FDA Medical Device Recalls (openFDA)
Computerized Medical Systems Inc: XiO Radiation Treatment Planning System, XiO Release 4.3.1 through 4.40.00. Used to create treatment plans for any cancer patient for who external beam radiation therapy or brachytherapy has been prescribed.
- Recall number
- Z-2567-2011
- Recalling firm
- Computerized Medical Systems Inc
- Product
- XiO Radiation Treatment Planning System, XiO Release 4.3.1 through 4.40.00. Used to create treatment plans for any cancer patient for who external beam radiation therapy or brachytherapy has been prescribed.
- Status
- Terminated
- Initiated
- 2008-12-09
- Posted
- 2011-06-15
- Terminated
- 2014-04-09
- Reason
- XiO Software: Under certain conditions, when the port shape is altered, dose is not recalculated. The port-change flag is not being set correctly when the port shape is regenerated. The dose distribution will not match the blocking displayed and the mis-match might not be obvious. Monitor Unit calculations will also be based on an incorrect dose distribution. This problem has existed since Re
- Root cause
- Software design
- Action
- Computerized Medical Systems, Inc. sent a "XiO CUSTOMER ADVISORY" letter dated December 8, 2008 to all affected customers. The advisory describes the product, problem, and the actions to be taken. The customers were instructed to set the prompt to "Yes" to avoid the problem from occurring according to written instructions provided in the advisory. This problem has existed since Release 4.3.1 and is expected to be resolved with XiO Release 4.50.00. Questions should be directed to the manufacturer's representative at 408-830-8023.
- Quantity
- 784
- Distribution
- Worldwide Distribution-- USA (nationwide) including Puerto Rico and countries of Albania, Algeria, Argentina, Australia, Austria, Azerbaijan, Bahamas, Belgium, Bolivia, Bosnia and Herzegovina, Brazil, Canada, Chile, China, Colombia, Costa Rica, Croatia, Czech Republic, Ecuador, Egypt, El Salvador, Estonia, France, Georgia, Germany, Greece, Guatemala, Hungary, India, Indonesia, Israel, Italy, Japan, Libya, Lithuania, Malaysia, Mexico, Mongolia, Netherlands, New Zealand, Nicaragua, Philippines, Poland, Portugal, Qatar, Russia, Saudi Arabia, Serbia, Singapore, South Africa, South Korea, Spain, Sri Lanka, Sweden, Switzerland, Tajikistan, Thailand, Turkey, Ukraine, United Kingdom, Uruguay, Venezuela, Yemen, and Zimbabwe.
- Lot, serial or model codes
- XiO Release 4.3.1 through 4.40.00. All lot or serial numbers.
- 510(k) numbers
- ["K092132"]
- 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