-IEN. Moving forward, studies evaluating CRC risk profiles in IBD patients wou…
Body image avoidance affects interpersonal distance perception: A virtual environment experiment.
2019
OBJECTIVE Eating disorders have a considerable influence on social contacts. The avoidance towards the own body may result in the avoidance of others. Previous research has found a preference for larger interaction distances in individuals with eating disorders (ED) as compared to control participants (CG). We aimed to replicate these findings and to investigate whether the body weight of the interactant moderates the effect. METHOD We recruited a female sample with mixed ED subtypes (n = 21) and a female CG (n = 28). Participants were immersed in a virtual environment and engaged in a number of fictitious social interactions. They approached a virtual person until a comfortable distance fo…
Disentangling relations between the desirability of the thin-ideal, body checking, and worry on college women's weight-loss dieting
2019
The study used self-regulation theory to elucidate the relationships between the desirability of the thin-ideal goal, dispositional worry, body checking and weight-loss dieting (WLD) in college women. We hypothesized that body checking would mediate the relationship between the desirability of the thin-ideal goal and WLD: the desire to be thin would be associated with more WLD through more frequent body checking. We also hypothesized that dispositional worry would moderate this mediation pathway, such that the mediation pathway would be stronger for those higher in worry. Finally, all effects were expected to occur when controlling for self-reported body size. A paper and pencil survey was …
Two sides of the same coin? A new instrument to assess body checking and avoidance behaviors in eating disorders
2017
Body checking (BC) and avoidance behaviors (BA) are the dominant behavioral features of body image disturbances (BID) that characterize most individuals with eating disorders (EDs). Whereas BC can be reliably assessed, a valid assessment tool for BA is lacking, preventing an adequate assessment of BID differences across different EDs (anorexia nervosa, AN; bulimia nervosa, BN; binge eating disorder, BED). A total of 310 women with EDs and 112 nonclinical controls completed measures of BC-, BA- and ED-related symptoms. BA did not differentiate between EDs, whereas BC did: it was highest in AN and BN, and lowest in BED. Multivariate analyses also discriminated AN from BN based on BC. Given th…
Assessing the Relationship Between Attitudinal and Perceptual Component of Body Image Disturbance Using Virtual Reality
2018
Body image disturbance (BID) affects quality of life even in the absence of clinically diagnosable eating pathology, and numerous studies have shown its crucial role in the emergence and maintenance of eating disorders. This study aimed at exploring attitudinal and perceptual components of BID using a novel virtual reality (VR)-based paradigm. A community sample of women (N = 27) recreated in VR their perceived body in both an allocentric (third-person view) and egocentric (first-person view) perspective. Specifically, women were able to choose between a wide range of three-dimensional bodies spanning body mass index 12.5-42.5 kg/m2. Attitudinal indexes of BID (body dissatisfaction, body un…
Memory bias for schema-related stimuli in individuals with bulimia nervosa
2010
This study investigates whether individuals with bulimia nervosa (BN) have a memory bias in relation to explicit memory (cued and free recall vs. verbal and pictorial recognition tasks). Twenty-five participants diagnosed with BN and 27 normal controls (NC) were exposed to body-related, food-related, and neutral TV commercials, and then recall and recognition rates were assessed. Poorer recognition and recall of body-related stimuli was found for BN in comparison to NC, suggesting a memory bias. Results are discussed in relation to previous studies, along with suggestions as to how future studies can gain more insight into dysfunctions in information processing that can lead to the maintena…
Predictors of improved eating behaviour following body image therapy: A pilot study
2011
Cognitive processes seem to play a vital role in eating disorders and body image. The current study, therefore, examines the impact and change of dysfunctional cognitions during a body image group therapy, which included 41 patients with an eating disorder. Dysfunctional cognitions were assessed with the 'Eating Disorder Cognition Questionnaire' both before and after treatment. Eating disorder psychopathology was also assessed. Results indicate a significant reduction of dysfunctional cognitions relating to 'body and self-esteem', 'dietary restraint', 'eating and loss of control', as well as 'internalisation and social comparison'. Furthermore, the changes in dysfunctional cognitions were a…
Are individuals with an eating disorder less sensitive to aesthetic flaws than healthy controls?
2008
Abstract Objective This study aimed to investigate whether the positive evaluation of other people's bodies is due to difficulties in the recognition of flaws in attractive features of others. Method Thirty female individuals with an eating disorder (IEDs) and 30 normal controls (NCs) rated pictures of a woman's face in relation to various manipulated facial features. Accuracy rates, discrepancy scores, and response times were assessed. Participants also answered questionnaires relating to social comparison, internalization of the slender ideal, and eating disorder symptoms. Results NCs were significantly more accurate at detecting flaws and recognized the degree of manipulation better than…
Influence of appearance-related TV commercials on body image state.
2008
This study investigates the influence of media exposure on body image state in eating-disordered (ED) patients. The attitudinal and perceptual components of body image are assessed, as well as any associations with dysfunctional cognitions and behavioral consequences. Twenty-five ED patients and 25 non-ED controls (ND) viewed commercials either featuring appearance (AC; 5 min) or not featuring appearance (NC; 5 min). Both perceptual and attitudinal body image components changed markedly after the AC condition for ED patients, compared with the ND group and NC condition. Cognitions referring to dietary restraint and internalization/social comparison also changed significantly in ED patients…