ENS 54953

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v t e ENS Event
22:03 Oct 16, 2020
Title	Greater than Intended Dose to Liver Lobe
Event Description	The following was received via email from the California Radiation Control Program: On October 16, 2020, the [Radiation Safety Officer] RSO of Stanford University emailed [the Radiation Health Branch] RHB to inform a medical event with a Y-90 patient treatment. The physician mistakenly delivered the larger dose (approximately 30 mCi) to the liver lobe that was to get the smaller dose (approximately 13 mCi). The dose to the second lobe was adjusted with left over Y-90 from the dose draw to give the proper dose to the other lobe (approximately 30 mCi). So one lobe received much greater than the intended dose, while the other lobe received the proper dose. RHB will follow up on this investigation. California 5010 Number: 101620 * * UPDATE FROM ROBERT GREGER TO DONALD NORWOOD AT 1816 EST ON 12/2/2020 * * * The following information was received via E-mail: The authorized user prescribed 31.57 mCi (1.17GBq) Y-90 to the right lobe of the liver and 13.22 mCi (0.49GBq) to the left lobe of the liver. The higher dosage, 31.57 mCi (1.17GBq) Y-90 was delivered to the left lobe of the liver. The prescribed dosage of 13.22 mCi (0.49GBq) would result in a dose to the left lobe of 7,000 rad (70Gy), however the delivered dose was 17,500 rad (175 Gy). This is 10,500 rad (105 Gy) above the prescribed dose. Notified R4DO (Gepford) and via E-mail, NMSS (Williams) and the NMSS Events Notification E-mail Group. 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.

ENS 54953 +/-
Where
The Board Of Trustees Of The Leland Stanford, Jr. University Stanford, California (NRC Region 4)
License number:	0676-43
Organization:	California Radiation Control Prgm
Reporting

Agreement State
Time - Person (Reporting Time:+-1.43 h-0.0596 days <br />-0.00851 weeks <br />-0.00196 months <br />)
Opened:	K. Arunika Hewadikaram 20:37 Oct 16, 2020
NRC Officer:	Brian P. Smith
Last Updated:	Dec 2, 2020
54953 - NRC Website
v • d • e

v t e Emergency Notification System
The Board Of Trustees Of The Leland Stanford, Jr. University with Agreement State
WEEKMONTHYEAR2020-10-16T22:03:00 [Table view]
[ENS list for The Board Of Trustees Of The Leland Stanford, Jr. University]

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