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Related Concept Videos

Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Urinary Tract Calculi III: Medical Management

The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
Urinary Tract Calculi I: Introduction01:28

Urinary Tract Calculi I: Introduction

Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...
Urinary Tract Calculi VI: Surgical Management01:25

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Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

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Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...
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AssessmentSubjective Data: Obtain a detailed health history, including any recent or chronic urinary tract infections, periods of immobilization, previous episodes of renal calculi, and medical conditions such as gout, benign prostatic hyperplasia, or hyperparathyroidism. Review the medication history for drugs that may influence stone formation, including allopurinol, analgesics, loop diuretics, or thiazide diuretics. Document the use of long-term indwelling catheters and any past surgical...

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Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
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Micro-computed tomography for analysis of urinary calculi.

James C Williams1, James A McAteer, Andrew P Evan

  • 1Department of Anatomy and Cell Biology, Indiana University School of Medicine, 635 Barnhill Drive MS 5055Y, Indianapolis, IN 46202-5120, USA. jwillia3@iupui.edu

Urological Research
|October 23, 2010
PubMed
Summary

Micro-computed tomography (micro CT) offers a detailed, non-destructive method for analyzing urinary stones. This advanced imaging reveals internal structures and mineral composition, aiding in the study of stone formation and disease.

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Area of Science:

  • Medical Imaging
  • Urology
  • Materials Science

Background:

  • Urinary stones pose a significant health challenge.
  • Understanding stone composition and structure is crucial for effective treatment.
  • Traditional analysis methods can be destructive or limited in scope.

Purpose of the Study:

  • To highlight the utility of micro-computed tomography (micro CT) in urinary stone analysis.
  • To demonstrate how micro CT enhances the understanding of stone morphology and mineralogy.
  • To showcase micro CT as a valuable tool for investigating urinary stone formation.

Main Methods:

  • Micro-computed tomography (micro CT) imaging involves acquiring serial X-ray images of urinary stones.
  • Computational reconstruction generates detailed 3D models of stone internal structure.
  • Non-destructive imaging allows for subsequent traditional analyses.

Main Results:

  • Micro CT provides high-resolution (voxel sizes <5 μm) microscopic views of stone internal features.
  • Detailed information on mineral composition and morphological arrangement is obtained.
  • The technique can analyze multiple stones or fragments simultaneously.

Conclusions:

  • Micro CT is a powerful, non-destructive imaging tool for urinary stone research.
  • It complements traditional methods by guiding targeted analysis and providing unprecedented structural detail.
  • Micro CT aids in differentiating stone types and investigating stone formation processes.