RAD-AID International is a 501(c)3 nonprofit organization dedicated to improving and expanding radiology services in under-resourced and medically underserved regions of the world. The World Health Organization (WHO) reports that half of the world's population has no access to medical imaging (radiology), such as x-ray, ultrasound, and mammography. This disparity has contributed to inadequate health care among poor populations, such as for women's health (breast cancer screening and maternal-infant health), HIV-related disease, Tuberculosis, cancer, heart disease, and trauma because these diseases often require radiology for diagnosis and care. To address this worldwide problem, RAD-AID uses a multidisciplinary approach involving economic development, health care system evaluation, technology innovation, clinical education, and technical training to improve global radiology for delivering vital health services.