A SCATTER CORRECTION METHOD FOR TL-201 IMAGES - A MONTE-CARLO INVESTIGATION

被引:8
作者
HADEMENOS, GJ
KING, MA
LJUNGBERG, M
ZUBAL, IG
HARRELL, CR
机构
[1] LUND UNIV,DEPT RADIAT PHYS,S-22185 LUND,SWEDEN
[2] YALE UNIV,SCH MED,DEPT DIAGNOST RADIOL,NEW HAVEN,CT 06510
关键词
D O I
10.1109/23.256733
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Results from the application of a modified dual photopeak window (DPW) scatter correction method to Monte Carlo simulated Tl-201 emission images are presented. In the Monte Carlo investigation, individual simulations were performed for six radiation emissions of Tl-201. For each emission, point sources of Tl-201 were imaged at various locations in a water-filled elliptical tub phantom using three energy windows: two 12% windows abutted at 72 keV and a third 10 keV window placed to the right of the photopeak window (95.001 keV - 105.000 keV). The third window was used to estimate the spilldown contribution from the Tl-201 gamma rays in each of the two photopeak windows. Using the corrected counts in these two windows, the DPW method was applied to each point source image to estimate the scatter distribution. For point source images in both homogeneous and non-homogeneous attenuating media, the application of this modified version of DPW resulted in an approximately six-fold reduction in the scatter fraction and an excellent agreement of the shape of the tails between the estimated scatter distribution and the Monte Carlo-simulated truth. This method was also applied to two views of an extended cardiac distribution within an anthropomorphic phantom, again, resulting in at least a six-fold improvement between the scatter estimate and the Monte Carlo-simulated true scatter.
引用
收藏
页码:1179 / 1186
页数:8
相关论文
共 38 条
  • [1] AXELSSON B, 1984, J NUCL MED, V25, P490
  • [2] CHARKES ND, 1990, J NUCL MED, V31, P147
  • [3] EISNER R, 1988, J NUCL MED, V29, P91
  • [4] TL-201 MYOCARDIAL SCINTIGRAPHY - IMPROVED SENSITIVITY, SPECIFICITY AND PREDICTIVE ACCURACY BY APPLICATION OF A STATISTICAL IMAGE-ANALYSIS ALGORITHM
    FARIS, JV
    BURT, RW
    GRAHAM, MC
    KNOEBEL, SB
    [J]. AMERICAN JOURNAL OF CARDIOLOGY, 1982, 49 (04) : 733 - 742
  • [5] FLOYD CE, 1985, J NUCL MED, V26, P403
  • [6] FLOYD JL, 1991, J NUCL MED, V32, P805
  • [7] PARAMETERIZATION OF THE SCATTER RESPONSE FUNCTION IN SPECT IMAGING USING MONTE-CARLO SIMULATION
    FREY, EC
    TSUI, BMW
    [J]. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 1990, 37 (03) : 1308 - 1315
  • [8] INTRODUCTION TO HOLOSPECTRAL IMAGING IN NUCLEAR-MEDICINE FOR SCATTER SUBTRACTION
    GAGNON, D
    TODDPOKROPEK, A
    ARSENAULT, A
    DUPRAS, G
    [J]. IEEE TRANSACTIONS ON MEDICAL IMAGING, 1989, 8 (03) : 245 - 250
  • [9] GALT JR, 1992, J NUCL MED, V33, P2232
  • [10] PROGNOSTIC IMPORTANCE OF THALLIUM UPTAKE BY THE LUNGS DURING EXERCISE IN CORONARY-ARTERY DISEASE
    GILL, JB
    RUDDY, TD
    NEWELL, JB
    FINKELSTEIN, DM
    STRAUSS, HW
    BOUCHER, CA
    [J]. NEW ENGLAND JOURNAL OF MEDICINE, 1987, 317 (24) : 1485 - 1489