Coronary artery disease: improved reproducibility of calcium scoring with an electron-beam CT volumetric method.

Callister, Tracy Q.; Cooil, Bruce; Raya, Sai Prasad; Lippolis, Nicholas J.; Russo, Donald J.; Raggi, Paolo

doi:10.1148/radiology.208.3.9722864

Cited by 700 publications

(384 citation statements)

References 18 publications

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“…(2)) and a volume Vol I with continuous (isotropic) interpolation (Eq. (3)) as proposed by Callister et al [11].…”

Section: Methodsmentioning

confidence: 90%

“…Non-linear operations are eliminated that may increase interscan variability. Isotropic interpolation procedures in between adjacent image slices can be used to reduce the influence of partial-volume errors for improved reproducibility [11].…”

Section: Methodsmentioning

confidence: 99%

“…High variability is particularly present for small amounts of calcification. Recently, alternative quantitative volumetric scoring methods have been developed that have improved interscan reproducibility [11]. Partial-volume errors introduced by contiguous acquisition with 3-mm slice width, long breathhold times of 25-40 s, and image artifacts due to inconsistent ECG triggering for arrhythmic heart rates have been identified as the main variability factors [2].…”

Section: Introductionmentioning

confidence: 99%

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Reproducibility of coronary calcium quantification in repeat examinations with retrospectively ECG-gated multisection spiral CT

et al. 2002

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High reproducibility is a key requirement for coronary calcium scoring in follow-up examinations. We investigated the interexamination reproducibility of calcium scoring with retrospectively ECG-gated multisection spiral CT (MSCT). Fifty patients were examined twice with MSCT. Slices were reconstructed with retrospective ECG gating in the diastolic phase with 3-mm slice width and up to 125-ms temporal resolution. We calculated the Agatston score, calcium volume with and without isotropic interpolation, and calcium mass, and derived the mean and median variability. We investigated the change of variability with use of 3-mm nonoverlapping and overlapping increments (2, 1.5, 1 mm). Use of overlapping increment results in considerably reduced interscan variability. We observed a minimum mean variability of 12% and a minimum median variability of 9% for the Agatston score. For volume and mass quantification we obtained a minimum mean variability of 7.5% and a minimum median variability of 5%. Multisection spiral CT enables coronary calcium quantification with high reproducibility in follow-up examinations mainly founded on image data with reduced partial-volume errors due to overlapping increment.

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“…(2)) and a volume Vol I with continuous (isotropic) interpolation (Eq. (3)) as proposed by Callister et al [11].…”

Section: Methodsmentioning

confidence: 90%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reproducibility of coronary calcium quantification in repeat examinations with retrospectively ECG-gated multisection spiral CT

et al. 2002

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“…Several articles describe methods for quantifying the calcium, 3,4 whereas others focus on the reproducibility of the calcium scoring. 5 The reason for the usage of EBCT was the much shorter acquisition time of EBCT compared to present-generation conventional computed tomography. However, with the advent of multislice computed tomography (MSCT) and an increased rotation time of the CT gantry, it became possible to scan the whole heart in a single breathhold.…”

Section: Cardiac Ctmentioning

confidence: 99%

“…* 2 , ** 3 , *** 4 , . 5 Thus, the acquisition of image data over multiple cardiac cycles in combination with sophisticated reconstruction algorithms 9,10 delivers a four-dimensional (3D volume + time) cardiac image data with a sufficient temporal and best spatial resolution available.…”

Section: Cardiac Ctmentioning

confidence: 99%

Localizing Calcifications in Cardiac CT Data Sets Using a New Vessel Segmentation Approach

2006

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The new generation of multislice computed tomography (CT) scanners allows for the acquisition of high-resolution images of the heart. Based on that image data, the heart can be analyzed in a noninvasive way-improving the diagnosis of cardiovascular malfunctions on one hand, and the planning of an eventually necessary intervention on the other. One important parameter for the evaluation of the severeness of a coronary artery disease is the number and localization of calcifications (hard plaques). This work presents a method for localizing these calcifications by employing a newly developed vessel segmentation approach. This extraction technique has been developed for, and tested with, contrast-enhanced CT data sets of the heart. The algorithm provides enough information to compute the vessel diameter along the extracted segment. An approach for automatically detecting calcified regions that combines diameter information and gray value analysis is presented. In addition, specially adapted methods for the visualization of these analysis results are described.

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Angiotensin-Converting Enzyme Inhibitors and Change in Aortic Valve Calcium

O’Brien¹,

Probstfield²,

Caulfield³

et al. 2005

Arch Intern Med

153

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Coronary artery disease: improved reproducibility of calcium scoring with an electron-beam CT volumetric method.

Cited by 700 publications

References 18 publications

Reproducibility of coronary calcium quantification in repeat examinations with retrospectively ECG-gated multisection spiral CT

Reproducibility of coronary calcium quantification in repeat examinations with retrospectively ECG-gated multisection spiral CT

Localizing Calcifications in Cardiac CT Data Sets Using a New Vessel Segmentation Approach

Angiotensin-Converting Enzyme Inhibitors and Change in Aortic Valve Calcium

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