Abstract
In this Technical Note, the effects of different flat-field techniques are examined for a cesium iodide flat panel detector, which exhibited a slightly nonlinear exposure response. The results indicate that the variable flat-field correction method with the appropriate polynomial fit provides excellent correction throughout the entire exposure range. The averaged normalized variation factor, used to assess the nonuniformity of the flat-field correction, decreased from 30.76 for the fixed correction method to 4.13 for the variable flat-field correction method with a fourth-order polynomial fit for the 60 kVp spectrum, and from 16.42 to 3.97 for the 95 kVp spectrum.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 391-393 |
| Number of pages | 3 |
| Journal | Medical Physics |
| Volume | 33 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2006 |
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ASJC Scopus subject areas
- Biophysics
Cite this
An improved method for flat-field correction of flat panel x-ray detector. / Kwan, Alexander L C; Seibert, J Anthony; Boone, John M.
In: Medical Physics, Vol. 33, No. 2, 02.2006, p. 391-393.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - An improved method for flat-field correction of flat panel x-ray detector
AU - Kwan, Alexander L C
AU - Seibert, J Anthony
AU - Boone, John M
PY - 2006/2
Y1 - 2006/2
N2 - In this Technical Note, the effects of different flat-field techniques are examined for a cesium iodide flat panel detector, which exhibited a slightly nonlinear exposure response. The results indicate that the variable flat-field correction method with the appropriate polynomial fit provides excellent correction throughout the entire exposure range. The averaged normalized variation factor, used to assess the nonuniformity of the flat-field correction, decreased from 30.76 for the fixed correction method to 4.13 for the variable flat-field correction method with a fourth-order polynomial fit for the 60 kVp spectrum, and from 16.42 to 3.97 for the 95 kVp spectrum.
AB - In this Technical Note, the effects of different flat-field techniques are examined for a cesium iodide flat panel detector, which exhibited a slightly nonlinear exposure response. The results indicate that the variable flat-field correction method with the appropriate polynomial fit provides excellent correction throughout the entire exposure range. The averaged normalized variation factor, used to assess the nonuniformity of the flat-field correction, decreased from 30.76 for the fixed correction method to 4.13 for the variable flat-field correction method with a fourth-order polynomial fit for the 60 kVp spectrum, and from 16.42 to 3.97 for the 95 kVp spectrum.
UR - http://www.scopus.com/inward/record.url?scp=31844450577&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=31844450577&partnerID=8YFLogxK
U2 - 10.1118/1.2163388
DO - 10.1118/1.2163388
M3 - Article
C2 - 16532945
AN - SCOPUS:31844450577
VL - 33
SP - 391
EP - 393
JO - Medical Physics
JF - Medical Physics
SN - 0094-2405
IS - 2
ER -