Dual-modality imaging

被引:16
|
作者
Hasegawa, B
Tang, HR
Da Silva, AJ
Wong, KH
Iwata, K
Wu, MC
机构
[1] Univ Calif San Francisco, Phys Lab, Dept Radiol, S San Francisco, CA 94080 USA
[2] Univ Calif Berkeley, Bioengn Grad Grp, Berkeley, CA 94720 USA
基金
美国国家卫生研究院;
关键词
dual-modality imaging; attenuation correction; image fusion; single-photon emission computed tomography (SPECT); positron emission tomography (PET); computed tomography (CT);
D O I
10.1016/S0168-9002(01)00976-7
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
In comparison to conventional medical imaging techniques, dual-modality imaging offers the, advantage of correlating anatomical information from X-ray computed tomography (CI) with functional measurements from single-photon emission computed tomography (SPECT) or with positron emission tomography (PET). The combined X-ray/radionuclide images from dual-modality imaging can help the clinician to differentiate disease from normal uptake of radiopharmaceuticals, and to improve diagnosis and staging of disease. In addition, phantom and animal studies have demonstrated that a priori structural information from CT can be used to improve quantification of tissue uptake and organ function by correcting the radionuclide data for errors due to photon attenuation, partial volume effects, scatter radiation, and other physical effects. Dual-modality imaging therefore is emerging as a method of improving the visual quality and the quantitative accuracy of radionuclide imaging for diagnosis of patients with cancer and heart disease. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:140 / 144
页数:5
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