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   left ventricular ejection fraction determined with the simulation of a very low-dose czt-spect protocol and an additional count-calibration on planar radionuclide angiographic data  
   
نویسنده tissot hubert ,roch véronique ,morel olivier ,veran nicolas ,perrin mathieu ,claudin marine ,verger antoine ,karcher gilles ,marie pierre-yves ,imbert laetitia
منبع journal of nuclear cardiology - 2019 - دوره : 26 - شماره : 5 - صفحه:1539 -1549
چکیده    To determine whether the left ventricular ejection fractions (efs), measured on a high-sensitivity czt single photon emission computed tomography (spect)-camera with a 70% reduction in recording times and a prevention of ef overestimation through an additional count-calibration, are concordant with reference ef from planar radionuclide angiography (2d-rna). an additional 10-minute czt-spect recording was performed in patients referred to 2d-rna for cardiomyopathy (n = 23) or chemotherapy monitoring (n = 50) with an in vivo red blood cell labeling with 850 mbq $$ {}^{{99{text{m}}}}{text{tco}}_{4}^{ - } $$ . the ef, obtained from czt-spect with 100% (spect100) or 30% (spect30) projection times and with a spect-count calibration on the 2d-rna counts of corresponding cavity volumes, were compared to ef from 2d-rna. strong and equivalent relationships were documented between the ef from 2d-rna and the calibrated ef from spect100 (y = 0.89x + 6.62; r2 = 0.87) and spect30 (y = 0.87x + 8.40; r2 = 0.85), and the mean ef from spect100 (54% ± 15%) and spect30 (53% ± 16%) were close to that from 2d-rna (55% ± 15%). however, upward shifts in these mean values were documented in the absence of count calibration for both spect100 (60% ± 18%) and spect30 (60% ± 18%). left ventricular ef be determined on a high-sensitivity czt-camera, a 70% reduction in injected activities, and an additional count-calibration for further enhancing the concordance with 2d-rna values.
کلیدواژه radionuclide angiography ,blood-pool spect ,czt-camera ,left ventricular ejection fraction ,calibration curve
آدرس université de lorraine, department of nuclear medicine and nancyclotep molecular imaging platform, france, department of nuclear medicine and nancyclotep molecular imaging platform, chru-nancy, france, université de franche-comté, france, department of nuclear medicine, chru-nancy, france, department of nuclear medicine, chru-nancy, france, department of nuclear medicine, chru-nancy, france, université de lorraine, department of nuclear medicine and nancyclotep molecular imaging platform, france, université de lorraine, department of nuclear medicine and nancyclotep molecular imaging platform, france, université de lorraine, department of nuclear medicine and nancyclotep molecular imaging platform, france, department of nuclear medicine and nancyclotep molecular imaging platform, chru-nancy, france. université de lorraine, france. hôpital de brabois, france
 
     
   
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