Thermal imaging is a noninvasive modality that neither requires intravenous contrast nor exposes the patient to ionizing radiation exposure. This technique may help visualize vascular malformations and monitor their progression/ response to treatment. Note that arteriovenous malformations are abnormal connections between an artery and a vein which bypasses the capillary bed. They are usually congenital and can be treated with injection sclerotherapy or surgical excision. Image Source: https://clinicalimagingscience.org/thermographic-assessment-of-a-vascular-malformation-of-the-hand-a-new-imaging-modality/