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A Novel Surgical Solution for Sciatic Hernia: Exploring the Totally Extraperitoneal Approach.
Asian J Endosc Surg
December 2024
Department of Gastroenterological Surgery, Hokkaido University, Sapporo, Japan.
Sciatic hernia, a rare type of pelvic floor hernia, presents significant diagnostic and therapeutic challenges. We report the first totally extraperitoneal (TEP) repair of a sciatic hernia, which was performed in a 63-year-old woman who presented with vomiting and poor dietary intake. Computed tomography revealed a strangulated femoral hernia and an incidental herniation of the sigmoid colon through the right sciatic foramen.
View Article and Find Full Text PDFWide FOV metalens for near-infrared capsule endoscopy: advancing compact medical imaging.
Nanophotonics
November 2024
National Key Laboratory on Near-Surface Detection, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China.
This study presents the design, fabrication, and characterization of a wide field-of-view (FOV) metalens optimized for capsule endoscopy. The metalens achieved a 165° FOV with a high modulation transfer function (MTF) of 300 lines per millimeter (lp/mm) across the entire FOV, operating in the near-infrared (NIR) narrow-bandpass imaging at 940 nm. The performance of the metalens-based system is evaluated using two bandwidths, 12 nm and 32 nm, showing MTF values of 0.
View Article and Find Full Text PDFCompact biologically inspired camera with computational compound eye.
Nanophotonics
July 2024
School of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China.
Article Synopsis
- Researchers are developing artificial compound eyes (CE) modeled after arthropods to improve imaging technology, but current designs have issues with defocusing when used with standard CMOS cameras.
- A new compact camera inspired by South American shrimps utilizes a deep learning method to achieve clear wide-field imaging without complex hardware, significantly simplifying its design.
- The innovative camera, weighing only 5.4g and measuring 3 x 3 cm, shows superior resolution and 3D trajectory tracking, making it suitable for applications in nano-optics, medical endoscopy, and robotics.
Purely Endoscopic Subtemporal Keyhole Approach for Trigeminal Schwannomas: Surgical Techniques and Early Results.
Oper Neurosurg (Hagerstown)
November 2024
Department of Neurosurgery, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan.
Background And Objectives: In the past, microscopic transcranial approach was the mainstay of treatment of trigeminal schwannomas. In recent years, several endoscopic procedures have been reported for trigeminal schwannomas. For trigeminal schwannomas arising around the Meckel cave, we introduced a fully endoscopic procedure with a small temporal craniotomy in June 2020 and have performed radical tumor removal as in the conventional approach.
View Article and Find Full Text PDFA novel colonoscope with an extra-wide field of view increases polyp detection rate compared with standard colonoscope: Prospective model-based trial.
Endosc Int Open
October 2024
Department of Gastroenterology, Hepatology and Endocrinology, Robert Bosch Hospital, Stuttgart, Germany.
Colonoscopy, the gold standard for early detection of colorectal cancer, may miss polyps especially those hidden behind folds. This prospective study compared polyp detection and performance of a novel colonoscope with extra-wide field of view (EFOV) of 230 degrees (partially retrograde) to a standard colonoscope (SC, 170 degrees) in a colon model. A 3D printed colon model was used featuring 12 polyps placed throughout different colon segments, with several located on the proximal side of haustral folds.
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