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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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...
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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Related Experiment Video

Updated: Jul 10, 2026

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
07:45

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

Published on: August 4, 2022

Multislice computed tomography for evaluating acetabular defects in revision THA.

Eduardo Garcia-Cimbrelo1, Mar Tapia, Carmen Martin-Hervas

  • 1Department of Orthopedics, Hospital la Paz, Paseo de la Castellana 261, 28046 Madrid, Spain. gcimbrelo@yahoo.es

Clinical Orthopaedics and Related Research
|October 26, 2007
PubMed
Summary

Multislice computed tomography (CT) with metal artifact minimization is more sensitive than plain radiographs for detecting and measuring pelvic osteolysis around failed acetabular cups. This advanced CT technique provides a more accurate assessment of bone defects before revision surgery.

Related Experiment Videos

Last Updated: Jul 10, 2026

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
07:45

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

Published on: August 4, 2022

Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Biomedical Engineering

Background:

  • Acetabular bone defects significantly impact revision surgery outcomes.
  • Plain radiographs offer limited detail regarding osteolytic lesions around failed acetabular components.
  • Accurate assessment of osteolysis is crucial for successful acetabular revision.

Purpose of the Study:

  • To evaluate the efficacy of multislice computed tomography (CT) with metal artifact minimization in quantifying pelvic osteolysis.
  • To compare the sensitivity of CT versus plain radiographs in identifying and measuring bone defects associated with failed acetabular cups.

Main Methods:

  • Sixty hips undergoing acetabular cup revision were assessed using CT prior to surgery.
  • Optimized CT parameters (135 kV, 250 mA, 3 mm slice thickness, 1.5 mm reconstruction index) were used.
  • Metal artifact minimization techniques were applied.
  • Bone defects were classified using Paprosky et al. criteria.

Main Results:

  • CT identified acetabular lysis in 52 hips, compared to 33 hips with radiographs.
  • Osteolysis was most frequently located at the posterior wall and ischium.
  • Radiographs consistently underestimated the extent of lysis, with CT revealing a greater average volumetric bone loss of 37.9 cm³.

Conclusions:

  • Multislice CT with metal artifact minimization significantly outperforms plain radiographs in detecting and quantifying osteolysis around failed acetabular cups.
  • This advanced imaging modality provides more accurate volumetric and locational data for acetabular revision planning.
  • Improved assessment of bone defects using CT can lead to better surgical outcomes in revision arthroplasty.