Match!
Orlando P. Simonetti
Ohio State University
RadiologyMagnetic resonance imagingCardiologyAngiologyMedicine
278Publications
41H-index
12.7kCitations
What is this?
Publications 254
Newest
#1Adam Rich (OSU: Ohio State University)H-Index: 2
#2Michael Gregg (OSU: Ohio State University)
Last. Rizwan Ahmad (OSU: Ohio State University)H-Index: 12
view all 7 authors...
PURPOSE: To develop a variable density Cartesian sampling method that allows retrospective adjustment of temporal resolution for dynamic MRI applications and to validate it in real-time phase contrast MRI (PC-MRI). THEORY AND METHODS: The proposed method, called CArtesian sampling with Variable density and Adjustable temporal resolution (CAVA), begins by producing a sequence of phase encoding indices based on the golden ratio increment. Then, variable density is introduced by nonlinear stretchin...
Source
#1Yin Ge (Brigham and Women's Hospital)H-Index: 10
#2Ankur Pandya (Harvard University)H-Index: 17
Last. Amit Patel (U of C: University of Chicago)H-Index: 49
view all 23 authors...
Abstract Objectives The aim of this study was to compare, using results from the multicenter SPINS (Stress CMR Perfusion Imaging in the United States) study, the incremental cost-effectiveness of a stress cardiovascular magnetic resonance (CMR)–first strategy against 4 other clinical strategies for patients with stable symptoms suspicious for myocardial ischemia: 1) immediate x-ray coronary angiography (XCA) with selective fractional flow reserve for all patients; 2) single-photon emission compu...
Source
#1Juliet Varghese (The Ohio State University Wexner Medical Center)H-Index: 6
#2Jason Craft (The Ohio State University Wexner Medical Center)
Last. Orlando P. Simonetti (OSU: Ohio State University)H-Index: 41
view all 8 authors...
A low field strength (B0) system could increase cardiac MRI availability for patients otherwise contraindicated at higher field. Lower equipment costs could also broaden cardiac MR accessibility. The current study investigated the feasibility of cardiac function with steady-state free precession and flow assessment with phase contrast (PC) cine images at 0.35 T, and evaluated differences in myocardial relaxation times using quantitative T1, T2 and T2* maps by comparison with 1.5 and 3 T results ...
Source
#1Juliet Varghese (OSU: Ohio State University)H-Index: 6
#2Matthew Smyke (OSU: Ohio State University)H-Index: 1
Last. Orlando P. Simonetti (OSU: Ohio State University)H-Index: 41
view all 9 authors...
BACKGROUND: The current standard method to measure intracardiac oxygen (O2 ) saturation is by invasive catheterization. Accurate noninvasive blood O2 saturation by MRI could potentially reduce the duration and risk of invasive diagnostic procedures. PURPOSE: To noninvasively determine blood oxygen saturation in the heart with MRI and compare the accuracy with catheter measurements. STUDY TYPE: Prospective. SUBJECTS: Thirty-two patients referred for right heart catheterization (RHC) and five heal...
Source
#1Aaron A. PruittH-Index: 1
#2Adam Rich (OSU: Ohio State University)H-Index: 2
Last. Rizwan AhmadH-Index: 12
view all 7 authors...
Purpose: To develop and validate an acquisition and processing technique that enables fully self-gated 4D flow imaging with whole-heart coverage in a fixed five-minute scan. Theory and Methods: The data are acquired continuously using Cartesian sampling and sorted into respiratory and cardiac bins using the self-gating signal. The reconstruction is performed using a recently proposed Bayesian method called ReVEAL4D. For validation, three acquisitions were performed from eight healthy volunteers:...
#1Subha V. RamanH-Index: 36
#2Rory HachamovitchH-Index: 59
Last. Orlando P. SimonettiH-Index: 41
view all 10 authors...
Vasodilator stress cardiac magnetic resonance (CMR) offers superior accuracy over single-photon emission computed tomography (SPECT) ([1][1]); however, pharmacological stress cannot reproduce exertional symptoms or signs. We have shown that MR-compatible treadmill stress with CMR offers excellent
1 CitationsSource
#1Chong Chen (OSU: Ohio State University)H-Index: 4
#2Yingmin Liu (The Ohio State University Wexner Medical Center)
Last. Rizwan Ahmad (OSU: Ohio State University)H-Index: 12
view all 4 authors...
In real-time (RT) cardiac cine imaging, a stack of 2D slices is collected sequentially under free-breathing conditions. A complete heartbeat from each slice is then used for cardiac function quantification. The inter-slice respiratory mismatch can compromise accurate quantification of cardiac function. Methods based on principal components analysis (PCA) have been proposed to extract the respiratory signal from RT cardiac cine, but these methods cannot resolve the inter-slice sign ambiguity of t...
Source
Source
#1Jennifer ErleyH-Index: 2
#2Victoria ZieschangH-Index: 2
Last. Amit Patel (U of C: University of Chicago)H-Index: 49
view all 17 authors...
Myocardial strain is a convenient parameter to quantify left ventricular (LV) function. Fast strain-encoding (fSENC) enables the acquisition of cardiovascular magnetic resonance images for strain-measurement within a few heartbeats during free-breathing. It is necessary to analyze inter-vendor agreement of techniques to determine strain, such as fSENC, in order to compare existing studies and plan multi-center studies. Therefore, the aim of this study was to investigate inter-vendor agreement an...
Source
#1Chong Chen (OSU: Ohio State University)H-Index: 4
Last. Rizwan Ahmad (OSU: Ohio State University)H-Index: 12
view all 4 authors...
In real-time (RT) cardiac cine imaging, a stack of 2D slices is collected sequentially under free-breathing conditions. A complete heartbeat from each slice is then used for cardiac function quantification. The inter-slice respiratory mismatch can compromise accurate quantification of cardiac function. Methods based on principal components analysis (PCA) have been proposed to extract the respiratory signal from RT cardiac cine, but these methods cannot resolve the inter-slice sign ambiguity of t...
12345678910