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HELICAL CT & MULTI-SLICE HELICAL CT

Physics

HELICAL CT & MULTI-SLICE HELICAL CT

1. Introduced the concept of pitch.

2. Pitch influences dose, image quality & scan time.

3. Multi-slice helical CT can obtain multiple slices simultaneously.

4. Advantages of multi-slice CTs - speed, better resolution, can change pitch to reduce dose.

5. Disadvantages - complex reconstruction requiring greater computing power, over-ranging (can potentially increase dose to patient).


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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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