A Novel Ultrasound Finding for the Diagnosis of Giant Cell Arteritis: Comparison With Temporal Artery Biopsy Findings
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View abstract on PubMed
Summary
This summary is machine-generated.The string of beads sign improves ultrasound diagnosis of giant cell arteritis (GCA). Combining this sign with the hypoechoic halo enhances diagnostic accuracy for GCA.
Area Of Science
- Vascular Ultrasound
- Rheumatology
- Medical Imaging
Background
- Hypoechoic halo on ultrasound is a common finding in giant cell arteritis (GCA).
- Arteriosclerosis can cause false positive hypoechoic halo findings, complicating GCA diagnosis.
- Segmental distribution of GCA lesions is crucial for accurate diagnosis.
Purpose Of The Study
- To evaluate the diagnostic ability of the "string of beads" sign in identifying GCA.
- To compare the diagnostic performance of hypoechoic halo alone versus combined with the string of beads sign for GCA.
Main Methods
- Focusing on the segmental distribution of GCA lesions.
- Defining the "string of beads" sign as luminal irregularity in long-axis ultrasound images.
- Assessing the diagnostic accuracy using C-statistic.
Main Results
- The combined use of hypoechoic halo and the string of beads sign achieved a C-statistic of 1.00.
- Hypoechoic halo alone had a C-statistic of 0.89.
- The string of beads sign significantly improved diagnostic ability compared to hypoechoic halo alone.
Conclusions
- Adding the string of beads sign to the hypoechoic halo improves ultrasound diagnostic ability for GCA.
- The "string of beads" sign is a valuable indicator for GCA diagnosis.
- Accurate GCA diagnosis can be achieved by integrating segmental lesion distribution and specific ultrasound signs.
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