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Int J Prev Med. 2019 Jun 7;10:91. doi: 10.4103/ijpvm.IJPVM_43_18. eCollection 2019.

Sonoelastography for Skin Evaluation in Sclerodermic Patients.

Author information

1
Advanced Diagnostic and Interventional Radiology Research Center, Imam Khomeini Hospital, Tehran Iran.
2
Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran.
3
Department of Biomedical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
4
Department of Rheumatology, Valiasr Hospital, Imam Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran.
5
Deraprtment of Epidemiology, Universal Council of Epidemiology, Universal Scientific Education and Research Network, Tehran, Iran.

Abstract

Background:

The objective of the study is to evaluate elastography ultrasound findings in patients with scleroderma (SS) and to clarify the effectiveness of elastosonography to differentiate scleroderma lesions from any skin lesion considering tissue elasticity.

Methods:

Thirty-six SS patients definite diagnosis of systemic sclerosis according to American College of Rheumatology criteria and 36 healthy subjects were enrolled. Volar aspect of the middle forearm and arm in addition to the dorsal aspect of the fingers were evaluated by sonoelastography. The RGB (red, green, blue) image is a three-dimensional matrix. A color image RGB is an M × N × 3 array of color pixels. The total pixels, total blue pixels, and blue index compared between SS cases and controls.

Results:

Mean age of patients was 41.3 ± 10.3 years and mean age of controls was 39.8 ± 9.3 years. Mean-modified Rodnan skin score of the whole body was 11.9 and mean duration of disease was 6.2 years. Mean total blue pixels in the arm were significantly different between cases and controls. Mean total image pixels, total blue pixels, and blue index in the forearm were significantly different between cases and controls. Elastography findings in the finger were not significantly different between cases and controls.

Conclusions:

Sonoelastography could be used for evaluating skin of forearm in sclerodermic cases which will be helpful for disease evaluation in clinical course.

KEYWORDS:

Elasticity imaging techniques; scleroderma; skin

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