Setting “Typical” Diagnostic Reference Levels for most common Computed Tomography guided Interventional procedures
Journal Title: Hellenic Journal of Radiology - Year 2019, Vol 4, Issue 1
Abstract
Purpose: The new European Radiation Protection Law and International Radiation Protection Recommendation have stressed the need to monitor high radiation dose imaging examinations involving Computed Tomography (CT). There are no known diagnostic reference levels (DRLs) for CT-guided interventions. The scope of the study was to evaluate radiation doses and define typical DRLs. Material and Methods: The study was conducted in a tertiary referral hospital. The most frequent consecutive CT-guided procedures performed without use of fluoroscopy within a period of 17 months included biopsies (n=31), microwave ablations of malignant liver lesions (n=12), abscess drainages (n=45) and nephrostomies (n=15). A total of 103 CT-guided interventions performed by a single interventional radiologist (>20 years of experience) were reviewed. Using the CT DICOM data, all technical and dosimetric data were retrospectively collected for analysis. Results: There was a large variation in number of images (N) obtained and dose length product (DLP). N varied between patients depending on complexity of case. Limited dose comparison was possible due to actual absence of dosimetric data in the recent literature. Typical DLRs were established: 980, 790, 1380 and 850 mGy.cm for biopsy, drainage, ablation and nephrostomy respectively. Conclusions: Typical DLRs were established as per the latest International Commission on Radiological Protection report 135 definition for CT-guided interventional procedures without use of fluoroscopy. These could serve as a basis for in-house and/or national values. As results showed that complexity of clinical case greatly affects number of slices and thus radiation dose, the authors plan to further investigate how case complexity may affect radiation dose.
Authors and Affiliations
Virginia Tsapaki, Dimitrios Fagkrezos, Sotiria Triantopoulou, Sofia Gourtsoyianni, Niki Lama, Charikleia Triantopoulou, Petros Maniatis
Keywords
Related Articles
- EP ID EP533188
- DOI -
- Views 121
- Downloads 0
Reducing patient’s psychological stress. A guide for MR technologists
When performing magnetic resonance imaging (MRI) in the clinical setting, the patient experiences many psychological issues, mainly due to the nature of the examination, the structure of the magnet and the anxiety relate...
Comparative study evaluating pain after hepatectomy versus percutaneous microwave ablation in hepatocellular carcinoma patients: retrospective analysis of a single center’s experience
Purpose: To compare post-therapeutic pain and analgesia following surgical hepatectomy versus image-guided percutaneous microwave ablation (MWA) for the treatment of hepatocellular carcinoma (HCC). Material and Methods:...
The impact of integrated circuit detector technology in routine MDCT: Improved image quality compared to conventional detector design for constant SSDE
Purpose: The aim of this study was to compare the image quality and radiation dose of routine CT scans acquired with a third-generation scanner built with integrated circuit detector technology (Stellar®-detector) to tho...
Contemporary concepts and imaging findings in paediatric cystic kidney disease
The purpose of this article is to review the renal cystic diseases in children with regard to classification, genetic background, antenatal and postnatal ultrasonographic appearances and evolution of findings in childhoo...
Late-onset restless legs syndrome evaluated at night-hours with resting-state fMRI of the brain and voxel-based morphometry
Purpose: The aim of the study was to investigate the resting state networks and brain volumetric changes in patients with late onset restless legs syndrome (lRLS). Material and Methods: Nine untreated lRLS patients (m...