Automated Segmentation and Temperature Extraction from Thermal Images of Human Hands, Shins and Feet

Gauci, Jean; Falzon, Owen; Camilleri, Kenneth P.; Formosa, Cynthia; Gatt, Alfred; Ellul, Christian; Mizzi, Stephen; Mizzi, Adrian; Cassar, Kevin; Chockalingam, Nachiappan

doi:10.1007/978-3-319-32703-7_55

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…Thermal images obtained were segmented automatically utilizing an algorithm that was specifically developed for this study [25]. The feet were divided into regions so that temperature data could be extracted (Figure 2).…”

Section: Image Acquisition Segmentation Data Extraction and Analysismentioning

confidence: 99%

The identification of higher forefoot temperatures associated with peripheral arterial disease in type 2 diabetes mellitus as detected by thermography

Gatt

Cassar

Falzon

et al. 2018

Primary Care Diabetes

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Contrary to expectations the mean toe and forefoot temperatures in DM patients with PAD is higher than in those with DM only. This unexpected result could be attributed to disruption of noradrenergic vasoconstrictor thermoregulatory mechanisms with resulting increased flow through cutaneous vessels and subsequent increased heat emissivity. These results demonstrate that thermography may have potential in detecting PAD and associated temperature differences.

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Section: Image Acquisition Segmentation Data Extraction and Analysismentioning

confidence: 99%

The identification of higher forefoot temperatures associated with peripheral arterial disease in type 2 diabetes mellitus as detected by thermography

Gatt

Cassar

Falzon

et al. 2018

Primary Care Diabetes

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“…Data extraction was performed by means of a semi-automatic algorithm. In this way, infrared images were first automatically segmented [ 76 ], and each plantar foot was divided into the 11 ROIs described above. Nevertheless, since feet movements occurred, some adjustments every few frames had to be done manually.…”

Section: Methodsmentioning

confidence: 99%

Quantitative Analysis of Real-Time Infrared Thermography for the Assessment of Lumbar Sympathetic Blocks: A Preliminary Study

Cañada-Soriano

Priego-Quesada

Bovaira

et al. 2021

Sensors

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Lumbar sympathetic blocks (LSBs) are commonly performed to treat pain ailments in the lower limbs. LSBs involve injecting local anesthetic around the nerves. The injection is guided by fluoroscopy which is sometimes considered to be insufficiently accurate. The main aim was to analyze the plantar foot skin temperature data acquired while performing LSBs in patients with complex regional pain syndrome (CRPS) affecting the lower limbs. Forty-four LSBs for treating lower limb CRPS in 13 patients were assessed. Pain medicine physicians visualized the infrared thermography (IRT) video in real time and classified the performance depending on the observed thermal changes within the first 4 min. Thirty-two percent of the cases did not register temperature variations after lidocaine was injected, requiring the needle to be relocated. Differences between moments are indicated using the 95% confidence intervals of the differences (CI 95%), the Cohen effect size (ES) and the significance (p value). In successful cases, after injecting lidocaine, increases at minute 7 for the mean (CI 95% (1.4, 2.1 °C), p < 0.001 and ES = 0.5), at minute 5 for maximum temperature (CI 95% (2.3, 3.3 °C), p < 0.001 and ES = 0.6) and at minute 6 for SD (CI 95% (0.2, 0.3 °C), p < 0.001 and ES = 0.5) were observed. The results of our preliminary study showed that the measurement of skin temperature in real time by infrared thermography is valuable for assessing the success of lumbar sympathetic blocks.

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“…Visual images were used for reference purposes only. Thermal data for the toes and forefoot were extracted by a purposely designed algorithm 11 and input in a Microsoft Excel sheet. Since vascular and neuropathic status can vary between feet of the same participant, these were examined and categorized separately.…”

Section: Methodsmentioning

confidence: 99%

The Application of Medical Thermography to Discriminate Neuroischemic Toe Ulceration in the Diabetic Foot

Gatt

Falzon

Cassar

et al. 2018

The International Journal of Lower Extremity Wounds

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Type 2 diabetes mellitus (T2DM) is a medical condition that has reached pandemic proportions, causing a worldwide health crisis according to the International Diabetes Federation. It has long been established that this condition may give rise to several serious complications in the foot, including neuropathy and peripheral arterial disease, which may also coexist as neuroischaemia. 1 The latter are very vulnerable to injury, both from minor and major trauma, and may develop ulcerations, or even amputations. 2 Accordingly, the risk of amputations is very high, 2-4 calling for early identification of at-risk feet. 2,5,6 The need to improve foot screening to improve outcomes remains. In this context, medical infrared imaging, or thermography, has been widely recognized as a noninvasive, potential tool for detecting temperature difference in patients with diabetes in order to detect vascular and neuropathic changes. 7 Normal thermographic patterns have been established for healthy, normal diabetes mellitus, neuropathic, and neuroischemic feet. 8,9 However, we lack data on the utility of thermography in the assessment of neuroischemic ulcers. Should the presence of ulceration provide a distinctive thermal image pattern, this might prove useful as a 783910I JLXXX10.

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Automated Segmentation and Temperature Extraction from Thermal Images of Human Hands, Shins and Feet

Cited by 6 publications

References 8 publications

The identification of higher forefoot temperatures associated with peripheral arterial disease in type 2 diabetes mellitus as detected by thermography

The identification of higher forefoot temperatures associated with peripheral arterial disease in type 2 diabetes mellitus as detected by thermography

Quantitative Analysis of Real-Time Infrared Thermography for the Assessment of Lumbar Sympathetic Blocks: A Preliminary Study

The Application of Medical Thermography to Discriminate Neuroischemic Toe Ulceration in the Diabetic Foot

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