Use the Table and the Given X-Ray Absorption Diagrams to Identify

question 99

Multiple Choice

Use the table and the given X-ray absorption diagrams to identify the composition of each of the regions marked by a letter. The number in each region shows its absorption, and the number on each X-ray beam shows the total absorption for that beam. $$\begin{array} { | l | l | l | l | l | l | l | } \hline \text { Type } & \text { Air } & \text { Water } & \text { Gray matter } & \text { Tumor } & \text { Blood } & \text { Bone } \\\hline \text { Absorption } & 0 & 1,000 & 1,020 & 1,030 & 1,050 & 2,000 \\\hline\end{array}$$ $a = 3100$ , $b = 3080$ , $c = 3070$

• A)x = Blood y = Bone Z = Blood
• B) x = Blood Y = Gray matter Z = Tumor
• C) x = Bone Y = Blood Z = Bone
• D) x = Gray matter Y = Tumor Z = Blood
• E) x = Tumor Y = Blood Z = Gray matter

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