| Title: | OMERACT GCA phantom project : validation of a 3D-printed ultrasound training phantom for diagnosis of giant cell arteritis |
|---|
| Authors: | ID Schremmer, Tobias (Author)
ID Dejaco, Christian (Author)
ID Recker, Florian (Author)
ID Aschwanden, Markus J. (Author)
ID Boumans, Dennis (Author)
ID Bruyn, George A. W . (Author)
ID Chrysidis, Stavros (Author)
ID Daikeler, Thomas (Author)
ID Dalsgaard Nielsen, Berit (Author)
ID De Miguel, Eugenio (Author)
ID Hočevar, Alojzija (Author), et al. |
|---|
| Files: |  PDF - Presentation file, download (1,08 MB)
MD5: C21AD30029E8B7CC7B415437E8B414DB
 URL - Source URL, visit https://rmdopen.bmj.com/content/11/1/e005316
|
|---|
| Language: | English |
|---|
| Typology: | 1.01 - Original Scientific Article |
|---|
| Organization: |  UKC LJ - Ljubljana University Medical Centre
|
|---|
| Abstract: | Objective: Ultrasonography is crucial for diagnosing giant cell arteritis (GCA); however, training opportunities are rare. This study tested the reliability of ultrasonography findings and measurements of the intima-media thickness (IMT) among ultrasonography experts by using phantoms of the axillary (AA) and temporal arteries (TA) created with high-resolution 3D printing. Methods: Twenty-eight participants from 12 European countries received eight sets of phantoms of the AA and the superficial TA (including common, frontal and parietal branches), which were examined in a blinded fashion according to a predefined protocol and evaluated based on Outcome Measures in Rheumatology (OMERACT) GCA ultrasound definitions. Due to difficulties with the delineation of the intima-media complex, the parietal branch of the phantoms was modified, and a second round was conducted. The IMT was measured, and phantoms were classified as normal or vasculitic. Results: In both rounds, the phantoms were correctly classified as normal/abnormal in >81% of cases yielding a Fleiss' kappa of 0.80 (95% CI 0.78 to 0.81) in round 1 and 0.74 (95% CI 0.72 to 0.75) in round 2. IMT measurements revealed an intraclass correlation coefficient (ICC 1.1) of 0.98 (95% CI 0.98 to 0.99) in both rounds. Intrarater reliability was good with a median Cohens Kappa of 0.83 and median ICC of 0.78. Conclusion: The study demonstrated high reliability among ultrasound experts in applying the OMERACT ultrasound definitions for GCA and in measuring the IMT using a 3D-printed phantom of the AA and TA. This phantom could assist clinicians in training to assess the large arteries of patients with suspected or established GCA. |
|---|
| Keywords: | giant cell arteritis, ultrasonography, vasculitis |
|---|
| Publication status: | Published |
|---|
| Publication version: | Version of Record |
|---|
| Year of publishing: | 2025 |
|---|
| Number of pages: | str. 1-9 |
|---|
| Numbering: | Vol. 11, iss. 1, [article no.] e005316 |
|---|
| PID: | 20.500.12556/DiRROS-29620  |
|---|
| UDC: | 616-002 |
|---|
| ISSN on article: | 2056-5933 |
|---|
| DOI: | 10.1136/rmdopen-2024-005316 |
|---|
| COBISS.SI-ID: | 277578243 |
|---|
| Note: |
Nasl. z nasl. zaslona;
Opis vira z dne 8. 5. 2026;
|
|---|
| Publication date in DiRROS: | 01.06.2026 |
|---|
| Views: | 24 |
|---|
| Downloads: | 13 |
|---|
| Metadata: |    |
|---|
|
:
|
Copy citation |
|---|
| | | | Share: |  |
|---|
Hover the mouse pointer over a document title to show the abstract or click
on the title to get all document metadata. |
