UNLABELLED:Energy-weighted acquisition is a technique for reducing Compton scatter effects in nuclear medicine images. The effect of energy-weighted acquisition on SPECT99mTc images was evaluated by comparing the energy-weighted acquisition images with those obtained using a 20% photopeak energy window. METHODS:SPECT images were compared using receiver operator characteristic (ROC) experiments testing the observer's ability to perform a pseudoclinical task. The tasks were detecting cold lesions within a uniform background and cold lesions within images created with a tomographic brain phantom. RESULTS:ROC analysis for each phantom produced different results. No significant difference was found between the two acquisition techniques in detecting cold lesions on uniform backgrounds. Energy-weighted acquisition improved cold lesion detection significantly within the brain phantom in comparison with 20% photopeak acquisition. CONCLUSION:Lesion detection in 99mTcSPECT images can be improved using energy-weighted acquisition. This improvement, however, is dependent on the nature of the object being imaged. Images with structure show improved detection, whereas uniform images do not.

译文

标注不明确:能量加权采集是一种用于减少核医学图像中康普顿散射效应的技术。通过将能量加权采集图像与使用20%光电峰能量窗口获得的能量加权采集图像进行比较,评估了能量加权采集对SPECT99mTc图像的影响。
方法:使用接收者操作员特征(ROC)实验比较SPECT图像,以测试观察者执行伪临床任务的能力。他们的任务是在均匀背景下检测冷损伤,并在通过层析X线体模创建的图像中检测冷损伤。
结果:每个体模的ROC分析产生不同的结果。在相同背景下检测冷损伤时,两种采集技术之间没有发现显着差异。与20%的光峰采集相比,能量加权采集显着改善了脑部幻影内的冷病变检测。
结论:利用能量加权采集可以改善99mTcSPECT图像中的病变检测。但是,这种改进取决于要成像的对象的性质。具有结构的图像显示出改进的检测,而均匀的图像则没有。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录