Gradient recalled echo MR imaging of the jugular foramen.
نویسندگان
چکیده
Axial T1-weighted spin-echo MR images have not proved to be effective in identifying normal structures in the jugular foramen. By correlating cryomicrotomic sections and axial T1-weighted gradient recalled echo images, we identified the neural and vascular contents of the jugular foramen. Further work with gradient recalled echo images is needed to determine the signal characteristics of jugular foraminal lesions.
منابع مشابه
Magnetic susceptibility artifacts in gradient-recalled echo MR imaging.
Artifacts related to magnetic susceptibility differences between bone and soft tissue are prevalent on gradient-recalled echo images, particularly when long echo delay times are used. These susceptibility artifacts spatially distort and artifactually enlarge bone contours. This can alter the apparent shape of the spinal canal and exaggerate the degree of spinal stenosis seen in patients with ce...
متن کاملVery Fast T2* Imaging by Using Improved Echo-Shifted Gradient-Recalled-Echo (iESGRE)
INTRODUCTION Echo-Shifted Gradient-Recalled-Echo (ESGRE) can be used to rapidly acquire MR images with strong T2* sensitivity [1, 2]. In this approach, excited spins are precessing over multiple TRs before each gradient echo is recalled. Therefore, the effective T2* weighting period in ESGRE is longer than one TR (TE>TR). This property makes it attractive in various clinical applications to sig...
متن کاملMagnetic resonance imaging of the jugular foramen.
The jugular foramen in normal volunteers was studied with 1.5 T magnetic resonance (MR) systems in 3-mm-thick head- and surface-coil images. Anatomic sections through cadaver heads were correlated with the MR images to identify the jugular bulb and the course of cranial nerves IX-XI. Sagittal images were more useful than coronal or axial to show the course of these nerves through the skull base...
متن کاملDetailed MR imaging anatomy of the cisternal segments of the glossopharyngeal, vagus, and spinal accessory nerves in the posterior fossa: the use of 3D balanced fast-field echo MR imaging.
BACKGROUND AND PURPOSE The cisternal segments of the lower cranial nerves (CNs) adjacent to the jugular foramen (JF) are difficult to identify reliably by routine MR imaging. We performed a 3D balanced fast-field echo imaging technique (3D-bFFE) to obtain detailed anatomy of the cisternal segments of CNs IX, X, and XI. MATERIALS AND METHODS 3D-bFFE was used to image the cisternal segments of ...
متن کاملComparison of spin-echo and gradient-echo T1-weighted and spin-echo T2-weighted images at 3T in evaluating term-neonatal myelination.
SUMMARY A prior clinical report of 3T MR imaging in subsequently healthy very premature neonates imaged at term-equivalent age found that both gradient recalled-echo-T1WI and spin-echo-T2WI showed higher rates of myelinated structures, compared with spin-echo-T1WI. The current study set out to assess those rates on the same sequences at 3T in term neonates and thus consisted of 16 term neonates...
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 9 4 شماره
صفحات -
تاریخ انتشار 1988