Mahmood Nazarpoor
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View article: Investigating TE effects on the relationship between signal intensity and PVP-grafted SPION concentration in T2-weighted Spin Echo imaging
Investigating TE effects on the relationship between signal intensity and PVP-grafted SPION concentration in T2-weighted Spin Echo imaging Open
Background. Because ionizing radiation and radioactive materials are not used in MRI images and their good spatial resolution, it has been widely used in the diagnosis of diseases. But for a more accurate diagnosis of some diseases, it is …
View article: The Direction of Flow and Phase-encoding Schemes Effects on Signal Intensity in T1-weighted Inversion Recovery TurboFLASH Images
The Direction of Flow and Phase-encoding Schemes Effects on Signal Intensity in T1-weighted Inversion Recovery TurboFLASH Images Open
The COPE scheme was better than the LPE scheme in measuring perfusion since the velocity and direction of blood flow affect SI less.
View article: Potential positive MRI contrast agent based on PVP-grafted superparamagnetic iron oxide nanoparticles with various repetition times
Potential positive MRI contrast agent based on PVP-grafted superparamagnetic iron oxide nanoparticles with various repetition times Open
Objective(s): The present study aimed to evaluate the capability of synthesized and modified superparamagnetic iron oxide nanoparticles (SPIONs) as the positive contrast agent in magnetic resonance imaging (MRI) by investigating the effect…
View article: Evaluation of Maximum and Minimum Signal Intensity and the Linear Relationship between Concentration and Signal Intensity in Saturation Recovery T1-weighted Images by use of a Turbo Fast Low-Angle Shot Sequence
Evaluation of Maximum and Minimum Signal Intensity and the Linear Relationship between Concentration and Signal Intensity in Saturation Recovery T1-weighted Images by use of a Turbo Fast Low-Angle Shot Sequence Open
Background: The relationship between the concentration of contrast agents and signal intensity (SI) are affected by some image parameters, phase-encoding scheme, magnetic field strength, image sequences, and iron oxide nanoparticles used a…
View article: Effect of Inversion Time on the Linear Correlation between Polyethylene Glycol Coated Iron Oxide Nanoparticles Concentration and Signal Intensity in Inversion Recovery MRI Pulse Sequence
Effect of Inversion Time on the Linear Correlation between Polyethylene Glycol Coated Iron Oxide Nanoparticles Concentration and Signal Intensity in Inversion Recovery MRI Pulse Sequence Open
Background and purpose: In MRI the concentration of contrast agent is indirectly measured from signal intensity (SI). It is important to find the maximum linear relationship between SI and concentration of the iron oxide nanoparticles for …
View article: Effect of Flip Angle on the Correlation Between Signal Intensity and Different Concentrations of Iron Oxide Nanoparticles Using T1-Weighted Turbo-FLASH Inversion Recovery Sequence
Effect of Flip Angle on the Correlation Between Signal Intensity and Different Concentrations of Iron Oxide Nanoparticles Using T1-Weighted Turbo-FLASH Inversion Recovery Sequence Open
The maximum SI will be increased at higher flip angles with non-linear relationship between SI and nanoparticle concentration. The result shows that an increase in the flip angle leads to a decrease in the range of the linearity. The optim…
View article: Effect of iron oxide nanoparticles coating type on the relationship between nanoparticles concentration and signal intensity in inversion recovery T1-weighted MRI.
Effect of iron oxide nanoparticles coating type on the relationship between nanoparticles concentration and signal intensity in inversion recovery T1-weighted MRI. Open
The maximum non-linear corrected SI of the carboxydextran-coated nanoparticles was slightly higher than that of the PEG-coated nanoparticles at similar TIs. However, the PEG-coated nanoparticles were better than the carboxydextran-coated n…