Question

What would a continuous, fine, horizontal white line across the computed radiography image indicate?

A. Dirt on the light guide or laser head.
B. Backscatter artifact.
C. Static electricity.
D. A crack in the phosphor layer of the cassette.

Answer 1

A continuous, fine, horizontal white line across the computed radiography image would most likely indicate D. A crack in the phosphor layer of the cassette.

Explanation:

A continuous, fine, horizontal white line in a computed radiography (CR) image suggests a structural issue within the cassette used for imaging. The phosphor layer in the cassette is responsible for capturing the X-ray image, and any disruption or damage to this layer can result in artifacts on the image. A crack in the phosphor layer would allow the entry of light, leading to the creation of the white line during the image processing.

Among the given options, "Dirt on the light guide or laser head" and "Static electricity" are less likely to cause a continuous, horizontal line. Backscatter artifact, while it can cause streaks, typically appears more diffuse and scattered. Understanding the potential causes of artifacts in radiography images is crucial for diagnostic accuracy, as it allows technicians to identify and address issues that may impact the quality of medical imaging.

Identifying the specific nature of artifacts aids in troubleshooting and maintaining the integrity of diagnostic imaging systems. In the case of a continuous, fine, horizontal white line, recognizing it as a potential crack in the phosphor layer prompts further investigation and corrective measures to ensure the accuracy of medical diagnoses.

Answer 2

A continuous, fine, horizontal white line across the computed radiography image would indicate B. Backscatter artifact.

Step-by-step explanation:

The presence of a continuous, fine, horizontal white line in a computed radiography image typically points to the occurrence of a backscatter artifact. Backscatter artifacts occur when scattered radiation reaches the image receptor, creating undesired markings on the image. In this case, the fine horizontal line suggests interference from scattered radiation, disrupting the quality of the radiographic image. Backscatter artifacts are commonly caused by factors such as improper collimation, incorrect positioning of the X-ray beam, or inappropriate exposure parameters.

Understanding and identifying artifacts in radiographic images are essential skills for radiologic technologists. In the case of a backscatter artifact, adjustments to the imaging technique, such as improving collimation and optimizing exposure factors, can help mitigate the issue. Proper equipment maintenance and quality control measures are also crucial to minimize artifacts and ensure the production of high-quality diagnostic images. Radiographers must be diligent in recognizing and addressing artifacts to enhance the accuracy and diagnostic value of radiographic images for patient care.

In summary, a continuous, fine, horizontal white line in a computed radiography image is indicative of a backscatter artifact, commonly caused by scattered radiation affecting the image receptor. Identifying and addressing such artifacts are integral to maintaining the quality and diagnostic integrity of radiographic images in the field of medical imaging.

Correct option is B. Backscatter artifact.