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Radiation Exposure of Interventional Radiologists During Computed Tomography Fluoroscopy-Guided Renal Cryoablation and Lung Radiofrequency Ablation: Direct Measurement in a Clinical Setting

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Abstract

Introduction

Computed tomography (CT) fluoroscopy-guided renal cryoablation and lung radiofrequency ablation (RFA) have received increasing attention as promising cancer therapies. Although radiation exposure of interventional radiologists during these procedures is an important concern, data on operator exposure are lacking.

Materials and Methods

Radiation dose to interventional radiologists during CT fluoroscopy-guided renal cryoablation (n = 20) and lung RFA (n = 20) was measured prospectively in a clinical setting. Effective dose to the operator was calculated from the 1-cm dose equivalent measured on the neck outside the lead apron, and on the left chest inside the lead apron, using electronic dosimeters. Equivalent dose to the operator’s finger skin was measured using thermoluminescent dosimeter rings.

Results

The mean (median) effective dose to the operator per procedure was 6.05 (4.52) μSv during renal cryoablation and 0.74 (0.55) μSv during lung RFA. The mean (median) equivalent dose to the operator’s finger skin per procedure was 2.1 (2.1) mSv during renal cryoablation, and 0.3 (0.3) mSv during lung RFA.

Conclusion

Radiation dose to interventional radiologists during renal cryoablation and lung RFA were at an acceptable level, and in line with recommended dose limits for occupational radiation exposure.

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Authors and Affiliations

  1. Department of Radiology, Okayama University Medical School, 2-5-1 Shikatacho, Kitaku, Okayama, 700-8558, Japan

    Yusuke Matsui, Takao Hiraki, Hideo Gobara, Toshihiro Iguchi, Hiroyasu Fujiwara, Takahiro Kawabata & Susumu Kanazawa

  2. Central Division of Radiology, Okayama University Hospital, 2-5-1 Shikatacho, Kitaku, Okayama, 700-8558, Japan

    Takatsugu Yamauchi & Takuya Yamaguchi

Authors
  1. Yusuke Matsui
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  2. Takao Hiraki
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  3. Hideo Gobara
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  4. Toshihiro Iguchi
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  5. Hiroyasu Fujiwara
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  6. Takahiro Kawabata
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  7. Takatsugu Yamauchi
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  8. Takuya Yamaguchi
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  9. Susumu Kanazawa
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Corresponding author

Correspondence to Takao Hiraki.

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Conflict of Interest

Radiation measurement service with TLD rings was provided free of charge for this study by Nagase Landauer, LTD.

Ethics Approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee, and with the 1964 Helsinki Declaration and its later amendments, or comparable ethical standards.

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Matsui, Y., Hiraki, T., Gobara, H. et al. Radiation Exposure of Interventional Radiologists During Computed Tomography Fluoroscopy-Guided Renal Cryoablation and Lung Radiofrequency Ablation: Direct Measurement in a Clinical Setting. Cardiovasc Intervent Radiol 39, 894–901 (2016). https://doi.org/10.1007/s00270-016-1308-3

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  • DOI: https://doi.org/10.1007/s00270-016-1308-3

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