Comparing filtered backprojection and ordered-subsets expectation maximization for small-lesion detection and localization in 67Ga SPECT

Autor: R G, Wells, M A, King, P H, Simkin, P F, Judy, A B, Brill, H C, Gifford, R, Licho, P H, Pretorius, P B, Schneider, D W, Seldin

Publikováno v: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. 41(8)

Iterative reconstruction of SPECT images has recently become clinically available as an alternative to filtered backprojection (FBP). However, there is conflicting evidence on whether iterative reconstruction, such as with the ordered-subsets expecta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::916854d2539c292ea936158f40c67b36
https://pubmed.ncbi.nlm.nih.gov/10945533

An investigation of the estimation of ejection fractions and cardiac volumes by a quantitative gated SPECT software package in simulated gated SPECT images

Autor: A D, Achtert, M A, King, S T, Dahlberg, P H, Pretorius, K J, LaCroix, B M, Tsui

Publikováno v: Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology. 5(2)

The purpose of this investigation was to determine the accuracy of the estimation of ejection fractions (EFs) and left ventricular volumes from a commercially available software package (Quantitative Gated SPECT [QGS]) as a function of different true

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::12d3a5ab5e3803edf04e03beabeeeaba
https://pubmed.ncbi.nlm.nih.gov/9588666

Determination of glomerular filtration rate with radionuclide renography and direct urinary activity quantitation

Autor: A C, Otto, P H, Pretorius, M, Dunn, M G, Nel, A, van Aswegen, J, Marais, M G, Lötter

Publikováno v: South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde. 85(8)

The direct urinary activity quantitation method is quick (approximately 40 minutes), requires only a single blood sample, is performed as part of standard renal scanning and shows high accuracy compared with 24-hour creatinine clearance. The purpose

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::8df51cb0f4cba2c224fd5fc0f5241c5b
https://pubmed.ncbi.nlm.nih.gov/8553148

The channel ratio method of scatter correction for radionuclide image quantitation

Autor: P H, Pretorius, A J, van Rensburg, A, van Aswegen, M G, Lötter, D E, Serfontein, C P, Herbst

Publikováno v: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. 34(2)

The accuracy of quantitation of radionuclide distributions in human tissue with the scintillation camera is decreased by attenuation and scatter of photons. If scatter correction is applied satisfactorily, narrow beam attenuation can be applied. In t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::f7dc0056242781c5379b66795c11766d
https://pubmed.ncbi.nlm.nih.gov/8429357

Estimation of the Rigid-Body Motion from Three-Dimensional Images Using a Generalized Center-of-Mass Points Approach.

Autor: Feng B; B. Feng, P. P. Bruyant, P. H. Pretorius, R. D. Beach, H. C. Gifford, J. Dey, and M. A. King are with the Department of Radiology, University of Massachusetts Medical School, Worcester, MA 01655. M. Gennert is with the Department of Computer Science, Worcester Polytechnic Institute, Worcester, MA., Bruyant PP, Pretorius PH, Beach RD, Gifford HC, Dey J, Gennert M, King MA

Publikováno v: IEEE transactions on nuclear science [IEEE Trans Nucl Sci] 2006 Oct; Vol. 53 (5), pp. 2712-2718.