Performance analysis of a medical record exchanges model

Ean Wen Huang, Der Ming Liou

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Electronic medical record exchange among hospitals can provide more information for physician diagnosis and reduce costs from duplicate examinations. In this paper, we proposed and implemented a medical record exchange model. According to our study, exchange interface servers (EISs) are designed for hospitals to manage the information communication through the intra and interhospital networks linked with a medical records database. An index service center can be given responsibility for managing the EIS and publishing the addresses and public keys. The prototype system has been implemented to generate, parse, and transfer the health level seven query messages. Moreover, the system can encrypt and decrypt a message using the public-key encryption algorithm. The queuing theory is applied to evaluate the performance of our proposed model. We estimated the service time for each queue of the CPU, database, and network, and measured the response time and possible bottlenecks of the model. The capacity of the model is estimated to process the medical records of about 4000 patients/h in the 1-MB network backbone environments, which comprises about the 4% of the total outpatients in Taiwan.

Original languageEnglish
Pages (from-to)153-160
Number of pages8
JournalIEEE Transactions on Information Technology in Biomedicine
Issue number2
Publication statusPublished - Mar 1 2007
Externally publishedYes


  • Electronic medical records
  • Encryption
  • Health level seven (HL7)
  • Queuing analysis

ASJC Scopus subject areas

  • Biotechnology
  • Computer Science Applications
  • Electrical and Electronic Engineering


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