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MR imaging of the mamillothalamic tract
- Source :
- Radiology. 207:593-598
- Publication Year :
- 1998
- Publisher :
- Radiological Society of North America (RSNA), 1998.
-
Abstract
- To demonstrate the normal and abnormal appearance of the mamillothalamic tract (MTT) on cranial magnetic resonance (MR) images.Two formalin-fixed normal human brain specimens sectioned in axial and coronal planes were used to demonstrate the normal anatomy of the MTT. MR images were obtained in 32 volunteers. Proton-density-weighted coronal and axial pulse sequences were used. The images were evaluated for visualization quality and size and signal intensity of the MTTs in correlation with the specimens. Abnormal MTTs were identified on cranial MR images in two patients, and the imaging findings were analyzed. The clinical history of the patients was also reviewed to determine the effect of these findings on patient care.Normal MTTs were easily identified on MR studies of cadaveric brains and of the brains of the human volunteers. On MR images, normal MTTs were commonly symmetric in appearance, with signal intensity equal to that of other normal fiber tracts. The abnormal MTTs showed high signal intensity on images obtained with a long repetition time or asymmetric volume loss and were associated with atrophy of the ipsilateral mamillary body.Normal MTTs are readily visible on conventional MR images. Abnormality of the MTT is a very subtle finding but may be a marker of a limbic system abnormality.
- Subjects :
- Adult
Male
Mammillary Bodies
Epilepsy, Complex Partial
Thalamus
Reference Values
Cadaver
medicine
Humans
Radiology, Nuclear Medicine and imaging
Mamillothalamic tract
medicine.diagnostic_test
Normal anatomy
business.industry
Magnetic resonance imaging
Human brain
Anatomy
Middle Aged
Magnetic Resonance Imaging
Mr imaging
medicine.anatomical_structure
Coronal plane
Female
Atrophy
business
Cadaveric spasm
Subjects
Details
- ISSN :
- 15271315 and 00338419
- Volume :
- 207
- Database :
- OpenAIRE
- Journal :
- Radiology
- Accession number :
- edsair.doi.dedup.....681854e495d45334df8763a5cd6e38ac