Mail List

About the ctusers mail list

The ctusers mail list is used to keep members up to date with the work of the group. Calls for papers, meeting announcements and other miscellaneous information is sent to subscribers. It is also a good place to ask questions and discuss topics of relevance to the group members - typically relating to the techinical aspects of CT scanners, scanning and applications.

For those not familiar with mail lists, they are a one to many communication system from the early days of the internet - users can email the list address and the email is forwarded to all subscribers. Other users can reply with a message which is again forwarded to subscribers, and public (to list members) discussions can develop from there.

The mail list moved to a new system in early 2026, old users have been migrated but will need to click on the migration link email. Alternatively just sign up to the new list - see below.

Subscribing to ctusers

Subscribe to ctusers by filling out the form on the ctusers list home page (email address is required, and your name is optional, but preferred). You will be sent an email with a link to confirm your address. Once confirmation is received, your request will be held for approval by the list moderator. You will be notified of the moderator’s decision by email.

This is a private list, which means that the list of members is not available to non-members.

Using ctusers

To post a message to all the list members, simply send an email to or reply to an email from the list. Only subscribed members can post to the list.

Modifying or deleting an existing subscription

You can manage your existing subscription, in one of two ways, via email or web interface:

  • email: Send an email with the subject ‘help’ (no quotes) to the following address

  • web interface: Log in to the mail list interface. If you have not yet created an account you will need to create one by providing a pasword for your subscription email address.

Mail list archives

To see the collection of prior postings to the list, visit the ctusers Archives. (The current archive is only available to the list members.)