Neuroradiology 0028-3940

Hahn, F.; Chu, Wei-Kom

doi: 10.1007/BF00342674pmid: 6504308

234 26 26 6 6 F. J. Hahn Wei-Kom Chu Department of Radiology University of Nebraska Medical Center Omaha, Nebraska Summary Newer CT scans have greatly enhanced oculometric research and made it possible to measure ocular dimensions. With these measurements, ocular volume can be more accurately estimated to understand its relationship with age and sex. One hundred CT orbit scans with presumed normal eyes were used for the data base. The mean values and normal variations of ocular volumes at various ages in both sexes are presented. Rapid growth of the eyeball was noted during the first 24 months of age. It reached its peak between the ages of 18 and 30 years of age, after which there was a reduction. Results may be of help in recognizing eye abnormalities such as microophthalmus and macrophthalmia.

Ruscalleda, J.; Rovira, A.; Guardia, E.; Juan, M.

doi: 10.1007/BF00342675pmid: 6504309

234 26 26 6 6 J. Ruscalleda A. Rovira E. Guardia M. de Juan Department of Neuroradiology, Hospital San Pablo University Autónoma Barcelona Spain Summary We present our experience of the usefulness of high definition computed tomography (HDCT) in 30 cases of isolated intraspinal pathology (12 extramedullary and 18 intramedullary cases). The results are assesed in comparison to myelography.

LaBerge, Jeanne; Brant-Zawadzki, M.

doi: 10.1007/BF00342676pmid: 6504310

234 26 26 6 6 Jeanne M. LaBerge M. Brant-Zawadzki Department of Radiology University of California San Francisco Summary The CT appearance of eight cases of culture-positive spinal tuberculosis is reviewed. Three patients had single level vertebral involvement, while five others showed multilevel involvement. In seven of eight cases, paraspinal soft tissue involvement was seen. In two, the process caused neurologic symptoms by extending into the epidural space. In three patients the paraspinal extension was not only local, but spread along multiple levels. The CT appearance can be highly suggestive of TB in cases where the diagnosis has not been suspected. In cases where the diagnosis is suspected by plain films, CT can display unsuspected extension of the disease and be helpful in needle localization for aspiration.

Kaiser, M.; Capesius, P.; Roilgen, A.; Sandt, G.; Poos, D.; Gratia, G.

doi: 10.1007/BF00342677pmid: 6504311

234 26 26 6 6 M. C. Kaiser P. Capesius A. Roilgen G. Sandt D. Poos G. Gratia Department of Neuroradiology Centre Hospitalier Luxembourg Luxembourg City Grand-Duchy of Luxembourg Department of Neurosurgery Centre Hospitalier Luxembourg Luxembourg City Grand-Duchy of Luxembourg Summary Computed tomography permits reliable demonstration of the spinal canal and its contents. Measurements of the sagittal diameter of the bony canal do not take into consideration size, shape and state of intraspinal soft tissue structures, i.e. the thecal sac and its own contents, epidural fat and blood circulation pattern. Three particularly illustrative cases were selected in which obvious epidural venous engorgement was visualized in association with spinal stenosis. The authors think that epidural venous stasis occuring in segmental spinal stenosis is a CT sign of clinically significant narrowing of the neural canal. Accurate recognition of the type of lumbar stenosis together with epidural blood flow alterations permits a better understanding of the existing lesions. Thus, a more precise and specific surgical approach is possible.

Schubiger, O.; Valavanis, A.; Hollmann, J.

doi: 10.1007/BF00342678pmid: 6504312

234 26 26 6 6 O. Schubiger A. Valavanis J. Hollmann Section of Neuroradiology at the Kantonsspital Aarau Switzerland Section of Neuroradiology the University Hospital Zürich Switzerland Leitender Arzt für Neuroradiologie Kantonsspital CH-5000 Aarau Switzerland Summary 52 cases with pathologic lesions in the intervertebral foramen, studied with CT, are analyzed. The most frequent lesions are intraforaminal disc herniations. These are characterized by their hyperdensity in comparison to the dural sac (34 of 34 cases) and their broad contact with the intervertebral disc space (31 of 34 cases). Foraminal size and contour are usually normal. In contradistinction to disc herniations, benign tumors often show bone erosion of the pressure-type with enlargement of the foramen. Bone infiltration was seen only in malignant lesions and in the single case of Echinococcosis. Preoperative diagnosis of vascular lesions which present with foraminal enlargement is most important for the choice of the appropriate operative approach. Correct CT diagnosis of such vascular lesions is only possible with dynamic CT.

Bradac, G.; Kaden, B.; Oppel, F.; Hirner, A.

doi: 10.1007/BF00342679pmid: 6504313

234 26 26 6 6 G. B. Bradac B. Kaden F. Oppel A. Hirner Neuroradiological department Klinikum Steglitz Free University of Berlin Berlin Germany Neurosurgical department Klinikum Steglitz Free University of Berlin Berlin Germany Surgical department Klinikum Steglitz Free University of Berlin Berlin Germany Summary Patients with occlusion of ICA have been reviewed. Further ischemic attacks have been observed in 25–30%. The cause of the ischemia was generally embolization by way of collateral circulation through the ECA. Treatment of these patients is considered.

Marliani, Anna; Andreoli, A.; Testa, C.

doi: 10.1007/BF00342680pmid: 6504314

234 26 26 6 6 Anna Federica Marliani A. Andreoli C. Testa Neuroradiological Department Bellaria Hospital Bologna Italy Neurosurgical Department I Bellaria Hospital Bologna Italy Summary Angiography is indispensable for the selection of appropriate candidates for extra-intracranial arterial bypass (E.I.A.B.). It allows the visualization of ICA and/or MCA occlusion or inaccessible stenosis which are considered indications for E.I.A.B. Complete angiographic study also gives information about other vascular lesions and the morphology of ECA and its branches as well as collateral circulation. Moreover angiography evaluates the result of bypass. The methods of the preoperative and postoperative angiography are described.

Zimmerman, R.; Grossman, R.; Goldberg, H.; Lynch, Roberta; Levine, R.; Samuel, L.

doi: 10.1007/BF00342681pmid: 6390247

234 26 26 6 6 R. A. Zimmerman R. I. Grossman H. I. Goldberg Roberta Lynch R. Levine L. Samuel Department of Radiology of the Hospital of the University of Pennsylvania Philadelphia Pennsylvania Summary Sixty-nine patients with 91 separate abnormal findings were studied by both intra-arterial digital subtraction arteriography (ADSA) and conventional film screen subtraction arteriography (CFSA) in the same projection, with the same magnification. Digital subtraction arteriography has distinct advantages over CFSA in the form of reduced contrast utilization, better patient tolerance of arteriography because of reduced contrast concentration, superior contrast resolution, and rapid, on-line visualization of the abnormalities. Digital subtraction arteriography is limited by its availability in only a single plane, by decreased spatial resolution which affected the image quality for intracranial blood vessels at an image intensifier (I.I.) field of 12 inches, and by relatively limited field of view both intracranially and extracranially for I. I. fields of 6 and 9 inches.

Kingsley, D.; Harwood-Nash, D.

doi: 10.1007/BF00342682pmid: 6504315

234 26 26 6 6 D. P. E. Kingsley D. C. F. Harwood-Nash Department of Radiology, Division of Neuroradiology and Special Procedures The Hospital For Sick Children Toronto Ontario Canada Department of Neuroradiology The London Hospital Whitechapel E1 1BB London England Summary The radiological features of 10 cases of primitive neuroectodermal tumour (primary cerebral neuroblastoma) are presented. The angiographic and CT appearances were similar to those previously described in the literature. However, not previously documented was evidence on plain skull radiographs and CT scans of thinning and expansion of the overlying vault in 6 of the 10 cases.

Levin, S.; Robinson, R.; Aicardi, J.; Hoare, R.

doi: 10.1007/BF00342683pmid: 6504316

234 26 26 6 6 S. Levin R. O. Robinson J. Aicardi R. D. Hoare Guys Hospital London Hopital des Enfants Malades Paris Summary The appearance of C. T. of the head in 11 cases of the linear sebaceous naevus syndrome are presented. From these it is argued that the pathology represents a disorder of neuronal migration and organisation rather than differentiation. Since three of the cases had evidence of CNS tumour in addition to two in the literature, it would appear that a further aspect of this disorder is a failure of growth constraint. This is paralleled by a similar tendency in the skin lesion which should be considered premalignant. Normal intelligence is rare in this condition and co-exists only with a normal C. T. scan. The early onset of fits is not necessarily associated with subsequent mental handicap.