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• W2005318992 abstract "The aim of this prospective study was to assess the feasibility of a state-of-the-art clinical PET/CT scanner for in vivo tumor imaging in mice in comparison to a small animal PET scanner and a small animal CT scanner. Seventeen female NMRI nude mice bearing a subcutaneous transplanted murine mammary carcinoma (EMT6) on the right hind limb were examined using a clinical PET/CT scanner (biograph Sensation 16®), a dedicated small animal PET scanner (MOSAIC® system), and a dedicated small animal CT scanner (MicroCAT® II). 18 F-fluoroazomycin arabinoside ( 18 F-FAZA) was used as PET tracer for imaging of regional tumor hypoxia. The examination of tumor-bearing mice using a state-of-the-art clinical PET/CT scanner, a dedicated small animal PET scanner and a dedicated small animal CT scanner revealed good image quality and allowed the evaluation and correlation of molecular/metabolic alterations of cancers with anatomical/morphological findings. The tumor lesions showed a 1.89 ± 0.6 higher mean tumor-to-background ratio ± SD for the dedicated small animal PET scanner than the PET from the clinical PET/CT scanner (P<0.001). The mean tumor-to-background ratio of the PET of the clinical PET/CT scanner showed a high correlation with the mean tumor-to-background ratio of the dedicated small animal PET scanner (r 2 = 0.92). The tissue hypoxia in the subcutaneous transplanted EMT6 tumors did not correlate with the tumor volume. Clinical PET/CT scanners are widely available and could contribute not only to human clinical routine examinations, but also to tumor research in animals. The molecular/metabolic information is reduced when imaging small tumors of mice with clinical PET/CT scanners due to the low spatial resolution and sensitivity of the PET scanners. The examination of small tumors in mice should be resevered to research centers with small animal PET/CT scanners because they provide promising hope to achieve accurate measurement of activity concentration. For tumor research in humans and animals using clinical PET/CT scanners, PET scanners with a higher spatial resolution and a higher sensitivity will be highly promising, but will be in competition to PET/MRI." @default.
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• W2005318992 date "2006-10-01" @default.
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• W2005318992 title "<i>In Vivo</i> Tumor Imaging in Mice Using a State-of-the-Art Clinical PET/CT in Comparison with a Small Animal PET and a Small Animal CT" @default.
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• W2005318992 doi "https://doi.org/10.1177/153303460600500511" @default.
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