Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Laura Nappi Course & Mosby Questions > Radiation Safety 1 (Workbook) > Flashcards

Radiation Safety 1 (Workbook) Flashcards

1
Q

Helium nuclei

A

Alpha particle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Alpha particle charge

A

+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Beta particles are the same as __.

- Charge?

A

electrons

negative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Similar to x-rays, but originate in nucleus rather than outer shell.

A

Gamma rays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Gammy ray charge

A

no charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Activity formula

A

A fin = A initial ^-lambda*t

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Unit for activity

A

Ci

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Definition of ___: emission of particles and energy from an atom in attempt to become stable.

A

Radioactivity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Same # of protons, diff # of neutrons

A

Isotope

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

…..

A

Isobar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Same # of neutrons, diff # protons

A

Isotone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Metastable, everything is the same

A

Isomer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Definition of ___: time it takes for activity to become half of initial activity

A

Half-life

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Definition of __: Avg lifetime decay

A

Mean life

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

4 types of brachy therapy:

A

Intracavitary
Intraluminal
Intervascular
Interstitital

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Type of brachy used for cervix, vagina, uterus.

- examples of applicators for cervical tx (2)

A

Intercavitary

- tandem & ovoid, fletcher suite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Type of brachy:
Within a body tube
- examples

A

Interluminal

- bronchial & esophageal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Type of brachy:

Use a catheter/needle to place within tissue (seeds)

A

Interstitial

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Permanent brachy seeds sources: (2)

- What is most common source used in prostate tx?

A

Gold, I-125

- Gold

20
Q

Rd an Ir seeds are temporary or permanent seeds?

A

Temporary

21
Q

Dose for LDR

A

< 2Gy/hr

22
Q

Dose for HDR

A

> 12 Gy/hr

23
Q

I-131 use

A

thyroid

24
Q

I-125 use: (3)

A

brain
prostate permanent implant
ocular plaque temporary implant

25
Q

Pd-103 use

A

prostate permanent implant

26
Q

Cs-137

A

Cervix

Uterus

27
Q

Strontium-90 and 89 use:

A

eye

28
Q

Yttrium-90 use: (2)

A

liver

lymphoma

29
Q

Ir-192 use:

A

temporary HDR seeds

30
Q

Gold use:

A

prostate permanent seeds

31
Q

Cathode is neg or pos?

A

Neg

32
Q

Anode is neg or pos?

A

Pos

33
Q

Define cathode:

- material made of?

A

Negatively charged electrode that releases electrons in thermionic emission.
- Tungsten

34
Q

What is the anode?

- material made of?

A

Positively charged electrode (target).

- Tungsten

35
Q

Type of anode we have in linacs?

A

Rotating anode

36
Q

Do linacs have a klystron or a magnetron?

A

Klystron

37
Q

Linac energy range?

A

4MV - 25MV

38
Q

Orthovoltage energy range?

A

150kV - 500kV

39
Q

Superficial energy range?

A

50kV - 150kV

40
Q 
Target interactions (interactions w/matter):
Electron slows down near nucleus and changes direction.
A

Bremsstrahlung

41
Q 
Target interactions (interactions w/matter):
Electron interacts with inner shell electron, causing electron to be ejected. Outer shell then fills vacancy.
A

Characteristic

42
Q 
Target interactions (interactions w/matter):
Only interaction occurring in MV range, but also occurs in kV range.
A

Bremsstrahlung

43
Q 
Target interactions (interactions w/matter):
Occurs only in diagnostic ranges
A

Characteristic

44
Q

Velocity of a photon:

A

3.8 x 10^8 m/s

45
Q

Coherent Scattering… p.23

A

….

Laura Nappi Course & Mosby Questions (48 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions