MCC and neoplasm: T2 ratio IONPmono‐targeted 6 hr p.i./pre.i in PDAC ≈ 0.68 T2 ratio IONPbi‐targeted 6 hr p.i./pre.i in PDAC ≈ 0.53 T2 ratio IONPs‐PEG‐MCC scAbs 6 hr p.i./pre.i in PDAC ≈ 0.4 tumor weight ratio IONPs‐PEG‐MCC scAbs/IONPs‐PEG ≈ 0.37 (18 days p.t.)