Rapid vs. delayed infrared responses after ischemia reveal recruitment of different vascular beds

Chang, Ken; Yoon, Stephen P.; Sheth, Niral; Seidel, Miles; Antalek, Matthew; Ahad, James; Darlington, Thomas; Ikeda, Allison K.; Kato, Gregory J.; Ackerman, Hans; Gorbach, Alexander M.

doi:10.1080/17686733.2015.1046677

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…Medical applications of thermography are wide [6] and are most often used to investigate a temperature change revealing a possible pathology. These applications include among others the monitoring of skin temperature [7,8], the detection of breast cancer [9,10], skin cancer [11] and inflammation [12]. In the operating room, thermography was investigated for neurosurgical applications [13,14] and plastic breast reconstruction [4].…”

Section: Introductionmentioning

confidence: 99%

Monitoring of microvascular free flaps following oropharyngeal reconstruction using infrared thermography: first clinical experiences

Just

Chalopin

Unger

et al. 2015

Eur Arch Otorhinolaryngol

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The aim of this study is to investigate static and dynamic infrared (IR) thermography for intra- and postoperative free-flap monitoring following oropharyngeal reconstruction. Sixteen patients with oropharyngeal reconstruction by free radial forearm flap were included in this prospective, clinical study (05/2013-08/2014). Prior ("intraop_pre") and following ("intraop_post") completion of the microvascular anastomoses, IR thermography was performed for intraoperative flap monitoring. Further IR images were acquired one day ("postop_1") and 10 days ("postop_10") after surgery for postoperative flap monitoring. Of the 16, 15 transferred free radial forearm flaps did not show any perfusion failure. A significant decreasing mean temperature difference (∆T: temperature difference between the flap surface and the surrounding tissue in Kelvin) was measured at all investigation points in comparison with the temperature difference at "intraop_pre" (mean values on all patients: ∆T intraop_pre = -2.64 K; ∆T intraop_post = -1.22 K, p < 0.0015; ∆T postop_1 = -0.54 K, p < 0.0001; ∆T postop_10 = -0.58 K, p < 0.0001). Intraoperative dynamic IR thermography showed typical pattern of non-pathological rewarming due to re-established flap perfusion after completion of the microvascular anastomoses. Static and dynamic IR thermography is a promising, objective method for intraoperative and postoperative monitoring of free-flap reconstructions in head and neck surgery and to detect perfusion failure, before macroscopic changes in the tissue surface are obvious. A lack of significant decrease of the temperature difference compared to surrounding tissue following completion of microvascular anastomoses and an atypical rewarming following a thermal challenge are suggestive of flap perfusion failure.

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Section: Introductionmentioning

confidence: 99%

Monitoring of microvascular free flaps following oropharyngeal reconstruction using infrared thermography: first clinical experiences

Just

Chalopin

Unger

et al. 2015

Eur Arch Otorhinolaryngol

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“…Its use is also being investigated in neurosurgical and plastic breast reconstruction. 7,[13][14][15][16][17] Although infrared thermography is an old concept, it has not gained popularity due to its certain limitations. It provides two-dimensional information only pertaining to perforator location and not to entire morphology, unlike CT or magnetic resonance angiography, which give three-dimensional details regarding the entire vascular pattern.…”

Section: Discussionmentioning

confidence: 99%

Role of Infrared Thermography in Planning and Monitoring of Head and Neck Microvascular Flap Reconstruction

Chava,

Agrawal,

Vidya

et al. 2023

Plastic and Reconstructive Surgery - Global Open

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Background: Reconstruction using microvascular free flaps has become the standard of care in head and neck cancer surgery, and their success lies in appropriate planning, adequate revascularization, and early detection of flap compromise so that prompt salvage is possible. This study evaluates the role of infrared thermography in the planning, execution, and postoperative monitoring of microvascular flaps in head and neck reconstructions. Methods: This is a single institutional, prospective observational study conducted at a tertiary care hospital in South India for 13 months. Twenty patients were included, and their thermographic images were captured in the preoperative, intraoperative, and postoperative settings using the infrared camera FLIR T400. These images were analyzed along with the Doppler, and clinical monitoring findings in all the settings and the temperature difference were calculated postoperatively. Results: Hotspot perforator marking was made using infrared camera, and perforator marking was made using hand-held Doppler preoperatively, which correlated in 93% of cases. Intraoperatively, flap rewarming was successfully demonstrated in 19 of 20 cases. Postoperatively, flap compromise was observed on infrared thermography during the first 24 hours but not on clinical monitoring in three cases. The temperature difference values recorded were 5.4°C, 2.4°C, and 4.9°C. The mean of temperature difference of the healthy flaps was 1.0°C (range 0.1°C–1.8°C). Conclusion: Infrared thermography provides simple and reliable imaging, which can be used in perforator marking and flap designing preoperatively and checking the flap perfusion and vascular anastomosis patency intra- and postoperatively.

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“…Trends and future approaches of IRT for arm and forearm health assessment include several challenges, such as conducting thermal studies with larger, broader and more diverse populations, acquire reference data to assist the thermogram analysis before, during and after physical activities and create databases for the validation of predictive thermal models of the human skin (Magalhaes et al, 2015;Chang et al, 2015;Boguszewski et al, 2015;Rossignoli et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…The TISEM points, which were poorer in the literature appraised were: the specification of the time between setting the camera on and the images collection for avoiding the startup drift, the mention of the time of the day that the images were taken, and the drying method used for the skin in the situation that required it, which in most of these applications was not the case. The level of evidence of statistics overall was poor, most research works consisted in small samples, some lacked a control group, 8 papers (Neves et al, 2015b(Neves et al, , 2016Trentin et al, 2012;Chudecka and Lubkowska, 2012;Ratovoson et al, 2013;Chang et al, 2015;Haluzan et al, 2015;Boguszewski et al, 2015) did not presented any statistics and Neves et al (Neves et al, 2015a) presented the wrong statistics.…”

Section: Discussionmentioning

confidence: 99%

“…After a work mechanical stimulus, it was observed a faster thermal balance restoration when the upper limb was positioned horizontally. In a different experiment, Chang et al (2015) showed that IRT was viable for the detection of transient changes in forearm temperature variation, in healthy participants, during arterial occlusion, reperfusion and recovery. The results support the possibility of applying thermal imaging as a navigation tool to reveal sites in the upper extremity that are especially sensible to vascular perturbation.…”

Section: Physical Condition Evaluationmentioning

confidence: 99%

See 1 more Smart Citation

Biomedical musculoskeletal applications of infrared thermal imaging on arm and forearm: A systematic review

Vardasca

Magalhães

Abreu

et al. 2019

Journal of Thermal Biology

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Infrared thermal imaging (IRT) has been a target of research for biomedical musculoskeletal applications, due to the possible association of the physiological data that it provides, through skin temperature measurement, with pathological states. The aim of this systematic review is to acquaint the outcomes of the biomedical application of IRT in arm and forearm evaluation and its future perspectives of research. During the literature review, 926 articles were identified using the search engines PubMed and Scopus, and 10 articles were retrieved from other sources. After screening the abstracts and applying the eligibility criteria on those which were fully accessible, 33 articles were included in the review. It can be observed that IRT has the potential to provide physiological information on the arm and forearm, showing potential to serve as an aid in various pathologies and health situations. Future studies and challenges are identified and proposed, facilitating the improvement and acceptance of the application of IRT in the assessment of arm and forearm' health status.

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Rapid vs. delayed infrared responses after ischemia reveal recruitment of different vascular beds

Cited by 7 publications

References 9 publications

Monitoring of microvascular free flaps following oropharyngeal reconstruction using infrared thermography: first clinical experiences

Monitoring of microvascular free flaps following oropharyngeal reconstruction using infrared thermography: first clinical experiences

Role of Infrared Thermography in Planning and Monitoring of Head and Neck Microvascular Flap Reconstruction

Biomedical musculoskeletal applications of infrared thermal imaging on arm and forearm: A systematic review

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