Image Production Attempt 1 - RadTechBootcamp

Which three of these changes will improve the spatial resolution recorded in the radiographic image?

Decreased FSS, decreased OID, increased SID

The primary function of the analog-to-digital converter in a CR plate reader is to convert

Electrical signals into binary signals

The relationship between kVp and image receptor exposure is described according to which of the following principles?

15% rule

The deceleration of energized electrons occurs at what aspect of the x-ray tube assembly

Anode

When SID is increased, what change must be made to maintain IR expsoure

Increase mAs

The side of the x-ray tube with a negative charge is the

Cathode

Which of the following changes increases the severity of the anode heel effect

Decreasing SID

To effectively use the anode heel effect, the thickest part of the patient’s anatomy should be placed under which portion of the x-ray beam?

Cathod portion

Which two of the following are affected when the SID is changed?

Size distortion, IR exposure

When using AEC, which of the following can be employed to reduce patient motion while maintaing proper IR exposure

Increased mA setting

The selection of the small filament causes what change to the size of the actual focal spot?

Decrease

Dynamic range is defined as the

Range of exposures that can be captured by a detector

Which of these anatomic structures can be used as an indicator of the spatial resolution recorded in the radiographic image?

Trabecular bone

Which of the following technical factor adjustments should be made when negative contrast media agents are used?

Decreased kVp

What millampere-seconds (mAs) is produced when 220 milliamperes and 1/5 second exposure time are used?

44 mAs

An x-ray of the sternum uses a 72inch SID and a 10inch by 12inch image receptor. If the image of the sternum measures 9 cm and the actual sternum measures 6 cm, what is the magnification factor

1.5

As the angle of the anode decreases, what happens to the heat loading capacity of the x-ray tube

Decreases

Scatter radiation does NOT affect

Recorded spatial resolution

How is a gross overexposure error demonstrated in a digital image

Missing data points

An x-ray was taken using 110 kVp and 5 milliampere-seconds on a high-frequency machine. How many heat units were producd if the rectification constant is 1.40

770

What component of the x-ray tube assembly is the actual source of x-ray photons?

Anode target

Which of the following will determine the average pixel value?

Region of interest (ROI)

The fill factor of the direct radiography image receptor is the

Sensitive portion of the detector element compared to the non-sensitive portion

In an image intensifier, electronic intensification occurs when electrons are moved at high speed from the:

Photocathode to the output phosphor

As the angle of the anode decreases, the tube loading capacity of the x-ray tube:

Decreases

Which of the following will decrease the size of the effective focal spot

Decrease in target angle

Which of these digital radiography systems will have the highest contrast resolution

12-bit system

What is the most common cause of an off-level grid error

Grid misalignment due to uneven patient weight distribution