open access

Vol 16, No 1 (2013)
Case Report
Submitted: 2013-02-08
Accepted: 2013-02-08
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False-positive defects on exercise 99mTc-sestamibi SPECT imaging, but not on dipyridamole 99mTc-sestamibi SPECT imaging, in a patient with right bundle branch block (RBBB)

Hamid Javadi, Sara Jallalat, Shahriar Semnani, Mehdi Mogharrabi, Iraj Nabipour, Moloud Abbaszadeh, Majid Assadi
DOI: 10.5603/NMR.2013.0009
·
Nucl. Med. Rev 2013;16(1):45-48.

open access

Vol 16, No 1 (2013)
Case Report
Submitted: 2013-02-08
Accepted: 2013-02-08

Abstract

False-positive findings with myocardial perfusion imaging (MPI)
have frequently been identified in the presence of left bundle
branch block (LBBB) and tend to lower the accuracy of MPI in
individuals with normal coronary angiographs. Pharmacologic
stress is recognized as the preferred method for MPI in patients
with LBBB. In contrast, very few studies have evaluated the effect
of right bundle branch block (RBBB) on MPI, and there is
no consensus regarding the selection of pharmacologic versus
exercise stress during MPI for the RBBB patient. In this study,
we present a 45-year-old man with RBBB, who has a normal coronary artery angiography, but who showed abnormal myocardial
perfusion with exercise MPI, and normal perfusion on
dipyridamole MPI. The aim of the study is to stimulate awareness
that the stress method selected for patients with RBBB can
potentially interfere with the accuracy of the data.

Abstract

False-positive findings with myocardial perfusion imaging (MPI)
have frequently been identified in the presence of left bundle
branch block (LBBB) and tend to lower the accuracy of MPI in
individuals with normal coronary angiographs. Pharmacologic
stress is recognized as the preferred method for MPI in patients
with LBBB. In contrast, very few studies have evaluated the effect
of right bundle branch block (RBBB) on MPI, and there is
no consensus regarding the selection of pharmacologic versus
exercise stress during MPI for the RBBB patient. In this study,
we present a 45-year-old man with RBBB, who has a normal coronary artery angiography, but who showed abnormal myocardial
perfusion with exercise MPI, and normal perfusion on
dipyridamole MPI. The aim of the study is to stimulate awareness
that the stress method selected for patients with RBBB can
potentially interfere with the accuracy of the data.
Get Citation

Keywords

99mTc-sestamibi; myocardial perfusion imaging; right bundle branch block (RBBB)

About this article
Title

False-positive defects on exercise 99mTc-sestamibi SPECT imaging, but not on dipyridamole 99mTc-sestamibi SPECT imaging, in a patient with right bundle branch block (RBBB)

Journal

Nuclear Medicine Review

Issue

Vol 16, No 1 (2013)

Pages

45-48

DOI

10.5603/NMR.2013.0009

Bibliographic record

Nucl. Med. Rev 2013;16(1):45-48.

Keywords

99mTc-sestamibi
myocardial perfusion imaging
right bundle branch block (RBBB)

Authors

Hamid Javadi
Sara Jallalat
Shahriar Semnani
Mehdi Mogharrabi
Iraj Nabipour
Moloud Abbaszadeh
Majid Assadi

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