Chapter 27: Three-Dimensional Digital Imaging Flashcards
Types, Principles, Equipment and Guidelines Three-Dimensional Imaging
Define the term: posterior
towards the back
List the disadvantages of three-dimensional digital imaging.
- capturing patient movement or artifacts
- small field of view size
- equipment cost
- common lack of training
Define the term: extraoral imaging
an inspection of large areas of the skull or jaws that requires the use of extraoral imaging receptors
Define the term: trauma
injury produced by an external force
Define the term: mandible
the lower jaw
Define the term: multiplanar reconstruction (MPR)
the reconstruction of raw data into images when imported into viewing software to create three anatomic planes of the body
Define the term: coronal plane
- a vertical plane that divides the body into anterior and posterior sides
- runs perpendicular to the ground
Define the term: horizontal
a side-to-side plane
Define the term: cone beam computed tomography (CBCT)
computer-assisted digital imaging in dentistry that uses a cone-shaped x-ray beam to acquire information and present it in three dimensions
Define the term: extraoral
outside the mouth
Define the term: extraoral image
- an image that results when an image receptor is placed outside the mouth and is exposed to x-rays
- used to examine large areas of the skull or jaws
List the advantages of three-dimensional digital imaging.
- lower radiation dose in comparison to medical CT scans
- brief scanning time
- anatomically accurate images
- easily saved and transported to other medical professionals
Define the term: vertical
an up-and-down plane
Define the term: extraoral receptor
an image receptor is placed outside the mouth to examine large areas of the skull or jaws
Define the term: temporomandibular joint (TMJ)
the jaw joint, including the temporal bone, the mandible, and the articular disc between the two bones
Define the term: three-dimensional volume rendering
a three-dimensional shape that is created from two-dimensional images
Define the term: Digital Imaging and Communications in Medicine (DICOM) data
the universal format for handling, storing, and transmitting three-dimensional images
Define the term: sagittal plane
- a vertical plane that divides the body into right and left sides (the sides do not need to be equally divided)
- runs perpendicular to the ground
Define the term: field of view (FOV)
- the area that can be captured when performing imaging procedures
- with cone beam computed tomography (CBCT) imaging, the region of interest of the patient anatomy
Define the term: contrast resolution
the number of gray-scale colors available to be chosen for each pixel in the image
Define the term: maxilla
the upper jaw
Define the term: anterior
towards the front
Define the term: tomogram
an extraoral image used to examine the bony components of the temporomandibular joint (TMJ)
Define the term: three-dimensional digital imaging
an image that demonstrates structures in three dimensions
Define the term: inferior
describes an area that is lower on a vertical axis
Define the term: temporomandibular joint tomography
an extraoral imaging technique used to examine the temporomandibular joint (TMJ)
Define the term: raw data
in three-dimensional imaging, the information that the image receptor receives as some x-radiation passes through the patient during exposure to the image receptor
Define the term: axial plane
- a horizontal plane that divides the body into superior and inferior parts
- runs parallel to the ground
Define the term: voxel / volume element / three-dimensional pixel
the smallest element of a three-dimensional image
Define the term: cone beam volume tomography (CBVT) / cone beam volume imagining (CBVI)
the term used for computer-assisted digital imaging in dentistry to differentiate the dental imaging procedure from medical computer tomography (CT)
