Digital Fluoroscopy PPT

What is fluoroscopy used to image

movement

What are the 2 types of xray examinations

fluoroscopy and radiography

Radiography is static or dynamic

static

Fluoroscopy is static or dynamic

dynamic

Where is the IR located in fluoroscopy

above patient

Where is the xray source located in fluoroscopy

under the patient’s table

Who was the fluoroscope invented by

Thomas Edison

What is the function of a charge coupled device (CCD)

diverts physical light photons to electrons

The benefits of CCDs

high sensitivity and small size

What is the purpose of the image intensifier tube

receives xrays and connects it to visible light image

Where is the image intensifier located

above patient

What is the purpose of using masks and pulsing in fluoro

removes anatomy we don’t care about and enhances the ones we want to see

Temporal + energy =

hybrid

When is hybrid used

most of the time

How does digital fluoroscopy reduce patient dose

by using a pulsing beam

How does DF affect spatial resolution

improves it

How does DF affect contrast resolution

improves it

What is the best modality for SR

CT

What is the worst modality for SR

nuclear med

What is the best modality for CR

mammography

What is the worst modality for CR

sonography

What is DQE a measure of

xray absorption efficiency

Most of what kind of dose is due to fluoroscopy

occupational dose