Výsledky vyhledávání - "Juan Carlos Ramirez Giraldo"

Time-resolved, Cardiac-gated Computed Tomography After Endovascular Ascending Aortic and Arch Repair

Autor: Marton Berczeli, Ponraj Chinnadurai, Juan Carlos Ramirez-Giraldo, Zsolt Garami, Alan B. Lumsden, Marvin D. Atkins, Su Min Chang

Publikováno v: The Annals of Thoracic Surgery. 113:1685-1691

Better time-resolved imaging of stent grafts in the ascending aorta and arch accounting for cardiac motion is necessary to understand device-related complications and endoleaks. This report describes dynamic time-resolved computed tomographic angiogr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fba70f4bbdad212fe26f8d6389e5558e
https://doi.org/10.1016/j.athoracsur.2021.11.054

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Prognostic Value of Computed Tomography-Derived Fractional Flow Reserve Comparison With Myocardial Perfusion Imaging

Autor: Talal Alnabelsi, Myra Cocker, Su Min Chang, Ahmed Ibrahim Ahmed, William A. Zoghbi, Faisal Nabi, Juan Carlos Ramirez-Giraldo, Mouaz H. Al-Mallah, John J. Mahmarian, Yushui Han, Mahmoud Al Rifai, Chris Schwemmer, Neal S. Kleiman

Publikováno v: JACC: Cardiovascular Imaging. 15:284-295

The aim of this study was to compare the incremental prognostic value of coronary computed tomography (CT) angiography (CCTA)-derived machine learning fractional flow reserve CT (ML-FFRct) versus that of ischemia detected on single-photon emission-co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4aa4d2ec69ab8e06267df85c2b190d8c
https://doi.org/10.1016/j.jcmg.2021.09.007

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Comparison of 100-Kilovoltage Tin Filtration With Advanced Modeled Iterative Reconstruction Protocol to an Automated Kilovoltage Selection With Filtered Back Projection Protocol on Radiation Dose and Image Quality in Pediatric Noncontrast-Enhanced Chest Computed Tomography

Autor: Juan Carlos Ramirez-Giraldo, Marilyn J. Siegel, Sanjeev Bhalla, Demetrios A. Raptis

Publikováno v: Journal of Computer Assisted Tomography. 46:64-70

The aim of the study was to compare effects of a 100-kilovoltage (kVp) tin filtration (Sn100kVp) with Advanced Modeled Iterative Reconstruction (ADMIRE) protocol to an automated kVp selection and filtered back projection (FBP) protocol on radiation d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3c00a6319d5cae09f87b02c2be361e6
https://doi.org/10.1097/rct.0000000000001248

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Comparison of radiation dose and image quality between contrast-enhanced single- and dual-energy abdominopelvic computed tomography in children as a function of patient size

Autor: Juan Carlos Ramirez-Giraldo, Joyce Mhlanga, Marilyn J. Siegel, Amber Salter

Publikováno v: Pediatric Radiology. 51:2000-2008

Widespread adoption of dual-energy computed tomography (DECT) requires evidence it does not cause higher radiation dose than conventional single-energy CT (SECT). While a few publications involving pediatric patients exist, most have focused on small

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::96352175efb990fcbe899500132b221b
https://doi.org/10.1007/s00247-021-05127-3

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Can radiomic analysis of a single-phase dual-energy CT improve the diagnostic accuracy of differentiating enhancing from non-enhancing small renal lesions?

Autor: Peijie Lyu, Kyle Lafata, Mathias Meyer, Francesca Rigiroli, Juan Carlos Ramirez-Giraldo, Daniele Marin, Siyun Yang, Yuqin Ding

Publikováno v: Acta Radiologica. 63:828-838

Background The value of dual-energy computed tomography (DECT)-based radiomics in renal lesions is unknown. Purpose To develop DECT-based radiomic models and assess their incremental values in comparison to conventional measurements for differentiati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64fcf418ace3c79f3d187bc4c7872d7b
https://doi.org/10.1177/02841851211010396

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Dual-Energy CT Material Density Iodine Quantification for Distinguishing Vascular From Nonvascular Renal Lesions: Normalization Reduces Intermanufacturer Threshold Variability

Autor: Mathias Meyer, Nicholas Rudnick, Rendon C. Nelson, Daniele Marin, Michael D. Rosenberg, Juan Carlos Ramirez-Giraldo, Alfredo E. Farjat, Scott Harring, Federica Vernuccio, Bhavik N. Patel, Benjamin Godwin

Publikováno v: American Journal of Roentgenology. 212:366-376

OBJECTIVE. The purpose of this study was to determine whether a single, uniform normalized iodine threshold reduces variability and enables reliable differentiation between vascular and nonvascular renal lesions independent of the dual-energy CT (DEC

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c429a3e3ed5c8cdb0192c359d92be816
https://doi.org/10.2214/ajr.18.20115

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Variability of quantitative measurements of metastatic liver lesions: a multi-radiation-dose-level and multi-reader comparison

Autor: Daniele Marin, Rendon C. Nelson, Bhavik N. Patel, Yuqin Ding, Juan Carlos Ramirez-Giraldo, Justin Solomon, Hannah Williamson, Mathias Meyer, Hans-Christoph Becker, Federica Vernuccio, Fernando Gonzalez, Ehsan Samei

Publikováno v: Abdominal Radiology. 46:226-236

To evaluate the variability of quantitative measurements of metastatic liver lesions by using a multi-radiation-dose-level and multi-reader comparison. Twenty-three study subjects (mean age, 60 years) with 39 liver lesions who underwent a single-ener

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7394c65b37c1533a3d3d971b80022eda
https://doi.org/10.1007/s00261-020-02601-8

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Flat-panel dual-energy head computed tomography in the angiography suite after thrombectomy for acute stroke: A clinical feasibility study

Autor: Julie DiNitto, Michael Feldman, Heather Grimaudo, Nishit Mummareddy, Seoiyoung Ahn, Akshay Bhamidipati, Drew Anderson, Juan Carlos Ramirez-Giraldo, Matthew Fusco, Rohan Chitale, Michael T Froehler

Publikováno v: Interventional Neuroradiology. :159101992311574

Background Management of large vessel occlusion (LVO) patients after thrombectomy is affected by the presence of intracranial hemorrhage (ICH) on post-procedure imaging. Differentiating contrast staining from hemorrhage on post-procedural imaging has

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7bdffef1d0587d77616a1e59e1e5f659
https://doi.org/10.1177/15910199231157462

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