P3.1 Uses of X-rays and ultrasound# Flashcards
1
Q
How is ultrasound used?
A
Uses HIGH FREQ. to make IMAGE of part inside body
2
Q
Give an advantage and a disadvantage of using ultrasound?
A
+Non-ionising=safe
-Fuzzy image
3
Q
What are x-rays transmitted and absorbed by?
A
Transmitted; healthy tissue
Absorbed; denser materials
4
Q
Give an advantage and a disadvantage of using x-rays
A
+Clear images of bone and metal
- But not much else
- IONISING, high dose could= cancer
5
Q
How do CT scans work?
A
Uses x-rays in various positions. Processed by computer
–> 3D
6
Q
Give two advantages of using a CT scan
A
Detailed; CAN DISTINGUISH BETWEEN DIFF. TYPES OF SOFT TISSUE unlike x-rays
High quality
7
Q
Give two disadvantages of using a CT scan
A
More radiation that a single x-ray
Equipment=more expensive
