[11C]Choline-PET imaging of breast cancer
2016
1110 Background: Molecular imaging techniques are increasingly being used in cancer diagnosis, staging, and assessment of response to treatment. This study sought to evaluate, for the first time, [11C]choline-PET in patients with breast cancer. The potential of [11C]choline-PET for differentiating tumours from normal tissue, correlation with molecular markers, determine its normal variability range, and finally the effect of trastuzumab on [11C]choline uptake in patients with breast cancer was investigated. Methods: 21 patients with newly diagnosed and recurrent breast cancer AJCC stage II-IV were enrolled in the study, all of whom had a baseline dynamic [11C]choline-PET scan with arterial sampling. 14 patients had 2 [11C]choline-PET scans to examine reproducibility, and 7 had a scan after trastuzumab. Analysis of [11C]choline uptake was measured using SUV, Ki (irreversible retention), and IRF@60min (retention using spectral analysis). Results: Breast tumour lesions were visualised by [11C]choline PET in ...
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