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64 slice MDCT generally underestimates coronary calcium scores as compared to EBT: A phantom study
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10.1118/1.2750733
/content/aapm/journal/medphys/34/9/10.1118/1.2750733
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/34/9/10.1118/1.2750733

Figures

Image of FIG. 1.
FIG. 1.

Anthropomorphic cardio CT phantom.

Image of FIG. 2.
FIG. 2.

Correlation of Agatston score between CT and EBT in (a) sequential and (b) spiral modes for system (red) and system (blue). The linear regression coefficient and correlation coefficient are given.

Image of FIG. 3.
FIG. 3.

Correlation of Volume score between CT and EBT in (a) sequential and (b) spiral modes for system (red) and system (blue). The linear regression coefficient and correlation coefficient are given.

Image of FIG. 4.
FIG. 4.

Average deviation in percentage of (a) the total Agatston score and (b) the total Volume score of all inserts obtained in the experiment without position adjustment compared with the experiment with position adjustment for EBT and systems and in sequential and spiral modes.

Image of FIG. 5.
FIG. 5.

Deviation of (a) Agatston score and (b) Volume score as a function of absolute score of the individual seven inserts plotted on a double log scale. The CAC scores of systems and in sequential and spiral modes are fitted to an exponential trend line. The results of the fit and the 95% confidence bands are shown.

Tables

Generic image for table
TABLE I.

Properties of the seven artificial calcifications used in the anthropomorphic cardiac CT phantom.

Generic image for table
TABLE II.

Average Agatston and Volume scores with standard deviation of the seven artificial calcifications measured on EBT, System , and System in sequential and spiral modes. Significant values of the paired t-test between the EBT and CT results are displayed in italic.

Generic image for table
TABLE III.

Comparison of Agatston and Volume scores obtained in spiral vs sequential mode on System and System . Significant different values between spiral and sequential scores are displayed in italic.

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/content/aapm/journal/medphys/34/9/10.1118/1.2750733
2007-08-10
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: 64 slice MDCT generally underestimates coronary calcium scores as compared to EBT: A phantom study
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/34/9/10.1118/1.2750733
10.1118/1.2750733
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