ENS 57758

v t e ENS Event
07:00 Jun 9, 2025
Title	Medical Event
Event Description	The following information was received from the California Department of Public Health via email: University of California, Los Angeles (UCLA) Health reported that a patient being treated for liver cancer underwent a Y-90 brachytherapy microsphere treatment on June 9, 2025. The written directive by the authorized user called for 120 Gy each [to be administered] to both the middle section (a 3 GBq vial) and the right liver section (a 20 Gbq vial). Post therapy evaluations determined that the administered dose to the right section of the liver was 88.9 Gy (74.08 percent of the prescribed dose), which is an underdose of more than 20 percent. The administered dose to the middle section of the liver was 114.2 Gy (95.17 percent of the prescribed dose) and was in accordance with the written directive. UCLA Health is conducting an investigation and will submit a 15-day report to the California Radiation Health Branch. California 5010 Number: 060925 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 57758 +/-
Where
Univ. Of California, Los Angeles Santa Monica, California (NRC Region 4)
License number:	1335-19
Organization:	California Radiation Control Prgm
Reporting

Agreement State
Time - Person (Reporting Time:+60.58 h2.524 days <br />0.361 weeks <br />0.083 months <br />)
Opened:	Robert Greger 19:35 Jun 11, 2025
NRC Officer:	Kerby Scales
Last Updated:	Jun 11, 2025
57758 - NRC Website
v • d • e

v t e Emergency Notification System
Univ. Of California, Los Angeles with Agreement State
WEEKMONTHYEAR2025-06-09T07:00:00 [Table view]
[ENS list for Univ. Of California, Los Angeles]

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