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Quantification of lumen stenoses with known dimensions by conventional angiography and computed tomography: implications of using conventional angiography as gold standard

A. Arbab-Zadeh, J. Texter, K. M. Ostbye, K. Kitagawa, J. Brinker, R. T. George, J. M. Miller, J. C. Trost, R. A. Lange, J. A. C. Lima, A. C. Lardo
2010 Heart  
Methods Nineteen acrylic coronary vessel phantoms with precisely drilled stenoses of mild (25%), moderate (50%) and severe (75%) grade were studied with 64slice MDCT and digital flat panel angiography.  ...  Quantitative coronary angiography (QCA) has inherent limitations for displaying complex vascular anatomy, yet it remains the gold standard for stenosis quantification.  ...  The precise dimensions and stenoses for each vessel phantom were verified by the manufacturer using precision instruments with an error of 0.01 mm or smaller for diameter measurements.  ... 
doi:10.1136/hrt.2009.186783 pmid:20801854 fatcat:3muk2ixew5ffncpcu6y4q4jbcu

Edge detection versus densitometry in the quantitative assessment of stenosis phantoms: An in vivo comparison in porcine coronary arteries

Carlo Di Mario, Jürgen Haase, Ad den Boer, Johan H.C. Reiber, Patrick W. Serruys
1992 American Heart Journal  
With the technical assistance of Ron van Bremen, Ronald van den Perk, MSc, and Eline J.  ...  Montauban van Swijndregt, MSc Computer-based automatic edge detection angiographic analysis systems have reduced the variability  ...  In an in vivo experimental setting mimicking diagnostic coronary angiography, single-plane quantitative angiography showed a high accuracy and precision in the measurement of stenosis hole phantoms with  ... 
doi:10.1016/0002-8703(92)90398-f pmid:1442484 fatcat:qrwwn3ct2jg3dkxmo5fkeel2jq

Quantification of absolute luminal diameter by computer-analyzed digital subtraction angiography: an assessment in human coronary arteries

M C Rosenberg, L W Klein, J B Agarwal, G Stets, G A Hermann, R H Helfant
1988 Circulation  
Thus quantitative coronary angiography by digital subtraction angiography is sufficiently accurate to be of use in the measurement of the severity of a coronary stenosis.  ...  Determination of absolute lumen diameters has been shown to be useful in predicting the functional importance of a coronary stenosis.  ...  Since phantoms fail to simulate the complex geometry of human coronary stenoses, we used a previously validated method to test computer derived values in human coronary arteries.  ... 
doi:10.1161/01.cir.77.2.484 pmid:3276411 fatcat:jsvybxdvi5gupgcmzxzsupu5nm

Influence of the Accuracy of Angiography-Based Reconstructions on Velocity and Wall Shear Stress Computations in Coronary Bifurcations: A Phantom Study

Jelle T. C. Schrauwen, Antonios Karanasos, Nienke S. van Ditzhuijzen, Jean-Paul Aben, Antonius F. W. van der Steen, Jolanda J. Wentzel, Frank J. H. Gijsen, Alberto Aliseda
2015 PLoS ONE  
A similarity index and a noninferiority test were used to compare the WSS in the phantoms and their reconstructions. The margin for this test was based on the resolution constraints of angiography.  ...  actual WSS and the WSS computed using the reconstruction therefore becomes:ε ¼ 1 À t 0 t à 100% In a coronary artery with a radius of for example 1.25 mm and an angiography system with a resolution of  ... 
doi:10.1371/journal.pone.0145114 pmid:26690897 pmcid:PMC4686962 fatcat:7hux2sinzzczjcpmlewjowrz5q

In vivo validation of an experimental adaptive quantitative coronary angiography algorithm to circumvent overestimation of small luminal diameters

David Keane, Ed Gronenschild, Cornelis Slager, Yukio Ozaki, Jürgen Haase, Patrick W. Serruys
1995 Catheterization and Cardiovascular Diagnosis  
The reliability of quantitative coronary angiography (QCA) measurements is of fundamental importance for the study and practice of lnterventional cardiology.  ...  Such a systematic error may result In the underestimation of luminal gain during intracoronary procedures and in the underestlmation of progression of coronary artery disease during longltudlnal studies  ...  The reliability of quantitative coronary angiography (QCA) measurements is of fundamental importance for the study and practice of lnterventional cardiology.  ... 
doi:10.1002/ccd.1810360106 pmid:7489588 fatcat:wmwsbm7mnnhtpfhshpddbj3uue

Front Matter: Volume 10132

2017 Medical Imaging 2017: Physics of Medical Imaging  
uncertainty in coronary CTA plaque measurements using dynamic cardiac phantom and 3D-printed plaque models 10132 5F Accuracy and variability of texture-based radiomics features of lung lesions across  ...  and retromammary tissue for use in virtual clinical trials 10132 5D Improved virtual cardiac phantom with variable diastolic filling rates and coronary artery velocities 10132 5E Quantification of the  ...  (Japan) Honorable Mention: Paper 10132-191, "Validation study of the thorax phantom Lungman for optimization purposes," Sunay Rodríguez Pérez, SCK CEN (Belgium) and KU Luven (Belgium) xxviii Proc. of SPIE  ... 
doi:10.1117/12.2276763 fatcat:5vgmgqm4izfdrl6p4itkq6fsjm

Quantitative coronary angiography with deformable spline models

A.K. Klein, F. Lee, A.A. Amini
1997 IEEE Transactions on Medical Imaging  
The system has been statistically validated using fixed stenosis and flexible-tube phantoms.  ...  The points of minimal constriction and the percent-diameter stenosis are determined from a computed vessel centerline.  ...  Purushothoman, Ph.D. for his aid in construction of the phantoms, and G. Heyrich, M.D. for help in selecting and transferring images from the YNHH catheterization lab.  ... 
doi:10.1109/42.640737 pmid:9368103 fatcat:q4nk3xw6lbgzth3rk65w6rjeiu

On-line coronary lesion quantitation: Integrated quantitative coronary ultrasonic — Angiographic approach

Eugene V. Pomerantsev, Simon H. Stertzer, Jonas Metz, William J. Sanders, Edwin L. Alderman, Peter J. Fitzgerald
1996 Journal of the American College of Cardiology  
Concfusions: Neural netwod~ might be a useful support for the early diagnnsts/exdusion of AMI and prediction of infarct size.  ...  The infarct siZe was classified as "major" or "minor according to peak CK-MB level. 50 patients were used to train the NN and 38 patients (test set) wore used for the evaluation.  ...  Stanford Univers~ Hoop/tat, ~'~arrford, CA To assess the accuracy of quastitation of coronary arterial dimensions and to validate the combined use of on-line QCA, and quantitative coronary Conclusions:  ... 
doi:10.1016/s0735-1097(96)81870-5 fatcat:rwyy4dze4raf7j4r3pogqamyce

Coronary Angiography (IJECCE) [chapter]

Chiu-Lung Wu, Chi-Wen Ju
2013 What Should We Know About Prevented, Diagnostic, and Interventional Therapy in Coronary Artery Disease  
Validation studies that use known phantoms show a high correlation between actual size and that measured by quantitative coronary angiography QC" r = . [ -].  ...  The resolution of these phantom studies in-dicates the precision of coronary angiography to be . to . mm.  ...  Link between the angiographic substudy and mortality outcomes in a large randomized trial of myocardial reperfusion importance of early and complete infarct artery reperfusion. GUSTO-I Investigators.  ... 
doi:10.5772/54080 fatcat:fxwr2ty6zfennk45touem4x5f4

Front Matter: Volume 10573

Guang-Hong Chen, Joseph Y. Lo, Taly Gilat Schmidt
2018 Medical Imaging 2018: Physics of Medical Imaging  
using a Base 36 numbering system employing both numerals and letters.  ...  SPIE uses a seven-digit CID article numbering system structured as follows:  The first five digits correspond to the SPIE volume number.  The last two digits indicate publication order within the volume  ...  of exposure parameters and phantom 10573 61 Precision analysis of the noise power spectrum estimate in radiography imaging 10573 62 Oversampling digital radiography imaging based on the 2x2 moving average  ... 
doi:10.1117/12.2323748 fatcat:mn5csad2mjezljnvzxem3rhk5i

Comparison of simultaneously performed digital and film-based angiography in assessment of coronary artery disease

J C Gurley, S E Nissen, D C Booth, M Harrison, P Grayburn, J L Elion, A N DeMaria
1988 Circulation  
This study compared digital angiography (Digital) to conventional cineangiography (Cine) for the diagnosis and quantification of coronary artery disease.  ...  Digital was highly sensitive for identification of clinically relevant stenoses, but less specific and less predictive than a second observation of Cine.  ...  Acknowledgment We gratefully acknowledge Betty Parks for the preparation of this manuscript.  ... 
doi:10.1161/01.cir.78.6.1411 pmid:3191595 fatcat:sasvvddswnbytj27ne2j6c4mbu

Mathematical Models for Blood Flow Quantification in Dialysis Access Using Angiography: A Comparative Study

Nischal Koirala, Gordon McLennan
2021 Diagnostics  
Digital subtraction angiography (DSA) and fluoroscopy were used to acquire images at various sampling rates (DSA—3 and 6 frames/s, fluoroscopy—4 and 10 pulses/s).  ...  While angiography is extensively used for dialysis access–salvage procedures, to date, there is no image-based blood flow measurement application commercially available in the angiography suite.  ...  Acknowledgments: The authors would like to thank Ken Kula, Medical Illustrator, Cleveland Clinic Center for Medical Arts and Photography for help with the illustration.  ... 
doi:10.3390/diagnostics11101771 pmid:34679469 fatcat:xvdjpmhaanddvdlawtzddh4p7q

A QUANTIFICATION METHODS IN MYOCARDIAL BLOOD FLOW ESTIMABILITY FOR MYOCARDIAL PERFUSION IMAGING CT

Amina Rasheed, Imran Shahid, Hira Mubeen
2021 Zenodo  
Using numerical simulations and model-to-models tests, we found that reduced, 3-parameter models provide more precise and accurateMBF estimates than model-independent methods or models with more than three  ...  This work provides a foundation for the development and application of analysis methods, as well as optimization of acquisition protocols, for precise and accurate MBF estimation in MPI-CT.  ...  LV myocardium was manually segmentedoncein the digital phantom and the same mask was used throughout the analysis.  ... 
doi:10.5281/zenodo.4430636 fatcat:44s6eokbsncnhevaig3kxxmqrq

Dual-energy computed tomography angiography: virtual calcified plaque subtraction in a vascular phantom

Kwang Nam Jin, Jin Wook Chung, Eun-Ah Park, Whal Lee
2017 Acta Radiologica Open  
Purpose: To evaluate the accuracy of lumen area measurement in calcified plaque by subtraction of DECT and to determine the effect of contrast material concentration, lumen diameter, density, and thickness  ...  General linear model analysis was used to test the effect of variables for log-transformed AU (ln_AU). Results: The AD and AU was calculated to be 6.1 AE 4.8 mm 2 and 69.8 AE 29.4%, respectively.  ...  Funding The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research was supported by a grant of the Korea Health Technology  ... 
doi:10.1177/2058460117717765 pmid:28811929 pmcid:PMC5528944 fatcat:e5oh4bscqbbqlmkissy622jkvu

The role of acquisition and quantification methods in myocardial blood flow estimability for myocardial perfusion imaging CT

Brendan L Eck, Raymond F Muzic, Jacob Levi, Hao Wu, Rachid Fahmi, Yuemeng Li, Anas Fares, Mani Vembar, Amar Dhanantwari, Hiram G Bezerra, David L Wilson
2018 Physics in Medicine and Biology  
The average relative bias (precision) for RPM1, RPM2, and SCM was ≤11% (≤10%) and the models produced high-quality MBF maps in CT simulated phantom data as well as in a porcine model of coronary artery  ...  We used a physiologic model with a CT simulator to generate time-attenuation curves across a range of imaging conditions, i.e. tube current-time product, imaging duration, and temporal sampling, and physiologic  ...  Acknowledgements The authors acknowledge Steve Schomisch and Cassie Cipriano of the CWRU Animal Resource Center for their assistance with animal experiments; Bonnie Hami of University Hospitals Cleveland  ... 
doi:10.1088/1361-6560/aadab6 pmid:30113311 pmcid:PMC6264889 fatcat:k5ktnfrbrnbx7irfpin7u4ylfq
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