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A Precessing-Coin-like Rotary Actuator for Distal Endoscope Scanners: Proof-of-Concept Study.
Micromachines (Basel)
January 2025
Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
This paper presents, for the first time, a rotary actuator functionalized by an inclined disc rotor that serves as a distal optical scanner for endoscopic probes, enabling side-viewing endoscopy in luminal organs using different imaging/analytic modalities such as optical coherence tomography and Raman spectroscopy. This scanner uses a magnetic rotor designed to have a mirror surface on its backside, being electromagnetically driven to roll around the cone-shaped hollow base to create a motion just like a precessing coin. An optical probing beam directed from the probe's optic fiber is passed through the hollow cone to be incident and bent on the back mirror of the rotating inclined rotor, circulating the probing beam around the scanner for full 360° sideway imaging.
View Article and Find Full Text PDFSmall intestinal obstruction caused by the gastric bezoars in elderly diabetic patients: A case report.
Int J Surg Case Rep
December 2024
School of Clinical Medical College, Hebei University, Baoding 071000, China; Department of Digestive Medicine, Affiliated Hospital of Hebei University, Baoding 071000, China.
Introduction: Bezoar is an unusual cause of small bowel obstruction accounting for 0.4-4 % of all mechanical bowel obstruction. With the rising incidence of diabetes and the associated risk of gastrointestinal issues.
View Article and Find Full Text PDFRising Burden of Colon and Rectum Cancer in China: An Analysis of Trends, Gender Disparities, and Projections to 2030.
Ann Surg Oncol
January 2025
Department of Medical Oncology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, Fujian, China.
Background: Colon and rectum cancer (CRC) is a major health burden in China, with notable gender disparities. This study was designed to analyze trends in CRC incidence, prevalence, and mortality from 1990 to 2021 and to project future trends.
Methods: Using data from the Global Burden of Disease (GBD) Study 2021, we examined CRC burden in China, including incidence, prevalence, mortality, disability-adjusted life years (DALYs), years lived with disability (YLDs), and years of life lost (YLLs).
Difficult airway management in a patient with severe mitral and tricuspid regurgitation, rapid atrial fibrillation, and moderate pulmonary hypertension: a case report.
BMC Anesthesiol
January 2025
Department of Anaesthesiology, West China Hospital, Sichuan University & The Research Units of West China (2018RU012), Chinese Academy of Medical Sciences, Chengdu, 610041, China.
Background: Given the prevalence of cardiovascular disease, encountering difficult airways in this patient population is quite common. The challenge for anesthesiologists lies not only in establishing the airway but also in managing the hemodynamic instability caused by sympathetic activation during intubation. The purpose of this report is to describe the anesthetic experience of this patient with severe mitral and tricuspid regurgitation, atrial fibrillation with rapid ventricular response, and moderate pulmonary hypertension with an anticipated difficult airway.
View Article and Find Full Text PDFDevelopment and performance validation of an affordable and portable high-resolution darkfield polarization-sensitive multispectral imaging microscope for the assessment of radiation dermatitis and fibrosis.
Biomed Opt Express
January 2025
School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China.
Radiation therapy (RT) is widely used for cancer treatment but is found with side effects of radiation dermatitis and fibrosis thereby calling for timely assessment. Nevertheless, current clinical assessment methods are found to be subjective, prone to bias, and accompanied by variability. There is, therefore, an unmet clinical need to explore a new assessment technique, ideally portable and affordable, making it accessible to less developed regions too.
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