PURPOSE: To test the hypothesis that calcium can be visible on MR images without being visible on CT. METHODS: Five different calcium salts ranging in concentration from 0 to 0.45 g/mL were suspended in 2% agarose gel and studied using T2-weighted MR, T1-weighted MR, and CT. MR signal intensity, CT attenuation, and image noise were measured. Relative visibility was determined from these measurements. RESULTS: CT was shown to be more than 10 times as sensitive as T2-weighted MR or T1-weighted MR for the detection of calcium. CONCLUSION: MR cannot show calcium that is occult on CT.
PURPOSE: To test the hypothesis that calcium can be visible on MR images without being visible on CT. METHODS: Five different calcium salts ranging in concentration from 0 to 0.45 g/mL were suspended in 2% agarose gel and studied using T2-weighted MR, T1-weighted MR, and CT. MR signal intensity, CT attenuation, and image noise were measured. Relative visibility was determined from these measurements. RESULTS: CT was shown to be more than 10 times as sensitive as T2-weighted MR or T1-weighted MR for the detection of calcium. CONCLUSION: MR cannot show calcium that is occult on CT.
Authors: Ingrid E Chesnick; Jeffrey T Mason; Anthony A Giuseppetti; Naomi Eidelman; Kimberlee Potter Journal: Biophys J Date: 2008-05-16 Impact factor: 4.033
Authors: Devkumar Mustafi; Xiaobing Fan; Bo Peng; Sean Foxley; Jeremy Palgen; Gillian M Newstead Journal: Phys Med Date: 2015-09-29 Impact factor: 2.685
Authors: A M Boers; I A Zijlstra; C S Gathier; R van den Berg; C H Slump; H A Marquering; C B Majoie Journal: AJNR Am J Neuroradiol Date: 2014-08-07 Impact factor: 3.825