Evaluation of 1D, 2D and 3D nodule size estimation by radiologists for spherical and non-spherical nodules through CT thoracic phantom imaging

Author(s):  
Nicholas Petrick ◽  
Hyun J. Grace Kim ◽  
David Clunie ◽  
Kristin Borradaile ◽  
Robert Ford ◽  
...  
2011 ◽  
Vol 56 (19) ◽  
pp. 6223-6242 ◽  
Author(s):  
Rongping Zeng ◽  
Nicholas Petrick ◽  
Marios A Gavrielides ◽  
Kyle J Myers

2010 ◽  
Vol 18 (14) ◽  
pp. 15244 ◽  
Author(s):  
Marios A. Gavrielides ◽  
Lisa M. Kinnard ◽  
Kyle J. Myers ◽  
Jennifer Peregoy ◽  
William F. Pritchard ◽  
...  

Thorax ◽  
2017 ◽  
Vol 73 (8) ◽  
pp. 779-781 ◽  
Author(s):  
Marjolein A Heuvelmans ◽  
Joan E Walter ◽  
Rozemarijn Vliegenthart ◽  
Peter M A van Ooijen ◽  
Geertruida H De Bock ◽  
...  

We studied 2240 indeterminate solid nodules (volume 50–500mm3) to determine the correlation of diameter and semi-automated volume measurements for pulmonary nodule size estimation. Intra-nodular diameter variation, defined as maximum minus minimum diameter through the nodule’s center, varied by 2.8 mm (median, IQR:2.2–3.7 mm), so above the 1.5 mm cutoff for nodule growth used in Lung CT Screening Reporting and Data System (Lung-RADS). Using mean or maximum axial diameter to assess nodule volume led to a substantial mean overestimation of nodule volume of 47.2% and 85.1%, respectively, compared to semi-automated volume. Thus, size of indeterminate nodules is poorly represented by diameter.Trial registration numberPre-results, ISRCTN63545820.


2010 ◽  
Vol 29 (10) ◽  
pp. 1795-1807 ◽  
Author(s):  
Marios A. Gavrielides ◽  
Rongping Zeng ◽  
Lisa M. Kinnard ◽  
Kyle J. Myers ◽  
Nicholas Petrick

2010 ◽  
Author(s):  
Marios A. Gavrielides ◽  
Lisa M. Kinnard ◽  
Kyle J. Myers ◽  
Rongping Zeng ◽  
Nicholas Petrick

Author(s):  
P.M. Rice ◽  
MJ. Kim ◽  
R.W. Carpenter

Extrinsic gettering of Cu on near-surface dislocations in Si has been the topic of recent investigation. It was shown that the Cu precipitated hetergeneously on dislocations as Cu silicide along with voids, and also with a secondary planar precipitate of unknown composition. Here we report the results of investigations of the sense of the strain fields about the large (~100 nm) silicide precipitates, and further analysis of the small (~10-20 nm) planar precipitates.Numerous dark field images were analyzed in accordance with Ashby and Brown's criteria for determining the sense of the strain fields about precipitates. While the situation is complicated by the presence of dislocations and secondary precipitates, micrographs like those shown in Fig. 1(a) and 1(b) tend to show anomalously wide strain fields with the dark side on the side of negative g, indicating the strain fields about the silicide precipitates are vacancy in nature. This is in conflict with information reported on the η'' phase (the Cu silicide phase presumed to precipitate within the bulk) whose interstitial strain field is considered responsible for the interstitial Si atoms which cause the bounding dislocation to expand during star colony growth.


2021 ◽  
Author(s):  
Ruoyang Liu ◽  
Ke Tian Tan ◽  
Yifan Gong ◽  
Yongzhi Chen ◽  
Zhuoer Li ◽  
...  

Covalent organic frameworks offer a molecular platform for integrating organic units into periodically ordered yet extended 2D and 3D polymers to create topologically well-defined polygonal lattices and built-in discrete micropores and/or mesopores.


2012 ◽  
Author(s):  
Michael Sackllah ◽  
Denny Yu ◽  
Charles Woolley ◽  
Steven Kasten ◽  
Thomas J. Armstrong

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