Deutsche Version


Talk at LinuxDays Luxembourg 2002

2. October 2002


Free Software in Health Care
Integrated software environment for all medical tasks based on Debian GNU/Linux

The talk wants to give an overview about the current state of free software for medicine and ranging from medical practice management up to microbiological research. Moreover it draws a sketch how all this software will be integrated into the Debian GNU/Linux distribution by the so called Debian-Med project. The goal of this Debian internal project is to provide people in health care with a secure, easy to use and easy to maintain free operating system. Some examples for the ease of maintainance will be given in a demo at the end of the talk.

The talk is intended for an audience which does not necessarily need detailed technical knowledge about Linux or Debian.

Related talk: Debian Internal Projects

Here you can find the MagicPoint source including the necessary MagicPoint style of the talk.
There are the preformated slides in HTML


Free Software in Health Care

Integrated software environment for all medical tasks based on Debian GNU/Linux

(page 1)


  • Motivation
  • Status of free software for medicine
  • What is Debian?
  • What is Debian-Med?
  • Why use Debian for medical care?
  • How does it work?
  • Summary: Goals of Debian-Med
  • Future
(page 2)


  • General practice
    • Secure and trustworthy paperless practice management
    • Easy and fast handling
  • Outpatient Care
    • Secure and trustworthy clinical administration
    • Standardised medical record exchange
  • Medical science
    • Open platform for telepathology
    • Open environment for medical studies
  • Microbiology
    • Easy to use environment for analysis of protein and DNA sequences
    • Portable data formats
(page 3)

Profile of target users

  • Mostly less technically competent
  • Unable to install upstream programs with acceptable effort
  • Not interested in administration of operating system
  • Interested in a limited subset of available free software
  • Needing easy usage
  • Needing security and confidence
  • Needing documentation and user environment in the mother tongue

→ Any solutions for those users?

Yes and No

(page 4)

Status of free software for medicine

  • Orphaned upstream
  • Strange Licenses
  • Hard to use because of lacking GUI
  • Porting issues (architectures, byte order, 32 vs 64 bit)
  • Data format not exchangeable
  • Parallel development of the same functionality
  • Used tools or back ends are not intended for those applications
  • Target users have no idea how to install this stuff
(page 5)


GnuMed screenshot
  • Robust, secure, portable
  • Professional design (Client - Server)
  • Technology: PostgreSQL, several Clients (Python, Web, ...)
  • Security of data has highest priority
  • Not ready yet (heavy development)
(page 6)

Torch (formerly known as FreePM)

Torch screenshot
  • Technology: Zope
  • Drawback: no professional database backend
  • already in production
(page 7)

Res Medicinae

Res Medicinae screenshot
  • Technology: Java (causes trouble with license)
  • promising but far from ready
(page 8)

Tk Family Practice

Tk Family Practice screenshot
  • Technology: Tcl/Tk - portable but quite unsuitable for larger projects, additional Web-Client, self made database back end
  • Already in production
(page 9)

OIO - Open Infrastructure for Outcomes

OIO - Open Infrastructure for Outcomes screenshot
  • Out-patient care, robust, flexible
  • Technology: Zope + PostgreSQL
  • Only browser front end
(page 10)

More medical practice management

  • FreeMed
    • Technology: PHP + MySQL
    • No appropriate database back end (PHP + MySQL)
    • Development stalled
  • SQL Clinic
    • Psychiatric housing
    • PostgreSQL + Perl web interface
  • ... and others ...
(page 11)
Why does the world need
       this whole lot of free programs to manage patient data?????
(page 12)

Reasons for this variety?

  • Historical reasons
  • Less popularity
  • Different technological decisions
  • Different concepts
(page 13)

What is Free Software

1. Free Redistribution
The license of a Debian component may not restrict any party from selling or giving away the software as a component of an aggregate software distribution containing programs from several different sources. The license may not require a royalty or other fee for such sale.
2. Source Code
The program must include source code, and must allow distribution in source code as well as compiled form.
3. Derived Works
The license must allow modifications and derived works, and must allow them to be distributed under the same terms as the license of the original software.
4. Integrity of The Author's Source Code
The license may restrict source-code from being distributed in modified form _only_ if the license allows the distribution of "patch files" with the source code for the purpose of modifying the program at build time. The license must explicitly permit distribution of software built from modified source code. The license may require derived works to carry a different name or version number from the original software. (This is a compromise. The Debian group encourages all authors not to restrict any files, source or binary, from being modified.)
5. No Discrimination Against Persons or Groups
The license must not discriminate against any person or group of persons.
(page 14)
6. No Discrimination Against Fields of Endeavor
The license must not restrict anyone from making use of the program in a specific field of endeavor. For example, it may not restrict the program from being used in a business, or from being used for genetic research.
7. Distribution of License The rights attached to the program must apply to all to whom the program is redistributed without the need for execution of an additional license by those parties. 8. License Must Not Be Specific to Debian
The rights attached to the program must not depend on the program's being part of a Debian system. If the program is extracted from Debian and used or distributed without Debian but otherwise within the terms of the program's license, all parties to whom the program is redistributed should have the same rights as those that are granted in conjunction with the Debian system.
9. License Must Not Contaminate Other Software
The license must not place restrictions on other software that is distributed along with the licensed software. For example, the license must not insist that all other programs distributed on the same medium must be free software.
Example Licenses
The "GPL", "BSD", and "Artistic" licenses are examples of licenses that we consider "free".
(page 15)

What is Debian?

  • Linux is just the kernel of your operating system.
  • You need a lot of applications around.
  • Those collections of software around the Linux kernel is called distribution.
  • Companies who build such distributions are called distributors.
  • They make money by selling their distribution in boxes, doing support and training.
  • You might know Mandrake, RedHat, Suse and others.
  • Debian is just one of them.
(page 16)
That was wrong.
(page 17)

What is Debian? (next try)

The Debian Project is an association of individuals who have made common cause to create a free operating system. This operating system that we have created is called
Debian GNU/Linux,
or simply Debian for short.
Moreover, work is in progress to provide Debian for other than Linux kernels, primarily for the Hurd. Other possible kernels are BSD and even ports to MS Windows are planed.
(page 18)

Web of trust

Debian developers keyring
(page 19)

Differences to other distributions

  • Debian is not a company but an organisation.
  • It does not sell anything.
  • Debian members - generally called maintainers - are volunteers.
  • Maintainers are working on the common goal: building the best operating system they could afford
  • Largest collection of ready-to-install Free Software on the Internet
  • Two ways to obtain Debian GNU/Linux
    • Buying it from any other distributor on CD
    • Downloading from the Web for free
  • The later is the common way and there are really great tools to do it this way.
(page 20)

What is Debian-Med?

  • Debian internal project
  • Completely integrated into Debian
  • Special care for the quality of program packages in the field of medicine which are integrated in Debian yet
  • Building packages of medical software which is missing inside Debian and inclusion of those packages
  • Caring for a general infrastructure for medical users
(page 21)

History of Debian-Med

Thus the Debian developers who attended the conference had some Bordeaux wine at first ...
History of Debian-Med - Social event of LSM with wine
(page 22)

History of Debian-Med (continued)

History of Debian-Med - Social event of LSM with laptop open
... and prepared a talk afterwards when somebody said the alarming words:

There is a laptop open!

That way the idea was born.
The official start of the Debian-Med project was in January 2002.
(page 23)

Goals in detail

Example: Dental Practice
  • OdontoLinux
    → PostgreSQL, PHP, Debian package available
  • LinuDent
    → Tcl/Tk, shared code with Tk Family Practice
Authors now are in touch ...

→ Goal of Debian-Med: Integration

(page 24)


  • Debian contains a number of packages to analyze DNA and protein sequences
  • Different state of development
  • Different licenses
    • Sometimes not DFSG compatible
    • Avoids wide distribution
  • Problems
    • Incompatible data formats
    • Problems on different hardware platforms
    • Different usage

→ Goal of Debian-Med: Apply Debian standards of quality

(page 25)

Missing free software solutions

  • Drug database
  • Pharmacy
  • Physiotherapy
  • veterinary practice

→ Goal of Debian-Med: Supporting developers

(page 26)

Special fields

  • Medical imaging
    • Different proprietary image formats of medical devices
    • Licensing and patent problems
  • Control of medical devices
    • Replacements of proprietary software on non-free systems with drawbacks regarding to functionality and security

→ Goal of Debian-Med: Indicate advantages of free software to programmers

(page 27)

Complex problems

  • medical research
    • powerful Applications (DHCP / VISTA)
    • telepathology (ipath)
  • medical record
    • GEHR (OpenEHR)
    • OIO

→ Goal of Debian-Med: Demanding solid packaging

(page 28)


  • "Traditional" weakness of free software
    • Possibility to give contribution without high technical skills!
  • Medicine HOWTO
    • Part of Linux Documentation Project (LDP)
    • Description of existing free medical software
    • Translation would be great
  • Resmedicinae Analysis Document
    • Analysis of existing programs
    • Specification of requirements on practice management software
    • Only rudimentary English translation
    • Need for this kind of analysis documents for other fields

→ Goal of Debian-Med: Packaging documentation and translations

(page 29)
Debian-Med schema
(page 30)

Why use Debian for medical care?

  • Focus on security and stability
  • Powerful packaging tools
  • Strong quality assurance, carefully tested
  • Strict rules (policy)
  • Developed by about 1000 volunteers
  • Support of 11 hardware architectures (auto builders: alpha, arm, hppa, i386, ia64, m68k, mips, mipsel, powerpc, s390, sparc)
  • Single developers have influence on development - they just have to do it
(page 31)

How does it work?

  • Collection of medical software by meta packages
    → No research for available medical software necessary
    → User is not forced to browse the whole package list of Debian
    → Easy comparison between software covering the same task
    → Safety against accidental removal of dependencies
    → Conflicts to incompatible packages
    → Easy installation
    → Low effort for administration
  • Adapted configuration inside meta packages
    → Care for special needs of Debian-Med users
  • Documentation packages
    → Packaging and creating of relevant documentation
    → Translation
(page 32)

Role: Debian-Med user

  • System administrator defines group of medicine users
  • Extra menu "Med"
  • Users of role Med could have extra configuration
  • Do not bother other users with those additional stuff
Debian-Med does not develop medical software.
It cares just for smooth integration of third party software into Debian.
(page 33)

Summary: Goals of Debian-Med

  • Integration of medical software
  • Apply Debian standards of quality to medical software
  • Supporting developers
  • Indicate advantages of free software to programmers
  • Solid packaging for huge software which is hard to install
  • Providing documentation and translation
(page 34)


  • Only first steps
  • Some meta packages ready
  • Great interest from developers and users
  • First version in Woody+1
  • Knoppix based Live-CD
(page 35)

Further Information

(page 36)

Homepage Andreas Tille