Exam 15: Virtual Reality Imaging

In the semiautomatic mode of __________ the user selects objects to include the data set through the use of windowing.

Which of the following is a volumetric imaging technique that displays bone, soft tissue, and vessels at the same time?

The next step after data acquisition that is intended to optimize the images before they are subject to further processing and analysis is:

One advantage of virtual endoscopy is that it can reduce complications that might arise from conventional endoscopy.

Proper patient preparation is not important for the success of virtual colonoscopy.

Which of the following is a technique whereby three-dimensional surfaces are extracted from a volume or whereby voxels are extracted from a volume into another three-dimensional segmented region?

Which imaging technique uses virtual reality concepts in the creation of inner views of tubular structures?

Studies have shown that virtual endoscopies would be more expensive than real endoscopies.

Technical applications created from multislice computed tomography scanners include all of the following except:

Volume rendering provides the best results because it: I. adds lifelike reality to the images II. minimizes partial volume-averaging artifacts III. produces optimum visualization of the anatomy

The following factors must be considered before the use of virtual endoscopy becomes commonplace except:

Most experts agree that surface rendering is not best suited for use in computed tomography virtual reality imaging.

Preprocessing involves the use of all of the following except:

The Navigator visualization software allows for all of the following except:

What technique is used to virtually unroll, slice open, and display a three-dimensional model of the colon?

Virtual endoscopy includes all of the following applications except:

Computed tomographic colonoscopy is an integral tool for the examination of colorectal polyp detection.

Virtual reality is a branch of computer science that immerses users in a computer-generated environment and allows them to interact with three-dimensional scenes.

The fourth dimension involved in four-dimensional angiography is ____________.

What is the first step in virtual endoscopy imaging?