Digital Thermography of the Fingers and Toes in Raynaud's Phenomenon.
10.3346/jkms.2014.29.4.502
- Author:
Mie Jin LIM
1
;
Seong Ryul KWON
;
Kyong Hee JUNG
;
Kowoon JOO
;
Shin Goo PARK
;
Won PARK
Author Information
1. Division of Rheumatology, Department of Internal Medicine, Inha University Hospital, Incheon, Korea. parkwon@inha.ac.kr
- Publication Type:Original Article ; Research Support, Non-U.S. Gov't
- Keywords:
Raynaud Disease;
Thermography;
Digital Thermography;
Temperature
- MeSH:
Adult;
Diagnosis, Differential;
Female;
Fingers/*physiology;
Humans;
Male;
Middle Aged;
ROC Curve;
Raynaud Disease/*diagnosis;
Sensitivity and Specificity;
Skin Temperature;
*Thermography;
Toes/*physiology
- From:Journal of Korean Medical Science
2014;29(4):502-506
- CountryRepublic of Korea
- Language:English
-
Abstract:
The aim of this study was to determine whether skin temperature measurement by digital thermography on hands and feet is useful for diagnosis of Raynaud's phenomenon (RP). Fifty-seven patients with RP (primary RP, n = 33; secondary RP, n = 24) and 146 healthy volunteers were recruited. After acclimation to room temperature for 30 min, thermal imaging of palmar aspect of hands and dorsal aspect of feet were taken. Temperature differences between palm (center) and the coolest finger and temperature differences between foot dorsum (center) and first toe significantly differed between patients and controls. The area under curve analysis showed that temperature difference of the coolest finger (cutoff value: 2.2degrees C) differentiated RP patients from controls (sensitivity/specificity: 67/60%, respectively). Temperature differences of first toe (cutoff value: 3.11degrees C) also discriminated RP patients (sensitivity/specificity: about 73/66%, respectively). A combination of thermographic assessment of the coolest finger and first toe was highly effective in men (sensitivity/specificity : about 88/60%, respectively) while thermographic assessment of first toe was solely sufficient for women (sensitivity/specificity: about 74/68%, respectively). Thermographic assessment of the coolest finger and first toe is useful for diagnosing RP. In women, thermography of first toe is highly recommended.
