3D volumetric imaging methods are now a common component of medical imaging in many imaging modalities. But relatively little is known about how human observers locate targets obscured by noise and clutter when scrolling through a 3D image and how this compares to a similar task confined to a single 2D slice.
The current study aimed to compare components of reader performance in 3D images with 2D images, in which scrolling is not possible, to see if subjects are able to integrate multiple slices into an identifying location response. a target of interest.
The researchers created images in the study that were simulations intended to approximate high-resolution CT imaging. The images were generated in 3D and viewed as 2D slices, and test subjects in the experiment were able to freely inspect the images, including scrolling through the 3D images.
The researchers found no evidence that readers combine information from multiple sections of the image to locate a target that spans multiple sections of the image. They felt that readers essentially treated the 3D volumetric image as a stack of independent 2D images.
The results warrant further investigation, but they support and help explain the need for multiple views in 3D image playback, and they provide useful information for modeling viewer performance in volumetric images, the researchers concluded. authors.
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