Tumor quantitation and monitoring in whole-body planar technetium-99m-sestamibi imaging.

Tumor quantitation and monitoring in whole-body planar technetium-99m-sestamibi imaging.
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全身平面 technetium-99m-sestamibi 成像中的肿瘤定量和监测。

DOI:
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发表时间:
1997
影响因子:
9.3
通讯作者:
A. Waxman
A. Waxman
中科院分区:
医学1区
文献类型:
--
作者:
S. V. Van Kriekinge;G. Germano;C. Forscher;G. Rosen;P. Gupta;A. Waxman

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无标签 我们开发了一个全自动软件包,用于标准化、严格配准和弹性匹配肢体肿瘤患者的连续全身平面图像。该软件对肿瘤摄取和大小的变化进行分析和定量。 方法 该软件由一系列包含多种自动算法的模块组成。刚性配准算法根据与患者颈部和膀胱相对应的特征点通过平移和旋转来对齐图像。弹性匹配算法通过结合头部、躯干和腿部区域的阈值处理和局部特征分析,为序列中的每个图像生成网格。然后,线性变形算法对像素值和位置进行插值,以使所有图像中的网格点与其中一幅图像(参考图像)的网格点一致。序列中的所有图像都根据大脑摄取进行标准化。使用从单个用户选择的种子点自动确定的 ROI 在所有图像中对肿瘤摄取和大小进行定量。 结果 该软件在来自 5 名患者的 4 个 2 图像序列和 1 个 3 图像序列(11 个图像)上进行了测试。身体轮廓重叠的定量测量显示,未配准、严格配准和严格配准+匹配图像的平均序列内一致性分别为 73.4%、78.7% 和 91.5%。 结论 我们的方法代表了一种客观的定量工具,用于测量连续全身闪烁扫描图像中的肿瘤活动,并且可能有助于评估肿瘤对化疗或放疗的反应。
UNLABELLED We have developed a completely automatic software package to normalize, rigidly register and elastically match serial whole-body planar images from patients with limb tumors. Variations in tumor uptake and size are analyzed and quantitated by the software. METHODS The software consists of a chain of modules incorporating several automatic algorithms. A rigid registration algorithm aligns images by translation and rotation based on feature points corresponding to the patient's neck and bladder. An elastic matching algorithm generates a grid for each image in a sequence by combining thresholding and local feature analysis in the head, torso and leg regions. A linear warping algorithm then interpolates pixel values and locations to make the grid points in all images coincide with the grid points of one of them (the reference image). All images in a sequence are normalized based on brain uptake. Quantitation of tumor uptake and size is performed in all images using an ROI automatically determined from a single user-selected seed point. RESULTS The software was tested on four 2-image and one 3-image sequences from five patients (11 images). Quantitative measurements of body contour overlap show an average intrasequence agreement of 73.4%, 78.7% and 91.5% for unregistered, rigidly registered and rigidly registered + matched images, respectively. CONCLUSION Our method represents an objective, quantitative tool to measure tumor activity in sequential whole-body scintigraphic images, and may help assess tumor response to chemotherapy or radiation therapy.
DOI: --
发表时间: 1990-10
期刊: Journal of nuclear medicine : official publication, Society of Nuclear Medicine
影响因子: --
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发表时间: 1993
影响因子: 3.1
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影响因子: --
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DOI: --
发表时间: 1992
期刊: Journal of nuclear medicine : official publication, Society of Nuclear Medicine
影响因子: --
作者:
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通讯作者: Thrall,DE
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DOI: --
发表时间: 1994
期刊: Journal of nuclear medicine : official publication, Society of Nuclear Medicine
影响因子: --
作者:
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