Medical AI relies on high quality labeled datasets to detect tumors, measure organs, analyze scans, and support clinical decision systems. This blog explains everything you need to know about DICOM and NIfTI annotation the gold-standard formats for MRI, CT, and other radiological imaging. You’ll learn how annotation works, why it’s essential, the challenges involved, and how accurate labeling directly impacts clinical AI performance. Table of Contents 1 - What Are DICOM & N