scholarly journals Quantitative contrast-enhanced first-pass cardiac perfusion MRI at 3 tesla with accurate arterial input function and myocardial wall enhancement

2011 ◽  
Vol 34 (3) ◽  
pp. 676-684 ◽  
Author(s):  
Elodie Breton ◽  
Daniel Kim ◽  
Sohae Chung ◽  
Leon Axel
Keyword(s):  
Arterial Input Function ◽  
Input Function ◽  
Perfusion Mri ◽  
3 Tesla ◽  
Cardiac Perfusion ◽  
Myocardial Wall ◽  
Contrast Enhanced ◽  
First Pass

scholarly journals Effect of parallel radiofrequency transmission on arterial input function selection in dynamic contrast-enhanced 3 Tesla pelvic MRI

2015 ◽  
Vol 43 (1) ◽  
pp. 229-235
Author(s):  
Hatim Chafi ◽  
Saba N. Elias ◽  
Huyen T. Nguyen ◽  
Harry T. Friel ◽  
Michael V. Knopp ◽  
...  
Keyword(s):  
Arterial Input Function ◽  
Input Function ◽  
3 Tesla ◽  
Pelvic Mri ◽  
Dynamic Contrast Enhanced ◽  
Contrast Enhanced ◽  
Function Selection

Abstract 3422: Absolute Myocardial Blood Flow Imaging At 3 Tesla: Comparison With 1.5 Tesla

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Timothy Christian ◽  
Stephen P Bell ◽  
Mei Lee L Frankish ◽  
Lawrence Whitesell
Keyword(s):  
Blood Flow ◽  
Myocardial Blood Flow ◽  
Arterial Input Function ◽  
Input Function ◽  
3 Tesla ◽  
Control Zone ◽  
Gadolinium Dtpa ◽  
Absolute Myocardial Blood Flow ◽  
Mri Characteristics ◽  
And Control

First-pass (FP) MR myocardial perfusion (perf) imaging can quantify absolute myocardial blood flow (MBF) but images are of low signal at conventional field strength. Purpose: To determine the accuracy of absolute FP MBF measures at 3 Tesla and compare these measures with FP 1.5T using MBF by microspheres (mcsp) as the gold-standard. Methods: A pig model was used to alter MBF in a coronary artery during FP MRI (intracoronary adenosine followed by ischemia). This produces an active zone with a range of MBF and a control zone. Mcsp were injected into the left atrium with concurrent reference sampling. FP MR perf imaging was performed at 1.5T (n=8) or 3.0T (n=7) using a saturation-recovery gradient echo sequence in short-axis slices (SAX) during a bolus injection of 0.025mmol/kg gadolinium-DTPA. Fermi function deconvolution was performed on active and control ROI from SAX slices with an arterial input function from the LV cavity. These MR values of MBF were matched to mcsp values obtained from SAX slices at pathology. Results: Occlusion MBF was 0.22±.26 ml/min/g, adenosine MBF was 2.11±1.13 ml/min/g and control zone MBF was 0.70±0.22ml/min/g. The correlation of MR FP MRI with mcsp is shown in Figure 1 : 3T) r=0.95, p<0.0001, 1.5T, r=0.94, P<0.0001. The 95% confidence limits were slightly narrower at 3T (3T=0.41ml/min/g, 1.5T=0.55ml/min/g, p=NS. FP MRI characteristics were better at 3T (noise, SNR, contrast enhancement all superior at 3T). In zones where MBF<0.50ml/min/g, the correlation with mcsp was closer at 3T (r=0.55 at 1.5T, r=0.85 at 3T). Conclusion: Absolute MBF by FP perfusion imaging is accurate at both 1.5 and 3T. Signal quality is better at 3T which may confer a benefit in low MBF zones.

Blind estimation of the arterial input function in dynamic contrast-enhanced MRI using purity maximization

2012 ◽  
Vol 68 (5) ◽  
pp. 1439-1449 ◽  
Author(s):  
Yu-Chun Lin ◽  
Tsung-Han Chan ◽  
Chong-Yung Chi ◽  
Shu-Hang Ng ◽  
Hao-Li Liu ◽  
...  
Keyword(s):  
Arterial Input Function ◽  
Input Function ◽  
Blind Estimation ◽  
Dynamic Contrast Enhanced Mri ◽  
Dynamic Contrast Enhanced ◽  
Enhanced Mri ◽  
Contrast Enhanced ◽  
Contrast Enhanced Mri

scholarly journals MR Diagnosis of a Pulmonary Embolism: Comparison of P792 and Gd-DOTA for First-Pass Perfusion MRI and Contrast-Enhanced 3D MRA in a Rabbit Model

2009 ◽  
Vol 10 (5) ◽  
pp. 447 ◽  
Author(s):  
Shella D. Keilholz ◽  
Ugur Bozlar ◽  
Naomi Fujiwara ◽  
Jaime F. Mata ◽  
Stuart S. Berr ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Rabbit Model ◽  
Perfusion Mri ◽  
Pass Perfusion ◽  
Contrast Enhanced ◽  
First Pass ◽  
First Pass Perfusion

Arterial input function of an optical tracer for dynamic contrast enhanced imaging can be determined from pulse oximetry oxygen saturation measurements

2012 ◽  
Vol 57 (24) ◽  
pp. 8285-8295 ◽  
Author(s):  
Jonathan T Elliott ◽  
Eric A Wright ◽  
Kenneth M Tichauer ◽  
Mamadou Diop ◽  
Laura B Morrison ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Pulse Oximetry ◽  
Arterial Input Function ◽  
Input Function ◽  
Dynamic Contrast Enhanced Imaging ◽  
Dynamic Contrast Enhanced ◽  
Contrast Enhanced ◽  
Enhanced Imaging
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