FDA Medical Device Recalls (openFDA)
Computerized Medical Systems Inc: Monaco Radiation Treatment Planning System, Monaco Release 1.0.0 through 1.0.2. Used to create treatment plans for any cancer patient for who external beam intensity modulated radiation therapy (IMRT) has been prescribed.
- Recall number
- Z-2560-2011
- Recalling firm
- Computerized Medical Systems Inc
- Product
- Monaco Radiation Treatment Planning System, Monaco Release 1.0.0 through 1.0.2. Used to create treatment plans for any cancer patient for who external beam intensity modulated radiation therapy (IMRT) has been prescribed.
- Status
- Terminated
- Initiated
- 2008-06-30
- Posted
- 2011-06-14
- Terminated
- 2013-04-04
- Reason
- Monaco: If the user selects Monte Carlo Photon as the Secondary Algorithm (to be used for final dose calculation through segments), and selects SKIP Forward button at any time during stage 2 optimization, the system may only use the pencil beam algorithm for final computation of dose even though Monte Carlo was selected. Other than specific output to the console window, there will be no other in
- Root cause
- Software design
- Action
- Computerized Medical Systems, Inc. sent a "MONACO CUSTOMER ADVISORY" letter dated June 2008 to all affected customers. The letter describes the product, problem, and the action to be taken. The customer was instructed to use caution when using the Skip Forward button in stage 2 according to written instructions provided in the letter. This defect exists in Monaco Release 1.0.0 through 1.0.2 and will be resolved as soon as possible. Note: The issue was resolved in Monaco Release 2.0.1 and above. Questions should be directed to the manufacturer's representative telephone number at 408-830-8023.
- Quantity
- 47
- Distribution
- Worldwide Distribution-- USA (nationwide) including the states of IL, MI, MO, OR, SC, TX, VA, and Puerto Rico and the countries of Canada, China, Cyprus, Estonia, France, Germany, Greece, Italy, Japan, Netherlands, Philippines, Poland, Portugal, Slovenia, South Korea, Spain, and United Kingdom.
- Lot, serial or model codes
- XiO Release 1.0.0 through 1.0.2 All lot or serial numbers
- 510(k) numbers
- ["K071938","K091179"]
- 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