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The following information was provided by … The following information was provided by the Illinois Emergency Management Agency (the Agency) via phone and email:</br>The Agency was contacted on January 9, 2026, by radiation safety staff at Northwestern Memorial Hospital to report that a patient prescribed 21.1 mCi (0.7807 GBq) of Y-90 TheraSpheres on that date received approximately 36 percent of the prescribed dose. A previously administered dose to the same patient was delivered without incident. The patient and referring physician were notified, and there was no reported adverse impact to the patient. The investigation is ongoing, and a reactive inspection will be conducted next week to review procedures and identify the possible root cause. This event meets the criteria for a reportable event under 32 Ill. Adm. Code 335.1080 and was reported to the NRC on January 9, 2026.</br>Illinois item number: IL260001</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. +
06:00:00, 9 January 2026 +
58,112 +
16:27:00, 9 January 2026 +
06:00:00, 9 January 2026 +
The following information was provided by … The following information was provided by the Illinois Emergency Management Agency (the Agency) via phone and email:</br>The Agency was contacted on January 9, 2026, by radiation safety staff at Northwestern Memorial Hospital to report that a patient prescribed 21.1 mCi (0.7807 GBq) of Y-90 TheraSpheres on that date received approximately 36 percent of the prescribed dose. A previously administered dose to the same patient was delivered without incident. The patient and referring physician were notified, and there was no reported adverse impact to the patient. The investigation is ongoing, and a reactive inspection will be conducted next week to review procedures and identify the possible root cause. This event meets the criteria for a reportable event under 32 Ill. Adm. Code 335.1080 and was reported to the NRC on January 9, 2026.</br>Illinois item number: IL260001</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, 9 January 2026 +
IL-01037-02 +
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>.
06:20:12, 28 January 2026 +
16:27:00, 9 January 2026 +
0.435 d (10.45 hours, 0.0622 weeks, 0.0143 months) +
06:00:00, 9 January 2026 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.