Cooling of the skin over the medial supraorbital region in 80% of patients who have an occlusion or severe stenosis of a carotid artery can be demonstrated by facial thermography. Minor stenotic lesions in the carotid arteries do not produce characteristic thermographic changes, while thermography is of no help in the diagnosis of vertebrobasilar arterial disease.Thermographic changes suggestiv...

This is a study of the possibilities of a qualitative evaluation of protective materials with active thermography. It presents a simulation of a periodic excitation of a multilayer composite material. Tests were conducted with lock-in thermography on Kevlar composite consisting of 16 layers of Kevlar fabric reinforced with formaldehyde resin with implanted delamination defects. Lock-in thermogr...

OBJECTIVES To correlate Frey's syndrome with subjective symptoms, Minor's starch iodine test results, and infrared thermography measurements, and to discuss the utility of thermography as a quantitative diagnostic method. METHODS This study included 59 patients who underwent unilateral parotidectomy. A subjective clinical questionnaire and an objective Minor's starch iodine test were performe...

Temperature has been used to diagnose human’s health since 400 B.C. where Hippocrates reported disease is to be found whichever part of human body is in excess heat or cold. This idea is still widely applied nowadays and the advance in infrared thermography technology is furthering the idea into more sophisticated diagnosis techniques, such as detection of breast cancer. Detection of ocular dis...

ActiveU and passive thermographies are two efficient techniques extensively used to measure heterogeneous thermal patterns, leading subsurface defects for diagnostic evaluations. This study conducts a comparative analysis on low-rank matrix approximation methods in thermography with applications of semi-, convex-, sparse-nonnegative factorization (NMF) detecting patterns. These inherit the adva...

Eddy current thermography testing is an emerging technology in nondestructive testing. This technology combines eddy current and thermographic NDT techniques to provide a fast and efficient method for defect detection and characterisation over a relatively large area. The technique uses induced eddy currents to heat the sample being tested and defect detection is based on the changes of the ind...

Equine thermography has increased in popularity recently because of improvements in thermal cameras and advances in image-processing software. The basic principle of thermography involves the transformation of surface heat from an object into a pictorial representation. The colour gradients generated reflect differences in the emitted heat. Variations from normal can be used to detect lameness ...