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Influence of increasing convolution kernel filtering on plaque imaging with multislice CT using an ex-vivo model of coronary angiography

(2005) RADIOLOGIA MEDICA. 110(3). p.234-240
Author
Organization
Abstract
PURPOSE: To assess the variability in attenuation of coronary plaques with multislice CT-angiography (MSCT-CA) in an ex-vivo model with varying convolution kernels. MATERIALS AND METHODS: MSCT-CA (Sensation 16, Siemens) was performed in three ex-vivo left coronary arteries after instillation of contrast material solution (Iomeprol 400 mgI/ml, dilution: 1/80). The specimens were placed in oil to simulate epicardial fat. Scan parameters: slices 16/0.75 mm, rotation time 375 ms, feed/rotation 3.0 mm, mAs 500, slice thickness 1 mm, and FOV 50 mm. Datasets were reconstructed using 4 different kernels (B30f-smooth, B36f-medium smooth, B46f-medium, and B60f-sharp). Each scan was scored for the presence of plaques. Once a plaque was detected, the operator performed attenuation measurements (HU) in coronary lumen, oil, calcified and soft plaque tissue using the same settings in all datasets. The results were compared with T-test and correlated with Pearson's test. RESULTS: Overall, 464 measurements were performed. Significant differences (p<0.05) were found for the mean attenuation of lumen (B30f/B36f, B30f/B60f, B36f/B46f, B36f/B60f, and B46f/B60f), oil (B30f/B36f, B30f/B46f, B30f/B60f, B36f/B46f, and B46f/B60f), calcium (all kernels), and plaque (B30f/B36f, B30f/B46f, B30f/B60f, and B46f/B60f) using 4 different kernels. The attenuation values (mean+/-SD) within the lumen (246+/-6, 215+/-13, 248+/-5, and 270+/-7), oil (-123+/-3, -127+/-1, -121+/-6, and -127+/-4), calcified plaque tissue (703+/-334, 739+/-364, 817+/-381, and 1181+/-503), and soft plaque tissue (134+/-56, 111+/-49, 120+/-56, and 102+/-41) showed high correlation (p<0.001) when attenuation of all structures were compared in different kernels. CONCLUSIONS: Use of sharper convolution kernels significantly increases the attenuation of the calcium within coronary plaques and reduces the attenuation of soft plaque tissue.
Keywords
convolution kernels, SPIRAL COMPUTED-TOMOGRAPHY, coronary plaque, coronary angiography, multislice computed tomography, MORPHOLOGY, RESTENOSIS, MECHANISMS, ANGIOPLASTY, PATHOGENESIS, ACCURACY, ARTERY DISEASE, ATHEROSCLEROTIC PLAQUE, INTRAVASCULAR ULTRASOUND

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MLA
Cademartiri, Filippo, et al. “Influence of Increasing Convolution Kernel Filtering on Plaque Imaging with Multislice CT Using an Ex-Vivo Model of Coronary Angiography.” RADIOLOGIA MEDICA, vol. 110, no. 3, 2005, pp. 234–40.
APA
Cademartiri, F., Runza, G., Mollet, N. R., Luccichenti, G., Belgrano, M., Somers, P., … Krestin, G. (2005). Influence of increasing convolution kernel filtering on plaque imaging with multislice CT using an ex-vivo model of coronary angiography. RADIOLOGIA MEDICA, 110(3), 234–240.
Chicago author-date
Cademartiri, Filippo, Giuseppe Runza, Nico R Mollet, G Luccichenti, M Belgrano, Pamela Somers, Michiel Knaapen, et al. 2005. “Influence of Increasing Convolution Kernel Filtering on Plaque Imaging with Multislice CT Using an Ex-Vivo Model of Coronary Angiography.” RADIOLOGIA MEDICA 110 (3): 234–40.
Chicago author-date (all authors)
Cademartiri, Filippo, Giuseppe Runza, Nico R Mollet, G Luccichenti, M Belgrano, Pamela Somers, Michiel Knaapen, Stefan Verheye, Nico Bruining, Ronald Hamers, M Midiri, Pim J de Feyter, and GP Krestin. 2005. “Influence of Increasing Convolution Kernel Filtering on Plaque Imaging with Multislice CT Using an Ex-Vivo Model of Coronary Angiography.” RADIOLOGIA MEDICA 110 (3): 234–240.
Vancouver
1.
Cademartiri F, Runza G, Mollet NR, Luccichenti G, Belgrano M, Somers P, et al. Influence of increasing convolution kernel filtering on plaque imaging with multislice CT using an ex-vivo model of coronary angiography. RADIOLOGIA MEDICA. 2005;110(3):234–40.
IEEE
[1]
F. Cademartiri et al., “Influence of increasing convolution kernel filtering on plaque imaging with multislice CT using an ex-vivo model of coronary angiography,” RADIOLOGIA MEDICA, vol. 110, no. 3, pp. 234–240, 2005.
@article{836560,
  abstract     = {PURPOSE: To assess the variability in attenuation of coronary plaques with multislice CT-angiography (MSCT-CA) in an ex-vivo model with varying convolution kernels. MATERIALS AND METHODS: MSCT-CA (Sensation 16, Siemens) was performed in three ex-vivo left coronary arteries after instillation of contrast material solution (Iomeprol 400 mgI/ml, dilution: 1/80). The specimens were placed in oil to simulate epicardial fat. Scan parameters: slices 16/0.75 mm, rotation time 375 ms, feed/rotation 3.0 mm, mAs 500, slice thickness 1 mm, and FOV 50 mm. Datasets were reconstructed using 4 different kernels (B30f-smooth, B36f-medium smooth, B46f-medium, and B60f-sharp). Each scan was scored for the presence of plaques. Once a plaque was detected, the operator performed attenuation measurements (HU) in coronary lumen, oil, calcified and soft plaque tissue using the same settings in all datasets. The results were compared with T-test and correlated with Pearson's test. RESULTS: Overall, 464 measurements were performed. Significant differences (p<0.05) were found for the mean attenuation of lumen (B30f/B36f, B30f/B60f, B36f/B46f, B36f/B60f, and B46f/B60f), oil (B30f/B36f, B30f/B46f, B30f/B60f, B36f/B46f, and B46f/B60f), calcium (all kernels), and plaque (B30f/B36f, B30f/B46f, B30f/B60f, and B46f/B60f) using 4 different kernels. The attenuation values (mean+/-SD) within the lumen (246+/-6, 215+/-13, 248+/-5, and 270+/-7), oil (-123+/-3, -127+/-1, -121+/-6, and -127+/-4), calcified plaque tissue (703+/-334, 739+/-364, 817+/-381, and 1181+/-503), and soft plaque tissue (134+/-56, 111+/-49, 120+/-56, and 102+/-41) showed high correlation (p<0.001) when attenuation of all structures were compared in different kernels. CONCLUSIONS: Use of sharper convolution kernels significantly increases the attenuation of the calcium within coronary plaques and reduces the attenuation of soft plaque tissue.},
  author       = {Cademartiri, Filippo and Runza, Giuseppe and Mollet, Nico R and Luccichenti, G and Belgrano, M and Somers, Pamela and Knaapen, Michiel and Verheye, Stefan and Bruining, Nico and Hamers, Ronald and Midiri, M and de Feyter, Pim J and Krestin, GP},
  issn         = {0033-8362},
  journal      = {RADIOLOGIA MEDICA},
  keywords     = {convolution kernels,SPIRAL COMPUTED-TOMOGRAPHY,coronary plaque,coronary angiography,multislice computed tomography,MORPHOLOGY,RESTENOSIS,MECHANISMS,ANGIOPLASTY,PATHOGENESIS,ACCURACY,ARTERY DISEASE,ATHEROSCLEROTIC PLAQUE,INTRAVASCULAR ULTRASOUND},
  language     = {eng},
  number       = {3},
  pages        = {234--240},
  title        = {Influence of increasing convolution kernel filtering on plaque imaging with multislice CT using an ex-vivo model of coronary angiography},
  volume       = {110},
  year         = {2005},
}

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