The Same Day Labs SDLDVD-R4XCB50 is a 4.7 GB 4x Write Medical Grade Plain Silver Surface DVD-R. There are 50 Discs packaged in a Spindle. The quality of media can have a direct impact on the ability to read and recover patient data. The  Same  Day  Labs  creates a  line  of Medical Grade Media for the sole purpose of recording digital Medical Images.  The Same Day Labs is held to the highest standards in the industry. It has taken the time to evaluate the quality of its media and its application in recording and playback for all modalities, including: CT, MR, RF, XA, MM, NM, US, EC, DX, CR, PT and PACS.