Normalized methodology for medical infrared imaging

Vargas, J.V.C.; Brioschi, Marcos Leal; Dias, Fernando; Parolin, Mônica Beatriz; Mulinari‐Brenner, Fabiane; Ordóñez, Juan C.; Colman, Daniel R.

doi:10.1016/j.infrared.2008.11.003

Cited by 52 publications

(44 citation statements)

References 23 publications

(22 reference statements)

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“…Its principle of image formation is based on the capture and transformation of infrared radiation emitted by the human skin, into images that reflect the microcirculatory dynamics of the skin surface. 1,4,5,7,8,10,11,15,16,[19][20][21][22][23][24][25][26] In spite of various articles having approached the thermographic examination as a promising method in dentistry, 8,[10][11][12]15,16,21,27 in the world literature, up to now, there is no standardization as regards the evaluation of thermograms of the face.…”

Section: Discussionmentioning

confidence: 99%

A new evaluation of heat distribution on facial skin surface by infrared thermography

Haddad¹,

Brioschi²,

Baladi³

et al. 2016

Dentomaxillofacial Radiology

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Objective: The aim of this study was to identify the facial areas defined by thermal gradient, in individuals compatible with the pattern of normality, and to quantify and describe them anatomically. Methods: The sample consisted of 161 volunteers, of both genders, aged between 26 and 84 years (63 ± 15 years). Results:The results demonstrated that the thermal gradient areas suggested for the study were present in at least 95% of the thermograms evaluated and that there is significant difference in temperature between the genders, racial group and variables "odontalgia", "dental prothesis" and "history of migraine" (p , 0.05). Moreover, there was no statistically significant difference in the absolute temperatures between ages, and right and left sides of the face, in individuals compatible with the pattern of normality (DT 5 0.11°C). Conclusions: The authors concluded that according to the suggested areas of thermal gradients, these were present in at least 95% of all the thermograms evaluated, and the areas of high intensity found in the face were medial palpebral commissure, labial commissure, temporal, supratrochlear and external acoustic meatus, whereas the points of low intensity were inferior labial, lateral palpebral commissure and nasolabial.

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Section: Discussionmentioning

confidence: 99%

A new evaluation of heat distribution on facial skin surface by infrared thermography

Haddad¹,

Brioschi²,

Baladi³

et al. 2016

Dentomaxillofacial Radiology

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“…It is worthwhile to mention that in most studies the infrared image analysis is subjective, that is, the location for the evaluation of the muscle temperature is randomly determined 6,8,14,16,28 , while others studies make no reference to the way the analysis was carried out 5,29,30 . Furthermore, no standardization of specific areas for image analysis was found in other studies that measure facial temperature 31,32 .…”

Section: Discussionmentioning

confidence: 99%

Intra and inter-rater reliability of infrared image analysis of masticatory and upper trapezius muscles in women with and without temporomandibular disorder

Costa¹,

Dibai‐Filho²,

Packer³

et al. 2013

Braz. J. Phys. Ther.

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| Background: Infrared thermography is an aid tool that can be used to evaluate several pathologies given its efficiency in analyzing the distribution of skin surface temperature. Objectives: To propose two forms of infrared image analysis of the masticatory and upper trapezius muscles, and to determine the intra and inter-rater reliability of both forms of analysis. Method: Infrared images of masticatory and upper trapezius muscles of 64 female volunteers with and without temporomandibular disorder (TMD) were collected. Two raters performed the infrared image analysis, which occurred in two ways: temperature measurement of the muscle length and in central portion of the muscle. The Intraclass Correlation Coefficient (ICC) was used to determine the intra and inter-rater reliability. Results: The ICC showed excellent intra and inter-rater values for both measurements: temperature measurement of the muscle length (TMD group, intra-rater, ICC ranged from 0.996 to 0.999, inter-rater, ICC ranged from 0.992 to 0.999; control group, intra-rater, ICC ranged from 0.993 to 0.998, inter-rater, ICC ranged from 0.990 to 0.998), and temperature measurement of the central portion of the muscle (TMD group, intra-rater, ICC ranged from 0.981 to 0.998, inter-rater, ICC ranged from 0.971 to 0.998; control group, intra-rater, ICC ranged from 0.887 to 0.996, inter-rater, ICC ranged from 0.852 to 0.996). Conclusion: The results indicated that temperature measurements of the masticatory and upper trapezius muscles carried out by the analysis of the muscle length and central portion yielded excellent intra and inter-rater reliability.Keywords: physical therapy; temporomandibular joint disorder; reliability; thermography; skin temperature. HOW TO THE CITE ARTICLECosta ACS, Dibai Filho AV, Packer AC, Rodrigues-Bigaton D. Intra and inter-rater reliability of infrared image analysis of masticatory and upper trapezius muscles in women with and without temporomandibular disorder. Braz J Phys Ther. 2013 JanFeb; 17(1): 24-31. http://dx.doi.org/10.1590/S1413-35552012005000058 RESUMO| Contextualização: A termografia infravermelha vem sendo utilizada como instrumento auxiliar na avaliação de patologias diversas, dada a sua eficiência na investigação da distribuição da temperatura superficial cutânea. Objetivos: Propor duas formas de análise das imagens infravermelhas dos músculos mastigatórios e trapézio superior e determinar a confiabilidade intra e interexaminador dessas duas formas de análise. Método: Foram coletadas imagens infravermelhas dos músculos mastigatórios e trapézio superior de 64 voluntárias do gênero feminino, com e sem disfunção temporomandibular (DTM). A análise das imagens infravermelhas ocorreu de duas formas: mensuração da temperatura da extensão do músculo e do centro do músculo, sendo realizada por dois examinadores. A confiabilidade intra e interexaminador foi verificada por meio do Coeficiente de Correlação Intraclasse (CCI). Resultados: Os valores do CCI intra e interexaminador foram considerados excelentes em a...

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“…This thermometer measures temperature values of the eardrum and the surrounding tissues, the location most frequently indicated for measuring body temperature owing to its proximity to the hypothalamus and the perfusion of the arterial labyrinth. 17 For precise evaluation of the ROIs, the thermographs ( Figure 2) were superimposed on the digital photographs using dedicated software (Reporter ® v. 8.5-SP3 Professional Edition and QuickReport ® v. 1.2; FLIR Systems Inc., Wilsonville, OR). The standardized reference points of the superimposition were midpoint of the median sagittal plane between the chin and the hyoid bone, the lowest portion of the earlobe and the apex of the nasal pyramid.…”

Section: Measurement Proceduresmentioning

confidence: 99%

“…The standardized reference points of the superimposition were midpoint of the median sagittal plane between the chin and the hyoid bone, the lowest portion of the earlobe and the apex of the nasal pyramid. The mean absolute temperatures (T) were averaged according to the landmarks (ROIs) recorded on photographic images, and the normalized temperature (u) 17 of each ROI was calculated individually. Interpretation of the infrared camera reading was performed using a dimensionless temperature (u), which combines the measured local temperature with the body (T b ) and ambient temperatures (T ' ), according to the following equation:…”

Section: Measurement Proceduresmentioning

confidence: 99%

Thermographic characterization of masticatory muscle regions in volunteers with and without myogenous temporomandibular disorder: preliminary results

Haddad¹,

Brioschi²,

Vardasca³

et al. 2014

Dentomaxillofacial Radiology

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Objectives: This study aims to conduct a non-invasive measurement of the cutaneous temperature of selected masticatory muscle regions of volunteers with and without myogenous temporomandibular disorder (TMD), using infrared thermography. Methods: 23 females (10 myogenous TMD volunteers and 13 controls) were recruited and studied. The temperature at the surface of the facial area over the anterior temporalis and masseter muscles was assessed by medical thermography, using regional lateral views and clinical examination. Results: The temperature levels measured at the masseter and anterior temporalis muscle regions in myogenous TMD volunteers (32.85 ± 0.85 and 34.37 ± 0.64 ºC, respectively) were significantly lower (p , 0.05) than those measured in controls (33.49 ± 0.92 and 34.78 ± 0.44 ºC, respectively). Medical infrared imaging indicated a mean difference of 1.4 ºC between the masseter and anterior temporalis regions. Analysis of the comparison between the absolute and normalized mean temperatures was performed using the pairwise comparison of receiver operating characteristic curves, and no statistically significant difference was observed (p . 0.05). The sensitivity and specificity of the thermographic assessment for the masseter region was of 70% and 73%, respectively and for the anterior temporalis region was of 80% and 62%, respectively. Conclusions: This method of evaluating masticatory muscle regions of this preliminary study seems to indicate that it can be used as an aid in complimentary diagnosing of TMDs. Dentomaxillofacial Radiology (2014) 43, 20130440. doi: 10.1259 Cite this article as: Haddad DS, Brioschi ML, Vardasca R, Weber M, Crosato EM, Arita ES. Thermographic characterization of masticatory muscle regions in volunteers with and without myogenous temporomandibular disorder: preliminary results.

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Normalized methodology for medical infrared imaging

Cited by 52 publications

References 23 publications

A new evaluation of heat distribution on facial skin surface by infrared thermography

A new evaluation of heat distribution on facial skin surface by infrared thermography

Intra and inter-rater reliability of infrared image analysis of masticatory and upper trapezius muscles in women with and without temporomandibular disorder

Thermographic characterization of masticatory muscle regions in volunteers with and without myogenous temporomandibular disorder: preliminary results

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