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RADT318 Unit #3
| Question | Answer |
|---|---|
| Air fluid levels should be radiographed in the _______ position if possible when imaging for sinuses. | erect |
| Large air-filled cavities of the paranasal sinuses are sometimes called ____________________. | accessory nasal sinuses |
| Paranasal sinuses are lined with a ______________ which is continuous throughout the nasal cavity. | mucous membrane |
| The Paranasal Sinuses are divided into ______ groups of paranasal sinuses according to the bones that contain them. What are they? | 4 Maxillary (2) Frontal (2) Ethmoid (many) Sphenoid (1 or 2) |
| Only the _________ sinuses are part of the facial bone structure. The rest are from cranium bone structures. | maxillary |
| What is the purpose of paranasal sinuses? | 1. Vocal resonance (loudness and efficiency) 2. Lighten weight of the skull 3. Produce mucus to moisten nasal passageways |
| The development of paranasal sinuses first begins _______. | in fetus |
| The Frontal and Sphenoid sinuses are developed at what age(s). | age 6-7 |
| What sinuses are developed last? | Ethmoid sinuses |
| All paranasal sinuses are fully developed by what age? | a person’s late teenage years. |
| What is another name for maxillary sinuses? | Antrum |
| The _________ sinuses are the only sinuses that are part of facial bone structure. | maxillary |
| T/F: Maxillary sinuses vary in size | True |
| These sinuses are also where the site of communication with the nasal cavity is. | maxillary |
| These sinuses have a pyramid shape on the frontal view, and look like a cube laterally. | maxillary |
| These sinuses are located between the inner & outer cortex of skull & posterior to Glabella. | Frontal Sinuses |
| These sinuses are located the most superiorly. There are usually 2 of these sinuses that are divided by a septum. However, if the septum is absent, there will only be 1. | Frontal Sinuses |
| These sinuses are rarely aerated before the age of 6 and are also rarely symmetric. Another interesting thing to note is that they are usually larger in men. | Frontal Sinuses |
| These sinuses have air cells that are grouped into collections such as anterior, middle and posterior. | Ethmoid Sinuses |
| These sinuses are located directly below the sella turcica. There are usually 2 of these sinuses that are divided by a septum. However, if the septum is absent, there will only be 1. | Sphenoid Sinuses |
| The _________________________ acts to form drainage pathways of the frontal, maxillary, and ethmoid sinuses. | Osteomeatal Complex or Unit |
| Sinus infection is termed _____________. | Sinusitis |
| For the Lateral Sinus, what side of the patient is closest to the IR? | Side of interest closest to IR |
| For the Lateral Sinus, the MSP is ___________ to the IR. | parallel |
| For the Lateral Sinus, the ___________ is perpendicular to the IR. | IPL |
| For the Lateral Sinus, the CR is centered: | midway between outer canthus and EAM |
| What view of the sinuses demonstrates all 4 sinuses? | Lateral Sinuses |
| For PA Caldwell Sinuses, we need to elevate the ________ 15° from horizontal. | OML |
| For PA Caldwell Sinuses, the CR should: | CR to exit Nasion |
| For PA Caldwell Sinuses, the petrous ridges should be where? | Lower 1/3 of the orbits |
| For Parietoacanthial (Waters), the _________ should be perpendicular to the IR. | MML |
| For Parietoacanthial (Waters), the OML forms a _________° angle to the IR. | 37° |
| For Parietoacanthial (Waters), the CR should: | CR to exit Acanthion |
| For Parietoacanthial (Waters), the petrous ridges should be where? | Petrous ridges below maxillary sinuses |
| For PA Transoral “Open Mouth Waters,” the _____ should be perpendicular to the IR. | MML |
| For PA Transoral “Open Mouth Waters,” the OML forms a _________° angle to the IR. | 37° |
| For PA Transoral “Open Mouth Waters,” the CR should: | CR to exit Acanthion |
| The _________________ view is an alternative view for patients who can not do the SMV position. | PA Transoral “Open Mouth Waters” |
| The _________________ view allows for the visualization of the Sphenoid sinus through the patient’s mouth. | PA Transoral “Open Mouth Waters” |
| For PA Transoral “Open Mouth Waters,” the petrous ridges should be where? | Petrous ridges below maxillary sinuses |
| For SMV Sinuses, the __________ should be parallel to the IR. | IOML |
| For SMV Sinuses, the CR should be: | CR 1.5-2” below mandibular symphysis |
| Orbits contain vital organs for: | Sight, nerves and blood vessels |
| _____________ is the area of the orbit that corresponds to the outer circular portion of the bone. | Base |
| _____________ is the posterior portion of the cone that corresponds to the optic foramen, through which the optic nerve passes. | Apex |
| With the head upright, and the OML parallel to the floor, each orbit will: | Project superiorly 30 degrees and project toward the MSP 37 degrees |
| Each orbit contains 3 holes or openings in the posterior position to provide a passageway for certain: | cranial nerves |
| Cranial Nerve 2 is important for: | eye sight |
| Cranial Nerves 3, 4, 5, and 6 control: | movement of the eye and the eyelid |
| Cranial Nerve 5 permits entry of sensory stimulation of the: | cheek, nose, upper lip, and teeth |
| The Sphenoid Strut helps form the: | optic canal |
| The Sphenoid Strut helps protect the: | optic nerve |
| For the Parieto-Orbital Oblique (Rheese) method, the ______ should be perpendicular to the IR. | AML |
| For the Parieto-Orbital Oblique (Rheese) method, you should rotate the patient's head ______° towards IR. | 37° |
| For the Parieto-Orbital Oblique (Rheese) method, the affected side should be ___________ (up/down). | affected side down |
| The Parieto-Orbital Oblique (Rheese) is a good view for demonstrating at the: | optical foramen |
| For the Parietoacantial Orbits (Waters), the _______ should be perpendicular to the IR. | MML |
| For the Parietoacantial Orbits (Waters), the CR should CR exit: | at the level of the acanthion |
| For the Parietoacantial Orbits (Waters), the petrous ridges should be demonstrated: | below the level of the maxillary sinuses |
| The Parietoacantial Orbits (Waters), is a good view for demonstrating: | Tripod Fxs, Le Fort Fxs, neoplastic or inflammatory processes, foreign bodies in the eye |
| For the Modified Parietoacanthial (Modified Waters), the _____ should be perpendicular to the IR. | LML |
| For the Modified Parietoacanthial (Modified Waters), the CR should CR exit: | at the level of the acanthion |
| For the Modified Parietoacanthial (Modified Waters), the petrous ridges should be demonstrated: | within the lower 1/3rd of the maxillary sinuses |
| The Modified Parietoacanthial (Modified Waters), is a good view for demonstrating: | Orbital Fxs (blowout), neoplastic and inflammatory processes, foreign bodies in the eye |
| For the Lateral Orbits, the ______ should be parallel to the IR. | MSP |
| For the Lateral Orbits, the ________ should be perpendicular to the IR. | IPL |
| For the Lateral Orbits, the side of interest should be _________ (closest/furthest) from the IR. | closest |
| For the Lateral Orbits, the CR enters where? | midway between outer canthus and EAM (zygoma) |
| The Lateral Orbits is a good view for demonstrating: | Fractures, neoplastic or inflammatory processes of orbits |
Created by:
rdwilliams
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