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General Questions

MRI

CT

X-Ray

Mammograms

Ultrasound

Arthrograms

Nuclear Medicine

Hip Joint Injection

Bone Density Scans

 

What is an X-ray?

An x-ray or radiograph is similar to having a photograph taken in a portrait studio. A Radiologic Technologist (RT) uses non-visible x-rays (shorter wavelength) to expose film similar to a photographer using visible light to expose film. The exposed radiographic film demonstrates the body structures and is called a radiograph. X-rays, demonstrate body structures proportionally with their density. The denser the tissue, (bone versus fat) less x-ray reaches the film. This difference in body tissue density is why bone (high body tissue density) is white on a radiograph, as compared to fat (low body tissue density) which is gray or air (no density) which is black.