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New Ultrasound Tech Boosts Sjögren’s Syndrome Diagnosis

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The Need for Advanced Imaging in Sjögren’s Syndrome

Primary Sjögren’s syndrome ultrasound imaging has traditionally focused on identifying morphological changes in the salivary glands. However, standard grayscale imaging sometimes lacks the precision needed for early detection. Recently, new ultrasound techniques have allowed doctors to measure tissue stiffness and viscosity directly. This quantitative approach offers a more objective assessment than standard visual scoring methods used in the past. Clinicians in India and worldwide are now exploring these tools to improve diagnostic reliability.

Advances in Sjögren’s Syndrome Ultrasound

A recent prospective study evaluated 124 participants to test the efficacy of viscoelasticity imaging. Researchers measured mean elasticity (Emean) and mean viscosity (Vmean) in both the parotid and submandibular glands. They found that patients with primary Sjögren’s syndrome (pSS) had significantly higher values compared to healthy individuals. Furthermore, these parameters correlated strongly with the established OMERACT scoring system used by rheumatologists. Consequently, measuring both stiffness and viscosity provides a clearer picture of glandular health.

Combining Elasticity and Viscosity for Better Care

Diagnostic accuracy improves significantly when clinicians combine elasticity and viscosity data. The study reported that this combination reached a superior area under the curve (AUC) compared to using single metrics. Specifically, submandibular gland measurements showed high potential for early disease detection. Additionally, this non-invasive tool may eventually reduce the need for painful minor salivary gland biopsies. Therefore, integrating viscoelasticity into routine practice could streamline the diagnostic pathway for suspected autoimmune conditions.

Frequently Asked Questions

Q1: Why is viscosity important in Sjögren’s syndrome ultrasound?

Viscosity provides unique data about the fluid-like properties of the salivary gland tissue. This specific measurement helps identify inflammation and structural changes more accurately than stiffness alone.

Q2: How does this method compare to the OMERACT system?

It provides quantitative measurements that support the visual OMERACT scores. This adds a layer of objective data for more reliable and repeatable diagnoses across different clinics.

References

  1. Su HZ et al. Assessment of salivary gland involvement in primary Sjögren’s syndrome using ultrasound viscoelasticity imaging. Eur Radiol. 2026 Apr 01. doi: 10.1007/s00330-026-12484-w. PMID: 41920321.
  2. Inanc N et al. Novel OMERACT Ultrasound Scoring System for Salivary Gland Changes in Patients With Sjögren Syndrome Is Associated With MRI and Salivary Flow Rates. Rheumatology. 2024.
  3. Xu Z et al. Combination of ultra-micro angiography and sound touch elastography for diagnosis of primary Sjögren’s syndrome. Quant Imaging Med Surg. 2023.