| 摘要 |
A detector for an X-ray computed tomography apparatus has a number of detector elements separated from one another be septa forming a detector line. For improving the efficiency of the detector, the septa are arranged according to the relationship: <math-cwu id="MATH-US-00001"> <number>1</number> <math> <mrow> <mrow> <mrow> <mo>{</mo> <msub> <mi>s</mi> <mi>k</mi> </msub> <mo>}</mo> </mrow> <mo>=</mo> <mrow> <munderover> <mo>⋃</mo> <mrow> <mi>m</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>j</mi> </munderover> <mo>⁢</mo> <mrow> <mo>{</mo> <mrow> <munderover> <mo>⋃</mo> <mrow> <mi>p</mi> <mo>=</mo> <mrow> <mrow> <mo>-</mo> <mi>z</mi> </mrow> <mo>/</mo> <mn>2</mn> </mrow> </mrow> <mrow> <mi>z</mi> <mo>/</mo> <mn>2</mn> </mrow> </munderover> <mo>⁢</mo> <mrow> <mo>{</mo> <mrow> <mi>p</mi> <mo>⁢</mo> <mstyle> <mtext> </mtext> </mstyle> <mo>·</mo> <mstyle> <mtext> </mtext> </mstyle> <mo>⁢</mo> <msub> <mi>n</mi> <mi>m</mi> </msub> <mo>⁢</mo> <mstyle> <mtext> </mtext> </mstyle> <mo>·</mo> <mstyle> <mtext> </mtext> </mstyle> <mo>⁢</mo> <msub> <mi>D</mi> <mn>1</mn> </msub> </mrow> <mo>}</mo> </mrow> </mrow> <mo>}</mo> </mrow> </mrow> </mrow> <mo>,</mo> </mrow> </math> <mathematica-file id="MATHEMATICA-00001" file="US20020001362A1-20020103-M00001.NB"/> <image id="EMI-M00001" wi="216.027" he="25.9119" file="US20020001362A1-20020103-M00001.TIF" imf="TIFF" ti="MF"/> </math-cwu> wherein {sk} is the total number of septum locations, zepsiN is the number of channels, D1 is the smallest width of a detector element, Di=ni Di is the width of the ith subdivision, whereby i>1 and ni>ni-1 apply, and jepsiN is the number of different widths Di.
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