ARRT registry review covering radiation protection
Help!
|
|
||||
|---|---|---|---|---|---|
| Define wavelength | Distance between two consecutive wave crests
🗑
|
||||
| What action is responsible for the release of an x-ray photon in Bremsstrahlung radiation? | The slowing down or "braking" of the electron
🗑
|
||||
| How much of an x-ray beam is composed of Brems radiation? | 70%-90%
🗑
|
||||
| What is the term for when an outer shell electron moves into an inner shell? | Characteristic radiation
🗑
|
||||
| What is the result when a high energy xray interacts with tissue and eject an outer shell electron? | Compton Scatter
🗑
|
||||
| What type of interaction is responsible for patient dose? | Photoelectric
🗑
|
||||
| In traditional units, how much dose is received from an average chest x-ray? | 10mrem
🗑
|
||||
| What type of effect are usually a result of high dosage in a short period? | Early
🗑
|
||||
| Is embryologic effect early or late? | Late
🗑
|
||||
| According to the Law of Bergonie and Tribondeau, what three types of tissues are most radiosensitive? | Stem, Young, Highly Mitotic
🗑
|
||||
| What theory explains why radiation can cause death in some cells? | Target theory
🗑
|
||||
| What is the most radiosensitive cell? | Lymphocyte
🗑
|
||||
| During which trimester is the fetus most susceptible to radiation? | First
🗑
|
||||
| What term is defined as the average annual gonadal dose to population of childbearing age? | Genetically significant dose
🗑
|
||||
| What is the genetically significant dose estimated to be? | 20mrem
🗑
|
||||
| What type of effects can be caused by a very large single exposure of radiation to the body? | Early somatic
🗑
|
||||
| Name three types of beam restrictors | Aperture diaphragm, cone/cylinder, collimator
🗑
|
||||
| What filtration thickness is required when equipment is operated above 70 kV? | 2.5mm Al equivalent
🗑
|
||||
| What are the two types of AEC's? | Ionization Chambers and Phototimers
🗑
|
||||
| What unit is used to measure ionization in the air? | Roentgen
🗑
|
||||
| What unit describes absorbed dose? | rad
🗑
|
||||
| Where is the ionization chamber type of AEC located? | Between the patient and the IR
🗑
|
||||
| Where is the phototimer type of AEC located? | Beneath the IR
🗑
|
||||
| For dose reduction, what positioning consideration should be made for skull imaging? | Perform the exam PA
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
jaminton
Popular Radiology sets