Publications by authors named "V Richter"

Purpose: We investigate the extent to which automated audiovisual metrics extracted during an affect production task show statistically significant differences between a cohort of children diagnosed with autism spectrum disorder (ASD) and typically developing controls.

Method: Forty children with ASD and 21 neurotypical controls interacted with a multimodal conversational platform with a virtual agent, Tina, who guided them through tasks prompting facial and vocal communication of four emotions-happy, angry, sad, and afraid-under conditions of high and low verbal and social cognitive task demands.

Results: Individuals with ASD exhibited greater standard deviation of the fundamental frequency of the voice with the minima and maxima of the pitch contour occurring at an earlier time point as compared to controls.

View Article and Find Full Text PDF

Oncolytic virotherapy is a promising approach for cancer treatment. However, when introduced into the body, the virus provokes the production of virus-neutralizing antibodies, which can reduce its antitumor effect. To shield viruses from the immune system, aptamers that can cover the membrane of the viral particle are used.

View Article and Find Full Text PDF

Introduction: There is limited data on the histopathological effects of hemostatic agents (HAs) used during endoscopic submucosal dissection (ESD). We used an porcine model to compare the tissue effects of tranexamic acid (TXA) and adrenaline (epinephrine) compared to controls.

Methods: Standard ESD, using a 2 mm flash-knife, was performed in three pigs.

View Article and Find Full Text PDF

Esophageal high-resolution manometry (HRM) is the gold standard for diagnosing esophageal motility disorders, but it may be poorly tolerated and unsuccessful. We sought to evaluate a protocol for sedation and endoscopy-assisted (SEA) HRM in patients who previously failed standard HRM and assess patient perspectives towards it. Adult patients who previously failed HRM were prospectively enrolled.

View Article and Find Full Text PDF

Endothelial dysfunction represents a potential pathomechanism of neurological post-COVID-19 syndrome (PCS). A recent study demonstrated reduced cerebrovascular reactivity (CVR) in patients with PCS. The aim of this pilot study was to prospectively assess CVR in patients with PCS using breath-hold functional MRI (bh-fMRI).

View Article and Find Full Text PDF

Synopsis of recent research by authors named "V Richter"

  • - V Richter's recent research encompasses the evaluation of novel methodologies in gastrointestinal and neurological diagnostics, focusing on enhancing patient experiences and outcomes, such as using sedation in esophageal manometry and assessing cerebrovascular reactivity in post-COVID-19 syndrome.
  • - The studies reveal significant insights into patient populations, particularly those who have previously failed standard treatments, highlighting the need for improved diagnostic protocols and better understanding of underlying conditions like EE-GERD and neurological impacts of COVID-19.
  • - Additionally, Richter's work includes advanced imaging techniques to differentiate glioma subtypes and assess clinical outcomes in primary central nervous system lymphoma post-therapy, thereby contributing to personalized treatment approaches and the implications of treatment-related changes in imaging findings.