Kwon DR, Park GY. Diagnostic value of real-time sonoelastography in congenital muscular torticollis.
JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2012;
31:721-727. [PMID:
22535719 DOI:
10.7863/jum.2012.31.5.721]
[Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVES
The purpose of this study was to evaluate the possible use of real-time sonoelastography in infants with congenital muscular torticollis for predicting treatment outcomes.
METHODS
The study included 20 infants with a sternocleidomastoid muscle thickness of greater than 10 mm, a sonoelastographic score of 4, and involvement of the entire length of the muscle (group 1) and 30 infants with a sternocleidomastoid muscle thickness of less than 10 mm, a sonoelastographic score of 3, and involvement of only part of the muscle (group 2). A physiatrist performed B-mode sonography and sonoelastography together, measured the thickness of the sternocleidomastoid muscle, and calculated the cross-sectional area of the involved muscle in both groups. On color scale sonoelastography, the sonoelastographic score of the sternocleidomastoid muscle was graded from 1 (purple to green: soft) to 4 (red: stiff), and the color histogram of the muscle was subsequently analyzed.
RESULTS
The thickness and cross-sectional area of the sternocleidomastoid muscles in group 1 were significantly greater than those in group 2 (P = .001). On the color histograms, the median red pixel values in group 1 were significantly greater than those in group 2 (P = .001). In group 1, the mass in the affected muscle completely disappeared in 16 infants (80%), and a residual mass was detected in 4 (20%) on B-mode sonography at the final outcome. However, in group 2, the mass in the affected sternocleidomastoid muscle completely disappeared in all of the infants.
CONCLUSIONS
These findings suggest that real-time sonoelastography, although an ancillary technique to conventional sonography, may predict treatment outcomes of congenital muscular torticollis.
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