MR appearance of gray and white matter at the cervicomedullary region.
نویسندگان
چکیده
To study the appearance of gray and white matter in the cervicomedullary region, six fresh cadavers were imaged with a 1.5-T MR scanner and then sectioned with a cryomicrotome. The pyramidal tracts, fasciculus cuneatus and gracilis, inferior olivary nuclei, supraspinal nuclei, spinal trigeminal nuclei, and medial lemnisci were identified by MR in the cervicomedullary region.
منابع مشابه
Microanatomy of the excised human spinal cord and the cervicomedullary junction examined with high-resolution MR imaging at 9.4 Tesla.
PURPOSE To study in detail the MR anatomy of the spinal cord and the cervicomedullary junction that could serve as a reference for clinical MR studies. METHODS Specimens of fresh human spinal cord and formalin-fixed cervicomedullary transition zones were imaged with a 9.4-T vertical bore magnet. Using a multisection spin-warp pulse sequence the parameters were selected to produce essentially ...
متن کاملThe MR appearance of gray and white matter in the cervical spinal cord.
Artifacts that can distort the appearance of the cervical spinal cord are caused by data truncation during MR image reconstruction. We used a phantom and then correlated anatomic sections with MR images in cadavers and normal volunteers to evaluate the effect of truncation artifacts on the MR appearance of the spinal cord. When truncation artifacts are minimized, the gray matter and major white...
متن کاملAppearance of normal brain maturation on fluid-attenuated inversion-recovery (FLAIR) MR images.
BACKGROUND AND PURPOSE Fluid-attenuated inversion-recovery (FLAIR) MR imaging is widely accepted for brain diagnoses, though to our knowledge no description of the MR FLAIR appearance of the normal infantile brain has been published. The purpose of this study was to investigate the appearance of normal infantile brain maturation on FLAIR MR images. METHODS FLAIR images were obtained in 52 chi...
متن کاملMAP–Based Framework for Segmentation of MR Brain Images Based on Visual Appearance and Prior Shape
We propose a new MAP-based technique for the unsupervised segmentation of different brain structures (white matter, gray matter, etc.) from T1-weighted MR brain images. In this paper, we follow a procedure like most conventional approaches, in which T1-weighted MR brain images and desired maps of regions (white matter, gray matter, etc.) are modeled by a joint Markov-Gibbs Random Field model (M...
متن کاملNormal myelination of the pediatric brain imaged with fluid-attenuated inversion-recovery (FLAIR) MR imaging.
BACKGROUND AND PURPOSE As in adult imaging, FLAIR can be applied to pediatric brain imaging, and this requires an appreciation of the normal pediatric brain appearance by FLAIR imaging. The purpose of this study was to describe the MR appearance of the brain in normal infants and young children as demonstrated by fluid-attenuated inversion-recovery (FLAIR) MR imaging. METHODS We retrospective...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- AJNR. American journal of neuroradiology
دوره 10 5 شماره
صفحات -
تاریخ انتشار 1989