rise app questions Flashcards by James Korf

Very high radiation area _ /hr at _ m

5 Gy/hr at 1 meter

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Frequency of QC: Dose Calibrator Consstancy

Daily

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I-131 patient can be release if administered dose is < _ or dose rate is < _ /hr at 1 m

33mCi, 7mrem (70uSv/hr)

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Total fetal dose per pregnancy

5 ,Sv

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Area for radioactive package wipe test

300 cm2

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CNS lethal dose and time

> 20-50 Gy, 1-2 days

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Medical event if dose differs from prescribed dose _ mSV effective, _ dose equivalent for an organ, or _ %

50mSv, 500mSv, 20%

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Permanent sterility dose, men

6 Gy

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Critical organ: MAA

Lungs

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Critical Organ: Pertechnetate

Stomach

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Critical organ: Xe-133

Airways/trachea

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Critical organ: HIDA

GB wall

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Critical Organ: Sestamibi

Proximal colon

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Critical organ: Sulfur colloid oral

Proximal colon

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Critical organ: Octreotide

Spleen

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Critical organ: In-111 WBC

Spleen

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Critical organ: Tc SC IV

Liver

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Critical organ: Damaged RBCs

Spleen

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Critical organ: Gallium 67

Distal colon

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Critical organ: DMSA

Renal cortex

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Critical organ: Thallium

Renal Cortex

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Critical organ: Mag 3

Bladder

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Critical organ: I-123 MIBG

Bladder

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Critical organ: MDP

Bladder

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Critical organ: Prostascint (indium)

Liver

Critical organ: I-131 MIBG

Liver

Notify NRC in 24 hours if single event dose exceeds _ total effective, _ eye dose equivalent, or _ swallow dose equiv

50 msv, 150 msv, 500 smv (same as occupational)

How long until individual and NRC notified for medical event

<24 hours patient | <15 days NRC

QC frequency: Gamma camera Energy window setting

each patient

Acute dose to cause cataract

2 Gy

QC frequency: Survey meter battery

before each use

Req's to store a byproduct for decay

T1/2 <120 days No surface activity Labels removed

QC frequency: radiation survey for storage area

Weekly

T 1/2: Moly 99

66 hours

Photopeaks Moly 99

740 and 778 kev

Occupation anual dose limit

50 msv effective, 150 lense, 500 other organ

QC frequency: Dose calibrator accuaracy

Annually

Transient skin erythema dose?

>2 Gy

QC frequency: Gamma camera energy resolution

Annually

Unnresitrcted area must have dose rates of < _ over _ consecutive days

1 mSv over 7 days

Temporary epilation (hair loss) dose

3-5 Gy

Sealed sources dose must not exceed

30 mCi

QC frequency: Sealed source leaks (wipe test)

6 months

Packages must be measured at _ m for _

1 meter for TI

Acceptable Radiochemical purity for pertechnetate

95% (% tc04 vs free Tc)

Major spill dose I-131

1mCi

Temporary sterility dose men

0.5 Gy

QC frequency: CT dose check

Annually or after replacement/repair

QC frequency: Gamma camera linearity

Weekly

Written directive require for I-131 dose >_

30 mCi

Indium 111 analogue

IRon

Thallium 201 analogue

Copies of written directives

3 years

QC frequency: Gamma camera spatial resolution

Weekly

Dose major spill fopr Ga-67, In 111 and I123

10 mCi

Gallium analogue

Iron

Radiochemical purity Tc99 Sc

92%

Least sensitive cell cycle phase

S phase

Dose in 1st two weeks of gestation may lead to spontaneous abortion

100 mGy

Immediate NRC notification require with single dose greater than _ effective _ eye equiv and _ shallow dose equive

5x annual doses (250, 750 and 2500 mSv)

LD50 for young adult

3-4 Gy

CT A/P dose

25-30 mGy

Aluminum break through limit for Tc99 generator

<10ug/mL

Max Moly-99 per Tc99m mCi

0.15 uCi/ mL Tc99m

QC frequency: Leak test sealed sources

Q 6 months

QC frequency: Well counter constancy

Daily

QC frequency: Well counter Energy resolution FWHM

Quarterly

How long must keep radiation protection progams related records

5 years (all other records 3 years)

QC frequency: Gamma camera sensitivity

Annually

WB dose _Gy for hematopoeitc syndrome in _ weeks

2-5 Gy, 2-3 weeks

Chemical purity of Mo99/Tc99

Paper Colorimetric test (al)

How often radiation survey in radionclide use area

Weekly

Yellow 2 label surface rate _ and 1m rate _

0.5 mSv/ hr and 0.001 mSv/hr

Annual exposure limit for eye

150 mSv

Radiation survey frequency for area perpping a material requiring a written directive

Daily

QC frequency: Well counter efficiency

Annually

Longer collimator septa _ resolution and _ sensitivity

increases, decreases

White label 1 surface dose

0.005 mSv (5uSv)/ hr

Radionuclide purity test

Dose calibrator (moly/Tc)

What is minimum dose for deterministic effects

>2 Gy

Annual public exposure lm,it per NRC

1mSv

RBE Relative biologic effectiveness =

Dose of 250 kV xrays/dose in Gy of test dose

At what LET does RBE maximize

100 keV/micrometer

OER means?

oxygen enhancement ratio

At what (high vs low) LET does OER matter most

lower LET