Imaging & Radiology · Medical Imaging · Medium
Attenuation
Meaning: Reduction in intensity of an X-ray or ultrasound beam as it passes through tissue.
In practice: Bone causes high attenuation of X-rays, so it appears white on a radiograph.
Quick check
Two questions on related imaging & radiology words.
Which word means: Describes an area appearing brighter than surrounding tissue on an MRI sequence.
Answer: Hyperintense
Which word means: Partial or complete collapse of a lung or part of a lung.
Answer: Atelectasis
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