VALUE ADDED RISK ASSESSMENT USING CORONARY ARTERY CALCIFICATION FROM NONCONTRAST CHEST CT IMAGES

CHEST Journal ◽  
2018 ◽  
Vol 154 (4) ◽  
pp. 83A
Author(s):  
PANKIL DESAI ◽  
WEICHUN WU ◽  
LLOYD XIAO ◽  
GREGORY PEARSON ◽  
SUZANNE ROSE ◽  
...  
2017 ◽  
Author(s):  
Yiting Xie ◽  
Shuang Liu ◽  
Albert Miller ◽  
Jeffrey A. Miller ◽  
Steven Markowitz ◽  
...  

2014 ◽  
Author(s):  
Yiting Xie ◽  
Matthew D. Cham ◽  
Claudia Henschke ◽  
David Yankelevitz ◽  
Anthony P. Reeves

2000 ◽  
Vol 41 (2) ◽  
pp. 116-121 ◽  
Author(s):  
L.-M. Zheng ◽  
S. Sone ◽  
Y. Itani ◽  
Q. Wang ◽  
K. Hanamura ◽  
...  

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.


Diagnostics ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 178
Author(s):  
Tzyy-Ling Chuang ◽  
Yuh-Feng Wang ◽  
Malcolm Koo ◽  
Mei-Hua Chuang

The trabecular bone score (TBS) was found to be significantly associated with moderate coronary artery calcification (CAC). The aim of this study was to further explore the association between TBS-adjusted Fracture Risk Assessment Tool (FRAX) and CAC score in women. The electronic medical record database of a regional teaching hospital in southern Taiwan yielded women who received both coronary computed tomography and bone mineral density (BMD) measurement during their general health examination. Health history, anthropomorphic measurements, laboratory results, BMD, and T-scores were obtained. TBS values were calculated from database spine dual-energy X-ray absorptiometry files. Linear regression analyses tested the association between CAC score and 10-year probability of major osteoporotic fracture (MOF) and hip fracture (HF) determined by TBS-adjusted FRAX. Of the 116 women (mean age 55.8 years) studied, 24.1% had osteoporosis. Simple linear regression showed a significant association of CAC score with an increase in MOF and HF risk as measured by TBS-adjusted FRAX. In multiple linear regression adjusted for potential confounders, CAC score remained significantly associated with TBS-adjusted FRAX for right MOF (p = 0.002), left MOF (p = 0 006), right HF (p = 0.005), and left HF (p = 0.015). In conclusion, clinicians should be vigilant to the potential increased risk of coronary events among women with increased TBS-adjusted FRAX for MOF and HF.


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