Chapter 27: Three-Dimensional Digital Imaging

30 flashcards created for review on three-dimensional digital imaging techniques in dentistry, covering key concepts, terminology, advantages, and disadvantages.

What does CBCT stand for in dental imaging?

Cone beam computed tomography.

How does the CBCT machine acquire images?

Using a cone-shaped x-ray beam.

What is DICOM data?

The universal format for handling, storing, and transmitting three-dimensional images.

What does FOV stand for in imaging?

Field of view.

What is multiplanar reconstruction (MPR)?

The reconstruction of raw data into images that create three anatomic planes.

Define the axial plane.

A horizontal plane that divides the body into superior and inferior parts.

Define the coronal plane.

A vertical plane that divides the body into anterior and posterior sides.

Define the sagittal plane.

A vertical plane that divides the body into left and right sides.

What is a voxel?

The smallest element of a three-dimensional image.

What is the purpose of three-dimensional digital imaging?

To evaluate the oral-maxillofacial complex.

What does three-dimensional volume rendering create from two-dimensional images?

A three-dimensional shape.

What does the CBCT machine's size compare to?

A panoramic machine.

What position can a patient be in during a CBCT imaging procedure?

Sitting, standing, or supine.

How many planes are DICOM images viewed in?

Three planes: axial, coronal, and sagittal.

What are multiplanar reconstructed images?

Images viewed together from the three planes.

What is one of the common uses of CBCT in dentistry?

Implant placement.

What is a major advantage of three-dimensional digital imaging?

Lower radiation dose.

What is a disadvantage of three-dimensional digital imaging?

Patient movement and artifacts.

What can the viewing software do in CBCT?

Allows practitioners to view axial, coronal, and sagittal images.

What is an endodontic assessment used for?

To evaluate root canal treatments.

What structure's analysis is facilitated by three-dimensional imaging?

Airway and sinus.

What can three-dimensional imaging help evaluate in orthodontics?

Dental and skeletal relationships.

What is a potential limitation related to the cost of equipment?

It may be prohibitively expensive.

What is a key component of data reconstruction during CBCT imaging?

Conversion of raw data into a stack of axial images.

What does the term 'resolution, contrast' refer to?

The number of gray-scale colors available for each pixel.

What separates the midsagittal plane from the sagittal plane?

It runs through the midline of the body.

What technology has improved diagnosis in dental care?

Three-dimensional digital imaging.

What are artifacts in dental imaging?

Distortions produced by patient movement.

How does three-dimensional imaging aid in trauma evaluation?

By providing detailed anatomical visualization.

What must practitioners be trained in for effective image interpretation?

Data on areas outside the maxilla and the mandible.

What is one disadvantage concerning the field of view in CBCT?

Size may be limited.