Are You a Magnetic Resonance Imaging (MRI) Expert?

1. The liver stores 70% of total body iron and has a short T2* due to local B0 field inhomogeneity.
2. T1 relaxation is accelerated when the Lamor frequency matches the tumbling frequency of molecules.
3. Small molecules like water and CSF have long T1 values, while medium-sized molecules like lipids have relatively short T1 values.
4. Large macromolecules have short T2 values, while smaller molecules have longer T2 values.
5. T2 time is dependent on specific tissue, temperature, and the presence of paramagnetic ions/molecules like Gd.
6. Spin-echo sequences result in lower intensity for long T1 and short T2, and higher intensity for short T1 and long T2.
7. Echo planar imaging is the fastest MRI acquisition method, but has limited spatial resolution.
8. Fast spin echo sequences use a spin echo train to fill k-space faster and reduce slice acquisition time.
9. The Turbo Factor or Echo Train Length (ETL) determines the number of echoes received during the TR time in fast spin echo sequences.
10. It is more common to acquire a smaller number of echoes and acquire the image in a small number of shots in fast spin echo sequences.

This quiz will test your knowledge on Magnetic Resonance Imaging (MRI) and its principles. From T1 and T2 relaxation times, to pulse sequences and image acquisition methods, this quiz covers a range of topics related to MRI. Whether you're a beginner or an expert, this quiz will challenge your understanding of MRI and help you learn something new.