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During conventional Tomography, structures lying outside the object plane are blurred because of what?
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Conventional tomography employs what principle?
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Tomography 1
Physics of Image Production
| Question | Answer |
|---|---|
| During conventional Tomography, structures lying outside the object plane are blurred because of what? | Motion blur |
| Conventional tomography employs what principle? | Motion blur |
| What is the MAJOR advantage of conventional tomography? | Contrast resolution |
| Conventional tomography has also been called what? | Laminography,Planigraphy,Stratigraphy |
| What will the IR do during conventional tomography? | Move opposite the x-ray tube in a seesaw motion |
| What determines the thickness of tissue imaged during linear tomography? | Tomographic angle |
| What is the thickness of tissue imaged during conventional tomography called? | The tomographic layer |
| What would the tomographic angle be for Zonographic Tomography? | Less than 10 degrees |
| When the tomographic angle is 0 degrees, the tomographic layer will be _________. | Infinite |
| During conventional tomography, the fulcrum is in the ____ _____. | Focal Plane |
| The tomographic angle is the angle of x-ray tube movement during what? | x-ray exposure |
| The MAJOR disadvantage of conventional tomography is ________ ________ _______. | Increased patient dose |
| Name the five types of multidirectional tomographic modes. | Circular, Elliptical, Figure 8, Hypocycloidal and spiral(trispiral) |
| What is the relationship between tomographic angle and section thickness | Large angle=Small Thickness; Small Angle=Large thickness |
| When the Grossman principle is used to alter the focal plane level, ________ remains stationary and ________ is raised or lowered | Fulcrum, Table |
| When the planigraphic principle is used to alter the focal plane, the fulcrum system is ________. The _________ is raised or lowered while the ________ remains stationary. | Adjustable, Fulcrum, Stationary |
| What are the essential ingredients for Linear Tomography? | x-ray tube, movable bucky and rigid connecting rod which rotates about a fixed fulcrum |
| _______ is a special x-ray technique that ______out the _______ of superimposed structures to show clearly the principle structures being examined | Tomography. blurs. shadows. |
| Tomography is also referred to as __________ ________ _____________. | body section radiography |
| The plane of maximum focus in tomography is referred to as what? | Object/Focal plane |
| How would you locate the tomographic scout level when performing an examination of the kidneys? | measure patient, divide by 2 and subtract two. |
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aldo.banos
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