| Literature DB >> 3143236 |
L A Dell1, M S Brown, W W Orrison, C G Eckel, N A Matwiyoff.
Abstract
CT and MR imaging showed basal ganglia calcification that appeared as high signal intensity on T1-weighted images of a patient with pseudohypoparathyroidism. MR imaging of an experimental model of calcium phosphate suspensions showed a signal similar to that seen in the patient. Additionally, T1 and T2 relaxation times of the solutions were measured and showed decreases in both parameters with increasing calcium phosphate concentrations. Intracranial calcification can appear as high signal intensity on T1-weighted images. An experimental model shows that the calcium salt decreases the T1 of surrounding water. Therefore, calcium, and possibly other elements, may induce paramagnetic susceptibility effects.Entities:
Mesh:
Year: 1988 PMID: 3143236 PMCID: PMC8331895
Source DB: PubMed Journal: AJNR Am J Neuroradiol ISSN: 0195-6108 Impact factor: 3.825