IMAGE QUALITY . NOISE LINEARITY CROSS-FIELD UNIFORMITY IMAGE ARTIFACTS. NOISE IN CT. FLUCTUATION OF CT# BETWEEN POINTS IN THE IMAGE FOR A SCAN OF UNIFORM MATERIAL SUCH WATER. NOISE IN CT. NOISE LEVEL. PERCENTAGE OF CONTRAST OR IN CT NUMBERS. NOISE LEVEL %= STANDARD DEVIATION /CT # RANGE.
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NOISE LEVEL %= STANDARD DEVIATION /CT # RANGE
THEY SHOULD BE CONSTANT AT ANY POINT IN THE IMAGE OF PHANTOM
INCOMPLETE PROJECTION PROFILES
STAR SHAPED ARTIFACTS
AVERAGE CT NUMBERS IN SLICE