Analysis of patients receiving ≥ 100 mSv during a computed tomography intervention

Area of Science:

• Radiology
• Medical Imaging
• Radiation Oncology

Background:

• Computed tomography (CT)-guided interventions can involve significant radiation exposure.
• Understanding patient cohorts receiving high doses is crucial for risk assessment.

Purpose of the Study:

• To identify patients who received ≥ 100 mSv during a single CT-guided intervention.
• To analyze the clinical information and outcomes of this high-dose patient cohort.

Main Methods:

• Retrospective analysis of data from a dose-tracking platform (Radimetrics) from January 2013 to December 2017.
• Identification of patients receiving ≥ 100 mSv in a single CT-guided intervention.
• Review of medical records to assess short- and medium-term medical consequences up to 8 years post-intervention.

Main Results:

• 33 patients underwent 37 CT-guided interventions resulting in ≥ 100 mSv.
• Common procedures included ablations, myelograms, drainages, and biopsies.
• No deterministic or stochastic consequences were identified in the study cohort during 0.2 to 7 years of follow-up.

Conclusions:

• CT-guided interventions can infrequently result in single procedure doses of ≥ 100 mSv.
• Awareness of high-dose potential and long-term effects, especially in younger patients, is important.
• Consideration of alternative imaging or dose optimization is recommended when feasible.