Rb-82 PET myocardial perfusion imaging is superior to Tc-99m-labelled agent SPECT in patients with known or suspected coronary artery disease
Por:
Flotats, A, Bravo, PE, Fukushima, K, Chaudhry, MA, Merrill, J, Bengel, FM
Publicada:
1 ago 2012
Resumen:
We compared the quality, interpretive confidence and interreader agreement between SPECT and PET myocardial perfusion imaging (MPI) in the same group of patients.
The study group comprised 27 patients (age 55 +/- 8.5 years, 12 men) with known or suspected coronary artery disease (CAD) who had undergone gated rest/stress MPI with Tc-99m-labelled agent SPECT (with and without attenuation correction, AC), and subsequent clinical confirmation with Rb-82 PET. Three experienced readers blinded to the clinical information interpreted all MPI studies.
Interreader agreement was significantly superior for PET studies than for SPECT studies. Following consensus interpretation, the quality of 22 % of the non-AC SPECT studies, 33 % of the AC SPECT studies and 63 % of the PET studies was assessed as excellent or good (p = 0.016). Interpretations were definitely normal or abnormal in 7 % of non-AC SPECT studies, 30 % of AC SPECT studies and 85 % of PET studies (p = 0.046). In 13 patients who had received either invasive coronary angiography or CT angiography with no significant CAD, the true-positive rate for significant CAD was higher for PET, and the true-negative rate was equal for PET and AC SPECT, and lower for non-AC SPECT.
Rb-82 PET MPI, used as a confirmatory test after SPECT, offers improved image quality, interpretive confidence and interreader agreement.
Filiaciones:
Flotats, A:
Univ Autonoma Barcelona, Dept Nucl Med, Hosp Santa Creu & St Pau, Barcelona 08025, Spain
Johns Hopkins Univ, Sch Med, Div Nucl Med, Russell H Morgan Dept Radiol & Radiol Sci, Baltimore, MD USA
Bravo, PE:
Johns Hopkins Univ, Sch Med, Div Nucl Med, Russell H Morgan Dept Radiol & Radiol Sci, Baltimore, MD USA
Fukushima, K:
Johns Hopkins Univ, Sch Med, Div Nucl Med, Russell H Morgan Dept Radiol & Radiol Sci, Baltimore, MD USA
Chaudhry, MA:
Johns Hopkins Univ, Sch Med, Div Nucl Med, Russell H Morgan Dept Radiol & Radiol Sci, Baltimore, MD USA
Merrill, J:
Johns Hopkins Univ, Sch Med, Div Nucl Med, Russell H Morgan Dept Radiol & Radiol Sci, Baltimore, MD USA
Bengel, FM:
Johns Hopkins Univ, Sch Med, Div Nucl Med, Russell H Morgan Dept Radiol & Radiol Sci, Baltimore, MD USA
Hannover Med Sch, Dept Nucl Med, D-3000 Hannover, Germany
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