Providing a cloud-based, software-as-a-service (SAAS) for care givers and their patients for mobile phones, portable media players, tablets, and handheld computers, featuring software for collecting, storing, uploading, transferring, remotely accessing, organizing, searching, indexing, synchronizing, annotating, commenting, recording voice commentary, sharing, emailing, collaborating in real-time, collaborating in non-real-time, patient scheduling, viewing, displaying and storing of digital files, digital content, and digital information, including 4-D cardiac image analysis in a quantitative image for caregivers to accurately and easily assess the viability of the patient's heart