High Quality Annotated data is the core requirement for applying Artificial Intelligence and Machine learning techniques on radiology images. Nuevozen’s NZ-LABELTM is a powerful web based application to interactively view and annotate medical images including but not limited to DICOM. The software uses latest web-GL technology for enabling high performance and an intuitive interactive user interface while handling large size medical images. This cloud based application allows workflows involving multiple annotators and reviewing capability to ensure higher quality of annotations. This can be easily integrated in your workflow environment or can be used in a stand-alone manner.