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Assessment of simulated patient motion and its effect on myocardial perfusion SPECT using two reconstruction methods (Filtered Backprojection;FBP and Iterative method) [Persian]

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1. Britten A J, Jamali F, Gane J N, Joseph

Anton EA. Motion detection and correction

using multi-rotation 180 single-photon

emission tomography for thallium myocardial

imaging. Eur J Nucl Med 1998; 25: 1524

1530.

2. Wackers Frans JTH. Myocardial perfusion

imaging. In: Sandler MP, Coleman RE,

Patton JA. Diagnostic nuclear medicine. 4th ed. Philadelphia, USA, Lippincott Williams

& Wilkins, 2003; 273-341.

3. Matsumoto N, Berman DS, Kavanagh PB.

Quantitative assessment of Motion artifacts

and validation of a new Motion-Correction

program for Myocardial perfusion SPECT. J

Nucl Med 2001; 42: 687-694.

4. Hatton RL, Hutton BF, Angelides S, Choong

KK, Larcos G. Improved tolerance to missing

data in myocardial perfusion SPET using

OSEM reconstruction. Eur J Nucl Med Mol

Imaging. 2004; 31(6): 857-61.

5. Wells RG, King MA, Simkin PH, Judy PF,

Brill AB, Gifford HC. Comparing filtered

backprojection and ordered-subsets

expectation maximization for small-lesion

detection and localization in 67Ga SPECT. J

Nucl Med. 2000; 41(8): 1391-9.

6. Seret A. Number of iterations when

comparing MLEM/OSEM with FBP. J Nucl

Med. 2004; 45(12): 2125-6.

7. Bai J, Yokoyama K, Kinuya S, Nakajima K,

Yamada M, Ichiyanagi K. Preliminary

evaluation of image reconstruction by

ordered-subset expectation maximization in

thallium-201 lung scintigraphy. Ann Nucl

Med. 2003; 17(7): 619-24.

8. Lee KJ, Barber DC. Use of forward

projection to correct patient motion during

SPECT imaging. Phys Med Biol. 1998; 43:

171-187.

9. O'Connor M K, Evaluation of

motion-correction techniques in cardiac SPECT. J

Nucl Med 2000; 41(7):1298.

10. Leslie WD, Dupont JO, McDonald D,

Peterdy AE. Comparision of motion

correction algorithms for cardiac SPECT. J

Nucl Med 1997; 38(5): 785-789.

11.

MW. A quantitative assessment of patient

motion and its effect on myocardial perfusion

SPECT images. J Nucl Med 1993;

34:303-310.

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