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Question (1)
2) Does the use of ECT introduce any Artifacts?
3) How can the use of ECT function be positive or detrimental to the AC factors?
For AC CT, it's my understanding that a proper HU differentiation will transpose into a more accurate SUV. For instance, if you utilize "Extended CT Scale", it will enable you to accurately differentiate between e.g a calcification in close proximity to bone chip, for which under normal scenario (without Extended CT scale) will amount into HU averaging and ultimately into a "Higher" SUV values due to "High HU" or narrow "Gray Scale". This scenario including that caused by Metal artifacts (High HU) in the vicinity of equally high HU lesions, is what Extended CT Scale is expected to resolve.
