How to establish and use local diagnostic reference levels: an ESR EuroSafe Imaging expert statement (original) (raw)

Calculating local CT Diagnostic Reference Levels (DRLs) for SPECT/CT studies

Calculating Local CT Diagnostic Reference Levels (DRLs), for SPECT/CT Studies, 2016

Aim Data was collected to establish local Diagnostic Reference Levels (DRLs) for the CT component of our most common SPECT/CT studies. Methods 432 SPECT/CT scans were analysed from Dec 2014 - Dec 2015. CT dose values of CTDIVol (mGy) and DLP (mGycm) were recorded as well as patient’s weight and the anatomical area, for different scan procedures. Octreotide, MIBG and Lutetium scans, were grouped together as neuro-endocrine tumour (NET) studies. DRLs for CTDIVol and DLP were calculated as the 75th percentile, from patients weighing 50-90kg following IPEM Report 88. Results CTDIVol and DLP DRLs are given below for: • Hepato-Biliary scans: 2.2mGy and 93mGycm • I131 post-ablative scans: 2.4mGy and 98mGycm • Parathyroid scans: 2.6mGy and 107mGycm (with 2 SPECT/CT scans giving a total study DLP of 215mGycm) • NET studies: 2.2mGy and 171mGycm (ranging from 2.0mGy and 84mGYcm for an Abdo, Pelvis to 2.43mGy and 279mGycm for Head, Chest, Abdo, Pelvis) • All Bone scans: 11.8mGy and 461mGycm (ranging from 2.2mGy and 91mGycm for low-dose localisation CT of the torso to 16.0mGy and 574mGycm for diagnostic non-contrast CT of the lumbar spine) Conclusion Local DRLs were created and can be compared with initial data released by the IPEM working party on Hybrid CT DRLs.

Radiology patient dosage monitoring for local diagnostic reference level

International research journal of engineering, IT & scientific research, 2019

The utilization of radiation for health in Indonesia shows a significant increase, it can be seen from the increasing number of modalities of ionizing radiation sources used and the types of medical actions carried out with the help of radiation. The use of radiation must be monitored to ensure the protection and safety of workers, patients, and the community. In Government Regulation No. 33/2007 which regulates radiation safety for workers, the community and the environment, it can be seen that one of the protection requirements that must be met in the utilization of radiation is the optimization of radiation protection and safety. In diagnostic and interventional radiology, optimization can be interpreted as an attempt to make the dose received by patients as low as possible while maintaining optimum image quality. In this study, the effort to optimize patient dose is carried out on general radiography with the application of Si-INTAN (National Patient Dose Data Information System).