Understanding Magnetic Resonance ImagingMagnetic resonance imaging (MRI) is the most technically dependent imaging technique in radiology. To perform and interpret MRI studies correctly, an understanding of the basic underlying principles is essential. Understanding Magnetic Resonance Imaging explains the pulse sequences, imaging options, and coils used to produce MR images, providing a strong foundation for performing and interpreting imaging studies. The text is complemented by more than 100 figures and 25 photomicrographs illustrating the techniques discussed. Radiology residents, MR technologists, and radiologists should not be without Understanding Magnetic Resonance Imaging-the only single resource that explains all technical aspects of MRI, including recent advances, and presents all imaging options. |
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aligned amplitude atoms B₁ bandwidth coil conventional spin echo cosine functions cycle denoted dephasing echo pulse sequence effect encoding gradient equal excitation pulse external field external magnetic field ferromagnetic Figure flow Fourier series Fourier transform frequency component frequency-encoding direction frequency-encoding gradient ghost artifact gradient echo gradient is applied gradient strength GRE sequences imaging sequence individual protons lipid protons local field longitudinal magnetization magnetic field magnetic resonance imaging main magnetic field motion negative oriented periodic function phase change induced phase matrix phase-encoding direction phase-encoding gradient pixel positive z axis precess precessional frequency pulse is applied read gradient resonance frequency result RF pulse rotating saturation pulses section select gradient signal bandwidth signal intensity signal loss signal measurement signal void spin echo sequences stimulated echo superconducting Suppose T2 relaxation TR interval transverse magnetization usually referred vector velocity vessel voltage voxel water molecules water protons zero