To explore the usefulness of SFDI in the assessment of revascularization pre and post intervention
Patients of age 21 years and above with diabetes and undergoing lower limb arterial angioplasty
Willingness to participate in the study and undergo foot physiological assessments using SFDI
Mentally incompetent, younger than 21 years of age, prisoners, pregnant or breastfeeding women
Patients unable to provide informed consent
Any medical condition which makes the candidate an inappropriate subject for study participation, in the investigator's judgment