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208
Radiation Safety & Axial Skeletal
| Question | Answer |
|---|---|
| The most common grid for portable and mobile x-rays are? | 5:1,6:1 and 8:1 page138 Long |
| The part on the x-ray tube that allows you to change the size of the radiation field is? | Collimator |
| This suture divides the skull from side to side and separates the parietal bones. | Sagittal Suture |
| What x-ray view of the skull do you see the sella turcica? | Lateral view of the skull |
| If the centering is positioned on the midclavicular line at approimate level of tip xipoid process, what are you positioning? | Lower posterior Ribs |
| The central ray is perpendicular to the center of the film, through the midpoint of the sternum for, what are you positioning? | Lateral Sternum |
| This is the passageway for the spinal columun. | Foramen magnum |
| Shallow breathing should be used for what exam? | Sternum. |
| On this view the central ray enters 2 inches above the EAM | Lateral view of the skull. |
| On this view the central ray is angled 15 degrees caudad and exits through the nasion. | PA Axial Caldwell. |
| This is the distance between the patient and the IR. | OID Object Image Distance |
| All skull views including the Submentovertex SMV use what size films. | 10 x 12 size film |
| When x-rays are absorbed, their energy is? | Attenuated. |
| The principal source of scatter radiation is the? | Patient. |
| What is the radiation called that happens as result of the interaction within the patient. | Scatter radiation. |
| This grid ratio is used for head units and chest radiographs. | A 12:1 Grid |
| This absorts scatter radiation and allows remnant radiation to pass through to the IR. | Lead Strips in the grid. |
| The SI unit for equivalent dose measurement is? | Sievert |
| There are how many pairs of true ribs? | Seven |
| There are how many pair of false ribs? | Five |
| Which facial view best demonstrates the frontal and ethmoid sinuses? | Caldwell |
| The antra of Highmore is also called? | Maxillary sinuses |
| On this view the central ray is aligned to the midpoint of the nasal bone. | Nasal Bones. |
| The superior portion of the sternum is? | Manubrium |
| The mid portion of the sternum is? | The Body |
| The inferior portion of the sternum is? | Xiphoid process |
| Attenuation is? | The process of absorbng x-ray beams. |
| Which sinuses are situated between the orbits and anterior to the sphenoid sinuses? | Ethmoidal sinuses. |
| The FFD is the same as the? | Source to Image Distance, FFD means Focal Film Distance |
| This view the central ray enters perpendicular to IOML through the midline and passing 3/4" anterior to the level of the EAM. | Cranial Base view also known as the SMV, Submentovertex. |
| Using the shorest exposure time as possible on a chest radiograph will? | Improve detail and lower motion artifact. |
| When x-raying the mandible the mouth should be? | Closed |
| In conventional system 1 rad is equal to ________ in conventional. | one rem or one R |
| The cheek bones are also know as? | The zygomas |
| Remnant radiation can be described as the radiation that? | Has passed through the patient and reaches the IR. |
| Fog is produce by? | Scatter radiation |
| The protuberance in the center of the lower margin of the mandible is? | The mental protuberance |
| The protuberance inbetween the eyebrows it the? | Glabella |
| The central ray is angled 25 degrees cephald to the center of the film 1 1/2" below the externalocciptal protuberance on what view? | The PA Axial HAAS view, reverse of the Towne view. |
| The Upper PA and Oblique Ribs can be used to see? | Ribs 1-10 anteriorly |
| When kvp is decreased fog is? | Fog is decreased |
| When kVp is increased fog is? | Fog is increased |
| The highest ESE (Entrance Skin Exposure) is? | Abdomen |
| When the mentomeatal line is perpendicular to the flim and infraorbital line forms a 37 degree angle to the film which exam is this? | Waters view of the skull |
| RAD x Wr = | rem Radiation absorbed dose x weight factor = radiation equivalent man. |
| Pa Oblique of upper anterior ribs, the upper margin of the film is? | 1.5 - 2 inches above the spinous process of C7. |
| The portion of the x-ray room that is protects the technologist from scatter radiation is the? | Control Booth |
| The acanthion is the? | Junction of the nose and the upper lip. |
| Computed radiography (CR) eliminates the need for ? | Darkrooms |
| When x-rays are absorbed their energy is ? | Attenuated and Scattered |
| The image receptor (IR) can consists of ? | Cassette and film, or cassette and phosphor plate, or digital capture devices in the table. |
| Maximum Permissible Dose (MPD)means? what is the amount for the technologist per year? | It is the limit that the worker can receive in a year 5 rem. |
| Photoelectric Effect is? | The difference in binding energy from an internal electron that has been dislodged and replaced by an external electron. |
| The upright sternum can be taken at two distances, what are they? | SID of 40" or 72" |
| The greatest cause of unnecessary radiation exposure is? | Repeat exposure. |
| This is where the rib connects to the thoracic vertebrae. | Costovertebral articulations. |
| What twohave the highest GF/QF value? | Fast neutrons and Alpha |
| This is taken when fog reduces the visiblity of the details. | Spot films. |
| Nasal bones articulate posteriorly with the? | Ethmoid. |
| The sutures between the parietal and the temporal bones are called? | Squamosal Suture |
| Most grids have a image distance of? | 40 and 72" SID |
| What is Thompson effect? | When an incoming x-ray excites an atom and the atom produces a new x-ray photon. |
| The central ray is described as the? | The line in the center of the x-ray beam that is perpendicular to the long axis of the x-ray tube. |
| The latent image is? | When the image has been exposed, but not processed yet. It is on the film or the CR plate. |
| Pneumoconiosis is? | Inflmmatory occupation lung disease caused by inhaling irritating dust. |
| Grid lines or grid cutoff is? | Excessive absorption of useful radiation caused by improper grid alignment. |
| PA mandible uses what type of screens? | Routine Screens |
| The size of the film for flouroscopy studies is? | 24 x 24 cm |
| Computed radiography uses what instead of film? | Phosphor material or phosphor plate. |
| FSD means | Focal Spot Distance |
| The superior and middle nasal conchae are projections of what bone? | Ethmoid |
Created by:
MAUNEY
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