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Related Experiment Video

Updated: Apr 7, 2026

Automated Joint Space Detection Improves Bone Segmentation Accuracy
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Dual‑Energy CT in Inflammatory Arthritis: A Comprehensive Review.

Balakrishnan Navaneethakrishnan1, Mahabaleshwar Mamadapur2, Ponnien Selvan K N3

  • 1Rheumatology, Avinash Hospitals, Chennai, IND.

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|April 6, 2026
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Summary

Dual-energy CT (DECT) aids in diagnosing inflammatory and crystal-associated arthropathies when other imaging is unclear. It excels in gout diagnosis and monitoring, and serves as a valuable adjunct in other arthropathies like CPPD.

Keywords:
calcium pyrophosphate deposition disease (cppd)crystal arthropathydual-energy ctosteoarthritisrheumatoid arthritis

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Area of Science:

  • Rheumatology
  • Radiology
  • Medical Imaging

Background:

  • Inflammatory arthritis and crystal-associated arthropathies share overlapping symptoms, complicating diagnosis with conventional imaging.
  • Dual-energy computed tomography (DECT) offers advanced material-specific characterization beyond standard CT.
  • DECT can differentiate various crystal deposits and has applications beyond crystal detection.

Purpose of the Study:

  • To review the principles, workflow, interpretation, and clinical utility of DECT in various arthropathies.
  • To synthesize evidence on DECT's role in gout, CPPD, RA, PsA, axSpA, and OA.
  • To provide a clinically oriented perspective on DECT's practical applications.

Main Methods:

  • Narrative review of curated PubMed-indexed studies.
  • Qualitative evidence synthesis focusing on clinical utility.
  • Examination of DECT principles, pitfalls, and applications across specific arthropathies.

Main Results:

  • DECT is most established for gout, enabling non-invasive crystal detection, burden mapping, and therapy monitoring.
  • In CPPD, DECT is an adjunct for inconclusive radiographic or ultrasound findings.
  • For RA and PsA, DECT applications are exploratory; MRI remains the inflammatory assessment standard. In axSpA, DECT aids structural staging. In OA, DECT is for crystal-overlap scenarios.

Conclusions:

  • DECT provides significant clinical value in gout and as an adjunct in CPPD.
  • DECT's utility in RA, PsA, axSpA, and OA is evolving and often adjunctive.
  • Optimal DECT use requires disease-specific, question-driven application within multimodality imaging, with attention to protocols and artifacts.