of hyperspectral technology for assessing the presence and severity of peripheral artery disease

Vascular Laboratory and Imaging


Evaluation of hyperspectral technology for assessing the presence and severity of peripheral artery disease


Chin JA, Wang EC, Kibbe MR (Northwestern Univ, Chicago, IL) J Vasc Surg 54:1679–1688, 2011§



A. Chandra, MD



Evidence Ranking


• B



Expert Rating


• 2



Abstract



Background


Hyperspectral imaging is a novel technology that can noninvasively measure oxyhemoglobin and deoxyhemoglobin concentrations to create an anatomic oxygenation map. It has predicted healing of diabetic foot ulcers; however, its ability to assess peripheral arterial disease (PAD) has not been studied. The aims of this study were to determine if hyperspectral imaging could accurately assess the presence or absence of PAD and accurately predict PAD severity.



Methods


This prospective study included consecutive consenting patients presenting to the vascular laboratory at the Jesse Brown VA Medical Center during a 10-week period for a lower extremity arterial study, including ankle-brachial index (ABI) and Doppler waveforms. Patients with lower extremity edema were excluded. Patients underwent hyperspectral imaging at nine angiosomes on each extremity. Additional sites were imaged when tissue loss was present. Medical records of enrolled patients were reviewed for demographic data, active medications, surgical history, and other information pertinent to PAD. Patients were separated into no-PAD and PAD groups. Differences in hyperspectral values between the groups were evaluated using the two-tailed t test. Analysis for differences in values over varying severities of PAD, as defined by triphasic, biphasic, or monophasic Doppler waveforms, was conducted using one-way analysis of variance. Hyperspectral values were correlated with the ABI using a Pearson bivariate linear correlation test.

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Apr 1, 2017 | Posted by in CARDIOLOGY | Comments Off on of hyperspectral technology for assessing the presence and severity of peripheral artery disease

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