Search results for "High definition"

Su1645 G-Eyeâ,,¢ High-Definition Colonoscopy Increases Adenoma Detection Rate - a Prospective Randomized Multicenter Study of 1000 Patients

2017

Differences Between Conventional Anorectal Manometry and High Resolution/High Definition Anorectal Manometry

2020

The book provides a comprehensive overview of high-resolution and high-definition anorectal manometry (HRAM/HDAM), showing the possible benefits of a wider use of these techniques in clinical practice, as well as their limitations. Although these techniques provide fresh insights into anorectal function and offer a new perspective on the pathophysiologic mechanisms of many defecation disturbances, there is a need to clarify whether their use has beneficial effects on clinical management compared to conventional manometry. There is still a considerable way to go to gain the clinical diffusion of esophageal HRM, which has become the gold standard in studying esophageal motility. Indeed, many …

Performing, Analyzing, and Interpreting HRAM and HDAM Recordings

2020

Anorectal manometry is one of the most widely performed tests for the assessment of anal sphincter function and anorectal coordination. Nowadays high resolution (HRAM) and high definition anorectal manometry (HDAM) are available, instead of the water-perfused system. The ability to visualize the anorectum as a dynamic structure during test maneuvers should intuitively allow for a better appreciation of the normal physiology and hopefully enhance our understanding of the pathophysiology of defecatory dysfunctions. Even if the anorectal manometry protocols can vary by centers, the procedure must include an assessment of rectoanal pressure and anal canal length at rest, cough reflex test, rect…

Influence of high-definition anodal transcranial direct current stimulation (HD-atDCS) on motor learning of a high-speed bimanual task

2017

Recognition and characterization of small colonic neoplasia with high-definition colonoscopy using i-Scan is as precise as chromoendoscopy

2010

Abstract Background The EPKi system (Pentax, Japan) enables resolution above HDTV. Aim of the study was to test the efficacy of HD+ alone and with the new post-processing digital filter i-Scan or chromoendoscopy (Methylene blue 0.1%) in screening for colorectal cancer. We focused on lesions less than 5 mm as a surrogate marker for the optical possibilities of the EPKi system. Methods The last 30 cm of the colon in a screening population were inspected with HD+ alone, in combination with i-Scan (2:1 randomisation) and subsequently with chromoendoscopy. All lesions were characterized and targeted biopsies were performed. Results i-Scan augmented in 69 patients the identification of lesions fr…

Improving the Effect of Transcranial Alternating Current Stimulation (tACS): A Systematic Review

2021

With the development of electrical stimulation technology, traditional transcranial alternating current stimulation (tACS) technology has been found to have the drawback of not targeting a specific area accurately. Studies have shown that optimizing the number and position of electrodes during electrical stimulation has a very good effect on enhancing brain stimulation accuracy. At present, an increasing number of laboratories have begun to optimize tACS. However, there has been no study summarizing the optimization methods of tACS. Determining whether different optimization methods are effective and the optimization approach could provide information that could guide future tACS research. …