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Chapter-17 Recent Advances in the Field of Magnetic Resonance Imaging

BOOK TITLE: Textbook of Radiology for CT and MRI Technicians with MCQs

Author
1. Khanduri Sachin
ISBN
9789352701766
DOI
10.5005/jp/books/14192_18
Edition
1/e
Publishing Year
2018
Pages
10
Author Affiliations
1. Era’s Lucknow Medical College, Lucknow, Uttar Pradesh, India
Chapter keywords
Functional magnetic resonance imaging, fMRI, blood-oxygen level dependent, BOLD, nuclear magnetic resonance, NMR, magnetic resonance elastography, MRE, magnetic resonance spectroscopy, MRS

Abstract

This chapter describes recent advances in the field of magnetic resonance imaging. Functional magnetic resonance imaging or functional MRI (fMRI) is a functional neuroimaging procedure using magnetic resonance imaging (MRI) technology that measures brain activity by detecting associated changes in blood flow. The primary form of fMRI uses the blood-oxygen level dependent (BOLD) contrast. It is used to map neural activity in the brain or spinal cord of humans or other animals by imaging the change in blood flow (hemodynamic response) related to energy use by brain cells. Functional MRI is used both in the research world, and to a lesser extent, in the clinical world. Magnetic resonance spectroscopy (MRS), or nuclear magnetic resonance (NMR) spectroscopy, is an analytical technique that can often be used to courtesy the magnetic resonance imaging (MRI) in the characterization of tissue. Magnetic resonance elastography (MRE) is a rapidly developing technology for quantitatively assessing the mechanical properties of tissue. Real-time MRI refers to the continuous monitoring of moving objects in real time. Recent advances in real-time MRI result in high-quality images with acquisition times of only approximately 30 milliseconds. In this chapter, multiple choice questions are provided along with their answers.

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