X-ray tube circuit/Reproducibility/Linearity

The x-ray tube uses what type of current?

DC

The transformers within x-ray circuit use what current?

AC

Rectifiers are located?

Between step up transformer and X-ray tube

Rectifiers convert?

AC to DC

The step down transformer is part of which circuit?

Filament circuit

Which two components operate on the principle of self induction?

Autotransformer and choke coil

The autotransformer is the?

kV selector

The autotransformer is located

Primary side of circuit

Major and minor kvp selectors are located?

On autotransformer

Primary circuit

Line compensator, autotransformer, exposure switch, and timer circuitS

Secondary circuit

High voltage transformer; rectifiers; x-ray tube

Filament Circuit

Step down transformer, rheostat; filament

Actual exposure time must be within +-_% of indicated exposure time

5

Actual center of the x-ray beam must align to the centering indicator within

1%

Actual kVp must be within _% of the assigned kvp?

5%

Reproducibility with the same technical factors must be within _% or less

5%

mAs measurements between adajacent mA stations should not vary more than?

10%

Exposure linearity must be within _%

10%

The light field must not exceed _% of the SID

2%

What is the benefit of using a three-phase power supply in radiography over a single-phase

It produces a more constant x-ray output

How do AEC systems influence radiographic image productions?

Automatically determines exposure time

What is the correct procedure when using AEC for an obese patient

Use same settings

A radiologic technologist notices that a digital radiographic image of a dense anatomical area is under penetrated making that area underexposed. What adjustment would improve image quality significantly increasing the patient’s radiation dose?

Increase kVp by 15% and decrease mAs by half

What role do transformers within x-ray generators play in the production of x-rays

They control voltage applied to the x-ray tube

Analyzing the impact of pixel distribution on image quality, what effect does increasing the number of pixels in a radiographic image sensor have on spatial resolution

Increase

A radiology department is experiencing inconsistencies in image quality across different examination rooms. What is the first step standardizing image quality for diagnostic accuracy?

Calibrating all radiographic display monitors to the same standard

How does a pixel pitch test contribute to image quality in DR ?

It evaluates the bit depth of the pixels used in image processing

During DR procedure if an image appears too dark, indicated overexposure what adjustment should the technologist make?

Decrease mAs

Which of the following tests is essential for ensuring the correct operation of the AEC system in a radiographic unit?

Density control accuracyW

Which feature of display monitors affects the ability to differentiate between small contras differences in radiographic images?

Luminance

Why is consistent calibration of radiographic equipment important in achieving reliable diagnostic results

It maintains the accuracy of image reproduction over time

Which factor has the greatest impact on the production of characteristic radiation in the x-ray tube?

Target material

How is a gross overexposure error demonstrated in a digital image?

Missing data points

Assuming all other technical factors are constant, which field size will produce the lowest image receptor exposure? Large or small

Small

A technologist is reviewing a digital radiograph and notices that the image appears overly smooth, lacking the expected detail and sharpness. What image processing technique might have been over applied?

Noise reduction