The diagnostic value of PET/CT fusion images in metastatic tumors of the body: research based on the comparison of CT,SPECT or PET images
- VernacularTitle:PET/CT融合图像在体部转移性肿瘤中的诊断价值——与CT、SPECT或PET的比较研究
- Author:
Ming WEN
- Publication Type:Journal Article
- Keywords:
Metastatic tumor;
Tomography;
X-ray Computer;
Tomography;
emission computer;
Single photon emission computed tomography;
Image fusion
- From:
Journal of Chongqing Medical University
2003;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the diagnostic value of PET/CT fusion images in the research field of metastatic tumors of the body by the comparison of CT,SPECT or PET images.Methods:The analysis was based on 19 cases with 60 metastatic lesions.The final diagnoses were confirmed by surgery,biopsy and pathology.CT,SPECT or PET and PET/CT were applied in all cases.CT scanning was applied in 19 cases.Among them,there were 9 plain examinations,and on the basis of that,the other 10 cases were applied enhancement scanning.SPECT was applied in 11 cases.Among them,there were also another 8 cases which were applied PET.Combined PET/CT examinations were performed in 19 cases.PET/CT was separately compared with CT,SPECT or PET findings,and the its numbers,localization,size,the distrubution of radionuclide,the involvement of lymph node and local swelling of soft tissues of the lesions were recorded.Results: There were 9 cases of pulmonary metastasis and the detective rate of PET/CT was 100%(29/29 cases),SPECT or PET 86.2%(25/29 cases),CT 82.8%(24/29 cases);7 cases of spine metastasis and the detective rate of PET/CT was 100%(17/17 cases),SPECT or PET 88.2%(15/17 cases),CT 76.5%(13/17 cases);3 cases of hepatic metastasis,and the detective rate of PET/CT was 100%(14/14 cases),SPECT or PET 71.4%(10/14 cases),CT 78.6%(11/14 cases)respectively.Conclusion:The shape and anatomic position of metastatic lesion can be clearly detected on CT image;nuclear medicine images such as SPECT,PET can provide excellent information on functional biology.Referring to PET/CT,it is a very useful method in detecting lesions of the shape and construction,and it can also provide more functional information,localization and characterization of metastatic lesion,PET/CT image can differentiate physiologic uptake,and meanwhile promote the differentiation of its physiologic intake.
