Feb 14, 2025 · Basal ganglia and thalamus signal abnormalities occur in a wide variety of conditions. Ischemia/hypoxia, metabolic disorders and toxins, particularly those that affect the respiratory chain, have a predilection for affecting the basal ganglia as they are highly metabolically active.

Apr 4, 2019 · The lentiform nucleus, a triangular-shaped structure on axial imaging, consists of the globus pallidus medially and the putamen laterally. The lentiform nucleus with the caudate nucleus constitutes the basal ganglia. The basal ganglia represent a large collection of nuclei that constantly modifies movement along with the cerebellum. The motor ...

Dec 18, 2024 · Basal ganglia calcification is common and is seen in approximately 1% of all CT scans of the brain, depending on the demographics of the scanned population.

Many diseases may present as basal ganglia abnormalities. Magnetic resonance imaging (MRI) and computed tomography (CT) – to a lesser degree – allow for detection of basal ganglia injury.

Nov 10, 2024 · MRI. The basal ganglia are normally isointense to the cortex. As the globus pallidus has more myelin and calcium deposition compared with the putamen, it usually appears slightly more T1 hyperintense 5. When calcification exceeds 30%, there is signal loss in …

MRI reveals bilateral high T2 signal within the central basal portions of the brain (Figs. 39 and 59), primarily at the thalami and basal ganglia, hippocampi and amygdala, as well as the dorsal midbrain and pons. The signal abnormality may extend into the adjacent portions of the cerebellum, brainstem and insulae, along with a mild mass effect.

This makes ultra-high field MRI especially beneficial for detailed imaging of structures with altered magnetic susceptibility, such as the basal ganglia, myelin, and blood, which is also important for ultra-high field high-resolution fMRI imaging.

This review of basal ganglia and thalamic anatomy should serve as an introductory guide for radiology trainees and neuroradiologists interested in basal ganglia and thalamus function, and emerging functional neurosurgery applications in these regions.

Bilateral basal ganglia abnormalities on MRI are observed in a wide variety of childhood disorders. MRI pattern recognition can enable rationalization of investigations and also complement clinical and molecular findings, particularly confirming genomic …

Jan 19, 2011 · Radiologists may detect bilateral abnormalities of the basal ganglia and thalamus in different acute and chronic clinical situations, and although magnetic resonance (MR) imaging is the modality of choice for evaluation, the correct diagnosis can be made only by taking all relevant clinical and laboratory information into account.