Angiography, Ultrasound, and Thermography in the Study of Peripheral Vascular Disease

Soulen, Renate L.; Lapayowker, Marc S.; Tyson, R. Robert; Korangy, Amile A.

doi:10.1148/105.1.5

Cited by 24 publications

(10 citation statements)

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“…18 One level 3 study reported the intriguing finding that about one half of patients with arterial disease confined to the femoropopliteal segment had unilaterally warm knees in the same limb, whereas no patient with disease in the aortoiliac segment had warm knees. 25 Subsequent studies, mostly case series that sometimes included infrared thermography, [48][49][50][51] have confirmed this finding. Presumably, femoropopliteal occlusions induce collateral vessels to develop just beneath the skin surface around the knee, thus raising its temperature.…”

Section: Distribution Of Vascular Diseasementioning

confidence: 84%

“…In a different study, 12 the finding of a foot cooler than the ipsilateral calf was unhelpful (LR+=1.2-1.5), but this is not surprising because the cutaneous blood flow, the main determinant of skin surface temperature, often diminishes toward the feet to conserve body heat, causing the toes of normal extremities to be 2°C to 6°C cooler than the ipsilateral groin. 48 A unilaterally cold foot, however, is abnormal and usually indicates arterial disease. 15 The presence of color abnormalities (pale, red, or blue color) were weak predictors of disease (LR+=1.6-2.8), but in both of the studies that investigated this finding, 12,15 foot discoloration added nothing to the clinical prediction after multivariate analysis.…”

Section: Other Findingsmentioning

confidence: 99%

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Physical Examination and Chronic Lower-Extremity Ischemia

McGee

1998

Arch Intern Med

116

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Section: Distribution Of Vascular Diseasementioning

confidence: 84%

Section: Other Findingsmentioning

confidence: 99%

Physical Examination and Chronic Lower-Extremity Ischemia

McGee

1998

Arch Intern Med

116

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“…Skin thermography is an objective and non-invasive procedure that measures temperature distribution using a thermal imager that receives and processes the infrared radiation emitted by the body surface [10]. The scientific use of thermography began in medical research, in which it has been used to diagnose vascular disease [11], inflammation [12], tumors [6,13], metabolic disorders and abnormalities in body temperature [12]. In the field of physical activity and sports, some studies have used the technique to study differences in thermogenesis between young and elderly people [14], the effect of exercise on hand temperature [8], and the distribution and variation of T SK during progressive exercise [4].…”

Section: Introductionmentioning

confidence: 99%

Time required to stabilize thermographic images at rest

Marins¹,

Moreira²,

Cano³

et al. 2014

Infrared Physics & Technology

106

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h i g h l i g h t sStandardizing the acclimatization time is crucial for a right T SK assessment by IRT. Time for reaching T SK balance in rest is different for young men and women. 10 min is enough for acclimatization when the external temperatures are not extreme. a r t i c l e i n f oArticle history: Received 6 November 2012 Available online 3 March 2014Keywords: Thermoregulation Thermography Thermal imaging Temperature a b s t r a c t Thermography for scientific research and practical purposes requires a series of procedures to obtain images that should be standardized; one of the most important is the time required for acclimatization in the controlled environment. Thus, the objective of this study was to identify the appropriate acclimatization time in rest to reach a thermal balance on young people skin. Forty-four subjects participated in the study, 18 men (22.3 ± 3.1 years) and 26 women (21.7 ± 2.5 years). Thermographic images were collected using a thermal imager (Fluke Ò ), totaling 44 images over a period of 20 min. The skin temperature (T SK ) was measured at the point of examination which included the 0 min, 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20. The body regions of interest (ROI) analyzed included the hands, forearms, arms, thighs, legs, chest and abdomen. We used the Friedman test with post hoc Dunn's in order to establish the time at rest required to obtain a T SK balance and the Mann-Whitney test was used to compare age, BMI, body fat percentage and temperature variations between men and women, considering always a significance level of p < 0.05. Results showed that women had significantly higher temperature variations than men (p < 0.01) along the time. In men, only the body region of the abdomen obtained a significant variance (p < 0.05) on the analyzed period, both in the anterior and posterior part. In women, the anterior abdomen and thighs, and the posterior part of the hands, forearms and abdomen showed significant differences (p < 0.05). Based on our results, it can be concluded that the time in rest condition required reaching a T SK balance in young men and women is variable, but for whole body analysis it is recommended at least 10 min for both sexes.

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“…The temperature of the most distal part of the lower extremity is usually lower for 2°-6°. 26,46 Temperature is symmetrically distributed, 47,48 with the difference between the same areas of the right and left lower extremities <0.2°C-0.3°C. 48,49 Due to the relatively lower blood supply, the areas adjacent to bone structures, such as patella and tibia, are cooler compared to the areas overlying calf and thigh muscles (Figure 2).…”

Section: Infrared Thermography: the Principlementioning

confidence: 99%

“…Infrared thermography has also been suggested to help in follow-up after orthopedic and plastic surgery. 24,25 The first purposeful use of the infrared thermography to evaluate patients with suspected venous thrombosis was reported by Soulen et al 26 This study aims to review the published evidence on infrared thermography as a possible alternative tool in DVT diagnostics.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of infrared thermography in the diagnosis of deep vein thrombosis: an evidence-based review

Shaydakov¹,

Díaz²

2017

JVD

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Venous thromboembolism is a serious medical, social, and economic problem. A number of treatment options exist to decrease mortality and morbidity in patients with deep vein thrombosis (DVT). An accurate and timely diagnosis of this condition is important to improve immediate and long-term prognosis. The standard diagnostic algorithm implying assessment of the clinical probability of the disease, d-dimer test, and venous duplex ultrasound is not optimal. Infrared thermography is a relatively new diagnostic modality under clinical investigation for various medical conditions. This study aims to review the published evidence on infrared thermography as a possible alternative tool in DVT diagnosis. The authors conclude that infrared thermography is still an experimental diagnostic tool for patients with DVT, and requires more clinical research evidence to support theoretical advantages and suggest a possible clinical application.

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Angiography, Ultrasound, and Thermography in the Study of Peripheral Vascular Disease

Cited by 24 publications

References 0 publications

Physical Examination and Chronic Lower-Extremity Ischemia

Physical Examination and Chronic Lower-Extremity Ischemia

Time required to stabilize thermographic images at rest

Effectiveness of infrared thermography in the diagnosis of deep vein thrombosis: an evidence-based review

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