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Advanced imaging like ultrasound and dual-energy CT (DECT) significantly improve diagnosis and monitoring of crystal arthritis, including gout and calcium pyrophosphate deposition (CPPD) disease, surpassing conventional radiography limitations.

Keywords:
calcium pyrophosphate depositiondual-energy computed tomographygoutultrasound

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Area of Science:

  • Rheumatology
  • Medical Imaging
  • Crystal Arthropathies

Background:

  • Gout and CPPD disease are common crystal-induced arthropathies.
  • Accurate crystal identification is crucial for diagnosis, prognosis, and monitoring.
  • Conventional radiography has limited sensitivity for these conditions.

Purpose of the Study:

  • To review the application of advanced imaging techniques in crystal-induced arthropathies.
  • To highlight the diagnostic and monitoring capabilities of ultrasound and DECT.
  • To discuss the recognized role of these techniques in current guidelines.

Main Methods:

  • Narrative review of current literature.
  • Focus on ultrasound and dual-energy computed tomography (DECT).
  • Evaluation of their role in gout and CPPD disease diagnosis and management.

Main Results:

  • Ultrasound shows well-defined, sensitive lesions for monosodium urate deposition in gout.
  • DECT allows direct quantification of urate deposits and discrimination of CPPD crystals.
  • Established scoring for ultrasound lesions in CPPD disease exists.

Conclusions:

  • Advanced imaging, particularly ultrasound and DECT, offers superior sensitivity and specificity over conventional radiography.
  • These techniques are integral to modern diagnostic criteria and management recommendations for crystal arthritis.
  • Further integration of ultrasound and DECT is essential for comprehensive patient care.