MRI in Practice Chapter 1 Review Questions

Front

Who is attributed as the founder of the classical theory of physics?

Back

Sir Isaac Newton

Front

Why is more RF energy needed to cause excitation at high-field strengths?

Back

Because energy and frequency are related, and as B0 increases, more energy is needed for resonance.

Front

Why is protium used in MRI?

Back

Abundance and large magnetic moment

Front

Why is an alternating voltage induced in a conductor placed in the transverse plane?

Back

Because the transverse magnetization moves relative to the coil, inducing a varying voltage.

Front

What are the results of resonance in MRI?

Back

Coherent magnetization in the transverse plane

Front

Define RF energy in the context of MRI.

Back

RF energy refers to radiofrequency energy used to excite nuclei in a magnetic field.

Front

What is the significance of B0 in MRI?

Back

B0 is the main magnetic field strength that influences the resonance frequency of nuclei.

Front

Explain the term 'transverse magnetization'.

Back

Transverse magnetization refers to the component of magnetization that lies in the plane perpendicular to the main magnetic field.

Front

What role does the magnetic moment play in MRI?

Back

The magnetic moment determines how nuclei align with the magnetic field and respond to RF energy.

Front

Describe the process of resonance in MRI.

Back

Resonance occurs when the frequency of RF energy matches the natural frequency of precessing nuclei, leading to energy absorption.