NUCMED

Question 1

Radiolabeled compound used in nuclear medicine.
a. Tracers
b. Radiotracers
c. Radiopharmaceuticals
d. All of the choices

Answer 1

D

Question 2

True about nuclear medicine.
a. Produce transmission images
b. Produce planar images only
c. Form of functional imaging
d. Utilize non-ionizing radiation

Answer 2

C

Question 3

Commonly used radionuclide in nuclear medicine.
a. 123 I
b. 99mTc
c. 11C
d. 32P

Answer 3

B

Question 4

Which of the following can generate tomographic images?
a. CT scan
b. SPECT
c. PET
d. All of the choices

Answer 4

D

Question 5

Who invented the cyclotron?
a. Paul Harper
b. Ernest Lawrence
c. Georg de Hevesy
d. Marie Curie

Answer 5

B

Question 6

All of the following are base quantity except:
a. m
b. sec
c. kg
d. m/s2

Answer 6

D

Question 7

Miniature solar system atomic model.
a. Medieval atom
b. Bohr atom
c. Dalton atom
d. Thomson

Answer 7

B

Question 8

True about gamma ray:
I. electromagnetic energy
II. no charge
III. no mass
IV. travel in velocity of light in a vacuum
a. I & IV
b. I, II & III
c. I,III & IV
d. I,II,III,IV

Answer 8

D

Question 9

Standard system of units based on the meter, the kilogram, and the second.
a. SI
b. Customary unit
c. Traditional unit
d. Derived

Answer 9

A

Question 10

Fast moving electron is an example of:
a. EMR
b. Particulate radiation
c. Electromagnetic
d. Wave

Answer 10

B

Question 11

Decay mode that results of emission of gamma radiation without the emission or capture of a particle by the nucleus.
a. beta minus decay
b. electron capture
c. isomeric transition
d. negatron decay

Answer 11

C

Question 12

The process by which radionuclides spontaneously emits particles and energy to reach stability. a. Radioactive decay
b. half life
c. Radioactive disintegration d. choices a & b

Answer 12

A,C

Question 13

A proton inside the nucleus is converted into a neutron, and the excess energy is emitted as a positively charge electron and a neutrino.
a. alpha decay
b. beta plus decay
c. beta minus decay
d. isomeric transition

Answer 13

B

Question 14

Lowest energy state of nucleus and the most stable nuclear arrangement.
a. Isomeric state
b. Metastable
c. Isobaric state
d. Ground state

Answer 14

D

Question 15

Atoms that have the same number of neutrons but different atomic numbers.
a. isotones
b. isobars
c. isotopes
d. isomers

Answer 15

A

Question 16

The rate of clearance of the radiopharmaceutical from the body is called:
a. biologic half-life
b. radioactive half-life
c. physical half-life
d. effective half-life

Answer 16

A

Question 17

How many half-lives are required before a quantity of radioactive material has decayed to 25 % of its original value? a. 1
b. 2
c. 3
d. 4

Answer 17

B

Question 18

131I has a half-life of 8 days. If there are 400 grams of this sample, how much of 131I will remain after 24 days. a. 50 grams
b. 200 grams
c. 800 grams
d. 100 grams

Answer 18

A

Question 19

Time required for a radioisotope to decay to half its original activity.
a. biologic half-life
b. rad half-life
c. physical half-life
d. effective half-life

Answer 19

C

Question 20

It is the time required for one-half of the initial radioactivity to disappear from an organ or the body both by excretion and by physical decay.
a. biologic half-life
b. radioactive half-life
c. physical half-life
d. effective half-life

Answer 20

A

Question 21

Occur when charged particles lose energy by interacting with orbital electrons in the medium. I. Ionization
II. Excitation
III. Bremsstrahlung
a. I-II
b. I-II-III
c. I only
d. III only

Answer 21

C

Question 22

Which of the following has the lowest penetrability but highly ionizing?
a. Alpha particle
b. Beta particle
c. Electron
d. Electromagnetic radiation

Answer 22

A

Question 23

Which of the following particles tend to travels in straight lines?
a. Electrons
b. Beta particles
c. Alpha particles
d. Negatron

Answer 23

A

Question 24

When a charged particle travels in a medium at a speed greater than the speed of light in that medium. a. Diffraction effect
b. Annihilation interaction
c. Cherenkov effect
d. Fission

Answer 24

C

Question 25

Occur when the energy transferred to an electron does not exceed its binding energy. a. Characteristic x-ray b. Bremsstrahlung x-ray c. Ionization d. Excitation

Answer 25

C

Question 26

Special case of compton effect if the photon is scattered right angle to its original direction and the angle of electron emission depends on the energy. a. Direct hit b. Grazing hit c. 90 degrees scatter d. backscattering

Answer 26

C

Question 27

Special case of Compton effect when the electron travel forward and the scattered photon travels backward. a. Direct hit b. Grazing hit c. 90 degrees scatter d. 45 decrees scatter

Answer 27

A

Question 28

Particles involve in annihilation interaction. b. Proton and neutron c. Positron and proton d. Positron and electron e. Negatron and electron

Answer 28

D

Question 29

4. Minimum energy required for pair production. a. 511 keV b. 1.02 keV c. 1.02 MeV d. 511 keV

Answer 29

C

Question 30

True about photoelectric effect. a. production of scattered radiation b. Photon-outer shell interaction c. Ionization of inner shell electron d. All of the choices

Answer 30

A

Question 31

Which of the following instruments should be used to locate a lost radioactive source or detect low-level radioactive contamination? a. GM detector b. Proportional counter c. Ionization chamber-type survey meter (cutie pie) d. Scintillation detector

Answer 31

A

Question 32

Which of the following instruments is used to calibrate radiographic and fluoroscopic x-ray equipment? a. Proportional counter b. GM detector c. Ionization chamber with electrometer d. Pocket ionization chamber

Answer 32

C

Question 33

How does a GM detector alert the operator to the presence of ionizing radiation? a. Light indicator b. Audible sound c. Vibration d. None of the choices

Answer 33

B

Question 34

Electron emission after light stimulation. a. Thermionic emission b. Fluorescence c. Photoemission d. Phosphorescence

Answer 34

C

Question 35

All of the following statement are correct EXCEPT: a. The ionization of gas is the basis for gas-filled radiation detectors. b. A photocathode is a device that emits light when illuminated. c. Types of gas-filled radiation survey instruments include the ionization chamber-type survey meter (cutie pie), the proportional counter, and the GM detector. d. Radiation survey instruments for area monitoring must be durable and easy to carry.

Answer 35

B