Urolithiasis constitutes a worldwide health problem with a frequency of up to 15% in the general population. The causes are diverse; exogenous influences and genetic factors act in complex interaction and thereby impede research on stone formation. In recent years, important advances on the elucidation of molecular and genetic bases have been made. Numerous genes for urolithiasis and syndromes ...

INTRODUCTION The characterization of urinary calculi using noninvasive methods has the potential to affect clinical management. CT remains the gold standard for diagnosis of urinary calculi, but has not reliably differentiated varying stone compositions. Dual-energy CT (DECT) has emerged as a technology to improve CT characterization of anatomic structures. This study aims to assess the ability...

Renal lithiasis is a multifactorial disease. An important number of etiologic factors can be adequately modified through diet, since it must be considered that the urine composition is directly related to diet. In fact, the change of inappropriate habitual diet patterns should be the main measure to prevent kidney stones. In this paper, the relation between different dietary factors (liquid int...

Background: Dual-energy computed tomography (DECT) scan has been proposed as an effective modality for determining the chemical composition of renal stone subtypes. Objectives: This study aimed to evaluate and compare efficacy DECT in identification type versus biochemical analysis gold standard. Materials Methods: The 146 stones, removed from patients by surgery, was determined a medical labor...

Background: Dual-energy computed tomography (DECT) scan is a non-invasive method for the in vivo identification of renal stone composition. However, DECT scanners have several demerits, including high cost, low accessibility, and radiation dose to patients. Objectives: The present study aimed investigate efficacy deep neural networks classification types using single-energy CT imaging. Taguchi ...

Nephrolithiasis is one of the most frequent urologic diseases. The aim of this paper is to study the composition and frequency of 8854 patient kidney stones and in a subset of them their metabolic risk factors to be related to their type of calculi. Physicochemical and crystallographic methods were used to assess kidney stone composition. In a subset of 715 patients, we performed an ambulatory ...

OBJECTIVE To determine trends in urolith composition in cats. DESIGN Retrospective case series. SAMPLE POPULATION 5,230 uroliths. PROCEDURES The laboratory database for the Gerald V. Ling Urinary Stone Analysis Laboratory was searched for all urolith submissions from cats from 1985 through 2004. Submission forms were reviewed, and each cat's age, sex, breed, and stone location were record...

Les calculs radio-transparents sont une entité rare et concernent moins de 10 % des rencontrés en pratique clinique. La définition couramment admise est celle basée sur l’absence visibilité d’un calcul la radiographie conventionnelle (Abdomen sans préparation). Revue littérature utilisant les mots clés : radiolucent stone, urolithiasis, computed tomography, imaging. articlés recensés études épi...