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Reinforcement learning-based framework for whale rendezvous via autonomous sensing robots.
Sci Robot
October 2024
Project CETI, New York, NY, USA.
Rendezvous with sperm whales for biological observations is made challenging by their prolonged dive patterns. Here, we propose an algorithmic framework that codevelops multiagent reinforcement learning-based routing (autonomy module) and synthetic aperture radar-based very high frequency (VHF) signal-based bearing estimation (sensing module) for maximizing rendezvous opportunities of autonomous robots with sperm whales. The sensing module is compatible with low-energy VHF tags commonly used for tracking wildlife.
View Article and Find Full Text PDFEfficacy and safety of the needle rendezvous technique for infrainguinal arterial calcified lesions.
CVIR Endovasc
October 2024
Department of Cardiology, Sapporo Heart Center, Asia Medical Group, Sapporo Cardio Vascular Clinic, North 49, East 16, 8-1, Higashi Ward, Sapporo, Hokkaido, 007-0849, Japan.
Background: Lower extremity artery disease is increasingly prevalent, and complex lesions such as calcified chronic total occlusions pose significant challenges during endovascular therapy. The needle rendezvous technique, which involves puncturing a needle toward the guidewire within the lesion or lumen and advancing the guidewire into the needle lumen to achieve guidewire externalization, offers a potential solution. If device passage remains challenging, the Rendezvous-PIERCE technique can be subsequently employed by advancing the needle over the externalized guidewire to modify the lesion directly.
View Article and Find Full Text PDFBackground: Endoscopic ultrasound (EUS)-guided biliary rendezvous (RV) is an EUS-assisted technique described as a rescue method in cases of failed biliary cannulation endoscopic retrograde cholangiography (ERC). Current literature remains unclear regarding its current role. The study aim was to evaluate the effectiveness for biliary EUS-RV, and comparison between benign vs malignant biliopancreatic disorders.
View Article and Find Full Text PDFCombined antegrade and retrograde dilation (CARD) for management of complete esophageal obstruction: Multicenter case series.
Endosc Int Open
October 2024
Gastroenterology and Nutrition, Geisinger Medical Center, Danville, United States.
Article Synopsis
- Complete esophageal obstruction (CEO) is a rare but serious complication from radiation therapy for esophageal or head and neck cancers, and managing it can be difficult using standard endoscopic methods.
- A study on six patients demonstrated that a combined anterograde and retrograde endoscopic dilation (CARD) approach successfully restored esophageal function in 86% of cases, indicating high technical success.
- While some adverse events occurred, including pneumothorax in two patients, most had improved swallowing abilities after the procedure, suggesting CARD is a safer and effective option compared to traditional methods.
Two institutes' experience in laparoendoscopic "rendezvous" technique for patients undergoing laparoscopic cholecystectomy for stones in the gallbladder and bile duct: a prospective randomized comparative clinical trial.
Updates Surg
October 2024
Assistant Professor of General Surgery, Zagazig University, Zagazig City, Egypt.
There is still disagreement on the best treatment option for cholecystocholedocholithiasis. Although there are some benefits to the single-step procedure, the "laparoendoscopic rendezvous" (LERV) technique that include a lower risk of post-ERCP pancreatitis and a shorter hospital stay, the standard technique is still the two-step approach for clearing the common bile duct (CBD) using ERCP and then performing a laparoscopic cholecystectomy. The purpose of this study was to assess the effectiveness and safety of the LERV technique vs.
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