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Relation between wall thickening on gated perfusion SPECT and functional recovery after coronary revascularization in patients with previous myocardial infarction

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European Journal of Nuclear Medicine and Molecular Imaging Aims and scope Submit manuscript

Abstract

Purpose

This study aimed to evaluate whether wall thickening analysis by gated perfusion single-photon emission computed tomography (SPECT) is useful in predicting functional recovery after revascularization.

Methods

Forty-one patients with previous myocardial infarction and left ventricular (LV) dysfunction (ejection fraction, EF, 36±6%) who were scheduled for revascularization underwent rest 99mTc-sestamibi gated SPECT.

Results

Of 131 akinetic or dyskinetic segments at baseline echocardiography, 82 (63%) recovered after revascularization. Compared with wall thickening analysis, perfusion imaging provided higher sensitivity (78% vs 50%, P<0.0001) and specificity (80% vs 71%, P<0.0005). Among segments with ≥55% sestamibi uptake (viable), those with detectable wall thickening had a higher likelihood of functional recovery than those with absent wall thickening (95% vs 77%, P<0.05). In segments with improved function, the absence of wall thickening was associated with lower sestamibi activity than was observed when detectable wall thickening was present (58±14% vs 71±13%, P<0.0005). An increase in EF of ≥5% was detectable in 22 (54%) patients. For the prediction of EF improvement, perfusion imaging provided a higher sensitivity than wall thickening analysis (68% vs 41%, P<0.05), while specificity was not significantly different (68% vs 74%). The prevalence of patients with functional recovery did not change when wall thickening analysis was considered in addition to perfusion status (73% in patients with detectable wall thickening and 70% in those without; P=NS).

Conclusion

In patients with coronary artery disease, wall thickening analysis by gated perfusion SPECT provides additional information compared with perfusion data for the prediction of segmental functional recovery. However, on a patient basis, wall thickening assessment seems to be of more limited value than perfusion status.

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Authors and Affiliations

  1. Institute of Internal Medicine, Cardiology and Heart Surgery, University Federico II, Naples, Italy

    Mario Petretta & Letizia Spinelli

  2. Department of Biomorphological and Functional Sciences, Institute of Biostructures and Bioimaging of the National Council of Research, University Federico II, Via Pansini 5, 80131, Naples, Italy

    Giovanni Storto, Wanda Acampa, Valeria Sansone, Laura Evangelista & Alberto Cuocolo

  3. IRCCS Neuromed, Pozzilli, Italy

    Giovanni Storto & Alberto Cuocolo

Authors
  1. Mario Petretta
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  2. Giovanni Storto
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  3. Wanda Acampa
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  4. Valeria Sansone
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  5. Laura Evangelista
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  6. Letizia Spinelli
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  7. Alberto Cuocolo
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Correspondence to Alberto Cuocolo.

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Petretta, M., Storto, G., Acampa, W. et al. Relation between wall thickening on gated perfusion SPECT and functional recovery after coronary revascularization in patients with previous myocardial infarction. Eur J Nucl Med Mol Imaging 31, 1599–1605 (2004). https://doi.org/10.1007/s00259-004-1613-y

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  • DOI: https://doi.org/10.1007/s00259-004-1613-y

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