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. Author manuscript; available in PMC: 2013 Jun 1.
Published in final edited form as: Invest Radiol. 2012 Jun;47(6):339–345. doi: 10.1097/RLI.0b013e3182479ec4

Table 2.

Results of average ± standard deviation results of the qualitative and quantitative image parameters. Table 2A demonstrates quantitative parameters, which include the prescribed scan time, comparing RRC and HRC in healthy volunteers. Note prescribed scan times generally differ from the actual times and are presented for theoretical technique comparison. Table 2B displays the results of image quality score in healthy volunteers. Table 2C compares the quality score values for HRC in patients and healthy volunteers. Table 2D shows the increase in sharpness and drop in SNR, CNR values of HRC in relation to RRC in healthy volunteers. P values less than 0.05 or 0.025 (when Bonferroni correction is applied) are statistically significant and displayed in red. (Myo= myocardium; Bld = Blood)

Table 2A
Healthy volunteers Scan time (min) Diameter (mm) SNR Bld SNR Myo CNR Sharpness All length (mm) RCA (mm) LM/LAD (mm)
HRC 8.55 ± 1.7 4.05 ± 0.48 12.13 ± 3.42 8.88 ± 1.94 3.25 ± 2.45 0.28mm−1 ± 0.11 77.16 ± 24.6 91.98 ± 23.92 62.34 ± 14.65
RRC 4.06 ± 0.36 4.06 ± 0.47 45.1 ± 15.5 19.81 ± 7.5 25.26 ± 10.75 0.19mm−1 ± 0.06 86.98 ± 30.25 108.58 ± 24.33 65.38 ± 17.41
P value <0.01 0.784 <0.01 <0.01 <0.01 0.01 0.125 0.013 0.336
Table 2B
Quality Score All Vessels RCA LM/LAD
HRC 2.9 ± 0.9 3.1 ± 0.7 2.7 ± 1.1
RRC 3.4 ± 0.7 3.6 ± 0.5 3.1 ± 0.9
P value 0.002 0.031 0.125
Table 2C
Quality Score HRC
Patients 2.8 ± 0.8
Healthy Volunteers 2.9 ± 0.9
P value 0.868
Table 2D
% increase sharpness 47%
% Drop Bld-SNR 72%
% Drop CNR 86%