Bourguignon M H, Valette H, Le Guludec D, Pauwels E K, Merlet P, Raynaud C, Syrota A
Service Hospitalier Frédéric Joliot, Département de Biologie du, Orsay, France.
Eur J Nucl Med. 1987;13(6):278-82. doi: 10.1007/BF00256549.
Stress 201Tl myocardial images were obtained using a standard ECG gated acquisition protocol for 10 min per view. These images were filtered using a three dimensional space and time filter. The effects of filtering were evaluated by sectorial analysis. Comparing raw and filtered dynamic images, quantification demonstrated that filtering did not produce artefacts. A conventional static image was also obtained as the sum of the series of unfiltered dynamic images. Comparison of raw static and filtered diastolic images indicated that the latter demonstrated myocardial abnormalities more clearly (P less than 0.01) in 33 patients. Improvement in the signal to noise ratio produced by filtering made cinematic display and visual analysis possible which was not feasible with raw gated images. Clinical evaluation is in progress.
采用标准的心电图门控采集方案，每个视角采集10分钟，获取应激201铊心肌图像。这些图像使用三维时空滤波器进行滤波。通过扇形分析评估滤波效果。对原始动态图像和滤波后的动态图像进行比较量化，结果表明滤波未产生伪影。还获取了常规静态图像，即一系列未滤波动态图像的总和。对原始静态图像和滤波后的舒张期图像进行比较，结果表明在33例患者中，后者能更清晰地显示心肌异常（P<0.01）。滤波所产生的信噪比的改善使得电影显示和视觉分析成为可能，而这对于原始门控图像是不可行的。临床评估正在进行中。
