Direct Flat Panel Technology Concepts

The video tutorial explains digital radiography, focusing on the two main categories of flat panels: indirect and direct. Indirect panels use a scintillation layer to convert x-rays into light, with two types: TFT and CCD. TFT panels use a scintillating layer made of cesium iodide or gadolinium oxy sulphide, while CCD panels use fiber-optic cables. Direct panels convert x-rays directly into electrons using amorphous selenium. The tutorial covers the components and functions of each type, emphasizing the differences in spatial resolution and cost.

What is the primary distinction between indirect and direct flat panels in digital radiography?

• The use of a scintillation layer

• The type of x-ray used

• The size of the panel

• The speed of image processing

Which material is used in the scintillating layer of a TFT panel to prevent light from spreading?

• Cesium iodide

• Gadolinium oxy sulphide

• Amorphous selenium

• Amorphous silicon

What is the role of the photodiode substance in a TFT panel?

• To store the electrons

• To release electrons to the computer

• To convert light into electrons

• To convert x-rays into light

In a TFT panel, what does the storage capacitor do?

• Converts x-rays into light

• Holds electrons from the photodiode

• Releases electrons to the computer

• Increases spatial resolution

What is the main advantage of using cesium iodide in a TFT panel?

• Lower cost

• Higher spatial resolution

• Faster processing time

• Larger panel size

What connects the scintillating layer to the collection element in a CCD panel?

• Amorphous silicon

• Thin film transistors

• Storage capacitors

• Fiber-optic cables

In a CCD panel, what is the function of the charge coupled device?

• To convert x-rays into light

• To increase spatial resolution

• To convert light into an electrical signal

• To store the electrical signal

What compound is used in the capture element of direct flat panels?

• Amorphous silicon

• Gadolinium oxy sulphide

• Amorphous selenium

• Cesium iodide

How do direct flat panels differ from indirect panels in terms of components?

• They have a higher spatial resolution

• They use fiber-optic cables

• They have only a capture and collection element

• They use a scintillation layer

What happens to x-rays in the capture element of a direct flat panel?

• They are converted into light

• They are released to the computer

• They are converted directly into electrons

• They are stored in a capacitor