Brainscape's Knowledge GenomeTM

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


See full index

From Flashcardlet > 0-RT205-Units&Formulas > Flashcards

0-RT205-Units&Formulas Flashcards

This flashcard deck was created using Flashcardlet's card creator

0
Q

SI Unit of Mass

A

Kilogram or kg

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

SI Unit of Length

A

Meter or m

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

SI Unit of Time

A

Second or s

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

SI Unit for Current

A

Ampere or A

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

SI Quantity of Mass

A

1 mole [mole]
= 6.23x10^23
= 1 gram of atomic mole contains that many particles

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

SI Unit for Temperature

A

Kelvin [K]

0 degrees Celsius = 273.15 K

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

SI Unit for Luminescent Intensity

A

Candela or cd

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

Derived Units for Velocity

A

Velocity = length/time

= m/s

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

Derived Units for Acceleration

A

Acceleration = Δvelocity/time

= m / s^2

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

Force

A

Force = mass x acceleration
= kg x m/s^2
= Newton [N]

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

Work

A

Work = force x distance
= kg x m^2/s^2
= Joule [J]

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

Electrical Units

A

Coulomb or C

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

1 coulomb = _____

A

1 C = 1 ampere/sec

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

Old Unit for Radioactive Disentegration

A

Curie or Ci

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

1 Curie = _____ disintegrations per second

A

1 Ci = 3.7 x 10^10 disintegrations/sec or dps

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

New Unit for Radioactive Disintegration

A

Becquerel or Bq

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

1 Becquerel = ______

A

1 Bq = 1 dps

= 2.70 x 10^-11 Ci

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

Old Unit for Absorbed Dose

A

rad

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

1 rad = ____ ergs/g absorbed energy

A

1 rad = 100 ergs/g absorbed energy

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

1 Joule = _____ ergs

A

1 J = 10^7 ergs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

1 erg = _____ joules

A

1 erg = 10^-7 J

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

New Unit for Absorbed Dose

A

Gray or Gy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

1 Gray = ____ J/kg

A

1 Gy = 1 J/kg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

1 Gy = ____ rad

A

1 Gy = 100 rad

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

1 cGy = ___ rad

A

1 cGy = 1 rad

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

1 rad = ____ Gray

A

1 rad = 0.01 Gy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

When converting rad to gray…..

A

Multiply by 0.01

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

When converting rem to sievert…….

A

Multiply by 0.01

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Old Unit for Radiation Protection

A

rem (Roentgen Equivalent for Man)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

1 rem = ____ erg/g

A

1 rem = 100 erg/g

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

New Unit for Radiation Protection

A

Sievert or Sv

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

1 Sievert = _____ J/kg

A

1 Sv = 1 J/kg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

1 Sievert = ____ rem

A

1 Sv = 100 rem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

50 mSv = ____ rem

A

50 mSv = 5 rem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Unit for Exposure

A

Roentgen or R

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

1 roentgen = ______ C/kg of charge released in air

A

1 R = 2.58 x 10^-4 C/kg of charge released in air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

Absolute 0 Degrees

A

0 degrees Kelvin (or K)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

0 degrees C = _____ degrees K

A

0 degrees C = 273.15 degrees K

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

To Convert from Celsius to Fahrenheit

A

F = (9/5)(C)+32

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

To Convert from Fahrenheit to Celsius

A

C = (5/9) x (F-32)

40
Q

Prefix micro-

A

10^-6 (symbol: u)

41
Q

Prefix milli-

A

10^-3 (symbol: m)

42
Q

Prefix centi-

A

10^-2 (symbol: c)

43
Q

Prefix deci-

A

10^-1 (symbol: d)

44
Q

Prefix kilo-

A

10^3 (symbol: k)

45
Q

Prefix mega- (symbol: M)

A

10^6

46
Q

1 inch = ____ cm

A

1” = 2.54 cm

47
Q

1 km = ____ miles

A

1 km = 0.62 miles

48
Q

Planck’s Constant [h]

A

6.62 x 10^-34 J*s (per cycle)

49
Q

1 Angstrom = ____ m

A

1 Angstrom = 10^-10 m

50
Q

1 meter = ____ yards

A

1 m = 1.094 yd

51
Q

1 yard = ____ feet

A

1 yd = 3.3’

52
Q

Grid Ratio

A

Grid Ratio = h/d

53
Q

1 eV = ______ Joules

A

1 eV = 1.602 x 10^-19 J

54
Q

(kg)(m/s)^2 = _____

A

(kg)(m/s)^2 = 1 Newton

55
Q

% Efficiency Equation

A

%E = K x Z x kVp
Where K=0.0001,
Z=atomic#

56
Q

Single Phase H.U. Equation

A

H.U. = kVp x mA x time

57
Q

3-Phase 6-Pulse H.U. Equation

A

H.U. = kVp x mA x time x 1.35

58
Q

3-Phase 12-Pulse H.U. Equation

A

H.U. = kVp x mA x time x 1.41

59
Q

Inverse Square Law

A

I1/I2 = (D2/D1)^2

60
Q

Barrier Equation

A

Barrier = Pb^2 / WUT

61
Q

Optical Density Equation

A

O.D. = log (Io/It)

62
Q

Vs/Vp = _____

A

Vs/Vp = Ns/Np

63
Q

Plank’s Constant for KeV is _____

A

Plank’s Constant for KeV is 12.4

64
Q

Ohm’s Law

A

V = I/R

65
Q

Resistance for Series Circuit

A

Rt = R1 + R2 + R3

66
Q

Resistance for Parallel Circuit

A

1/Rt = 1/R1 + 1/R2 + 1/R3

67
Q

HVL Equation

A

HVL = ln2/u

Where u is linear attenuation coefficient

68
Q

SID = ______

A

SID = SOD + OID

69
Q

Speed of Light in a Vacuum (Meters/Sec & Miles/Sec)

A

3x10^8 m/s
OR
186,000 miles/s

70
Q

1 mole

A

1 mole = 6.023 x 10^23 atoms/gram atomic weight

71
Q

Radiographic Formula for Purpose: Quantity and Density

A

mAs = mA x sec

72
Q

Radiographic Formula for Purpose: 15% Rule (Double Density or 1/2 Exposure at IR)

A

kVp x 15%

73
Q

Radiographic Formula for Purpose: Exposure Maintenance Formula
aka “Direct Square Law”

A

mAs~1 / mAs~2 = (D~1)^2 / (D~2)^2

74
Q

Radiographic Formula for Purpose: Source Image Distance

A

SID = SOD + OID

75
Q

Radiographic Formula for Purpose: Determine Exposure (mR) at Certain Distance

A

mR~1 / mR~2 = (SOD)^2 / (SID)^2

76
Q

Radiographic Formula for Purpose: Grid Ratio

A

GR = Height / Distance

77
Q

Common Grid Ratios

A

8:1,
12:1,
etc.

78
Q

Radiographic Formula for Purpose: Half Value Layer

A

HVL = ln~2 / u

Typically as cm, mm, etc.

79
Q

Radiographic Formula for Purpose: Linear Attenuation Coefficient

A

u = ln~2 / HVL

typically as cm^-1

80
Q

Radiographic Formula for Purpose: Intensity Formula

A

I~f = I~0 x e^-(u)(x)

where x = material thickness

81
Q

Radiographic Formula for Purpose: Activity Decay Fornula

A

Af = A0 x e^-(ln~2/T~1/2)(x)

where x = time

82
Q

Radiographic Formula for Purpose: Grid Conversion Factor

A

GCF = Grid mAs / Non-Grid mAs

83
Q

Radiographic Formula for Purpose: Determining New mAs or GR

A

mAs~1 / mAs~2 = (GCF~1) / (GCF~2)

84
Q

OD as Function of Log Exposure
and/or
OD as Function of Dose (Gy)

A

OD = log (I~0/I~T)

85
Q

Radiographic Formula for Purpose: Relative Speed to Produce OD 1+B+F

A

RS = 1 / R~exposure

86
Q

Radiographic Formula for Purpose: Average Gradient

A

Average Gradient = Δ D / Δ E

87
Q

Radiographic Formula for Purpose: Short Scale vs Long Scale,

Contrast, Density and Slope

A

Film Latitude = Exposure~h - Exposure~i

88
Q

Radiographic Formula for Purpose: Calculate mAs with Different Film Speed

A

mAs~1 / mAs~2 = (RS~1) / (RS~2)

89
Q

Radiographic Formula for Purpose: Generator on IR Exposure

A

mAs x CF

90
Q

Radiographic Formula for Purpose: Umbra vs Penumbra

A

P = FSS x OID / SOD

91
Q

Radiographic Formula for Purpose: Magnification

A

M = SID / SOD

92
Q

Radiographic Formula for Purpose: Calculating kVp Per Change in Tissue Thickness

A

New kVp = (2kVp+__cm) + ___kVp

93
Q

Radiographic Formula for Purpose: Wave Model

A 
C = λv 
or
v = C/λ
where
C = light speed (3x10^8 m/s),
λ = wavelength (m),
v = frequency in cycles/sec (Hz)
94
Q

Radiographic Formula for Purpose: Revised Wave Model

A 
E = hc/λ
where
E = 12.4 keV/λ,
h = Planck's Constant = 12.4 keV,
λ = wavelength (meters)
95
Q

Radiographic Formula for Purpose: Transformer Law

A

Vs/Vp = Ns/Np

96
Q

Radiographic Formula for Purpose: Cumulative Effective Dose

A

CED = 10mSv x N

where N = Age in Years

97
Q

Radiographic Formula for Purpose: Photoelectric Effect Formula

A

[(Effect of kVp)(mA)(time)*(SF)] / [(distance^2)x(GCF)]

From Flashcardlet (16 decks)

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