Spatial Recognition: A Temporal Tale of Multiple Window Spatial Registration.

IF 0.4 Q4 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Indian Journal of Nuclear Medicine Pub Date : 2023-04-01 Epub Date: 2023-06-08 DOI:10.4103/ijnm.ijnm_145_22
R L Vijayaraghavan, S Koilraj, Eileen Cynthia Kanakaraj
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引用次数: 0

Abstract

Purpose: The performance ability of position logic circuitry of gamma-camera to superimpose the X-Y gains obtained from different pulse height analyzers is multiple window spatial registration (MWSR). This study was conducted to evaluate the feasibility of dual-tracer method using 99mTc and 131I to assess MWSR.

Materials and methods: The procedure was carried out on a dual-head gamma-camera with rectangular NaI (Tl) crystal using a point source containing 99mTc pertechnetate and 131I-NaI. Pixel coordinates, full width at half-maximum of point spread function at 364 keV and 140 keV, and pixels with maximum count of images for dual detectors were analyzed and compared.

Results: The experiment demonstrated an excellent correlation between the X and Y coordinates identified on 364 keV and 140 keV images (Spearman's coefficient of rank correlation: 0.9, P < 0.0001). Intraclass correlation of studies performed on two separate occasions showed a good correlation (k = 0.87) demonstrating the reproducibility of the procedure.

Conclusion: Dual-tracer method for evaluation of MWSR is a reproducible, accurate, and logical alternative to the routine National Electrical Manufacturers Association procedure.

Abstract Image

Abstract Image

Abstract Image

空间识别:多窗口空间配准的时间故事。
目的:伽马相机的位置逻辑电路将不同脉冲高度分析器获得的X-Y增益叠加的性能是多窗口空间配准(MWSR)。本研究旨在评估使用99mTc和131I双示踪剂方法评估MWSR的可行性。材料和方法:该程序在具有矩形NaI(Tl)晶体的双头伽马相机上进行,使用含有99mTc-高锝酸盐和131I-NaI的点源。分析和比较了双探测器的像素坐标、364keV和140keV下点扩散函数的半最大全宽以及具有最大图像计数的像素。结果:实验证明了364keV和140keV图像上确定的X和Y坐标之间的良好相关性(Spearman秩相关系数:0.9,P<0.0001)。在两个不同场合进行的研究的组内相关性显示了良好的相关性(k=0.87),证明了该程序的可重复性。结论:双示踪剂法评估MWSR是一种可重复、准确和合乎逻辑的替代美国电气制造商协会常规程序的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Indian Journal of Nuclear Medicine
Indian Journal of Nuclear Medicine RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
0.70
自引率
0.00%
发文量
46
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