scholarly journals Morphologic Assessment of Corpus Callosum in the Patient of Alzheimer Disease using Magnetic Resonance Imaging

2009 ◽  
Vol 13 (2) ◽  
pp. 84-95
Author(s):  
Youl-Hun Seoung ◽  
Bo-Young Choe
Author(s):  
A.I. Zamiatina, M.V. Medvedev

A case of prenatal diagnosis of the corpus callosum lipoma at 32–33 weeks of gestation is presented. In a consultative examination, a hyperechoic formation with clear contours was found in the projection of the septum pellucidum, occupying the rostrum, genu, and truncus of corpus callosum, without signs of intratumorally blood flow in the color Doppler mapping mode. The prenatal diagnosis of "callosum lipoma" was established, confirmed after the birth of a child during magnetic resonance imaging.


2021 ◽  
pp. 088307382110162
Author(s):  
Xu Li ◽  
Qing Wang

Objectives: We analyzed the magnetic resonance imaging (MRI) manifestations of fetal corpus callosum abnormalities and discussed their prognosis based on the results of postnatal follow up. Methods: One hundred fifty-five fetuses were diagnosed with corpus callosum abnormalities by MRI at our hospital from 2004 to 2019. Gesell Development Scales were used to evaluate the prognosis of corpus callosum abnormalities after birth. Results: Corpus callosum abnormalities were diagnosed in 149 fetuses from singleton pregnancies, and 6 pairs of twins, 1 in each pair is a corpus callosum abnormality. Twenty-seven cases (27/155) were lost to follow up, whereas 128 cases (128/155) were followed up. Of these, 101 cases were induced for labor, whereas 27 cases were born naturally. Among the 27 cases of corpus callosum abnormality after birth, 22 cases were from singleton pregnancies (22/27). Moreover, 1 twin from each of 5 pairs of twins (5/27) demonstrated corpus callosum abnormalities. The average Gesell Development Scale score was 87.1 in 19 cases of agenesis of the corpus callosum and 74.9 in 3 cases of hypoplasia of the corpus callosum. Among the 5 affected twins, 2 had severe neurodevelopmental delay, 2 had mild neurodevelopmental delay, and 1 was premature and died. Conclusion: The overall prognosis of agenesis of the corpus callosum is good in singleton pregnancies. Hypoplasia of the corpus callosum is often observed with other abnormalities, and the development quotient of hypoplasia of the corpus callosum is lower compared with agenesis of the corpus callosum. Corpus callosum abnormalities may occur in one twin, in whom the risk may be increased.


2008 ◽  
Vol 83 (3) ◽  
pp. 162-168 ◽  
Author(s):  
Tulika Gupta ◽  
Balbir Singh ◽  
Kanchan Kapoor ◽  
Madhur Gupta ◽  
Suman Kochar

2021 ◽  
Vol 12 (3) ◽  
pp. 114-120
Author(s):  
Fathima Hana Maqsood ◽  
Adarsh Kibballi Madhukeshwar ◽  
Abdul Rasheed Valiyapalathingal ◽  
Vinayaka U.S ◽  
Devadas Acharya ◽  
...  

Transient splenial lesions (TSL) are not of frequent occurrence and are usually observed with other diseases. The mechanism of TSL development still unclear despite of various theories put forward. These are secondary lesions and their diagnosis is of importance to associate them with clinical conditions. Magnetic resonance imaging is the modality of diagnosing TSL and 3T MRI was used in this study. The study includes 10 cases of TSL with varied disease etiologies like migraine, trauma, infection, demyelination etc. All the cases had follow-up imaging which showed resolution of the lesions after varied time intervals. An attempt to correlate the various theories with each type of disease is done in this study.


2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Allen A Champagne ◽  
Emile Peponoulas ◽  
Itamar Terem ◽  
Andrew Ross ◽  
Maryam Tayebi ◽  
...  

Abstract Increasing evidence for the cumulative effects of head trauma on structural integrity of the brain has emphasized the need to understand the relationship between tissue mechanic properties and injury susceptibility. Here, diffusion tensor imaging, helmet accelerometers and amplified magnetic resonance imaging were combined to gather insight about the region-specific vulnerability of the corpus callosum to microstructural changes in white-matter integrity upon exposure to sub-concussive impacts. A total of 33 male Canadian football players (meanage = 20.3 ± 1.4 years) were assessed at three time points during a football season (baseline pre-season, mid-season and post-season). The athletes were split into a LOW (N = 16) and HIGH (N = 17) exposure group based on the frequency of sub-concussive impacts sustained on a per-session basis, measured using the helmet-mounted accelerometers. Longitudinal decreases in fractional anisotropy were observed in anterior and posterior regions of the corpus callosum (average cluster size = 40.0 ± 4.4 voxels; P < 0.05, corrected) for athletes from the HIGH exposure group. These results suggest that the white-matter tract may be vulnerable to repetitive sub-concussive collisions sustained over the course of a football season. Using these findings as a basis for further investigation, a novel exploratory analysis of strain derived from sub-voxel motion of brain tissues in response to cardiac impulses was developed using amplified magnetic resonance imaging. This approach revealed specific differences in strain (and thus possibly stiffness) along the white-matter tract (P < 0.0001) suggesting a possible signature relationship between changes in white-matter integrity and tissue mechanical properties. In light of these findings, additional information about the viscoelastic behaviour of white-matter tissues may be imperative in elucidating the mechanisms responsible for region-specific differences in injury susceptibility observed, for instance, through changes in microstructural integrity following exposure to sub-concussive head impacts.


1989 ◽  
Vol 26 (7) ◽  
pp. 659-668 ◽  
Author(s):  
Peter Hauser ◽  
I.Deborah Dauphinais ◽  
Wade Berrettini ◽  
Lynn E. DeLisi ◽  
Joel Gelernter ◽  
...  

1996 ◽  
Vol 243 (3) ◽  
pp. 231-234 ◽  
Author(s):  
Patrick Vermersch ◽  
Jean Roche ◽  
Mich�le Hamon ◽  
Christine Daems-Monpeurt ◽  
Jean-Pierre Pruvo ◽  
...  

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