Investing in PACS using real option theory

  • W. Rueger


Frequently, traditional cost effectiveness models based on film savings and other productivity improvements indicate that an investment in PACS is difficult to justify. This paper offers a new evaluation perspective based on Real Option Theory that has been applied successfully in other industries. Other than the traditional savings centric model, it allows to account for managerial flexibility, risk, expansion opportunities, increased market share and other “intangible” key metrics.

It is based on the consideration that an initial investment may create opportunities for future investments, e.g. by way of expansion. The additional value associated with such real options uncovers the embedded value of the initial investment and may often favor an investment scenario where the traditional savings based approach falls short.

In the following, the valuation of a real option and its application to various PACS investment scenarios (option to wait, option to expand, option to learn) are discussed.


Cash Flow Real Option Call Option Strike Price Exercise Price 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. [1]
    Amram M, Kulatilika K (1999) Real options. Boston: Harvard Business School Press. http://www.real-options.corn
  2. [2]
    Arenson et al (1989) Proceedings SPIE. 1093: 50–58CrossRefGoogle Scholar
  3. [3]
    Brennan M, Trigeorgis L (2000) Project Flexibility, Agency, and Competition. Oxford University Press, New YorkGoogle Scholar
  4. [4]
    Copeland T, Keenan P (1998) How much is flexibility worth. The McKinsey Quarterly 2: 38–49
  5. [5]
    Damodaran A (1999) The Promise and Peril of Real Options. working paper modar
  6. [6]
    Flatto J (1996) Using Real Options in Project Evaluation, The Magazine for Life Insurance Management Resource.
  7. [7]
    Hruby W, Mosser H, Urban M, Rueger W (1992) The Vienna SMZO project: the totally digital Hospital. European Journal of Radiology 16: 66–68PubMedCrossRefGoogle Scholar
  8. [8]
    Hull J (1997) Options, Futures and other Derivatives. Prentice Hall, Upper Saddle River, NJ, USAGoogle Scholar
  9. [9]
    Leslie K, Michaels M (1997) The real power of real options. The McKinsey Quarterly 3: 4–22
  10. [10]
    Straub WH, Gur D (1990) The hidden costs of delayed access to diagnostic imaging information: impact on PACS implementation. AJR 155: 613–616PubMedCrossRefGoogle Scholar
  11. [11]
    Trigeorgis L (1995) Real options in capital investments. Praeger, Westport USAGoogle Scholar
  12. [12]
    Veritas (1999) Real Options — An Analytical Approach to Aligning Risk Management and Corporate Strategy. Boston: Corporate Finance Review.
  13. [13]
    Young J (1997) Decisions in Imaging Economics, Supplement May/June 1997

Copyright information

© Springer-Verlag Wien 2001

Authors and Affiliations

  • W. Rueger
    • 1
  1. 1.Siemens Medical SystemsUSA

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