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SPECT-NOISE

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SPECT-NOISE

1. Noise is a major issue with SPECT.
2. Largely as counts are only made for 30 seconds in each projection (low number of photons).
3. Movement artefact would occur if we waited longer than this.
4. We usually use a pixel matrix of 64x64 or 128x128 to reduce noise.
5. This gives SPECT a low spatial resolution (worse than planar imaging).


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REFERENCES

1. Bushberg, J. T. (2012). The essential physics of medical imaging. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. Find it at Amazon
2. Heggie, J. C., Liddell, N. A., & Maher, K. P. (1997). Applied imaging technology. Melbourne: St. Vincents Hospital.

Ⓒ A. Manickam 2018

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