|
|
|
|
| LEADER |
01000caa a22002652 4500 |
| 001 |
NLM269112030 |
| 003 |
DE-627 |
| 005 |
20250221064738.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231224s2009 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1109/TNS.2009.2019110
|2 doi
|
| 028 |
5 |
2 |
|a pubmed25n0896.xml
|
| 035 |
|
|
|a (DE-627)NLM269112030
|
| 035 |
|
|
|a (NLM)28216696
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Piatt, Jacob A
|e verfasserin
|4 aut
|
| 245 |
1 |
2 |
|a A Backprojection-Based Parameter Estimation Technique for Skew-Slit Collimation
|
| 264 |
|
1 |
|c 2009
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Revised 20.11.2019
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a To estimate geometric parameters in a skew-slit single photon emission computed tomography (SPECT) scan, a simple method is presented that uses a single point source and a backprojection process. The method employs one point source placed sufficiently far from the axis of rotation but in the field of view. A skew-slit geometry is considered where the estimated parameters include the focal lengths of both opaque planes and the location of multiple transaxial slits and a single axial slit. Computer simulations show that view-angle independent parameters can be uniquely estimated. Three experimental scans were performed, and the view-angle independent parameters were accurately estimated. Tilt, sagging, and mechanical shifts result in parameters that change depending on the view angle in the experimental scans. These view-angle dependent parameters were estimated using the single point-source technique, but reconstructed phantom images showed some error in the estimation of the view-angle dependent parameters
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a Acquisition geometry
|
| 650 |
|
4 |
|a SPECT
|
| 650 |
|
4 |
|a computed tomography
|
| 650 |
|
4 |
|a parameter estimation
|
| 650 |
|
4 |
|a pinhole
|
| 650 |
|
4 |
|a skew-slit
|
| 700 |
1 |
|
|a Zeng, Gengsheng L
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t IEEE transactions on nuclear science
|d 1988
|g 56(2009), 3 vom: 20., Seite 687-693
|w (DE-627)NLM098149350
|x 0018-9499
|7 nnns
|
| 773 |
1 |
8 |
|g volume:56
|g year:2009
|g number:3
|g day:20
|g pages:687-693
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1109/TNS.2009.2019110
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 56
|j 2009
|e 3
|b 20
|h 687-693
|