What Generation Am I?

Translate-Rotate Motion

Your answer:
First Generation Scanners Only
First and Second Generation Scanners
Fourth Generation Scanners
Third Generation Scanners

Hundreds of Image projections are aquired during each rotation resulting in better contrast resoultion and Spatial Resolution.

Your answer:
Second Generation Scanners
First Generation Scanners
Third Generation Scanners
Fourth Generation Scanners

Uses a Fan-Shaped x-ray beam.

Your answer:
Fourth Generation Scanners
Second Generation Scanners
All Scanners EXCEPT First Generation scanners
Third Generation Scanners

Multiple Radiation Detectors--A Detector Array.

Your answer:
First Generation Scanners
Second Generation Scanners
Fourth Generation Scanners
Third Generation Scanners

Patient Dose may be somewhat higher with these scanners because of interspaces between detectors.

Your answer:
First Generation Scanners
Second Generation Scanners
Third Generation Scanners
Fourth Generation Scanners

Single Radiation Detector.

Your answer:
First Generation Scanners
Third Generation Scanners
Second Generation Scanners
Fourth Generation Scanners

As Many as several hundred Radiation detectors are incorporated into the Curvilinear detector array.

Your answer:
Fourth Generation Scanners
Second Generation Scanners
First Generation Scanners
Third Generation Scanners

First Scanner to become a head AND body imager.

Your answer:
Second Generation Scanners
Third Generation Scanners
First Generation Scanners
Fourth Generation Scanners

As the Fan Beam passes across each detector an image projection is aquired.

Your answer:
Second Generation Scanners
Fourth Generation Scanners
First Generation Scanners
Third Generation Scanners

A Finely collimated x-ray beam(Pencil Beam)was used in these CT imagers.

Your answer:
Second Generation Scanners
First Generation Scanners
Third Generation Scanners
Fourth Generation Scanners

Ring Artifacts are Characteristic of this scanner.

Your answer:
Third Generation Scanners
Second Generation Scanners
Fourth Generation Scanners
First Generation Scanners

Multiple Image projections per translation.

Your answer:
Fourth Generation Scanners
First Generation Scanners
Second Generation Scanners
Third Generation Scanners

Detector array can contain several thousand individual detectors.

Your answer:
Second Generation Scanners
First Generation Scanners
Third Generation Scanners
Fourth Generation Scanners

Various ARC scans are available --Half scan--Full Scan--Over Scan.

Your answer:
Third Generation Scanners
First Generation Scanners
Second Generation Scanners
Fourth Generation Scanners

Five Minute Imaging Time.

Your answer:
First Generation Scanners
Third Generation Scanners
Fourth Generation Scanners
Second Generation Scanners

Various ARC Scans are possible in order to improve motion blur -- Half Scan or Full Scan

Your answer:
Second Generation Scanners
First Generation Scanners
Fourth Generation Scanners
Third Generation Scanners

Usuall 18 Translations with 10 degree rotation between translations.

Your answer:
Third Generation Scanners
Fourth Generation Scanners
First Generation Scanners
Second Generation Scanners

Imaging time is reduced to 1 second or less.

Your answer:
Third AND Fourth Generation Scanners
Fourth Generation Scanners only
Second Generation Scanners
First Generation Scanners

Developed principally to suppress RING artifacts.

Your answer:
Fourth Generation Scanners
First Generation Scanners
Second Generation Scanners
Third Generation Scanners

When there is a interspace between detectors some X-radiation falls on the interspace resulting in wasted dose.

Your answer:
Second Generation Scanners
Fourth Generation Scanners
First Generation Scanners
Third Generation Scanners

Head imager only not capable of body imaging.

Your answer:
First Generation Scanners
Fourth Generation Scanners
Third Generation Scanners
Second Generation Scanners

There is a modest sacrifice in geometry. However the unattenuated leading edge and unattenusted trailing edge of the fan beam allows for individual detector calibration during each scan.

Your answer:
Second Generation Scanners
Third Generation Scanners
Fourth Generation Scanners
First Generation Scanners

Approximatly 30 second imaging time.

Your answer:
Second Generation Scanners
Third Generation Scanners
Fourth Generation Scanners
First Generation Scanners

The mechanical motion is rotation of the x-ray around a fixed detector array (rotate-stationary).

Your answer:
Fourth Generation Scanners
Third Generation Scanners
First Generation Scanners
Second Generation Scanners

The Curvilinear detector array provides a constant distance between source and each detector resulting in good image reconstruction.

Your answer:
Fourth Generation Scanners
Second Generation Scanners
Third Generation Scanners
First Generation Scanners

180 translations with a 1 degree rotation between translations.

Your answer:
First Generation Scanners
Second Generation Scanners
Fourth Generation Scanners
Third Generation Scanners

This developement is based on 360 degree (rotate-rotate) motion. Both the x-ray source and the detector array rotate around the same axis.

Your answer:
Second Generation Scanners
Third Generation Scanners
Fourth Generation Scanners
First Generation Scanners

Additional Scanners not given a generation designator are?

Your answer:
Multi-Combination scanner
Spiral Scanner
Electron Beam CT and Spiral Scanners
Electron Beam CT (EBCT)

Electron Beam CT is principally applied to what type of imaging?

Your answer:
Heart
Kidney
Liver
Brain

The Development of __________ __________ was the technology breakthrough that made Spiral CT possible.

Your answer:
Multi-detector Arrays
Electron Beams
Slip Rings
Rotation Beams