Exam 12: Multislice Spiralhelical Computed Tomography: Physical Principles and Instrumentation

Which of the following is a popular tilted plane reconstruction?

An algorithm common in multislice computed tomography scanners is the Feldkamp-Davis-Kress algorithm.

The overall goal of multislice computed tomography is to:

The radiation sensors convert ___________ to ___________.

All of the following are housed in the multislice computed tomography gantry except:

In multislice computed tomography, the slice thickness is determined by the: I. beam width in the z-axis II. pitch III. shape and width of the reconstruction filter

Pitch directly relates to: I. patient comfort II. patient dose III. volume scanned

When the slice thickness is equal to the pixel size, the data acquired are said to be:

The photodiodes convert _________ into ________.

The computer systems of multislice computed tomography scanners have hardware that provides all of the following except:

To prevent anode movement under the stress of subsecond acceleration, new x-ray tubes have the anode mounted on a shaft that extends along the tube.

If the x-ray prepatient collimation width is 24 cm and the scanner has a four-row detector array, what is the detector row collimation?

All of the following are advantages of multislice computed tomography except:

The computed tomography detector consists of: I. radiation sensors II. suitable electronics III. slip rings

What term is used to describe the separating of the direct and complementary data trails and also results in efficient z-sampling?

Which of the following describes when raw data for image reconstruction can be selected on the basis of the patient's electrocardiogram?

Which of the following are algorithms that were developed to reconstruct from variable slice thicknesses? I. longitudinal interpolation by z-filtering II. spiral/helical scanning by interlaced scanning III. spiral/helical scanning by optimized sampling

A pitch greater than 1 will result in an increased dose.

What type of detector is used in multislice computed tomography scanners?

What term is used to describe the number of data collection channels and the effective section thickness determined by the data acquisition system settings?