Detection of Perforators Using Thermal Imaging

Sheena, Yezen; Jennison, Toby; Hardwicke, Joseph; Titley, O. Garth

doi:10.1097/prs.0b013e3182a80740

Cited by 52 publications

(52 citation statements)

References 38 publications

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“…Investigators have applied thermography to localizing perforators ever since the 1960s . Sven Weum reported an excellent positive predictive value of 95.6% when using DIRT in the detection of the deep inferior epigastric artery (DIEA) perforator in a series of 25 patients .…”

Section: Discussionmentioning

confidence: 99%

“… Δ T as the temperature rise, T X as the temperature of the hotspots ( T h ) and the SRSs ( T srs ) measured during the rewarming, and T 0 as the temperature of the hotspots and SRSs immediately after the cold challenge. T b as the instantaneous temperature of the hotspots and the SRSs immediately before cooling, T r as relative temperature in percent The T r were then used to plot relative time–temperature curves (rTTCs). …”

Section: Methodsmentioning

confidence: 99%

“…The temperature of the skin correlates with local blood supply; Arai first described this phenomenon over 40 years ago, demonstrating what we now refer to “hotspots” in thermography corresponding to the location of perforators . Previous studies have shown that dynamic infrared thermography (DIRT) was a valuable technique in assisting the planning, harvesting, and monitoring the free flaps . However, in the aforementioned studies, thermal images were captured by high‐resolution cameras, which usually cost tens of thousands of dollars.…”

Section: Introductionmentioning

confidence: 99%

“…19,20 Previous studies have shown that dynamic infrared thermography (DIRT) was a valuable technique in assisting the planning, harvesting, and monitoring the free flaps. [21][22][23][24][25][26][27][28][29] However, in the aforementioned studies, thermal images were captured by high-resolution cameras, which usually cost tens of thousands of dollars. The high capital investment makes this impractical for widespread use.…”

Section: Introductionmentioning

confidence: 99%

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Value of a smartphone‐compatible thermal imaging camera in the detection of peroneal artery perforators: Comparative study with computed tomography angiography

Chen

Huang

et al. 2019

Head & Neck

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Background The aim of this study was to investigate the value of a smartphone‐compatible thermal imaging camera in the mapping of the peroneal artery perforators. Methods Twelve consecutive patients scheduled for fibular flap reconstruction were enrolled. The lower limbs were first studied using smartphone‐based dynamic infrared thermography (DIRT). During the rewarming, the hotspots were marked, small rubber markers were taped to the registered sites, and then the patients were sent for a CT scan. The diagnostic performance of smartphone‐based DIRT was evaluated by comparing the DIRT findings with CT angiography and intraoperative findings. Results DIRT detected 42 of the 57 dominant perforators in 24 limbs and resulted in a sensitivity of 73.7% and a positive predictive value of 65.6%. Conclusions The sensitivity and positive predictive value of the smartphone‐based DIRT are low. Currently, it should be used as an adjunctive tool together with the established imaging techniques.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Value of a smartphone‐compatible thermal imaging camera in the detection of peroneal artery perforators: Comparative study with computed tomography angiography

Chen

Huang

et al. 2019

Head & Neck

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“…The aim of the study was to compare perforator location as determined in dTnorm and t90_10 images in cold and heat stress dynamic thermography and in static thermography with Doppler ultrasound in the preoperative 10.21611/qirt.2016.059 planning period, and intra-and postoperatively on subsequent days, considering the fact that the relationship between the temperature of the skin and its blood supply is documented in literature [4,5,6,7].…”

Section: Fig 1 Tram Flap Zonesmentioning

confidence: 99%

Comparison of perforator location in dynamic and static thermographic imaging with Doppler ultrasound in breast reconstruction surgery

Kołacz¹,

Moderhak²,

Jankau³

2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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This paper compares the effectiveness of the dTnorm and t90_10 parametrizations in dynamic thermography for imaging location of perforators in TRAM flaps in the intraoperative period. The results were compared with the location detected in a Doppler ultrasound examination. Cold and heat stimulation was used in dynamic thermography. Additionally, these results were compared with static thermography. The study was conducted on a group of 10 female patients after breast reconstruction.

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Reconstruction of a long defect of the ulnar artery and nerve with an arterialized neurovenous free flap in a teenager: A case report and literature review

et al. 2017

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There is evidence that nerve flaps are superior to nerve grafts for bridging long nerve defects. Moreover, arterialized neurovenous flaps (ANVFs) have multiple potential advantages over traditional nerve flaps in this context. This paper describes a case of reconstruction of a long defect of the ulnar artery and nerve with an arterialized neurovenous free flap and presents a literature review on this subject. A 16‐year‐old boy sustained a stab wound injury to the medial aspect of the distal third of his right forearm. The patient was initially observed and treated at another institution where the patient was diagnosed with a flexor carpis ulnaris muscle and an ulnar artery section. The artery was ligated and the muscle was sutured. Four months later, the patient was referred to our institution with complaints of ulnar nerve damage, as well as hand pain and cold intolerance. Physical examination and ancillary tests supported the diagnosis of ulnar artery and nerve complete section. Surgery revealed an 8 cm hiatus of the ulnar artery and a 5 cm defect of the ulnar nerve. These gaps were bridged with a flow through ANVF containing the sural nerve and the lesser saphenous vein. The postoperative course was uneventful. Two years postoperatively, the patient had regained normal trophism and M5 strength in all previously paralyzed muscles according to the Medical Research Council Scale. Thermography revealed good perfusion in the right ulnar angiosome. The ANVF may be an expedite, safe and efficient option to reconstruct a long ulnar nerve and artery defect.

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Detection of Perforators Using Thermal Imaging

Abstract: Diagnostic, II.

Cited by 52 publications

References 38 publications

Value of a smartphone‐compatible thermal imaging camera in the detection of peroneal artery perforators: Comparative study with computed tomography angiography

Value of a smartphone‐compatible thermal imaging camera in the detection of peroneal artery perforators: Comparative study with computed tomography angiography

Comparison of perforator location in dynamic and static thermographic imaging with Doppler ultrasound in breast reconstruction surgery

Reconstruction of a long defect of the ulnar artery and nerve with an arterialized neurovenous free flap in a teenager: A case report and literature review

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