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12. Circle of Willis at CT angiography: dose reduction and image quality--reducing tube voltage and increasing tube current settings. Waaijer A, Prokop M, Velthuis BK, Bakker CJ, de Kort GA, van Leeuwen MS. Radiology; 2007 Mar; 242(3):832-9. PubMed ID: 17229873 [Abstract] [Full Text] [Related]
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