Morgan Desiree E
Department of Radiology University of Alabama at Birmingham, 619 19th Street South, JTN 456, Birmingham, AL 35249-6830, USA.
Radiol Clin North Am. 2018 Jul;56(4):565-585. doi: 10.1016/j.rcl.2018.03.005.
The added value and strength of dual energy computed tomography for the evaluation of oncologic patients revolve around the use of lower energy reconstructed images and iodine material density images. Lower keV simulated monoenergetic images optimize soft tissue tumor to nontumoral attenuation differences and increase contrast to noise ratios to improve lesion detection. Iodine material density images or maps are helpful from a qualitative standpoint for image interpretation because they result in improved detection and characterization of tumors and lymph node involvement, and from a quantitative assessment by enabling interrogation of specific properties of tissues to predict and assess therapeutic response.
双能计算机断层扫描在肿瘤患者评估中的附加值和优势在于使用低能量重建图像和碘物质密度图像。较低keV的模拟单能图像优化了软组织肿瘤与非肿瘤组织的衰减差异，提高了对比噪声比，以改善病变检测。碘物质密度图像或图谱从定性角度有助于图像解读，因为它们能改善肿瘤及淋巴结受累情况的检测与特征描述，从定量评估角度，通过对组织特定属性的分析来预测和评估治疗反应。
