The kidney stones (renal calculi) are the most common medical problems that occur to the people, irrespective of age group. The ultrasonography is a versatile and noninvasive imaging modality often preferred over other techniques such as CT, MRI and X-ray for kidney stone detection. It does not use any ionizing radiation for its operation. However, the main disadvantage associated with ultrasou...

A wavelet-based method is introduced in this paper for efficient speckle suppression and detection of calculi in sonographic images of the kidney.Wavelets are developed in applied mathematics for the analysis of multiscale image structures. The aim of this project is to analyse and to provide most significant content descriptive parameters to identify and classify the kidney stones with ultraso...

PURPOSE We conducted a population based pediatric study to determine the incidence of symptomatic kidney stones during a 25-year period and to identify factors related to variation in stone incidence during this period. MATERIALS AND METHODS The Rochester Epidemiology Project was used to identify all patients younger than 18 years who were diagnosed with kidney stones in Olmsted County, Minne...

PURPOSE Residual fragments following ureteroscopy for calculi may contribute to stone growth, symptoms or additional interventions. We reviewed our experience with ureteroscopy for calculus disease to define the incidence and establish factors predictive of residual fragments. MATERIALS AND METHODS Records associated with 667 consecutive ureteroscopic lithotripsy procedures for upper urinary ...

Objective: To access the safety and efficacy of tubeless percutaneous nephrolithotomy (PCNL). Materials and methods: Since January 2001, 1000 consecutive tubeless PCNLs performed at our hospital were enrolled into this retrospective chart review. The average age of the patients (659 males and 341 females) was 54.4 ± 12.6 years, and 55 patients were 75 years old or older. The stone characteristi...

OBJECTIVES To review the current role of laparoscopy and robot-assisted laparoscopy for managing urinary lithiasis. RESULTS The contemporary indications for laparoscopic stone management are: anatomical variations in location or shape of the kidney (pelvic kidney, horseshoe kidney and malrotated kidney); coexisting pathologies, e.g. pelvi-ureteric junction obstruction; and stones in a renal u...

Urolithiasis can be defined as the clinical condition where the formation of crystal aggregates in the urinary tract results in kidney stones. The presence of a kidney stone in the human body can be externalized in very different ways, it can produce no symptoms but it can be associated with several pain caused for one or some of the following symptoms: gross or microscopic hematuria, obstructi...

In this paper, we investigated a C-arm tomographic technique as a new three dimensional (3D) kidney imaging method for nephrolithiasis and kidney stone detection over view angle less than 180o. Our C-arm tomographic technique provides a series of two dimensional (2D) images with a single scan over 40o view angle. Experimental studies were performed with a kidney phantom that was formed from a p...

A 68-year-old man with serious cervical kyphosis and dorsolumbar scoliosis due to ankylosing spondylitis was admitted with a stone 17 mm in size in left kidney lower calyx. A percutaneous nephrolithotomy operation was decided considering the size and location of stone and the anatomical deformities of patient. The kidney was accessed through monoplaner triangulation method by giving a special p...