Effectiveness of a novel real-time dosimeter in interventional radiology: a comparison of new and old radiation sensors

Yohei Inaba, Masaaki Nakamura, Koichi Chida, Masayuki Zuguchi

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Radiation dose management is important in interventional radiology (IR) procedures, such as percutaneous coronary intervention, to prevent radiation-induced injuries. Therefore, radiation dose should be monitored in real time during IR. This study evaluated the fundamental characteristics of a novel real-time skin dosimeter (RTSD) developed at our institution. In addition, we compared the performance of our new and old radiation sensors and that of a skin dose monitor (SDM), with ion chamber reference values. We evaluated the fundamental characteristics (e.g., energy dependence, dose dependence, and angular dependence) of the RTSD developed by us in the diagnostic X-ray energy range. The performance of our RTSD was similar to that of the SDM. In particular, the new radiation sensor of our RTSD demonstrated better dose rate dependence compared to the old sensor. In addition, the new sensor had the advantage of being small in size and thus minimally affecting the X-ray images compared to the old sensor. Therefore, the developed skin dosimeter and radiation sensor may be useful in real-time measurement of patients’ exposure to and multi-channel monitoring of radiation in IR procedures. The new dosimeter system can be recommended for visualization and management of the radiation dose to which the patients’ skin is exposed.

Original languageEnglish
Pages (from-to)445-450
Number of pages6
JournalRadiological Physics and Technology
Issue number4
Publication statusPublished - 2018 Dec 1


  • Interventional radiology
  • Radiation dose
  • Radiation skin injuries
  • Real-time skin dosimeter

ASJC Scopus subject areas

  • Radiation
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Radiology Nuclear Medicine and imaging


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