Diagnostic efficacy of a low-dose 32-projection SPECT 99m Tc- sestamibi myocardial perfusion imaging protocol in routine practice

Ming Che Wu, Kun Chou Chin, Ku Hung Lin, Nan-Tsing Chiu

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Background 99m Tc-labeled tracers can provide better imaging quality than does 201 TI for myocardial perfusion imaging (MPI). Nevertheless, a large study showed no significant difference in diagnostic efficacy, implying that image quality, though not optimal, may be still adequate for reliable interpretation. We thus proposed a suboptimal low-dose 32-projection single-photon emission computed tomography (SPECT) 99m Tc-sestamibi ( 99m Tc-methoxyisobutylisonitrile) MPI protocol and evaluated its diagnostic efficacy. Methods A total of 1007 patients undergoing the proposed rest-stress MPI protocol were included in the study for analysis. Among them, 218 had coronary angiography, which was used as the 'gold standard' for evaluating sensitivity and specificity. The normalcy rate was obtained from 47 patients with a low cardiovascular risk. The injected dosage for 99m Tc-methoxyisobutylisonitrile resting and dipyridamole stress imaging is 185 and 555 MBq, respectively, with an interval of about 2 h between the two injections. Most of the patients completed the whole MPI within 3h. Results Using this protocol, the sensitivity and specificity of the 218 patients with subsequent coronary angiography for determining coronary artery disease were 95 and 63%, respectively. The normalcy rate was 87%. Both the rest and stress images were adequate for confident interpretation. Conclusion The proposed low-dose 32-projection SPECT protocol has a diagnostic efficacy comparable with that reported in the literature, most of which used a higher dose and 64-projection SPECT, with additional benefits of lower radiation exposure, lower cost, and shorter study time. copy; 2009 Wolters Kluwer Health|Lippincott Williams & Wilkins.

Original languageEnglish
Pages (from-to)140-147
Number of pages8
JournalNuclear Medicine Communications
Volume30
Issue number2
DOIs
Publication statusPublished - 2009 Feb 1

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Myocardial Perfusion Imaging
Single-Photon Emission-Computed Tomography
Coronary Angiography
Sensitivity and Specificity
Dipyridamole
Coronary Artery Disease
Costs and Cost Analysis
Injections
Health

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

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title = "Diagnostic efficacy of a low-dose 32-projection SPECT 99m Tc- sestamibi myocardial perfusion imaging protocol in routine practice",
abstract = "Background 99m Tc-labeled tracers can provide better imaging quality than does 201 TI for myocardial perfusion imaging (MPI). Nevertheless, a large study showed no significant difference in diagnostic efficacy, implying that image quality, though not optimal, may be still adequate for reliable interpretation. We thus proposed a suboptimal low-dose 32-projection single-photon emission computed tomography (SPECT) 99m Tc-sestamibi ( 99m Tc-methoxyisobutylisonitrile) MPI protocol and evaluated its diagnostic efficacy. Methods A total of 1007 patients undergoing the proposed rest-stress MPI protocol were included in the study for analysis. Among them, 218 had coronary angiography, which was used as the 'gold standard' for evaluating sensitivity and specificity. The normalcy rate was obtained from 47 patients with a low cardiovascular risk. The injected dosage for 99m Tc-methoxyisobutylisonitrile resting and dipyridamole stress imaging is 185 and 555 MBq, respectively, with an interval of about 2 h between the two injections. Most of the patients completed the whole MPI within 3h. Results Using this protocol, the sensitivity and specificity of the 218 patients with subsequent coronary angiography for determining coronary artery disease were 95 and 63{\%}, respectively. The normalcy rate was 87{\%}. Both the rest and stress images were adequate for confident interpretation. Conclusion The proposed low-dose 32-projection SPECT protocol has a diagnostic efficacy comparable with that reported in the literature, most of which used a higher dose and 64-projection SPECT, with additional benefits of lower radiation exposure, lower cost, and shorter study time. copy; 2009 Wolters Kluwer Health|Lippincott Williams & Wilkins.",
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Diagnostic efficacy of a low-dose 32-projection SPECT 99m Tc- sestamibi myocardial perfusion imaging protocol in routine practice . / Wu, Ming Che; Chin, Kun Chou; Lin, Ku Hung; Chiu, Nan-Tsing.

In: Nuclear Medicine Communications, Vol. 30, No. 2, 01.02.2009, p. 140-147.

Research output: Contribution to journalArticle

TY - JOUR

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N2 - Background 99m Tc-labeled tracers can provide better imaging quality than does 201 TI for myocardial perfusion imaging (MPI). Nevertheless, a large study showed no significant difference in diagnostic efficacy, implying that image quality, though not optimal, may be still adequate for reliable interpretation. We thus proposed a suboptimal low-dose 32-projection single-photon emission computed tomography (SPECT) 99m Tc-sestamibi ( 99m Tc-methoxyisobutylisonitrile) MPI protocol and evaluated its diagnostic efficacy. Methods A total of 1007 patients undergoing the proposed rest-stress MPI protocol were included in the study for analysis. Among them, 218 had coronary angiography, which was used as the 'gold standard' for evaluating sensitivity and specificity. The normalcy rate was obtained from 47 patients with a low cardiovascular risk. The injected dosage for 99m Tc-methoxyisobutylisonitrile resting and dipyridamole stress imaging is 185 and 555 MBq, respectively, with an interval of about 2 h between the two injections. Most of the patients completed the whole MPI within 3h. Results Using this protocol, the sensitivity and specificity of the 218 patients with subsequent coronary angiography for determining coronary artery disease were 95 and 63%, respectively. The normalcy rate was 87%. Both the rest and stress images were adequate for confident interpretation. Conclusion The proposed low-dose 32-projection SPECT protocol has a diagnostic efficacy comparable with that reported in the literature, most of which used a higher dose and 64-projection SPECT, with additional benefits of lower radiation exposure, lower cost, and shorter study time. copy; 2009 Wolters Kluwer Health|Lippincott Williams & Wilkins.

AB - Background 99m Tc-labeled tracers can provide better imaging quality than does 201 TI for myocardial perfusion imaging (MPI). Nevertheless, a large study showed no significant difference in diagnostic efficacy, implying that image quality, though not optimal, may be still adequate for reliable interpretation. We thus proposed a suboptimal low-dose 32-projection single-photon emission computed tomography (SPECT) 99m Tc-sestamibi ( 99m Tc-methoxyisobutylisonitrile) MPI protocol and evaluated its diagnostic efficacy. Methods A total of 1007 patients undergoing the proposed rest-stress MPI protocol were included in the study for analysis. Among them, 218 had coronary angiography, which was used as the 'gold standard' for evaluating sensitivity and specificity. The normalcy rate was obtained from 47 patients with a low cardiovascular risk. The injected dosage for 99m Tc-methoxyisobutylisonitrile resting and dipyridamole stress imaging is 185 and 555 MBq, respectively, with an interval of about 2 h between the two injections. Most of the patients completed the whole MPI within 3h. Results Using this protocol, the sensitivity and specificity of the 218 patients with subsequent coronary angiography for determining coronary artery disease were 95 and 63%, respectively. The normalcy rate was 87%. Both the rest and stress images were adequate for confident interpretation. Conclusion The proposed low-dose 32-projection SPECT protocol has a diagnostic efficacy comparable with that reported in the literature, most of which used a higher dose and 64-projection SPECT, with additional benefits of lower radiation exposure, lower cost, and shorter study time. copy; 2009 Wolters Kluwer Health|Lippincott Williams & Wilkins.

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