Nuclear Medicine

Question 1

WHAT IS NUCLEAR MEDICINE?

Answer 1

Radioactive substance injected into the body to produce an image

Question 2

WHAT DOES NUCLEAR MEDICINE ASSESS?

Answer 2

The function of the body rather than anatomy

Question 3

HOW DOES NUCLEAR MEDICINE WORK?

Answer 3

Radio pharmaceutical is put in the body

It emits gamma rays

Detected by a gamma camera which shows its distribution

Question 4

WHAT IS A RADIOPHARMACEUTICAL?

Answer 4

A drug mixed with a radionuclide

Different drugs to different parts of the body

Question 5

WHAT ARE THE IDEAL CHARACTERISTICS OF A RADIONUCLIDE?

Answer 5

Similar half life as length of test

Energy between 50 and 300 Kev

Clears from the body quickly

Simple to prepare

Readily available

Question 6

WHAT IS TECHNECIUM 99m?

Answer 6

Most commonly used radionuclide

Combines with a number of drugs easily

6 hour half life which is good

Clears form the body quickly

Question 7

FEATURES INSIDE THE CAMERA

Answer 7

Collimators

Scintillation crystals concerting gamma rays to light

Photo multiplier tubes converting light into electric signals

Question 8

WHAT IS RESOLUTION AMD SENSITIVITY?

Answer 8

Resolution- sharpness of image

Sensitivity - number of accepted gamma rays