European Radiology

, Volume 22, Issue 6, pp 1240–1249 | Cite as

A national patient dose survey and setting of reference levels for interventional radiology in Bulgaria

  • R. Zotova
  • J. Vassileva
  • J. Hristova
  • M. Pirinen
  • H. Järvinen
Interventional

Abstract

Objectives

A national study on patient dose values in interventional radiology and cardiology was performed in order to assess current practice in Bulgaria, to estimate the typical patient doses and to propose reference levels for the most common procedures.

Methods

Fifteen units and more than 1,000 cases were included. Average values of the measured parameters for three procedures—coronary angiography (CA), combined procedure (CA + PCI) and lower limb arteriography (LLA)—were compared with data published in the literature.

Results

Substantial variations were observed in equipment and procedure protocols used. This resulted in variations in patient dose: air-kerma area product ranges were 4–339, 6–1,003 and 0.2–288 Gy cm2 for CA, CA + PCI and LLA respectively. Reference levels for air kerma-area product were proposed: 40 Gy cm2 for CA, 140 Gy cm2 for CA + PCI and 45 Gy cm2 for LLA. Auxiliary reference intervals were proposed for other dose-related parameters: fluoroscopy time, number of images and entrance surface air kerma rate in fluoroscopy and cine mode.

Conclusions

There is an apparent necessity for improvement in the classification of peripheral procedures and for standardisation of the protocols applied. It is important that patient doses are routinely recorded and compared with reference levels.

Key Points

Patient doses in interventional radiology are high and vary greatly

Better standardisation of procedures and techniques is needed to improve practice

Dose reference levels for most common procedures are proposed

Keywords

Interventional radiology Interventional cardiology Radiation protection Patient dosimetry Patient dose Reference levels 

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Copyright information

© European Society of Radiology 2012

Authors and Affiliations

  • R. Zotova
    • 1
  • J. Vassileva
    • 1
  • J. Hristova
    • 1
  • M. Pirinen
    • 2
  • H. Järvinen
    • 2
  1. 1.National Centre of Radiobiology and Radiation ProtectionSofiaBulgaria
  2. 2.Radiation and Nuclear Safety Authority (STUK)HelsinkiFinland

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