X-ray tube components and tube failure/ tube charts
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
---|---|---|---|---|---|
Explain the protective housing of the X-ray tube | show 🗑
|
||||
show | protects against electrical shock.
Provides mechanical support
Contains oil that serves as an electrical insulator and thermal cushion
🗑
|
||||
Metal/Glass Envelope has two diodes, name them.. | show 🗑
|
||||
show | to maintain a vacuum. The production of xrays would be less efficient without it because the electrons would interact with the particles in the air.
🗑
|
||||
show | filled with air molecules because the tube vacuum has deteriorated
🗑
|
||||
Internal structure of the X-ray tube | show 🗑
|
||||
show | coil of wire approx. 2 mm in diameter. 1-2 cm long
🗑
|
||||
show | metal cup that the filament is embedded in.
🗑
|
||||
show | when tube is on a low current passes through filament, preparing it for an exposure.
🗑
|
||||
show | cloud of electrons around the filament that becomes so large that it makes it difficult for additional electrons to be boiled off.
🗑
|
||||
show | come with two focal spots: small and large
🗑
|
||||
Benefits of small focal spot | show 🗑
|
||||
show | used with technical factors that require a lot more xray photons. Less detail, less patient dose.
🗑
|
||||
show | positive side of the X-ray tubes
🗑
|
||||
show | rotating and stationary
🗑
|
||||
rotating anode | show 🗑
|
||||
Stationary anode | show 🗑
|
||||
Functions of the anode | show 🗑
|
||||
Anode materials | show 🗑
|
||||
show | tungsten
(molybdenum or rhodium for mammography)
🗑
|
||||
Target material characteristics | show 🗑
|
||||
show | the effective focal spot size is smaller than the actual focal spot
🗑
|
||||
actual focal spot | show 🗑
|
||||
show | the focal spot that is projected down towards the patient. the actual source of radiation
🗑
|
||||
show | xray intensity on the cathode side is higher than the intensity on the anode side.
🗑
|
||||
show | electrons bounce off of the focal tract and enter and interact with an area outside the focal tract to produce xrays
🗑
|
||||
show | radiation, conduction, convection
🗑
|
||||
Causes of tube failure | show 🗑
|
||||
show | temp of the anode is excessive due to exposure exceeding the tube rating chart. Excessive heat can produce many small pitts or melts on the surfaace of the focal tract
🗑
|
||||
Long exposure timers | show 🗑
|
||||
show | causes tungsten to vaporize and deposit itself on the inside of the envelope.
🗑
|
||||
show | single, large exposure to a cold anode causes it to rapidly heat and crack
🗑
|
||||
Gassy tube | show 🗑
|
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:
671470335
Popular Radiology sets