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Question 18N.3.HL.TZ0.c

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.3.HL.TZ0.c
Level HL Paper 3 Time zone TZ0
Command term Describe Question number c Adapted from N/A
c.
[Maximum mark: 2]
18N.3.HL.TZ0.c

In nuclear magnetic resonance imaging (NMR) a patient is exposed to a strong external magnetic field so that the spin of the protons in the body align parallel or antiparallel to the magnetic field. A pulse of a radio frequency (RF) electromagnetic wave is then directed at the patient.

Describe how the measurement in (b) provides diagnostic information for the doctor.

[2]

Markscheme

Relaxation time gives information on tissue type/density/health/OWTTE✔

Location information provides 3D image/OWTTE✔

Syllabus sections