We present an algorithm for tracking the position of a curling stone from broadcast footage of curling events. Due to the constant panning of the camera in addition to perspective changes in the image, this introduces a need for image rectification and tracking of the camera view on the ice. We break the algorithm in four distinct components: rectification, frame tracking, stone tracking, and l...

Gall-stone ileus associated with tuberculous strictures is an uncommon cause of bowel obstruction related to a cholecystoenteric fistula. The stone usually obstructs the narrowest part of the intestine. The patient whose intestine is strictured due to tuberculosis or other disease, the stone can impact that part of the strictured area. We report such a case of gall-stone ileus in a patient of 8...

Management of solid wastes is considered as an economic and environmental issue in the building stone industry. The current study uses raw and calcined calcareous sludge, generated in the stone cutting factories, in order to remove sulfur dioxide. Sludge characterization has been performed, using X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-d...

BACKGROUND The metabolic syndrome (MS) is associated with increased prevalence of kidney stones, yet the specific stone type remains largely unknown. This study was conducted to assess whether risk factors associated with calcium nephrolithiasis increase with individual characteristics of the MS. METHODS A retrospective analysis was performed in 109 non-stone-forming subjects and 128 recurren...

INTRODUCTION Understanding the factors affecting success of extracorporeal shockwave lithotripsy (SWL) would improve informed decision-making on the most appropriate treatment modality for an individual patient. Although stone size and skin-to-stone distance do correlate with fragmentation efficacy, it has been shown that stone composition and architecture, as reflected by structural heterogene...

BACKGROUND Cholesterol metabolism may be involved in pediatric gallstone disease. We aimed to reveal cholesterol metabolites and phytosterols and their relation to stone composition of sterols in children having black pigment and cholesterol stones. METHODS We performed retrospective controlled clinical study, in which we examined parameters of cholesterol metabolism and liver function values...

PURPOSE To compare the effectiveness of novel nanosecond electropulse lithotripsy with standard electrohydraulic lithotripsy to demonstrate and authenticate their differences because both modalities appear to be similar. MATERIALS AND METHODS An in vitro fragmentation study was conducted using cuboid BegoStone phantoms, which mimic hard and soft stones, based on an established model. Three di...

A variety of factors influence the formation of calcium oxalate kidney stones, including gender, diet, and urinary excretion of calcium, oxalate, and uric acid. Several of these factors may be related to body size. Because men on average have a larger body size and a threefold higher lifetime risk of stone formation than women, body size may be an important risk factor for calcium oxalate stone...

Introduction The recurrence rate of choledocholithiasis after endoscopic stone extraction differs from 6.4% to 24%. Although the etiology of stone recurrence after initial ERCP has not been fully elucidated, some risk factors for stone recurrence have been reported: a common bile duct (CBD) dilatation, periampullary diverticula (PAD), pneumobilia, and acute CBD angulation. The early detection a...