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Title of Journal: Eur Radiol

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Abbravation: European Radiology

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Springer-Verlag

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DOI

10.1016/0954-1810(88)90042-8

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1432-1084

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Impact of iterative reconstruction on CNR and SNR

Authors: B M Gramer D Muenzel V Leber AK von Thaden H Feussner A Schneider M Vembar N Soni E J Rummeny A M Huber
Publish Date: 2012/07/03
Volume: 22, Issue: 12, Pages: 2654-2661
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Abstract

ECGgated 256slice MDCT dynamic MPI was performed in six pigs after subtotal balloon occlusion of one artery Two 100 kVp protocols were compared high dose HD 150 mAs low dose LD 100 mAs HD images were reconstructed with filtered back projection FBP LD images with FBP and different strengths of IR L1 L4 and L7 IQ 5point scale SNR and CNR ischemic vs normal myocardium values derived from the HD FBP images and the different LD images were comparedMean SNR values for myocardium were 163 113 131 171 and 289 for the HD LD FBP LD L1 LD L4 and LD L7 reconstructions respectively Mean CNR values were 89 63 78 93 and 128 IQ was scored as 46 33 44 47 and 34 respectively A significant loss of IQ was observed for the LD L7 images compared to the HD FBP images P  005

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