M5 - Patient as a Beam Emitter

Attenuation

__________ is the reduction in the total number of x- ray photons remaining in the beam after passing through a given thickness of material.

greater

As an x-ray beam passes through a patient, the beam is attenuated. The thicker the body part being radiographed, the _______ the attenuation.

Density

_________ is the quantity of matter per unit of volume measured in kilograms per cubic meter.

patient

The _______ is the greatest variable the radiographer faces when performing a radiographic procedure.

20

Calcium found in concentrated amounts in bones and teeth, has an atomic number of ___.

radiographic appearance

The composition of the human body determines its __________.

7.78

Air has an effective atomic number of _____ which is greater than either fat or muscle.

Fat

_____ is similar to muscle in that they are both among the soft tissue structures in the body.

skeletal anatomy

The ________ is easily seen radiographically because of the calcium content of bone.

Bone

______ also has the greatest tissue density and as a result, absorbs radiation at a greater rate than any of the soft tissues or air-filled structures.

1. Density

2. Contrast

3. Recorded Detail

4. Distortion

The patient has an impact on all properties affecting radiographic quality:

Subject Density

Refers to the impact the subject (patient) has on the resultant radiographic density.

Habitus

It is the patients body build

Radiographic contrast

_______ is the difference in densities of a recorded image.

Subject contrast

_______ is the degree of differential absorption resulting from the differing absorption characteristics of the tissues in the body.

Distortion

________ is the misrepresentation of the size or shape of the structure of interest.