Which mathematical technique assumes uniform attenuation and is effective in areas with uniform tissue?

The Chang Technique is a mathematical method specifically designed for correcting attenuation in positron emission tomography (PET) images. It operates under the assumption of uniform attenuation, which means that it presupposes a consistent level of attenuation throughout the tissue being imaged. This method is particularly effective in regions where the tissue is uniform, allowing for improved image quality by compensating for the effects of attenuation on the detected gamma rays emitted from the radiotracer.

In practical terms, this technique is beneficial in situations where the tissue composition does not vary significantly, making it easier to apply a uniform correction. The results can enhance the accuracy and clarity of the PET images, making the Chang Technique a popular choice in clinical applications.

While other techniques listed may have their own uses in imaging or signal processing, they do not specifically align with the assumption of uniform attenuation as effectively as the Chang Technique does in the context of PET imaging.