Nuclear Cardiology Practices and Radiation Exposure in the Oceania Region: Results From the IAEA Nuclear Cardiology Protocols Study (INCAPS)

Sinjini Biswas, Nathan Better, Thomas N B Pascual, Mathew Mercuri, João V. Vitola, Ganesan Karthikeyan, James Westcott, Erick Alexánderson, Adel H. Allam, Mouaz H. Al-Mallah, Henry Hee Seung Bom, Salah E. Bouyoucef, Albert Flotats, Scott Jerome, Philip A. Kaufman, Vikram Lele, Osnat Luxenburg, John J. Mahmarian, Leslee J. Shaw, S. Richard UnderwoodMadan Rehani, Ravi Kashyap, Maurizio Dondi, Diana Paez, Andrew J. Einstein

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Background There is concern about radiation exposure with radionuclide myocardial perfusion imaging (MPI). This sub-study of the International Atomic Energy Agency (IAEA) Nuclear Cardiology Protocols Study reports radiation doses from MPI, and use of dose-optimisation protocols in Australia and New Zealand (ANZ), and compares them with data from the rest of the world. Methods Data were collected from 7911 MPI studies performed in 308 laboratories worldwide in one week in 2013, including 439 MPI studies from 34 ANZ laboratories. For each laboratory, effective radiation dose (ED) and a quality index (QI) score (out of 8) based on pre-specified “best practices” was determined. Results In ANZ patients, ED ranged from 0.9-17.9 milliSievert (mSv). Median ED was similar in ANZ compared with the rest of the world (10.0 (IQR: 6.5-11.7) vs. 10.0 (IQR 6.4-12.6, P=0.15), as were mean QI scores (5.5±0.7 vs. 5.4±1.3, P=0.84). Use of stress-only imaging (17.6% vs. 31.8% of labs, P=0.09) and weight-based dosing of technetium-99m (14.7% vs. 30.3%, P=0.07) was lower in ANZ compared with the rest of the world but this difference was not statistically significant. Median ED was significantly lower in metropolitan versus non-metropolitan laboratories (10.1 mSv vs. 11.6 mSv, P<0.01), although mean QI scores were similar (5.4±0.8 vs. 5.5±0.7, P=0.75). Conclusion Across ANZ, there is variability in ED from MPI, and use of radiation safety practices, particularly between metropolitan and non-metropolitan laboratories. Overall, ANZ laboratories have a similar median ED to laboratories in the rest of the world.

Original languageEnglish (US)
Pages (from-to)25–34
Number of pages10
JournalHeart Lung and Circulation
Volume26
Issue number1
DOIs
StatePublished - Jan 2017

Keywords

  • Myocardial perfusion imaging
  • Radiation exposure

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine

Fingerprint Dive into the research topics of 'Nuclear Cardiology Practices and Radiation Exposure in the Oceania Region: Results From the IAEA Nuclear Cardiology Protocols Study (INCAPS)'. Together they form a unique fingerprint.

Cite this