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Related Concept Videos

Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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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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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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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...
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Updated: May 3, 2026

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Three-dimensional computed tomography planning improves percutaneous stone surgery.

Marianne Brehmer1, Mats O Beckman, Anders Magnusson

  • 11 Institution of Oncology and Pathology.

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|February 14, 2014
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Summary
This summary is machine-generated.

Three-dimensional computed tomography (3D-CT) planning significantly improved percutaneous nephrolithotripsy (PCNL) outcomes for complex kidney stones. This method optimized surgical access, leading to higher stone-free rates and fewer access punctures.

Keywords:
3D reconstructionCTPCNLrenal stones

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Area of Science:

  • Urology
  • Medical Imaging
  • Surgical Planning

Background:

  • Percutaneous nephrolithotripsy (PCNL) is the standard treatment for renal stones exceeding 2 cm.
  • Optimizing PCNL requires meticulous preoperative planning.

Purpose of the Study:

  • To evaluate the impact of three-dimensional computed tomography (3D-CT) planning on PCNL access route selection and treatment outcomes.
  • To assess the efficacy of 3D-CT in managing complex renal stone cases.

Main Methods:

  • A prospective study involving 35 patients undergoing PCNL.
  • Preoperative decision algorithms for access route and treatment were recorded before and after 3D-CT planning.

Main Results:

  • 3D-CT planning altered the access plan in 63% of patients (22/35), with 24 patients (69%) achieving stone-free status after a single PCNL session.
  • Stone-free status with a single access track was achieved in 63% of patients (22/35).
  • 3D-CT planning influenced the surgical approach in 76% of stone-free patients.

Conclusions:

  • Preoperative 3D-CT planning significantly impacts the surgical procedure for complex renal stones.
  • This planning method leads to a reduced number of access punctures and improved treatment outcomes in PCNL.