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Question 19M.3.HL.TZ1.c

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Date May 2019 Marks available [Maximum mark: 2] Reference code 19M.3.HL.TZ1.c
Level HL Paper 3 Time zone TZ1
Command term Suggest Question number c Adapted from N/A
c.
[Maximum mark: 2]
19M.3.HL.TZ1.c

Ultrasound can be used to measure the dimensions of a blood vessel. Suggest why a B scan is preferable to an A scan for this application.

[2]

Markscheme

a B scan is a computer generated combination of a large number of A scans ✔

allowing a measurement in different directions/two dimensional image ✔

Examiners report

Part c) was also difficult to answer for most of the candidates.