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Publication
Featured researches published by Gustaf Bergstrand.
Journal of Computer Assisted Tomography | 1985
Gustaf Bergstrand; Mats Bergström; Bo Nordell; Freddy Ståhlberg; A. Ericsson; Anders Hemmingsson; Göran Sperber; Karl-Åke Thuomas; Bo Jung
This is a preliminary investigation of the cerebrospinal fluid (CSF) spaces using cardiac gated magnetic resonance imaging. A variation of intensity of the signal from the cerebral aqueduct is demonstrated during the cardiac cycle. The pattern of this variation suggests pulsatile CSF flow. Calculations that have been verified by phantom measurements show that CSF flow rates less than I mm/s may be detectable. Magnetic resonance may therefore offer a new method for the demonstration and measurement of CSF flow.
Cephalalgia | 1987
Jan Hannerz; Kaj Ericson; Gustaf Bergstrand
Thirteen patients with cluster headache in an active stage were investigated with orbital phlebography. About 60% of the patients showed pathologic changes on the phlebograms, such as changes in the appearance of the superior ophthalmic vein. Five patients had pathologic changes on both sides and three patients on one side only. All patients with unilateral pathologic findings on orbital phlebography had the attacks on the same side. The phlebographic findings in these patients with cluster headache were very similar to those of patients with the Tolosa-Hunt syndrome. There is also some similarity in the symptoms in the two disorders. It has previously been suggested that the Tolosa-Hunt syndrome is caused by venous vasculitis, and the present findings to some extent support the idea that cluster headache may have the same etiology.
Cephalalgia | 1987
Jan Hannerz; Kaj Ericson; Gustaf Bergstrand
A 62-year-old man with ankylosing spondylitis and with a 3-year history of chronic paroxysmal hemicrania is presented. Because of his ankylosing spondylitis naproxen was prescribed; this decreased the attacks of headache to about 50%. However, treatment with indomethacin and steroids eliminated the attacks completely, the former drug in 24 h but only when the drug was taken; the latter drug was completely effective after a week but with an effect that lasted half a year after the medication was stopped. Orbital phlebography showed changes similar to those previously observed in patients with Tolosa-Hunt syndrome and cluster headache. Venous vasculitis thus seems to be associated with all three disorders and may be a factor of etiologic significance.
Cephalalgia | 1986
Jan Hannerz; Kaj Ericson; Gustaf Bergstrand
The Tolosa-Hunt syndrome is characterized by recurrent periods of painful ophthalmoplegia, dramatically ameliorated by steroid treatment. In half of the cases orbital phlebography shows characteristic changes. Ninety-six patients with orbital pain characteristic of the Tolosa-Hunt syndrome were submitted to orbital phlebography regardless of the existence of other symptoms. A pathologic phlebogram with changes typical of the Tolosa-Hunt syndrome was found in 50 patients. In 17 of these 50 patients the symptoms consisted of orbital pain only and no ophthalmoplegia. Twenty patients had pain and ipsilateral decrease of vision but no ophthalmoplegia, and 13 had painful ophthalmoplegia. Of 41 patients treated with steroid medication 39 responded dramatically with regard to the pain. Earlier findings indicate that the phlebographic changes are due to venous vasculitis, which thus may cause irreversible visual impairment but also chronic headache without ophthalmoplegia. It is concluded that the Tolosa-Hunt syndrome may be only one manifestation of a not uncommon disease.
Journal of Computer Assisted Tomography | 1982
Gustaf Bergstrand; M. Bergström; Lars Eriksson; Göran Edner; Lennart Widén
Five patients with cerebrospinal fluid (CSF) rhinorrhea were investigated with computed tomography (CT) and positron emission tomography (PET) to localize the site of a CSF fistula. After intrathecal injection of 10 MBq of 68Ga-EDTA, radioactivity was demonstrated in the basal cisterns. In three cases, the site of the fistula was visualized with PET. It is not always possible to demonstrate a CSF leakage with CT cisternography (CTC) using metrizamide, particularly in cases with minute fistulas or intermittent CSF rhinorrhea. With further experience and improved PET techniques, it may be possible to detect even very small fistulas.
Journal of Computer Assisted Tomography | 1979
K. Ericson; Gustaf Bergstrand; Bo Levander
Twenty-eight subdural hematomas in 24 patients were examined by angiography and computed tomography (CT). The angiographic appearance of the hematomas was classified as either crescentic, lentiform, or transitional. The attenuation value of the hematomas was calculated from the CT scans. The mean attenuation of crescentic hematomas (13.8 EMI units--EU: 500 scale) was considerably lower than those of lentiform (21.7 EU) and transitional (19.8 EU) hematomas. The crescentic and transitional hematomas were either subacute or chronic, the chronic crescentic hematomas having an attenuation value at or around serum level. The lentiform hematomas were all more than 24 days old. The relatively high attenuation in chronic lentiform and transitional hematomas was probably caused by rebleeding, and the shape indicates enlargement of the hematomas after membrane formation has occurred. In the chronic, low attenuation crescentic hematomas, no recent bleed and no enlargement had occurred.
Neuroradiology | 1983
Donatella Tampieri; Gustaf Bergstrand
SummaryTen patients were studied with CT. In order to achieve consistent and reproducible CT slices an external helmet fixation system was used. Certain well defined cerebral structures were chosen as anatomical landmarks and their relationship to the skull determined with the patient in supine, lateral and prone positions. No displacements of brain structures could be observed. The results show the feasibility of using the same coordinates for intracranial structures at CT and at operation irrespective of the position of the patients head at these procedures. Four of these patients were examined after lumbar intrathecal administration of 5ml metrizamide (200mgJ/ml). This small amount of positive contrast does not seem to influence on the position for the brain.
The Journal of Nuclear Medicine | 1984
Stig A. Larsson; Gustaf Bergstrand; Hans Bergstedt; Jan Berg; Olga Flygare; Per-Olof Schnell; Nils Andersson; Curt Lagergren
American Journal of Neuroradiology | 1983
Gustaf Bergstrand; S Larsson; M Bergström; L Eriksson; G Edner
The Journal of Nuclear Medicine | 1984
Stig A. Larsson; Gustaf Bergstrand; H. Bergstedt; J. Berg; O. Flygare; Per-Olof Schnell; N. Anderson; Curt Lagergren