If the distance is doubled but all other factors remain the same, what change in technique is required to maintain IR exposure?

While evaluating an AP lumbar spine image acquired on a hypersthenic patient, the technologist notices the image appears fogged. What is the most likely cause?

Proper use of beam collimation decreases:

On average, what is the most likely result of a small change in beam filtration?

What image receptor configuration is most likely to provide the lowest patient dose during ankle examination?

While performing a portable hip examination, the technologist uses a grid and makes all needed changes to the technique. What is the most likely result?

What represents the best way to decrease patient dose while improving image quality during a fluoroscopic examination?

The primary source of occupational radiation exposure for technologists is the:

While performing a portable x-ray examination, what is the best method of technologist radiation protection?

What is the minimum lead equivalent required for a lead apron designed to be worn while operating machines with a peak energy of 100 kVp?

What is the minimum source-to-skin distance (SSD) for mobile fluoroscopes?

When using a variable-aperture rectangular collimator, coincidence between the light field and the x-ray beam must not exceed what percentage of SID?

What is the total filtration in aluminum equivalent require by the NCRP for x-ray tubes capable of operating above 70 kVp?

When working in fluoroscopy, which of the following represents the best way to decrease patient dose?

What type of exposure switch is required for all fluoroscopic units?

Which of the following techniques is the best for a neonate chest x-ray?

A portable chest performed at 100 kVp, 7.0 mAs, and 45-inch SID demonstrated appropriate exposure, but the image must be repeated due to patient motion. What is the technique required if the SID is decreased to 40 inches?

It is difficult to view the bones on an AP hip examination due to the image being too white. No amount of post-processing improves the visibility of bony anatomy. The technologist determines to repeat the image after changing the technique. How best should they proceed?

A technologist is asked to develop a new protocol for knee x-rays that will decrease magnification. Which of the following technical factors should be increased?

Increasing the effective focal spot size will most likely increase:

If a technique 5 mAs without a grid, how much mAs is required to maintain exposure using a 5:1 grid?

Patient with emphysema requires a portable chest x-ray. How should the technologist proceed?

While working with a patient who has a broken humerus, the technologist was unable to bring the patient's arm into alignment with the plane of the image receptor. What is the most likely result?

When using a fixed kVp technique chart, what factor is primarily used to control for changes in anatomic thickness?

What is the most likely result of failing to position the anatomy of interest over the active ionization chambers when using automatic exposure control?

When using a digital imaging system with a fixed matrix size, which of the following increases with increased field of view?

What is being imaged?

Which of the following has the largest impact on image spatial resolution?

What term refers to the total number of distinct levels of gray any given pixel can represent in a digital imaging system?

If a technologist was asked to review different imaging systems and provide recommendations on which system provides the best spatial resolution, what technical factor should be most closely considered?

When a technique lacks sufficient mAs, it can directly impact:

What imaging error is most likely to result in a lawsuit?

When using manual exposure controls to complete a pediatric chest x-ray, what mA setting is the best possible option, assuming the mAs remain the same?

What is being imaged?

What part of a fluoroscopic image intensifier converts light to electrons?

What is a major drawback of using fluoroscopic magnification?

What color of light is emitted by a computed radiography photostimulable phosphor plate after stimulation by the helium neon laser?

Which of the following measures best determines the performance of a flat-panel detector?

When using a photostimulable phosphor plate to capture the remnant beam, what processes the electrical signal from the photomultiplier and produces a digital image?

What term refers to the process of averaging pixel values to reduce high-frequency noise?

Which of the following is used by the computer to optimize image contrast and brightness based on predetermined reference values?

A display monitor with decreased pixel size demonstrates increased:

An image demonstrates areas of total blackness within the anatomy of interest. No changes to window width or level alter the blackened areas. This is best described as:

All other factors remaining constant, the imaging system with which of the following will demonstrate the best spatial resolution?

What term applies to using software programs to fill-in dead pixels using information from surrounding pixels?

Which of the following is the most likely result of an exposure field that is larger than is necessary for imaging?

An older flat-panel imaging system demonstrates image lag. How should the technologist proceed?

How should the technologist proceed if they suspect a flat-panel detector has a flaw, such as a series of dead pixels, that is producing a visible artifact?

When working with a photostimulable phosphor plate image receptor, what special consideration is recommended if the plate has not been used for examination over a prolonged period of time?

What device is most often used for display monitor quality control?

What is being imaged?

What 2 terms represent this picture?

What is the AAPM-TG 18 used for?

Image Acquisition, Image Display, Network, Storage System

Low contrast procedures are

line and space after it...

Which one of these is not a digital artifact?

What language is used for PACS?

Minification Gain X Flux Gain

What is being imaged?

What are the 2 types of data compression techniques?

What is being imaged?

How often must lead aprons be fluoroscopically inspected for damage?