Question 1

Select the TRUE statement from the choices below.

Accepted Answer

The art of image critique involves applying scientific knowledge to analyze and evaluate images, making statement A true.

Question 2

Image critique is particularly challenging with current technology due to the problems centering around

Accepted Answer

The question is specifically asking about image critique in relation to current technology, and the option that refers to "the sophistication of the digital technologies used" is most relevant to this context. This suggests that the challenges in image critique are related to the complex nature of modern imaging equipment and the specialized knowledge and skills required to use them effectively. While patient positioning and preparation procedures can also be important factors in obtaining high-quality images, they are less directly related to technology and may not be as challenging to address. The option about new x-ray tube designs is not as directly related to the difficulties in image critique with current technology, as it implies a potential solution rather than a problem.

Question 3

Generally speaking, the process of image analysis should start with

Accepted Answer

It is important to review the entire image before jumping to conclusions or identifying patterns. This ensures that all relevant information is considered and helps to avoid false assumptions. Starting with a hypothesis or selection of a final hypothesis can also bias the analysis and limit the scope of possible causes.

Question 4

All of the following are related EXCEPT

Accepted Answer

All of the other choices (B, C, and D) relate directly to potential issues with equipment, while choice A is related to timing errors that may result from human error or malfunctioning equipment.

Question 5

An image that demonstrates too little contrast would represent

Accepted Answer

Contrast is a technical factor that relates to the difference in brightness between the light and dark areas of an image. If there is too little contrast, the image may appear dull or lacking in detail, which is a technical factor problem. Procedural factor problems relate to errors in how an image is taken, such as incorrect positioning or movement during the scan, while equipment malfunction problems indicate issues with the imaging equipment itself.

Question 6

All of the following would be classified as technical factor problems EXCEPT

Accepted Answer

Residual barium in the patient's colon is a patient factor problem, not a technical factor problem. The other three options are technical factor problems, such as image quality (A and C) or exposure settings (D).

Question 7

An optimal diagnostic quality radiograph

Accepted Answer

An optimal diagnostic quality radiograph is always within acceptable limits, meaning that it meets the criteria for diagnostic imaging while limiting unnecessary radiation exposure. It does not necessarily show cues or patterns of underlying problems or warrant an ALARA violation.

Question 8

Geometric problems dealing with distortion could be due to

Accepted Answer

Geometric distortion in radiography can be caused by misalignment of the x-ray tube, such as the anode-cathode axis not being perpendicular to the image receptor. This can lead to elongation or foreshortening of the image, which can affect accurate diagnosis. Focal spot selection, collimation problems, and inadequate mAs can also affect image quality, but they are not specifically related to geometric distortion.

Question 9

An image is presented to the department quality control coordinator by a disgruntled radiologist that shows an asymmetrically narrowed ankle mortis on an AP projection.His dissatisfaction would be most likely classified as a

Accepted Answer

The radiologist's dissatisfaction is likely due to the asymmetrically narrowed ankle mortise, which is related to the positioning of the patient's foot during the imaging procedure. Therefore, the issue is most likely a procedural factor patient positioning problem. The other answer choices are less likely to be the cause of the issue.

Question 10

The presence of the Moire effect on an image indicates a problem with

Accepted Answer

The Moire effect is caused by interference patterns between the grid lines of a CR cassette and the scanning laser used to read the image. Therefore, the presence of this effect indicates a problem with the CR cassette and grid.

Question 11

A photographic problem with visibility of detail would be likely due to

Accepted Answer

Inadequate kVp can cause a photographic problem with visibility of detail as it affects the quality of the X-ray beam, resulting in a decrease in contrast and detail resolution. A higher kVp setting is needed to penetrate thicker areas of the body, but if it is insufficient, the image may appear underexposed with poor visibility of details. Improper SID, OID, and focal spot selection can affect other aspects of the image such as magnification and blur, but not necessarily visibility of detail.

Question 12

Static marks on a film radiographic image represent

Accepted Answer

The answer of Static marks on a film radiographic image...

Question 13

Images that are grossly overexposed

Accepted Answer

Grossly overexposed images will have lost much of the fine detail and will appear washed out or blown out, making it difficult to distinguish features or edges in the image. This results in poor visibility of detail, making option C the correct choice.

Question 14

As medical imaging continues to adopt digital imaging technologies, one of the greatest challenges for technologists regarding image analysis will be

Accepted Answer

All of the above statements are potential challenges for technologists regarding image analysis in medical imaging. Technologists may need to determine if an issue with an image is due to a photographic problem (such as motion blur) or a geometric problem (such as distortion). They may also need to identify if any electronic issues are causing problems with the image. Additionally, it is important to ensure that post-processing algorithms are accurate and not introducing errors into the analysis.

Question 15

The three alignment factors include the

Accepted Answer

All three alignment factors (x-ray tube, anatomical part, and image receptor) are crucial in obtaining an accurate radiographic image. The x-ray tube must be properly angled and positioned to avoid distortion and ensure appropriate image contrast. The anatomical part being imaged must also be positioned correctly in relation to the image receptor to ensure proper alignment and reduce the risk of superimposition. Finally, the image receptor must be positioned accurately to capture the entire area of interest and provide a clear, high-quality image.

Question 16

Problems with radiographic/fluoroscopic equipment can be kept to a minimum by

Accepted Answer

A quality control program ensures that radiographic/fluoroscopic equipment is regularly checked, maintained, and calibrated, minimizing problems and ensuring optimal performance.

Question 17

Technical factor problems can include both

Accepted Answer

The answer of Technical factor problems can include both
...

Question 18

Select the FALSE statement from the choices below.

Accepted Answer

Equipment malfunction can involve any equipment used in radiology, not just radiographic/fluoroscopic equipment. It can also include malfunction of computer systems, monitors, printers, and other associated equipment.

Question 19

With film-screen radiography, the largest percentage of image quality problems center around

Accepted Answer

Automatic processing is often the source of image quality problems in film-screen radiography due to issues like improper chemical replenishment, temperature control, and processing time.

Question 20

If the electronic timer of a high frequency generator is suspect,

Accepted Answer

The best choice is to call a qualified service engineer because they have the knowledge and expertise to diagnose and repair problems with electronic equipment. A spinning top test or comparing the timer with a stopwatch may not provide an accurate assessment of the issue, and calculating an exposure time modifier may not address the underlying problem with the timer.

Quiz 30: The Art of Image Critique