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RADT 318 Unit #1
| Question | Answer |
|---|---|
| The parietal bones are best visualized on what view? | Lateral |
| What are the 5 most common positioning errors? | 1. Rotation 2. Tilt 3. Excessive Flexion 4. Excessive Extension 5. Incorrect CR Angle |
| What is the difference, in degrees, between the infraorbital and orbitomeatal lines? | 7-8 degrees |
| What projection is to be used as an alternative projection for patients who cannot flex the neck sufficiently for the AP Axial Towne? | PA Axial Projection HAAS Method |
| What CR angle should be used for the PA Axial Projection HAAS Method? | 25 degrees cephalad to OML |
| Where should the petrous ridges be located for a PA Caldwell view? | Lower 1/3 of the orbits |
| What bones house the organs of hearing? | Temporal |
| When a patient's head is placed in a true lateral position for imaging, what positioning line must be exactly perpendicular to the plane of the IR? | IPL |
| The ______is the most prominent point of the external occipital protuberance: | inion |
| The positioning line located between the outer canthus and the EAM is the: | Orbitomeatal line (OML) |
| A _____ fracture is a fracture of the floor of the orbit caused by an object striking the eyes straight on. | Blowout |
| Possible radiographic appearance of a fracture on a radiograph would be best described as: | Disruption of bony cortex |
| A ______fracture is a fracture to one side of a structure that is caused by an impact on the opposite side. | Contrecoup |
| What skull bone contains the zygomatic process that articulates with the zygoma to form the zygomatic arch? | Temporal |
| For a PA 0 degree skull, where should the petrous ridges be located? | They should completely fill the orbits |
| A _______ fracture is when a fragment is separated or is depressed into the cranial cavity | Depressed |
| A tripod fracture is a fracture to the: | Orbital process, maxillary process, and the arch |
| The cranium consists of how many bones? | 8 |
| The Calvarium (skullcap) of the skull consists of what bones? | Frontal, Right Parietal, Left Parietal, Occipital |
| The Floor of the skull consists of what bones? | Right Temporal, Left Temporal, Sphenoid, Ethmoid |
| The petrous ridges are part of what bone? | Temporal |
| _____________ is a smooth raised prominence between eyebrows & above bridge of nose. | Glabella |
| __________ is the depression above eyebrow. | Supraorbital Groove |
| _________ is the superior rim of each orbit. | Supraorbital Margin |
| __________ is the opening within SOM that is slightly medial to the midpoint of the orbit. | Supraorbital Notch (Foramen) |
| The Supraorbital Notch (Foramen) allows the passage of what? | Nerves and arteries to pass through |
| The occipital bone is the ____________ portion of the cranium. | Inferoposterior |
| The occipital bone contains a large opening at the base called the _______________. | Foramen Magnum |
| The occipital bone contains 2 lateral condylar portions that articulate with: | C1 or the Atlas vertebrae |
| _____________ is the most prominent point of the external occipital protuberance. | Inion |
| Houses and protects delicate organs of hearing. | Temporal (I hear them signing in the temple) |
| The Temporal Bone consists of what 3 main parts? | 1. Squamous portion (Thin & most vulnerable to fx) 2. Mastoid portion (Air cells) 3. Petrous portion |
| _____________ is where the olfactory nerves pass (smell). | Cribriform plate |
| The _____________ suture separates the frontal bone from the two parietal bones. | Coronal suture |
| The _____________ suture separates the two parietal bones. | Sagittal suture |
| The _____________ suture separates the two parietal bones from the occipital bone. | Lambdoidal suture |
| The _____________ suture separates the parietal bones from the temporal bones. | Squamousal suture |
| At is pertains to the 3 skull classifications, __________ pertains to the average head. | Mesocephalic |
| At is pertains to the 3 skull classifications, __________ pertains to a more short, broad head. | Brachycephalic |
| At is pertains to the 3 skull classifications, __________ pertains to a longer and more narrow head where the width is less than 75% of the length. | Dolichocephalic |
| GML stands for: | Glabellomeatal Line |
| OML stands for: | Orbitomeatal line |
| IOML stands for: | Infraorbitalmeatal line |
| AML stands for: | Acanthiomeatal line |
| LML stands for: | Lips-meatal line |
| MML stands for: | Mentomeatal line |
| What is the phrase I taught you to remember all of the positoning lines for the skull? | Go (GML) Out (OML) In (IOML) A (AML) Limo (LML) Man (MML) |
| Where should the CR be for the Towne method? | 2 ½ inches above the glabella |
| ____________ is evident on skull radiographs by superior and inferior separation of symmetric horizontal structures | Tilt |
| Where should the CR be for a lateral skull? | 2 inches superior to EAM |
| Where should the CR be for the PA Cranium "Caldwell Method." | Exit at the nasion |
| What angle should the CR be for the PA Cranium "Caldwell Method with the OML perpendicular to the IR? | CR 15° caudad |
| For the PA 0° Cranium where should the CR be? | CR exits Glabella |
| For the PA 0° Cranium where should the CR be in relation to the OML? | Parallel |
| For the PA 0° Cranium where should the OML be in relation to the IR? | OML perpendicular to IR |
| For the AP Trauma 0° Cranium with the patient in a c-collar who is unable to get the OML perpendicular to the IR, what should you do? | CR parallel to OML and to the Glabella |
| How can you tell if an image is AP or PA? | The magnification of the orbits |
| For the SMV Cranium, the __________ should be parallel to the IR. | IOML |
| For the SMV Cranium, the CR should be ____________ to the IOML and IR. | Perpendicular |
| For the SMV Cranium, the CR should be where? | 1½ inch inferior to the mandibular symphysis |
| The SMV view is the best view to visualize what? | When looking for a fracture of the base of the skull. |
| Radiographically, the ___________ view is similar to the AP Axial Towne’s except the dorsum sallae appears larger within the foramen magnum. | Haas method |
| How many pairs of nasal conchae are there and what are they? | There are 3 1. Superior 2. Middle 3. Inferior |
| What is the purpose of Nasal Conchae? | To protect the nasal cavity, to divide the nasal cavities into various compartments, and to break up or mix the flow of air from the nose to the lungs. It also makes sure the air is warm and clean when you breath in. |
| The Nasal Septum consists of what two bones? | Ethmoid and the Vomer |
Created by:
rdwilliams
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