Xray physics Chp 13, 15 and 16 review Exam 3

The electronic vacuum tube that converts the remnant beam to light, then to electrons, then back to light, increasing the light intensity in the process is the

• mirror optics

• xray tube

• image intensifier

Tags

NGSS.MS-PS4-2

The __________________________ absorbs x-rays and emits light.

• Input phosphor

• Output phosphor

Tags

NGSS.HS-PS4-3

The _____________________ is designed to set the electron stream in motion at a constant velocity, and is located very close to the output phosphor.

• Input phosphor.

• acclerating anode

• Photocathode

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

This part of the image intensifier absorbs light and produces electrons.

• Input phosphor.

• Photocathode

• Output phosphor

The _______________________ is bonded (attached) directly to the input phosphor.

• Photocathode

• Input phosphor.

• Output phosphor

The ratio of the number of light photons at the output phosphor as compared with the input phosphor is the

• brightness gain

• flux gain

An expression of the ability of an image intensifier tube to convert x-ray energy into light energy and increase the brightness of the image in the process is the

• brightness gain

• flux gain

• minification gain

Tags

NGSS.HS-PS4-5

The formula for brightness gain is

• brightness gain = minification gain / flux gain

• brightness gain = minification gain × flux gain

• brightness gain = minification gain - flux gain

Tags

NGSS.HS-PS4-5

The formula for minification gain is

• minification gain = input phosphor diameter / output phosphor diameter

• minification gain = output phosphor diameter / input phosphor diameter

• minification gain = output phosphor diameter2 / input phosphor diameter2

The function of the fluoroscopic unit that maintains the overall appearance of the fluoroscopic image (contrast and density) by automatically adjusting the kilovoltage peak (kVp), milliamperage (mA), or both is

• APR

• ABC

• DQE

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5