CT and MR Imaging Analysis of Calcification Suspensions of Different Types and Concentrations.
- Author:
Young Chil CHOI
1
;
Hyun Joon SHIN
;
Jin Yong CHOI
Author Information
1. Department of Radiology, School of Medicine, Konkuk University, Chungju, Korea.
- Publication Type:Original Article
- Keywords:
Brain;
Calcification;
Computed tomography;
Magnetic resonance
- MeSH:
Basal Ganglia;
Brain;
Calcium;
Calcium Phosphates;
Magnetic Resonance Spectroscopy;
Suspensions
- From:Journal of the Korean Neurological Association
2009;27(2):158-162
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: High-density calcifications on CT images can appear as high signals on T1-weighted MR images, but with differing extents and degrees. This study investigated CT and MR images of calcifications of various types and concentrations. METHODS: We analyzed CT and MR images of two cases of bilateral basal ganglia calcifications and experimental suspensions of calcifications of different types and concentrations. RESULTS: The density of CT calcifications increased in proportion to their concentration regardless of their type. However, the MR signals differed with the types and concentrations of calcification. A high signal was one of the most noticeable signs on T1-weighted MR images for calcium phosphate, and it increased for concentrations up to 0.2 g/mL before leveling off. The signal for all types of calcification decreased on T2-weighted and especially fluid-attenuated inversion recovery (FLAIR) images. CONCLUSIONS: High signals are characteristic of calcification on T1-weighted MR images, and are often stronger than those on CT images. A low signal appears consistently on FLAIR MR images regardless of the calcification type. These findings might be helpful in evaluating calcifications apparent in MR images.
