Shape of the thecal sac: L3/4 interspace compared with L4/5*
نویسندگان
چکیده
منابع مشابه
CT myelography of subarachnoid leukemic infiltration of the lumbar thecal sac and lumbar nerve roots.
Spinal nerve root or cauda equina compression in patients with leukemia is often secondary to extradural chloroma [1]. We present the CT myelographic findings of an intradural mass and lumbar nerve root enlargement secondary to leukemic infiltration of the lumbar subarachnoid space and nerve roots. This form of leukemic involvement of the nervous system has not previously been demonstrated with...
متن کاملCT myelography of a fragment of a lumbar disk sequestered posterior to the thecal sac.
The radiologic manifestations of lumbar disk herniation as seen on myelography, postmyelography CT, and, more recently , surface-coil MR have been well described (1-3). CT and MR findings of far lateral , extraforaminal disk herniation also have been reported (4]. Migratory fragments typically settle anterior and/or lateral to the thecal sac (5]. We report a case in which the sequestered migrat...
متن کاملQuantitative assessment of gestational sac shape: the gestational sac shape score.
OBJECTIVE To develop a quantitative method for characterizing gestational sac shape. METHODS Twenty first-trimester gestational sacs in normal pregnancies were studied with three-dimensional (3D) ultrasonography. The 3D coordinates of surface-point sets were obtained for each sac using 30-, 15- and six-slice sampling. Cubic spline interpolation was used with the 15- and six-slice surface-poin...
متن کاملdeterminant of the hankel matrix with binomial entries
abstract in this thesis at first we comput the determinant of hankel matrix with enteries a_k (x)=?_(m=0)^k??((2k+2-m)¦(k-m)) x^m ? by using a new operator, ? and by writing and solving differential equation of order two at points x=2 and x=-2 . also we show that this determinant under k-binomial transformation is invariant.
15 صفحه اولthe evaluation of language related engagment and task related engagment with the purpose of investigating the effect of metatalk and task typology
abstract while task-based instruction is considered as the most effective way to learn a language in the related literature, it is oversimplified on various grounds. different variables may affect how students are engaged with not only the language but also with the task itself. the present study was conducted to investigate language and task related engagement on the basis of the task typolog...
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ژورنال
عنوان ژورنال: Anaesthesia
سال: 2009
ISSN: 0003-2409,1365-2044
DOI: 10.1111/j.1365-2044.2008.05684.x