FDA Medical Device Recalls (openFDA)
Computerized Medical Systems Inc: XiO Radiation Treatment Planning System, XiO versions equal to or greater than 2.4.0 and less than 4.63.0 The XiO RTP System is used to create treatment plans for any cancer patient for whom external beam radiation therapy or brachytherapy has been prescribed.
- Recall number
- Z-2919-2011
- Recalling firm
- Computerized Medical Systems Inc
- Product
- XiO Radiation Treatment Planning System, XiO versions equal to or greater than 2.4.0 and less than 4.63.0 The XiO RTP System is used to create treatment plans for any cancer patient for whom external beam radiation therapy or brachytherapy has been prescribed.
- Status
- Terminated
- Initiated
- 2011-06-09
- Posted
- 2011-08-03
- Terminated
- 2013-04-04
- Reason
- The XiO Software currently prompts for entry of CT to ED data for a studyset. No indication is given that the Electron Density data should only be used for Photon and Electron calculations and either Relative Stopping Power or Mass Density should be used for Proton calculations (depending on the algorithm).
- Root cause
- Software design
- Action
- The firm, Eletka, Inc., issued an "Important Safety Notice" dated May 18, 2011 via mail to all affected sites. The notice explains the issue and identifies a work around to the problem until the new release is available. The customers were instructed to complete and return the enclosed "Confirmation of Receipt" form via FAX to 314-993-1175, attn: QA; e-mail or mail: CMS Software, Attn: QA, 13723 Riverport Drive, Suite 100, Maryland Heights, MO 63043. The notice states that "this problem has existed since XiO Release 2.4.0 and has been resolved in XiO Release 4.63.0 by adding warning messages and explanations to the XiO On-Line Help. Your site will be notified when this release is available." If you have any question, call 314-993-0003, 800-878-4267 or 408-830-8023.
- Quantity
- 7
- Distribution
- Worldwide distribution: USA (nationwide) including: IL, IN, MA, NJ and OK; and country of Germany.
- Lot, serial or model codes
- XiO versions equal to or greater than 2.4.0 and less than 4.63.0
- 510(k) numbers
- ["K102216"]
- PMA numbers
- not on file
- Product code
- MUJ
- Firm FEI
- 1937649
- Firm city
- Maryland Heights
- Firm state
- MO
- Firm country
- not on file
Where this comes from
- Register
- FDA Medical Device Recalls (openFDA)
- Publisher
- U.S. Food and Drug Administration (openFDA)
- File
- device-recall-0001-of-0001.json.zip
- sha256
- b87518bfe2e8
- Size
- 288210821 bytes
- Published
- 2026-09-28
- Read
- 2026-09-29T08:25:23.626Z
- Source file
- Source file retained · verify
- Refresh due
- 2026-10-06
Unless otherwise noted, the content, data, documentation, code, and related materials on openFDA is public domain and made available with a Creative Commons CC0 1.0 Universal dedication.
Cite as
FDA Medical Device Recalls (openFDA) (U.S. Food and Drug Administration (openFDA)), device-recall-0001-of-0001.json.zip, sha256 b87518bfe2e8, published 2026-09-28