Physiologic intracranial calcification with hyperintensity on MR imaging: case report and experimental model.
نویسندگان
چکیده
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.
منابع مشابه
کلسیفیکاسیون فیزیولوژیک داخل جمجمه‌ای در غده پینه‌آل و شبکه کوروئید در مراجعه‌کنندگان به بخش سی‌تی اسکن بیمارستان امام رضا (ع) بیرجند در سال‌های 1376 لغایت 1385
Background and Aim: Intracranial physiologic calcification is not accompanied by any evidence of disease and has no demonstrable pathological cause. It is often due to calcium deposition in the blood vessels of different structures of the brain. Computed tomography (CT) is the most sensitive means of detection of for this calcification. The aim of this study was the assessment of the intracrani...
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عنوان ژورنال:
- AJNR. American journal of neuroradiology
دوره 9 6 شماره
صفحات -
تاریخ انتشار 1988