CBCT ACDS

Which of the following is the correct sequence of image formation in CBCT?

• Acquisition - reconstruction - image diaplay

• Reconstruction - Image diaplay- Acquisition

• Image display - Aquisition - Reconstruction

• None of the above

In which year CBCT was introduced in Dentistry

• 2000

• 1997

• 2009

• 1994

Which of the following FOV is preferred in endodontics

• Large

• Medium

• Small

• None

Maximum radiation exposure occurs in

• CBCT

• RVG

• CT

• IOPA

Which of the following are indications for CBCT

• Root fractures

• Resorption

• Complex anatomy

• All of the above

Large voxel size in CBCT results in

• Increased sharpness

• Decreased sharpness

• Increased noise

• Decreased noise

CT image recorded and displayed as a matrix of individual blocks are called as

• Voxel

• Pixel

• Boxes

• Mesh

All of the following statements about CBCT are correct except

• More noise

• Good soft tissue contrast

• Cone beam effect

• High radiation exposure

What are dimensions of FOV for single jaw/dual TMJ

• 3cm x 3 cm

• 4-6 cm x 10-14 cm

• 8 cm x 8 cm

• 15 cm x 15 cm

Which of the following parameters can be operator controlled

• Focal spot size

• Beam frequency

• Source object distance

• Exposure time