HST 2025-26 Medical Imaging D1-4 Test Review

Posterior (dorsal)

The back of the body

Lead-lined protective equipment works because

Lead is dense and stops x-rays from passing through

Each day radiologic technician works with

different patients with different injuries

An AP image

Taken from the front of the body looking towards the back

What is an oblique shot?

An image taken from a different angle.

What does an oblique shot reveal?

Structures that can't be seen from the top or side.

The most common X-ray views

Oblique, Lateral, and PA or AP

Two bones in the lower leg

Tibia and fibula

Malignant Cells

Cancerous cells able to grow into surrounding tissue, spread to other parts of the body and destroy normal cells.

Angiogram

An X-ray photograph of blood or lymph vessels.

Frequency

How fast waves of energy travel

The ideal distance between an X-ray tube and an X-ray cassette

40 inches

ROYGBIV refers to

visible light spectrum

Barium

A mixture that is swallowed to permit radiological examination of the stomach or intestines

Endoscopy

An illuminated optical instrument to visualize the interior of the body and its organs

The safe distance from an x-ray source

6 feet

Is a radiology technician qualified to diagnose and treat injuries

No, they are qualified to take X rays

Regarding the frquency of X Rays and visible light

X rays have frequency faster than visible light

A lead apron is needed during X-rays

for all patients and staff

Osteoporosis is most common in

the hip, spine and wrist

Bone density

Hardness of the bone

Bones show up in X-rays

they are dense and don't allow X-rays to penetrate them

Doctors use Dual-Energy X-ray Absorptiometry (DEXA) to

Determine if a patient's bone density is improving or declining

Osteoporosis

causes bones to become porous and brittle

A disease that weakens the bones

Osteoporosis

X-rays measure

Density

X-ray tubes

can burn out

A vacuum is

an empty space in which there is no air or other gas

A cathode is

a solid material that collects or produces an electric current

Barium is used for imaging of the stomach and intestines because

it can be swallowed, is dense and doesn't dissolve in water

An Upper Gastro Intestinal (UGI) image will show

the esophagus and stomach

A flurocope

takes continuous images to create a video of internal organs.

In a fluroscopic procedure

bubbles in the liquid create air pockets to allow the doctor to see the barium more clearly.