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Title: Measurement of absolute myocardial blood flow in humans using dynamic cardiac SPECT and 99mTc-tetrofosmin: Method and validation

Abstract

The objective of this study was to measure myocardial blood flow (MBF) in humans using 99mTc-tetrofosmin and dynamic single-photon emission computed tomography (SPECT). Dynamic SPECT using 99mTc-tetrofosmin and dynamic positron emission tomography (PET) was performed on a group of 16 patients. The SPECT data were reconstructed using a 4D-spatiotemporal iterative reconstruction method. The data corresponding to 9 patients were used to determine the flow-extraction curve for 99mTc-tefrofosmin while data from the remaining 7 patients were used for method validation. The nonlinear tracer correction parameters A and B for 99mTc-tefrofosmin were estimated for the 9 patients by fitting the flow-extraction curve K1 = F(1–Aexp(–B/F)) for K1 values estimated with 99mTc-tefrofosmin using SPECT and MBF values estimated with 13N-NH3 using PET. These parameters were then used to calculate MBF and coronary flow reserve (CFR) in three coronary territories (LAD, RCA, and LCX) using SPECT for an independent cohort of 7 patients. The results were then compared with that estimated with 13N-NH3 PET. The flow-dependent permeability surface-area product (PS) for 99mTc-tefrofosmin was also estimated. The estimated flow-extraction parameters for 99mTc-tefrofosmin were found to be A = 0.91 ± 0.11, B = 0.34 ± 0.20 (R2 = 0.49). The range of MBF in LAD,more » RCA, and LCX was 0.44-3.81 mL/min/g. The MBF between PET and SPECT in the group of independent cohort of 7 patients showed statistically significant correlation, r = 0.71 (P < .001). However, the corresponding CFR correlation was moderate r = 0.39 yet statistically significant (P = .037). The PS for 99mTc-tefrofosmin was (0.019 ± 0.10)*MBF + (0.32 ± 0.16). Dynamic cardiac SPECT using 99mTc-tetrofosmin and a clinical two-headed SPECT/CT scanner can be a useful tool for estimation of MBF.« less

Authors:
 [1];  [2];  [2];  [2];  [2];  [2];  [3];  [1];  [2];  [1]
  1. Univ. of California, San Francisco, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, San Francisco, CA (United States)
  3. Univ. of California, San Francisco, CA (United States); Univ. of Newcastle, Newcastle (Australia)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1379714
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Cardiology
Additional Journal Information:
Journal Volume: 24; Journal Issue: 1; Journal ID: ISSN 1071-3581
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; 60 APPLIED LIFE SCIENCES; Dynamic SPECT; myocardial blood flow quantification; tracer kinetics; ammonia PET

Citation Formats

Shrestha, Uttam, Sciammarella, Maria, Alhassen, Fares, Yeghiazarians, Yerem, Ellin, Justin, Verdin, Emily, Boyle, Andrew, Seo, Youngho, Botvinick, Elias H., and Gullberg, Grant T. Measurement of absolute myocardial blood flow in humans using dynamic cardiac SPECT and 99mTc-tetrofosmin: Method and validation. United States: N. p., 2015. Web. doi:10.1007/s12350-015-0320-3.
Shrestha, Uttam, Sciammarella, Maria, Alhassen, Fares, Yeghiazarians, Yerem, Ellin, Justin, Verdin, Emily, Boyle, Andrew, Seo, Youngho, Botvinick, Elias H., & Gullberg, Grant T. Measurement of absolute myocardial blood flow in humans using dynamic cardiac SPECT and 99mTc-tetrofosmin: Method and validation. United States. doi:10.1007/s12350-015-0320-3.
Shrestha, Uttam, Sciammarella, Maria, Alhassen, Fares, Yeghiazarians, Yerem, Ellin, Justin, Verdin, Emily, Boyle, Andrew, Seo, Youngho, Botvinick, Elias H., and Gullberg, Grant T. Tue . "Measurement of absolute myocardial blood flow in humans using dynamic cardiac SPECT and 99mTc-tetrofosmin: Method and validation". United States. doi:10.1007/s12350-015-0320-3. https://www.osti.gov/servlets/purl/1379714.
@article{osti_1379714,
title = {Measurement of absolute myocardial blood flow in humans using dynamic cardiac SPECT and 99mTc-tetrofosmin: Method and validation},
author = {Shrestha, Uttam and Sciammarella, Maria and Alhassen, Fares and Yeghiazarians, Yerem and Ellin, Justin and Verdin, Emily and Boyle, Andrew and Seo, Youngho and Botvinick, Elias H. and Gullberg, Grant T.},
abstractNote = {The objective of this study was to measure myocardial blood flow (MBF) in humans using 99mTc-tetrofosmin and dynamic single-photon emission computed tomography (SPECT). Dynamic SPECT using 99mTc-tetrofosmin and dynamic positron emission tomography (PET) was performed on a group of 16 patients. The SPECT data were reconstructed using a 4D-spatiotemporal iterative reconstruction method. The data corresponding to 9 patients were used to determine the flow-extraction curve for 99mTc-tefrofosmin while data from the remaining 7 patients were used for method validation. The nonlinear tracer correction parameters A and B for 99mTc-tefrofosmin were estimated for the 9 patients by fitting the flow-extraction curve K1 = F(1–Aexp(–B/F)) for K1 values estimated with 99mTc-tefrofosmin using SPECT and MBF values estimated with 13N-NH3 using PET. These parameters were then used to calculate MBF and coronary flow reserve (CFR) in three coronary territories (LAD, RCA, and LCX) using SPECT for an independent cohort of 7 patients. The results were then compared with that estimated with 13N-NH3 PET. The flow-dependent permeability surface-area product (PS) for 99mTc-tefrofosmin was also estimated. The estimated flow-extraction parameters for 99mTc-tefrofosmin were found to be A = 0.91 ± 0.11, B = 0.34 ± 0.20 (R2 = 0.49). The range of MBF in LAD, RCA, and LCX was 0.44-3.81 mL/min/g. The MBF between PET and SPECT in the group of independent cohort of 7 patients showed statistically significant correlation, r = 0.71 (P < .001). However, the corresponding CFR correlation was moderate r = 0.39 yet statistically significant (P = .037). The PS for 99mTc-tefrofosmin was (0.019 ± 0.10)*MBF + (0.32 ± 0.16). Dynamic cardiac SPECT using 99mTc-tetrofosmin and a clinical two-headed SPECT/CT scanner can be a useful tool for estimation of MBF.},
doi = {10.1007/s12350-015-0320-3},
journal = {Journal of Nuclear Cardiology},
number = 1,
volume = 24,
place = {United States},
year = {2015},
month = {12}
}

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