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Biosensor imaging of redundant deviation in shifts (BIRDS), an ultrafast chemical shift imaging technique, requires infusion of paramagnetic probes such as 1,4,7,10‐tetraazacyclododecane‐1,4,7,10‐tetrakis methylene phosphonate (DOTP8−) complexed with thulium (Tm3+) ion (i.e. TmDOTP5−), where the pH‐sensitive resonances of hyperfine‐shifted non‐exchangeable protons contained within the paramagnetic...
Solid tumors have an acidic extracellular pH (pHe) but near neutral intracellular pH (pHi). Because acidic pHe milieu is conducive to tumor growth and builds resistance to therapy, simultaneous mapping of pHe inside and outside the tumor (i.e., intratumoral‐peritumoral pHe gradient) fulfills an important need in cancer imaging. We used Biosensor Imaging of Redundant Deviation in Shifts (BIRDS), which...
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