Measured attenuation correction

Measured attenuation correction

• Correctly accounts for variable m(x) throughout the scanned region.
• Quantitatively more accurate than calculated attenuation correction in human subjects.

• More table time for subject to acquire the transmission scan.
• Additional radiation exposure from transmission scan
• Introduces additional statistical noise since attenuation correction coefficients are the ratios of measured counts.
• Motion artifacts

Advantages

Disadvantages

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