INFLUENCE OF CONVOLUTION FILTERING ON CORONARY PLAQUE ATTENUATION VALUES: OBSERVATIONS IN AN EX VIVO MODEL OF MULTISLICE COMPUTED TOMOGRAPHY CORONARY ANGIOGRAPHY.

Cademartiri, F.; Palumbo, A.; Maffei, E.; Mollet, N.; Somers, P.; Knaapen, M.; Verheye, S.; Hamers, R.; Bruining, N.

Risultato della ricerca: Article

52 Citazioni (Scopus)

Abstract

Attenuation variability ( measured in Hounsfield Units, HU) of human coronary plaques using multislice computed tomography (MSCT) was evaluated in an ex vivo model with increasing convolution kernels. MSCT was performed in seven ex vivo left coronary arteries sunk into oil followingthe instillation of saline (1/infinity) and a 1/50 solution of contrast material ( 400 mgI/ml iomeprol). Scan parameters were: slices/ collimation, 16/0.75 mm; rotation time, 375 ms. Four convolution kernels were used: b30f-smooth, b36f-medium smooth, b46f-medium and b60f-sharp. An experienced radiologist scored for the presence of plaques and measured the attenuation in lumen, calcified and noncalcified plaques and the surrounding oil. The results were compared by the ANOVA test and correlated with Pearson's test. The signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated. The mean attenuation values were significantly different between the four filters ( p < 0.0001) in each structure with both solutions. After clustering for the filter, all of the noncalcified plaque values (20.8 +/- 39.1, 14.2 +/- 35.8, 14.0 +/- 32.0, 3.2 +/- 32.4 HU with saline; 74.7 +/- 66.6, 68.2 +/- 63.3, 66.3 +/- 66.5, 48.5 +/- 60.0 HU in contrast solution) were significantly different, with the exception of the pair b36f - b46f, for which a moderate-high correlation was generally found. Improved SNRs and CNRs were achieved by b30f and b46f. The use of different convolution filters significantly modifief the attenuation values, while sharper filtering increased the calcified plaque attenuation and reduced the noncalcified plaque attenuation
Lingua originaleEnglish
pagine (da-a)1842-1849
Numero di pagine8
RivistaEuropean Radiology
Volume17
Stato di pubblicazionePublished - 2007

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cita questo

Cademartiri, F.; Palumbo, A.; Maffei, E.; Mollet, N.; Somers, P.; Knaapen, M.; Verheye, S.; Hamers, R.; Bruining, N. (2007). INFLUENCE OF CONVOLUTION FILTERING ON CORONARY PLAQUE ATTENUATION VALUES: OBSERVATIONS IN AN EX VIVO MODEL OF MULTISLICE COMPUTED TOMOGRAPHY CORONARY ANGIOGRAPHY. European Radiology, 17, 1842-1849.

INFLUENCE OF CONVOLUTION FILTERING ON CORONARY PLAQUE ATTENUATION VALUES: OBSERVATIONS IN AN EX VIVO MODEL OF MULTISLICE COMPUTED TOMOGRAPHY CORONARY ANGIOGRAPHY. / Cademartiri, F.; Palumbo, A.; Maffei, E.; Mollet, N.; Somers, P.; Knaapen, M.; Verheye, S.; Hamers, R.; Bruining, N.

In: European Radiology, Vol. 17, 2007, pag. 1842-1849.

Risultato della ricerca: Article

Cademartiri, F.; Palumbo, A.; Maffei, E.; Mollet, N.; Somers, P.; Knaapen, M.; Verheye, S.; Hamers, R.; Bruining, N. 2007, 'INFLUENCE OF CONVOLUTION FILTERING ON CORONARY PLAQUE ATTENUATION VALUES: OBSERVATIONS IN AN EX VIVO MODEL OF MULTISLICE COMPUTED TOMOGRAPHY CORONARY ANGIOGRAPHY.', European Radiology, vol. 17, pagg. 1842-1849.
Cademartiri, F.; Palumbo, A.; Maffei, E.; Mollet, N.; Somers, P.; Knaapen, M.; Verheye, S.; Hamers, R.; Bruining, N. INFLUENCE OF CONVOLUTION FILTERING ON CORONARY PLAQUE ATTENUATION VALUES: OBSERVATIONS IN AN EX VIVO MODEL OF MULTISLICE COMPUTED TOMOGRAPHY CORONARY ANGIOGRAPHY. European Radiology. 2007;17:1842-1849.
Cademartiri, F.; Palumbo, A.; Maffei, E.; Mollet, N.; Somers, P.; Knaapen, M.; Verheye, S.; Hamers, R.; Bruining, N. / INFLUENCE OF CONVOLUTION FILTERING ON CORONARY PLAQUE ATTENUATION VALUES: OBSERVATIONS IN AN EX VIVO MODEL OF MULTISLICE COMPUTED TOMOGRAPHY CORONARY ANGIOGRAPHY. In: European Radiology. 2007 ; Vol. 17. pagg. 1842-1849.
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title = "INFLUENCE OF CONVOLUTION FILTERING ON CORONARY PLAQUE ATTENUATION VALUES: OBSERVATIONS IN AN EX VIVO MODEL OF MULTISLICE COMPUTED TOMOGRAPHY CORONARY ANGIOGRAPHY.",
abstract = "Attenuation variability ( measured in Hounsfield Units, HU) of human coronary plaques using multislice computed tomography (MSCT) was evaluated in an ex vivo model with increasing convolution kernels. MSCT was performed in seven ex vivo left coronary arteries sunk into oil followingthe instillation of saline (1/infinity) and a 1/50 solution of contrast material ( 400 mgI/ml iomeprol). Scan parameters were: slices/ collimation, 16/0.75 mm; rotation time, 375 ms. Four convolution kernels were used: b30f-smooth, b36f-medium smooth, b46f-medium and b60f-sharp. An experienced radiologist scored for the presence of plaques and measured the attenuation in lumen, calcified and noncalcified plaques and the surrounding oil. The results were compared by the ANOVA test and correlated with Pearson's test. The signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated. The mean attenuation values were significantly different between the four filters ( p < 0.0001) in each structure with both solutions. After clustering for the filter, all of the noncalcified plaque values (20.8 +/- 39.1, 14.2 +/- 35.8, 14.0 +/- 32.0, 3.2 +/- 32.4 HU with saline; 74.7 +/- 66.6, 68.2 +/- 63.3, 66.3 +/- 66.5, 48.5 +/- 60.0 HU in contrast solution) were significantly different, with the exception of the pair b36f - b46f, for which a moderate-high correlation was generally found. Improved SNRs and CNRs were achieved by b30f and b46f. The use of different convolution filters significantly modifief the attenuation values, while sharper filtering increased the calcified plaque attenuation and reduced the noncalcified plaque attenuation",
keywords = "Multislice computed tomography, Coronary angiography, Coronary plaque, Convolutions kernels",
author = "{Cademartiri, F.; Palumbo, A.; Maffei, E.; Mollet, N.; Somers, P.; Knaapen, M.; Verheye, S.; Hamers, R.; Bruining, N.} and Massimo Midiri and Bartolotta, {Tommaso Vincenzo} and Giuseppe Runza and {La Grutta}, Ludovico",
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T1 - INFLUENCE OF CONVOLUTION FILTERING ON CORONARY PLAQUE ATTENUATION VALUES: OBSERVATIONS IN AN EX VIVO MODEL OF MULTISLICE COMPUTED TOMOGRAPHY CORONARY ANGIOGRAPHY.

AU - Cademartiri, F.; Palumbo, A.; Maffei, E.; Mollet, N.; Somers, P.; Knaapen, M.; Verheye, S.; Hamers, R.; Bruining, N.

AU - Midiri, Massimo

AU - Bartolotta, Tommaso Vincenzo

AU - Runza, Giuseppe

AU - La Grutta, Ludovico

PY - 2007

Y1 - 2007

N2 - Attenuation variability ( measured in Hounsfield Units, HU) of human coronary plaques using multislice computed tomography (MSCT) was evaluated in an ex vivo model with increasing convolution kernels. MSCT was performed in seven ex vivo left coronary arteries sunk into oil followingthe instillation of saline (1/infinity) and a 1/50 solution of contrast material ( 400 mgI/ml iomeprol). Scan parameters were: slices/ collimation, 16/0.75 mm; rotation time, 375 ms. Four convolution kernels were used: b30f-smooth, b36f-medium smooth, b46f-medium and b60f-sharp. An experienced radiologist scored for the presence of plaques and measured the attenuation in lumen, calcified and noncalcified plaques and the surrounding oil. The results were compared by the ANOVA test and correlated with Pearson's test. The signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated. The mean attenuation values were significantly different between the four filters ( p < 0.0001) in each structure with both solutions. After clustering for the filter, all of the noncalcified plaque values (20.8 +/- 39.1, 14.2 +/- 35.8, 14.0 +/- 32.0, 3.2 +/- 32.4 HU with saline; 74.7 +/- 66.6, 68.2 +/- 63.3, 66.3 +/- 66.5, 48.5 +/- 60.0 HU in contrast solution) were significantly different, with the exception of the pair b36f - b46f, for which a moderate-high correlation was generally found. Improved SNRs and CNRs were achieved by b30f and b46f. The use of different convolution filters significantly modifief the attenuation values, while sharper filtering increased the calcified plaque attenuation and reduced the noncalcified plaque attenuation

AB - Attenuation variability ( measured in Hounsfield Units, HU) of human coronary plaques using multislice computed tomography (MSCT) was evaluated in an ex vivo model with increasing convolution kernels. MSCT was performed in seven ex vivo left coronary arteries sunk into oil followingthe instillation of saline (1/infinity) and a 1/50 solution of contrast material ( 400 mgI/ml iomeprol). Scan parameters were: slices/ collimation, 16/0.75 mm; rotation time, 375 ms. Four convolution kernels were used: b30f-smooth, b36f-medium smooth, b46f-medium and b60f-sharp. An experienced radiologist scored for the presence of plaques and measured the attenuation in lumen, calcified and noncalcified plaques and the surrounding oil. The results were compared by the ANOVA test and correlated with Pearson's test. The signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated. The mean attenuation values were significantly different between the four filters ( p < 0.0001) in each structure with both solutions. After clustering for the filter, all of the noncalcified plaque values (20.8 +/- 39.1, 14.2 +/- 35.8, 14.0 +/- 32.0, 3.2 +/- 32.4 HU with saline; 74.7 +/- 66.6, 68.2 +/- 63.3, 66.3 +/- 66.5, 48.5 +/- 60.0 HU in contrast solution) were significantly different, with the exception of the pair b36f - b46f, for which a moderate-high correlation was generally found. Improved SNRs and CNRs were achieved by b30f and b46f. The use of different convolution filters significantly modifief the attenuation values, while sharper filtering increased the calcified plaque attenuation and reduced the noncalcified plaque attenuation

KW - Multislice computed tomography, Coronary angiography, Coronary plaque, Convolutions kernels

UR - http://hdl.handle.net/10447/30357

M3 - Article

VL - 17

SP - 1842

EP - 1849

JO - European Radiology

JF - European Radiology

SN - 0938-7994

ER -