Dose variations for biopsy, puncture and drainage under CT guidance: A national survey in 1709 patients

Laure Berny; Joël Greffier; Chris Serrand; Djamel Dabli; Fabien De Oliveira; Hélène de Forges; Jean-Paul Beregi; Julien Frandon

doi:10.1016/j.redii.2023.100025

Dose variations for biopsy, puncture and drainage under CT guidance: A national survey in 1709 patients

Res Diagn Interv Imaging. 2023 Mar 1:5:100025. doi: 10.1016/j.redii.2023.100025. eCollection 2023 Mar.

Authors

Laure Berny¹, Joël Greffier¹, Chris Serrand², Djamel Dabli¹, Fabien De Oliveira¹, Hélène de Forges¹, Jean-Paul Beregi¹, Julien Frandon¹

Affiliations

¹ Department of medical imaging, CHU de Nîmes, université de Montpellier, Medical Imaging Group Nîmes, place du Pr.-Robert-Debré, 30029 Nîmes, France.
² Department of biostatistics, clinical epidemiology, public health, and innovation in methodology (BESPIM), CHU de Nîmes, place du Pr.-Robert-Debré, 30029 Nîmes, France.

Abstract

Background: A nation-wide study recently published the dose reference levels for the main CT-guided interventional procedures in 5001 patients. We assessed the impact of patient's age, sex and targeted organ on the patient dose during thoracic and abdominopelvic biopsies and punctures/drainages.

Patients and methods: Data were extracted from the previous nationwide study. All biopsies, punctures and drainages for thoracic or abdominopelvic locations performed between January 2017 and June 2019 in all participating centers were included in the study. Multivariable analyses were carried out using a linear regression of the dose-length product (DLP) log, adjusted to age, sex, anatomical location, number of helical acquisitions and inclusion center.

Results: Of the 5001 patients of the initial study, 2383 benefited from thoracic or abdominopelvic procedures, including 674 percutaneous destructions excluded. 1709 patients (44 centers), 1045 men, 664 women, median age 64.4 ± 14.0 years were included. The mean DLP was 751.2 ± 642.7mGy.cm. It was significantly higher in men than women (p = 0.0005) and higher for abdominopelvic procedures than for thoracic locations (p<0.0001).

Conclusion: Doses delivered to patients for abdominal and thoracic biopsies and punctures/drainages performed under CT guidance depend on gender and location. Furthers studies taking into account the patient's morphology and anatomical location of the procedure would allow proposing finer dose reference levels.

Keywords: Multidetector computed tomography; Physics; Radiation exposure; Radiology, interventional.