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A medical event involving Y-90 microsphere … A medical event involving Y-90 microspheres (TheraSpheres) occurred at approximately 1000 EDT on 4/14/15. The prescribed dosage was 34.6 mCi and the delivered dosage was 25.5 mCi. This equates to a 26.3 percent underdose. The patient was notified by the authorized user following treatment and before discharge on 4/13/15. The referring physician was notified by the authorized user via electronic mail at 1149 EDT on 4/13/15. The initial hypothesis on cause may have been related to difficult access to an anatomical region in the liver, resulting in the need to use lower than normal pressure on the syringe used for microsphere delivery. All established administration procedures were followed. A written report to the appropriate NRC offices will follow within 15 days.</br>* * * RETRACTION FROM MACK RICHARD TO VINCE KLCO ON 4/14/15 AT 1515 EDT * * *</br>The following information was excerpted from the licensee email:</br>The reason for this retraction is based upon discussions with the Authorized User (AU) who performed the Y-90 treatment and additional questions raised and clarifications made by the NRC Region III Office. During that discussion, the AU indicated that he utilized a lower syringe pressure than normal to prevent reflux of the Y-90 microspheres which would have resulted in a less than optimal treatment. The AU acknowledged that the amount administered was acceptable, given the need to use the lower syringe pressure and that he will modify the written directive to appropriately reflect a change in the written directive based upon those circumstances.</br>Notified the R3DO (McCraw) and NMSS Events Notification via email.</br>A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.necessarily result in harm to the patient. +
14:00:00, 14 April 2015 +
50,983 +
11:44:00, 14 April 2015 +
14:00:00, 14 April 2015 +
A medical event involving Y-90 microsphere … A medical event involving Y-90 microspheres (TheraSpheres) occurred at approximately 1000 EDT on 4/14/15. The prescribed dosage was 34.6 mCi and the delivered dosage was 25.5 mCi. This equates to a 26.3 percent underdose. The patient was notified by the authorized user following treatment and before discharge on 4/13/15. The referring physician was notified by the authorized user via electronic mail at 1149 EDT on 4/13/15. The initial hypothesis on cause may have been related to difficult access to an anatomical region in the liver, resulting in the need to use lower than normal pressure on the syringe used for microsphere delivery. All established administration procedures were followed. A written report to the appropriate NRC offices will follow within 15 days.</br>* * * RETRACTION FROM MACK RICHARD TO VINCE KLCO ON 4/14/15 AT 1515 EDT * * *</br>The following information was excerpted from the licensee email:</br>The reason for this retraction is based upon discussions with the Authorized User (AU) who performed the Y-90 treatment and additional questions raised and clarifications made by the NRC Region III Office. During that discussion, the AU indicated that he utilized a lower syringe pressure than normal to prevent reflux of the Y-90 microspheres which would have resulted in a less than optimal treatment. The AU acknowledged that the amount administered was acceptable, given the need to use the lower syringe pressure and that he will modify the written directive to appropriately reflect a change in the written directive based upon those circumstances.</br>Notified the R3DO (McCraw) and NMSS Events Notification via email.</br>A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.necessarily result in harm to the patient. +
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
00:00:00, 14 April 2015 +
13-02752-03 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
01:47:57, 2 March 2018 +
11:44:00, 14 April 2015 +
-0.0946 d (-2.27 hours, -0.0135 weeks, -0.00311 months) +
14:00:00, 14 April 2015 +
TheraSphere + and Underdose +
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