Ppppphysics

Question 1

What unit is used to measure magnetic flux of an MRI?

Answer 1

Weber

Question 2

What unit is used to measure magnetic strength of an MRI?

Answer 2

Tesla

Question 3

What is the dose of radiotherapy usually used in cervical cancer?

Answer 3

2.0 Gy

Gy unit = Gray

Question 4

What is the average strength of magnetic field generated by MRI? Include unit

Answer 4

1.5 - 3 Tesla

Question 5

Which unit is used in dose of radiation from an x-ray?

Answer 5

Grey

Question 6

Most common side effect of radiotherapy

Answer 6

Fatigue (experienced by 80%)

Question 7

What frequency of US is used in TVUS?

Answer 7

5-7.5 MHz

Question 8

What frequency of US is used in trans abdominal US?

Answer 8

3-3.5 MHz

Question 9

Radiotherapy MOA

Answer 9

DNA damage
Free radical generation

Question 10

What frequency should be used for monopolar diathermy

Answer 10

500 KHz

Question 11

Which laser should you use in twin to twin transfusion syndrome

Answer 11

Diode

(Di-twins)

Question 12

Dose of radiation to breast during CTPA

Answer 12

10-20mGy

10mGy = 13% increased risk of breast cancer on back ground risk

Question 13

How do DEXA scans measure bone density?

Answer 13

Measure absorption from two different x-ray beams with different energy levels zapped at the same time

Question 14

Abdominal CT radiation is equivalent to how many CXRs?

Answer 14

400