CBCT

CBCT beam is ... shaped

• fan

• cone

• triangle

Smaller field of view (FOV) leads to ... patient exposure

• increased

• decreased

• the size of FOV doesn't matter

The smallest distinguishable individual volume elements of a 3D image is ...

The ... the voxel size, the ... the image details

• smaller - better

• smaller - worse

• bigger - better

The process the software uses to produce the image is termed ...

• projection

• back projection

• attenuation

Scattered photons in CBCT leads to ...

• higher image contrast

• decreased image contrast

• quantum noise

Partial volume averaging can be resolved by ...

• increasing voxel size

• decreasing voxel size

Undersampling occurs when too few frames are taken and leads to aliasing effect

• True

• False

When lower energy photons are absorbed in preference to higher energy photons, this results in ...

• beam hardening

• partial volume averaging

• cone beam effect

• undersampling

CBCT is the imaging modality of choice for soft tissues

• True

• False