The "I keep forgetting" compilation

literally just stuff that i keep forgetting - so far: DOT transport indexes, Occupational dose limits,

A package has a surface reading of 2.0mR/hr, and a 1-meter reading of 0.4mR/hr. What is the package’s DOT label?

Yellow II

A package has a surface reading of 0.2 mR/hr and no detectable reading at 1 meter. What is the package’s DOT label?

White 1

A package has a surface reading of 110mR/hr, and a 1-meter reading of 9 mR/hr. What is the package’s DOT label?

Yellow 3

A package has a Yellow 3 DOT label. What is the maximum surface level reading of ___ mR/hr and maximum 1-meter reading of ___mR/hr.

Surface: <200 mR/hr

1meter: <10 mR/hr

A package has a Yellow 2 DOT label. What is the maximum surface level reading of ___ mR/hr and maximum 1-meter reading of ___mR/hr.

Surface: <50 mR/hr

1meter: <1 mR/hr

A package has a White 1 DOT label. What is the maximum surface level reading of ___ mR/hr and maximum 1-meter reading of ___mR/hr.

Surface: <0.5 mR/hr

1meter: <0.1mR/hr

A surface survey of a package is 16 mrem/hr. The one meter survey is 1.7 mrem/hr. Which would be the appropriate DOT Label to use on the box?

Yellow III

The Transport Index (TI) is the exposure rate in mrem/hr:

At one meter from the surface of the package.

What is the annual Whole-body (TEDE) occupational limit?

5 rem

What is the annual occupational limit for the lens of the eye?

15 rem

What is the annual occupational limit for any organ or tissue TEDE?

50 rem

What is the annual occupational limit for extremities/skin?

50 rem

What signage should be posted in an area where a person can expect to receive more than 5 mRem/hr

Caution: Radiation Area

What signage should be posted in an area where a person can expect to receive more than 100 mRem/hr

Caution: High Radiation area

What signage should be posted in an area where a person can expect to receive more than 500 mRem/hr

Grave danger: very high radiation area

What signage should be posted in an area with a dose rate of 50mRem/hr

Caution: Radiation area

What signage should be posted in an area with a dose rate of 10 mRem/hr

Caution: Radiation area

What is the first step when a radioactive spill ocurs?

Notify all persons in the immediate vicinity

What does the NRC consider a medical event?

When an error and excess exposure has occured

Patients who’ve recieved a therputic dose may be released if exposure to the public is less than ___ rem

0.5 rem

A patient is unresponsive. What should you do first?

Call for help

A Mo99/Tc99m generator is a type of ______ equilibrium generator

transient

How do you calculate the expiration time of a Tc-99m ellute?

t = { [-ln (Mo₀ / Tc₀ ) ] / 0.1052} - 18.03

An ellution of Tc-99m at 0700 contained 35 uCi of Mo-99 and 500mCi of Tc99m. At what time will the ellute contain a Mo-99 level exceeding the estalished limits?

7.26hrs

A technologist must administer 8mci Tc-99m Mebrofenin to a patient at 1100. On the basis of this vial label information, what volume of Tc-99m Mebrofenin should be administered to the patient?

Calibration: 0700, August 4

Total activity: 100 mCi

Total volume: 8.5 mL

Concentration: 11.8mCi/mL

Expiration: 1500, August 4th

**Use a hint for how to solve**

1.1 mL

How do you calculate the R_f value?

R_f = distance component travels from origin / distance of solvent front from the origin

A technologist needs 3.5mCi of Tl-201 Thallus Chloride to perform myocardial perfusion imaging on September 6. If the concentration of the radiopharmaceutical is 2 mCi/mL on September 8th, what volume should be administered to the patient?

*use hint to learn how to solve*

1.1mL

Applying zoom during image acquisition will affect what image aspect?

increases resolution

Ramp filters have what effect on images reconstructed with filtered back-projection?

enhance edges and surpress star artifacts

Which of the following statements about the effect of the filter cut-off frequency is true?

The lower the cutoff frequency, the noisier the image.

A parathyroid adenoma will concentrate which of the following radiopharmaceuticals?

[99mTc]sestamibi

Heating is required during the preparation of all of the following 99mTc-labeled radiopharmaceuticals except:

bicisate

What is the chemical name of mertiatide?

Mag3

What is the comercial name for MAG 3?

mertiatide

92. Which of the following is a high-pass filter?

Ramp

What is the effect of changing the order of a Butterworth filter from 3 to 5?

The image will be sharper.

Which of the following statements about low-pass filters are true

low pass filters retain low frequency data and reject high frequency data

Which of the following statements about high-pass filters are true?

high-pass filters retain high frequency data and discard low frequency data

Which of the following statements about lthe use of low-pass filters on image appearance are true?

The image

Temporal resolution is related to which of the following acquisition parameters?

framing rate

If an image is acquired into a 128 × 128 matrix on a scintillation camera with a 350 mm diameter field of view, what are the dimensions of each pixel?

2.73 × 2.73 mm

What is the half life of Mo99

66 hrs

What is the half life of Tl-201 Thalus Chloride?

73.1 hrs

What is the half life of I-123

13.2 hrs

What is the half life of I-131

8 days

What is the half life of Ga-67 Citrate?

78.3 hrs

What is the half life of In-111?

67 hrs (2.8 days)

What is the half life of y-90

64 hrs

What is the half life of Rb-82 Chloride

75 Sec

What is the half life of of F-18

110min

What is the half life of Xe-133

5,2 days

What is the half life of N-13 Ammonia

10 min

What is the half life of Ga-68 Dotatate

68 min

What is the gamma photo peak(s) of Tl-201?

135keV & 167 keV

What is the photo peak(s) of I-123?

159 keV

What are the photo peak(s) of Ga-67 Citrate?

93keV, 185 keV, 300 keV

What are the photo peak(s) of In-111?

173 and 247 keV

What is the brand name for HMPAO?

Ceretec

What is the chemical name for Ceretec

HMPAO

What is the chemical name for Neurolite

bicisate

What is the comercial name for bicisate

Neurolite

ECD

Activated charcoal in a Xenon-gas delivery system captures:

Xenon Gas

Soda Lime in Xenon-gas delivery systems are used to trap exhaled:

Carbon Dioxide

What is the role of stannous ion in the preperation of pharmaceuticals labeled with Tc-99m O4-?

It reduces  Tc^-99mO_4- in RBC, making it unable to diffuse outside of the cell

Pulmonary arteries transport ______ blood

Deoxygenated

Pulmonary veins transport ______ blood

oxygenated blood

Which of the following options best describes the flow of blood from through the cardiopulmonary system

R. Ventricle > Pulmonary arteries > pulmonary veins > L. atrium > L. Ventricle > Aorta