Volumetric Quantification of Coronary Artery Calcifications Using Dual-Slice Spiral CT Scanner: Improved Reproducibility of Measurements with 180° Linear Interpolation Algorithm

2001 ◽  
Vol 25 (2) ◽  
pp. 278-286 ◽  
Author(s):  
Salah D. Qanadli ◽  
Benoit Mesurolle ◽  
Philippe Aegerter ◽  
Thierry Joseph ◽  
Vincent L. Oliva ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Spiral Ct ◽  
Linear Interpolation ◽  
Interpolation Algorithm ◽  
Ct Scanner ◽  
Volumetric Quantification

Prevalence of motion artifact simulating aortic dissection on spiral CT using a 180 ° linear interpolation algorithm for reconstruction of the images

1997 ◽  
Vol 7 (3) ◽  
pp. 320-322 ◽  
Author(s):  
P. Loubeyre ◽  
F. Grozel ◽  
Y. Carrillon ◽  
C. Gaillard ◽  
F. Guyard ◽  
...  
Keyword(s):  
Aortic Dissection ◽  
Spiral Ct ◽  
Motion Artifact ◽  
Linear Interpolation ◽  
Interpolation Algorithm

Effect of CT digital image compression on detection of coronary artery calcification

2000 ◽  
Vol 41 (2) ◽  
pp. 116-121 ◽  
Author(s):  
L.-M. Zheng ◽  
S. Sone ◽  
Y. Itani ◽  
Q. Wang ◽  
K. Hanamura ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Calcification ◽  
Image Data ◽  
Spiral Ct ◽  
Diagnostic Value ◽  
Ct Images ◽  
Detection Accuracy ◽  
Characteristic Analysis ◽  
High Attenuation ◽  
Significant Difference

Purpose: To test the effect of digital compression of CT images on the detection of small linear or spotted high attenuation lesions such as coronary artery calcification (CAC). Material and Methods: Fifty cases with and 50 without CAC were randomly selected from a population that had undergone spiral CT of the thorax for screening lung cancer. CT image data were compressed using JPEG (Joint Photographic Experts Group) or wavelet algorithms at ratios of 10:1, 20:1 or 40:1. Five radiologists reviewed the uncompressed and compressed images on a cathode-ray-tube. Observer performance was evaluated with receiver operating characteristic analysis. Results: CT images compressed at a ratio as high as 20:1 were acceptable for primary diagnosis of CAC. There was no significant difference in the detection accuracy for CAC between JPEG and wavelet algorithms at the compression ratios up to 20:1. CT images were more vulnerable to image blurring on the wavelet compression at relatively lower ratios, and "blocking" artifacts occurred on the JPEG compression at relatively higher ratios. Conclusion: JPEG and wavelet algorithms allow compression of CT images without compromising their diagnostic value at ratios up to 20:1 in detecting small linear or spotted high attenuation lesions such as CAC, and there was no difference between the two algorithms in diagnostic accuracy.

scholarly journals The Utility of Multi-detector Row Spiral CT for Detection of Coronary Artery Stenoses

2005 ◽  
Vol 46 (1) ◽  
pp. 86 ◽  
Author(s):  
Jae-Youn Moon ◽  
Namsik Chung ◽  
Byoung Wook Choi ◽  
Kyu Ok Choe ◽  
Hye Sun Seo ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Spiral Ct ◽  
Coronary Artery Stenoses

Spiral interpolation algorithm for multislice spiral CT. I. Theory

2000 ◽  
Vol 19 (9) ◽  
pp. 822-834 ◽  
Author(s):  
W.A. Kalender ◽  
T. Fuchs ◽  
J. Krause ◽  
K. Klingenbeck ◽  
T. Flohr ◽  
...  
Keyword(s):  
Spiral Ct ◽  
Interpolation Algorithm ◽  
Multislice Spiral Ct

scholarly journals Serum S100A12 and Progression of Coronary Artery Calcification Over 4 Years in Hemodialysis Patients

2015 ◽  
Vol 42 (1) ◽  
pp. 4-13 ◽  
Author(s):  
Yin-na Wang ◽  
Yi Sun ◽  
Ying Wang ◽  
Yan-li Jia
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Calcification ◽  
Spiral Ct ◽  
Hemodialysis Patients ◽  
Rapid Progression ◽  
Multislice Spiral Ct ◽  
Rapid Progressors ◽  
Slow Progressors ◽  
Severe Coronary Artery ◽  
Independent Determinant

Background/Aim: Vascular calcification is common and contributes to increased cardiovascular mortality in hemodialysis (HD) patients. In this prospective study, we aimed to investigate the associations of serum S100A12 in the presence of severe coronary artery calcification (CAC) and the progression of CAC in HD patients. Methods: Sixty maintenance HD patients and 30 controls were enrolled. Serum S100A12 levels were measured using ELISA. CAC scores (CACs) were measured twice at a 4-year interval using multislice spiral CT. The HD patients were classified as rapid progressors or slow progressors according to the change in the CACs across these 2 measurements (ΔCACs). Results: The incidences of rapid progression of CAC in patients with baseline CACs ≤10, CACs >10 and CACs >400 were 12.5, 40.0 and 64.3%, respectively. Both baseline and 4-year serum S100A12 levels were significantly higher in the rapid progressors than in the slow progressors (medians of 45.6 vs. 30.2 ng/ml, p < 0.001 and 62.3 vs. 39.4 ng/ml, p = 0.002, respectively). The serum S100A12 levels were significantly correlated with baseline CACs (r = 0.466, p < 0.001), 4-year CACs (r = 0.440, p < 0.001) and ΔCACs (r = 0.392, p < 0.001). Importantly, the ΔCACs were significantly correlated with ΔS100A12 levels (r = 0.396, p < 0.001). Logistic regression analysis revealed that the serum S100A12 level was as an independent determinant of the presence of severe CAC and that the increment in the serum S100A12 level was a factor that was significantly independently associated with the progression of CAC. Conclusions: Serum S100A12 levels were significantly associated with the presence of severe CAC, and the increment in serum S100A12 levels was an independent determinant of the progression of CAC.

Spiral CT Evaluation of Coronary Artery Bypass Graft Patency

1993 ◽  
Vol 17 (2) ◽  
pp. 253-259 ◽  
Author(s):  
Richard Tello ◽  
Philip Costello ◽  
Christian Ecker ◽  
George Hartnell
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass Graft ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Spiral Ct ◽  
Graft Patency ◽  
Artery Bypass Graft ◽  
Ct Evaluation

Detection of coronary artery calcifications predicting coronary heart disease: comparison of fluoroscopy and spiral CT

1998 ◽  
Vol 8 (6) ◽  
pp. 1016-1024 ◽  
Author(s):  
C. P. Heussel ◽  
T. Voigtlaender ◽  
H.-U. Kauczor ◽  
M. Braun ◽  
J. Meyer ◽  
...  
Keyword(s):  
Coronary Heart Disease ◽  
Heart Disease ◽  
Coronary Artery ◽  
Spiral Ct
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