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Abstract

Physiologic intracranial calcification with hyperintensity on MR imaging: case report and experimental model.

L A Dell, M S Brown, W W Orrison, C G Eckel and N A Matwiyoff
American Journal of Neuroradiology November 1988, 9 (6) 1145-1148;
L A Dell
Center for Non-Invasive Diagnosis, University New Mexico, School of Medicine, Albuquerque 87131.
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M S Brown
Center for Non-Invasive Diagnosis, University New Mexico, School of Medicine, Albuquerque 87131.
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W W Orrison
Center for Non-Invasive Diagnosis, University New Mexico, School of Medicine, Albuquerque 87131.
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C G Eckel
Center for Non-Invasive Diagnosis, University New Mexico, School of Medicine, Albuquerque 87131.
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N A Matwiyoff
Center for Non-Invasive Diagnosis, University New Mexico, School of Medicine, Albuquerque 87131.
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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.

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American Journal of Neuroradiology
Vol. 9, Issue 6
1 Nov 1988
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Physiologic intracranial calcification with hyperintensity on MR imaging: case report and experimental model.
L A Dell, M S Brown, W W Orrison, C G Eckel, N A Matwiyoff
American Journal of Neuroradiology Nov 1988, 9 (6) 1145-1148;

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Physiologic intracranial calcification with hyperintensity on MR imaging: case report and experimental model.
L A Dell, M S Brown, W W Orrison, C G Eckel, N A Matwiyoff
American Journal of Neuroradiology Nov 1988, 9 (6) 1145-1148;
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