RAD Chapter 27

(1) Three-dimensional imaging provides a more accurate image than traditional two-dimensional imaging. (2) Locations, distances, sizes, and shapes of pathology and anatomic landmarks, including eruption patterns, are more accurately represented with three-dimensional imaging.

• Both statements are true.

• Both statements are false.

Three-dimensional imaging is encoded for handling, storage, and transmission by which of the following?

• Cone-beam computed tomography (CBCT)

• Digital Imaging and Communications in Medicine (DICOM)

The reconstruction of raw data into images when imported into viewing software to create three anatomic planes of the body is called

• multiplanar reconstruction.

• axial plane.

The number of gray scales available to be chosen for each pixel in the image is called

• spatial resolution.

• contrast resolution.

(1) Until recently, three-dimensional imaging has been used primarily for medical image purposes. (2) Cone-beam computed tomography (CBCT) was developed for use in dentistry to evaluate the oral and maxillofacial areas of the head and neck.

• Both statements are true.

• Both statements are false.

(1) Cone-beam computed tomography (CBCT) utilizes a vertical, narrow x-ray beam, similar to panoramic imaging, to acquire three-dimensional information. (2) The source of radiation in the CBCT machines rotates around the head of the patient.

• The first statement is true; the second statement is false.

• The first statement is false; the second statement is true.

With CBCT, the divergent rays exit the machine and some of the radiation is attenuated by the patient. In this statement, attenuated means

• to dilute.

• to amplify.

The acronym, DICOM, stands for

• Digital Imaging and Communication in Medicine.

• Direct Imaging and Cone-beam Modality.

The information the receptor receives following exposure to the x-ray beam is called

• raw data.

• DICOM data.

When viewed together, the axial, coronal, and sagittal images are referred to as

• three-dimensional digital imaging.

• multiplanar reconstructed images (MPR).