Shear Wave Elastography for Assessment of Muscular Abnormalities Related to Systemic Sclerosis.
Acad Radiol
; 28(8): 1118-1124, 2021 08.
Article
in En
| MEDLINE
| ID: mdl-32527706
ABSTRACT
RATIONALE AND OBJECTIVES:
To assess muscular abnormalities related to systemic sclerosis (SSc) using shear wave elastography and correlate results with those of clinical tests. MATERIALS ANDMETHODS:
We evaluated 55 patients (mean age 50.4 years; range 18-88; 34 female) with SSc before treatment and choose muscle groups based on cutaneous involvement and functional impairment [forearms (9); thighs (41); thenar/hypothenar (5)]. We performed shear wave elastography in two orientations to access heterogeneity using virtual touch IQ and mean shear wave velocity values (SWV) and measured skin and fascia thickness. We compared SWVs to the modified Rodnan skin score (mRSS). Twenty-two healthy controls (mean age 52.0; range 19-88; 7 female) underwent the same protocol.RESULTS:
SWV pattern analysis (homogeneous vs heterogeneous) detected SSc with sensitivity/specificity/negative predictive value/positive predictive value0.79/0.81/0.91/0.62 in transverse and 0.75/0.18/0.91/0.56 in longitudinal orientation. In patients we found poor correlation between SWVs and mRSS but a cutoff of mRSSEâ¯=â¯20 separated them significantly (p < 0.01). Skin and muscle fascia were significantly thicker in patients vs. controls (p < 0.001).CONCLUSION:
SSc involves more than increased skin and fascial thickness which is not fully represented by mRSS. Elasticity differs in muscles with and without SSc. The former shows higher SWV and increased heterogeneity in transversal planes of muscular fibers.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Scleroderma, Systemic
/
Elasticity Imaging Techniques
Type of study:
Diagnostic_studies
/
Guideline
/
Prognostic_studies
Limits:
Female
/
Humans
/
Middle aged
Language:
En
Journal:
Acad Radiol
Journal subject:
RADIOLOGIA
Year:
2021
Document type:
Article