Comparison of maximum signal intensity of contrast agent on t1-weighted images using spin echo, fast spin echo and inversion recovery sequences

M Nazarpoor, M Poureisa… - Iranian Journal of …, 2012 - pmc.ncbi.nlm.nih.gov
Background MRI is not able to directly measure the concentration of contrast agent. It is
measured indirectly from the signal intensity (SI). It is very important to know how much …

Effects of inversion and saturation times on relationships between contrast agent concentrations and signal intensities of T 1-weighted magnetic …

M Nazarpoor - Radiological physics and technology, 2010 - Springer
The present study was an attempt to investigate the effect of variation of inversion time (TI)
and saturation time (TS) on the linear relationship between contrast agent concentration and …

The effect of repetition time on the maximum linear relationship between contrast agent concentration and signal intensity on T1-weighted image using inversion …

M NAZARPOUR - 2009 - sid.ir
Background/Objective: The relaxation time T1 depends on the concentration of
paramagnetic contrast agent. To calculate perfusion parameters from dynamic contrast …

Effect of concentration of contrast agent on the inflow effect for measuring absolute perfusion by use of inversion recovery T1-weighted TurboFLASH images

M Nazarpoor - Radiological physics and technology, 2012 - Springer
Previous studies have shown that the organ blood flow (OBF) calculated from the T 1-
weighted MRI technique was lower than expected. The inflow correction was one of the …

[PDF][PDF] Effect of echo time on the maximum relationship between contrast agent concentration and signal intensity using FLAIR sequence

M Nazarpoor, M Poureisa, MH Daghighi - Iranian Journal of Medical Physics, 2013 - sid.ir
Contrast-enhanced fluid-attenuated inversion recovery (FLAIR) is one of the MRI sequences
that can be used for detection and evaluation of pathological changes in the brain. In this …

[HTML][HTML] The effect of inversion times on the minimum signal intensity of the contrast agent concentration using inversion recovery t1-weighted fast imaging sequence

M Nazarpoor - Medical journal of the Islamic Republic of Iran, 2014 - ncbi.nlm.nih.gov
Background: Inversion recovery (IR) pulse sequences can generate T1-weighted images
with a different range of inversion time (TI) to suppress or null the signal intensity (SI) for a …

[PDF][PDF] Inflow effect correction in perfusion measurement of normal subjects with T1-weighted images using inversion recovery sequences

M Nazarpoor, PS Morgan - 2010 - sid.ir
Background/Objective: A dynamic contrast-enhanced T1 technique has been applied for
calculating cerebral blood flow (CBF) with MRI. Previous studies have shown that the CBF …

INFLOW EFFECT OF SIGNAL INTENSITY FOR THE CENTRE OUT PHASE-ENCODING AND LINEAR PHASE-ENCODING ACQUISITIONS ON INVERSION …

M NAZARPOUR - 2009 - sid.ir
Background: Two common acquisition strategies in MRI are CENTRE OUT PHASE-
ENCODING (COPE) and LINEAR PHASE-ENCODING (LPE). Purpose: The objectives of this …

Optimal Dose of Contrast agent Concentration, Using Spin Echo and Inversion Recovery T1-Weighted Sequences during MRI

M Nazarpoor, M Poureisa… - Medical Journal of Tabriz …, 2013 - mj.tbzmed.ac.ir
Abstract Background and Objectives: It is important to know how much contrast agent should
be used to receive the maximum signal intensity (SI). The aim of this study was to investigate …

Maximum Relationship between Contrast Agent Concentration and Signal Intensity in 0.3 T and 1.5 T using T1-weighted Spin Echo Sequence

M Nazarpoor, Z Mayabi, A Shfaie… - Medical Journal of …, 2011 - mj.tbzmed.ac.ir
Abstract Background and Objectives: Determination of maximum injected contrast agent
leading to maximum signal intensity (SI) is of great importance in magnetic resonance …