UNASSIGNED: Objectives Shear-wave sonoelastography is expected to facilitate low operator dependency, high reproducibility and quantitative evaluation, whereas there are few reports on available normative values of in vivo tissue in head and neck fields. The purpose of this study was to examine the reliabilities on measuring @entity3358 using shear-wave sonoelastography and to clarify normal values of @entity7871 in healthy volunteers. Methods Phantoms with known @entity3358 ranging from 20 to 140   kPa were scanned with shear-wave sonoelastography, and inter- and intraoperator reliabilities were examined compared with strain sonoelastography. The relationships between the actual and measured @entity3358 were analyzed. The @entity7871 in 30 healthy volunteers was measured using shear-wave sonoelastography. RESULTS: The inter- and intraoperator intraclass correlation coefficients were almost perfect. Strong correlations were seen between the actual and measured @entity3358 . The mean @entity3358 of the masseter muscles in healthy volunteers was 42.82        5.56   kPa at rest and 53.36        8.46   kPa during jaw clenching. CONCLUSIONS: The @entity3358 measured with shear-wave sonoelastography showed high-level reliability. Shear-wave sonoelastography may be suitable for evaluation of the masseter muscles.

Shear-wave sonoelastography for assessing XXXX in comparison with strain sonoelastography: study with phantoms and healthy volunteers.

@entity7871 :: ('MESH:D014313', 'Disease') :: ['masseter muscle hardness'] @entity3358 :: ('MESH:D018804', 'Disease') :: ['hardness']
@entity7871 :: (MESH:D014313,Disease) :: ['masseter muscle hardness']
