Changes in brain size in hepatic encephalopathy: a coregistered MRI study.

Magnetic resonance imaging (MRI) coregistration techniques can be used to track changes in brain volume. We aimed to determine whether treatment in chronic liver disease altered brain size. The study group comprised nine patients with cirrhosis (7 Child's grade B and 2 Child's grade C).

Changes in brain size with treatment in patients with hyper- or hypothyroidism.

Background And Purpose: Although neuropsychological symptoms and signs are common in thyroid disease, their organic substrate is unknown. We performed brain MR imaging in patients with hyperthyroidism or hypothyroidism before and after treatment and correlated the results with hormonal markers.

Methods: Eight patients with hyperthyroid disease and three with hypothyroid disease underwent imaging within 1-2 days of a thyroid hormone testing.

Contrast-enhanced magic-angle MR imaging of the Achilles tendon.

Objective: The objective of this study was to image the Achilles tendon with MR imaging at the magic angle (the long axis of the tendon at 55 degrees relative to the direction of the main static magnetic field [B(0)]) to detect signal from the tendon, to measure the T1 of the tendon, and to determine patterns of contrast enhancement in control subjects and patients.

Conclusion: Mean T1 values of 311 +/- 30 msec (at 1.0 T) were found in six volunteers.

Change in brain size during and after pregnancy: study in healthy women and women with preeclampsia.

Background And Purpose: Qualitative decreases in maternal brain size have been observed late in pregnancy. The aim of this study was to quantitatively evaluate changes to the maternal brain during and after healthy pregnancy and to compare these changes with those observed in cases of preeclampsia.

Methods: Three-dimensional T1-weighted MR volume images were obtained in nine healthy participants before and after delivery.