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Abstract Objective：To explore 1.5 T Whole Body Diffusion Weighted-Imaging and its clinical application value. Method：4 volunteers， 9 cancer patients and 4 health examination in our hospital were collected for 1.5 T whole body diffusion weighted imaging of volunteers， with maximum intensity projection method and anti window view， got a total body thin diffusion weighted and 3D images， and found the suspicious positive lesions to bureau of the Ministry of the conventional MRI or CT scanning， analysis and evaluation and statistics on the image.Result：16 cases got clear threedimensional images， image evaluation was 91.1%， of which 3 volunteers and 2 patients tested negative， 1 cases were detected in testicular hydrocele， 2 cases were cystic lesions， 8 cases of tumor patients with metastasis detection， the positive rate was about 68.8%， the detection of malignant the tumor was 88.9%， the diagnostic effect on tumor and normal MRI or CT consistency was good， no statistical significance（ P>0.05）.Conclusion：Magnetic resonance whole body diffusion weighted imaging with the sensitivity for detection of disease， can basically meet the clinical medical screening and diagnosis， can be used for routine physical examination，diagnosis and curative effect evaluation of malignant tumor is of high clinical value.
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