[Development and Validation of Dose Management Software in IVR Utilizing Radiation Information System]

Area of Science:

• Medical Imaging and Radiology
• Radiation Dose Management
• Health Informatics

Background:

• Interventional radiology (IVR) relies on equipment display dose for dose management, aiming to comply with Japan diagnostic reference levels 2020 (DRLs 2020).
• Widespread adoption of dose management software utilizing radiation dose structured reports (RDSR) remains limited.
• Radiology information systems (RIS) offer potential for integrated dose management by recording procedures and lesions.

Purpose of the Study:

• To assess the utility of an in-house developed dose management software integrated with a radiology information system (RIS) for interventional radiology (IVR).
• To evaluate the software's ability to manage radiation doses in IVR procedures and ensure compliance with Japan diagnostic reference levels 2020 (DRLs 2020).

Main Methods:

• Analysis of 290 IVR cases (141 cardiac, 149 other regions) from July to September 2020.
• Evaluation of air kerma-area product, patient entrance reference point air kerma, and patient data (height, weight, BMI).
• Comparison of analysis time and accuracy between manual methods and the developed dose management software using paired t-tests.

Main Results:

• The in-house software significantly reduced analysis time for both cardiac (4180.25±1161.79s vs 36.25±15.32s) and other regions (4366.92±1393.19s vs 38.08±17.34s) (p<0.05).
• Analysis accuracy achieved was high, with 96.30% for cardiac and 98.89% for other regions.
• The software demonstrated efficient dose management capabilities within the IVR workflow.

Conclusions:

• The developed dose management software utilizing RIS is effective for interventional radiology.
• The software offers significant improvements in analysis time and accuracy for dose management.
• This tool supports adherence to Japan diagnostic reference levels 2020 (DRLs 2020) in clinical practice.