Typical magnetization prepared phantoms require paramagnetic salts such as copper, nickel and manganese chloride, which are toxic. Accordingly, governing bodies label these as hazardous materials requiring special storage, labeling and disposal. In search of a simpler and cheaper solution we have revisited this topic to make a kitchen-safe phantom recipe that is both cheap and easy to make. We used glycerine (a sweetener or for skin care) and Agar agar powder (a food additive for thickening or gel) to make phantoms with a physiological range of T1 and T2, and characterize these non-hazardous materials for 1.5 T MRI scanners.
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