Emergency Medical Hologram

• Full name: EMH Program Diagnostic and Surgical Subroutine
  • Commonly referred to as "EMH"
• VI designed for short-term supplementation of medical staff during emergency situations
  • Mark I rated for 1,500 hours prior to risk of memory fragmentation (VOY: "The Swarm")
  • At least one example demonstrated transition to AI upon extreme usage, exposure to social stimuli (Various)
• Characteristics
  • Mark I
    • Physical design based on Dr. Lewis Zimmerman (VOY: "Projections")
    • Medical subroutines designed based on experience of 47 individual Starfleet medical officers, including Leonard McCoy (VOY: "Life Line")
    • Database contains information from over two thousand medical reference texts (VOY: "Life Line")
      • Over fifty petaquads of computer memory devoted to medical database (VOY: "Life Line")
  • Mark IV
    • Designed to learn socialization and techniques in the field so as to avoid personality issues found in previous versions (SCE Short Story: "Hard Crash")
• Version history
  • Project begun at Jupiter Station Holoprogramming Center, Starfleet, c.2370
    • Project led by Lewis Zimmerman (VOY: "Projections", "Life Line")
    • Other staff included Reginald Barclay (VOY: "Projections")
  • Mark I completed early 2371 (VOY: "Caretaker", "Life Line")
    • 677 Mark I modules distributed across Starfleet (VOY: "Life Line")
    • Installation coupled with integrated backup module, interactive diagnostic program in event of malfunctions (VOY: "The Swarm", "Living Witness")
  • Design work begun on Long-term Medical Hologram mid-2373 (DS9: "Doctor Bashir, I Presume")
  • Issues with Mark I personality subroutines led to scrapping of LMH project, release of Mark II by 2374 (VOY: "Message in a Bottle")
    • Existing modules reassigned to maintenance and labor tasks (VOY: "Author, Author")
    • Vessel CMOs could request exemption on an individual basis (TNG Novel: A Time to Sow)
  • Mark IV released by 2376 (SCE Short Story: "Hard Crash"; VOY: "Life Line")