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FIG 2. In vivo identification of an unknown peak.
A, In vivo spectrum obtained in a healthy volunteer demonstrates the absence of any visible peak between those of creatine and choline.
B, Spectrum from an area of histologically proven radionecrosis in a 22-year-old man demonstrates a small peak centered at 3.15 ppm (arrow).
C, Spectrum from an area of suspected infarction (confirmed at 6-month clinical follow-up) in a 58-year-old woman demonstrates a large citrulline peak between those of creatine and choline.
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