Evaluation of the Dosimetry Needs and Practices for the Update of the Code of Practice for Dosimetry in Diagnostic Radiology (TRS-457)

Open for proposals

Project Type

Coordinated Research Project

Project Code

E24024

CRP

2262

Approved Date

24 March 2021

Status

2 - New - Collecting or Evaluating proposals

Description

Radiation dosimetry is the most important tool to monitor and verify that radiation medicine is performed safely and effectively. It is a crucial element in Quality Assurance programmes for diagnostic and interventional radiology. The proposed CRP will improve accuracy of dosimetry in diagnostic and interventional radiology by providing input for the update of the IAEA Technical Reports Series (TRS) No. 457 “Dosimetry in diagnostic radiology: an international code of practice”. It will also provide data on X ray imaging modalities that are not included in the current version of the document. The proposed CRP will provide information on which irradiation beam qualities are ideal for use when performing calibration/verification, identify suitable reference dosimeters and instruments for dosimetry measurements, provide for the development of calibration and dose measurement protocols and associated uncertainty analysis.  Radiation metrologists and clinical medical physicists will be invited to participate in this CRP.

Objectives

Standardization of radiology medical physics dosimetry instrumentation, equipment and procedures in laboratories and hospitals to support the update of the IAEA Technical Reports Series (TRS) No. 457 “Dosimetry in diagnostic radiology: an international code of practice”.

Specific objectives

To provide recommendations on the performance specifications for reference dosimeters in laboratory and clinical environments for different beam qualities (standard radiation beam qualities (RQR), radiation qualities for CT applications (RQT), radiation qualities for mammography applications (RQM), and other properties).

To assess the accuracy of measurements performed using semiconductor-based dosimeters (in standard radiation qualities (RQR), radiation qualities for mammography applications (RQM), radiation qualities for CT applications (RQT)), e.g. practical peak voltage (kVp), air kerma, air kerma rate, total filtration, half value layer (HVL), etc.

Develop and test harmonized methodologies for air kerma-area product (PKA) measurements relevant to calibration laboratories and end users at the hospitals using air kerma-area product meters in CBCT, dental radiology and interventional procedures.

To obtain international data pertaining to intra- and inter-scanner variations in measured and displayed CT dose indices.

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