What term describes unwanted appearance in multiplanar images, leading to loss of sharpness and detail?

The term that describes the unwanted appearance in multiplanar images, leading to a loss of sharpness and detail, is known as step artifact. This phenomenon occurs when images are reconstructed from a series of slices that do not perfectly overlap or align, which can result in discontinuities that are visually apparent in the final images. As a result, there can be noticeable gaps or "steps" in the structure being viewed, contributing to a loss of overall image quality.

Step artifacts are particularly relevant in computed tomography because precise imaging is crucial for accurate diagnosis and treatment planning. Understanding this artifact is essential for CT technologists to minimize its occurrence, which can enhance the interpretability of the images and improve patient care.

The other terms listed do not relate directly to the issue of sharpness and detail loss in this context. Stranding typically refers to an appearance in the soft tissue that can suggest underlying pathology. Surface rendering is a technique used in 3D imaging to create a visual representation of the surface of structures based on the data collected in CT scans. Stupor, on the other hand, relates to a state of reduced consciousness and has no relevance to imaging artifacts in CT.