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  • 1
    Electronic Resource
    Electronic Resource
    Intracranial adenoid cystic carcinoma a case report (1983)
    Springer
    Acta neurochirurgica 69 (1983), S. 291-295 
    Details
    ISSN: 0942-0940
    Keywords: Computer tomography ; adenoid cystic carcinoma ; brain metastasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A rare case of operatively verified intracranial adenoid cystic carcinoma is reported. In this case, haematogeneous metastasis to the brain parenchyma was suspected. The computer tomography showed a large hypodense mass in the left frontal lobe. The lateral wall of the tumour was irregularly enhanced with contrast media.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401816
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  • 2
    Electronic Resource
    Electronic Resource
    A simple three-dimensional display model based on recorded CT scan films for surgical reference technical note (1984)
    Springer
    Acta neurochirurgica 71 (1984), S. 47-53 
    Details
    ISSN: 0942-0940
    Keywords: Surgical instrument ; computerized tomography (CT) ; intracranial mass lesion ; brain tumour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A simple method of making a three-dimensional display model of recorded computerized tomography (CT) scan films is presented. The reconstructed display model provides useful information as to surgical approaches to intracranial mass lesions. The actual size and three dimensional shape of a lesion and its topographical relationship to surrounding brain structures are easily grasped by directly handling this model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401150
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  • 3
    Electronic Resource
    Electronic Resource
    Microsurgical anatomy of the arteries of the pituitary stalk and gland as viewed from above (1988)
    Springer
    Acta neurochirurgica 90 (1988), S. 60-66 
    Details
    ISSN: 0942-0940
    Keywords: Microsurgical anatomy ; pituitary stalk and gland ; cerebrovascular disease ; pituitary neoplasms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The microsurgical anatomy of the arteries of the pituitary stalk and gland as viewed from above was studied in 50 adult cadaveric hemispheres using the operating microscope. There were three types of vessels to the pituitary from above: the superior hypophyseal artery originating from the internal carotid artery, the infundibular artery from the posterior communicating artery, and the prechiasmal artery from the ophthalmic artery. The superior hypophyseal artery originated from the medial to posterior aspect of the internal carotid artery. The average number of vessels of the superior hypophyseal artery was 2.2 per hemisphere, and the diameter was 0.25 mm on average. The majority (76%) of superior hypophyseal arteries arose from the proximal half of the segment between the origins of the ophthalmic and posterior communicating arteries of the internal carotid artery. The infundibular artery originated mainly from the medial side (69%) of the posterior communicating artery. Its diameter was 0.22 mm, and number 0.23 per hemisphere. The number of prechiasmal arteries was 0.06 per hemisphere. As a result, there were on average 2.5 vessels per hemisphere, totally 5 per brain, with the average diameter 0.25 mm, supplying the pituitary stalk and gland from above. The clinical application of these anatomical data to the diagnosis and treatment of suprasellar tumours and carotidophthalmic aneurysms is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01541268
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  • 4
    Electronic Resource
    Electronic Resource
    New radiolucent head fixation made of engineering plastics for intraoperative CT scanning (1994)
    Springer
    Acta neurochirurgica 127 (1994), S. 121-123 
    Details
    ISSN: 0942-0940
    Keywords: Instrumentation ; head fixation ; intraoperative CT ; open neurosurgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A newly developed head fixation for intraoperative computerized tomographic (IOCT) scanning is presented. The system is developed based on the head holder of multipurpose head frame and is made of two kinds of advanced engineering material; carbon fiber reinforced plastic for head holder and frames, polyamide-imide polymer for joints, screws, and head pin. Clinical tests including autoclaving and sterilization were performed and revealed all materials had sufficient strength for clinical use. This fixation system enables us to increase the efficacy of IOCT scanning during open-field neurosurgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01808559
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  • 5
    Electronic Resource
    Electronic Resource
    Indications and limitations for CT-guided stereotaxic surgery of hypertensive intracerebral haemorrhage, based on the analysis of postoperative complications and poor ability of daily living in 158 cases (1993)
    Springer
    Acta neurochirurgica 125 (1993), S. 27-33 
    Details
    ISSN: 0942-0940
    Keywords: CT-guided stereotaxic surgery ; postoperative complications ; indications ; limitations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors have studied the indications and limitations for computerized tomography (CT) -guided stereotaxic surgery (CTGS Surgery) of hypertensive intracerebral haematomas (ICH), based on the analysis of 158 patients in our institutions. Of 158 patients, 120 had putaminal haemorrhage, 21 thalamic, 14 subcortical and 3 in other locations. The patients ranged in age from 37 to 82 years (average 60). Haematoma volume ranged from 8 to 140 ml (average 43). Eleven patients in the series worsened postoperatively because of rebleeding in 6 cases, cerebral infarction in 2, and unknown causes in the remaining 3 cases. Seven of the 11 patients pre-operatively had untreated hypertension and 3 had mild liver dysfunction without major haemorrhagic tendency. Most postoperative complications were seen in older patients and in those with severe neurological deficit or chronic disease. All these cases ended in poor outcome. From our study, we propose three indications for CTGS Surgery: absolute, aggressive and passive indications. The absolute indication is applied to those who would have been operated on by conventional open surgery. The aggressive indication is for those with mild neurological deficit so that early rehabilitation can be started to regain higher cerebral function. The passive indication is for elderly patients and those with severe neurological deficit or chronic disease. This indication must be decided carefully because poor outcome is likely.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401824
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  • 6
    Electronic Resource
    Electronic Resource
    Mortality study of patients with subarachnoid haemorrhage at University hospitals and their affiliated hospitals in Japan (1982)
    Springer
    Acta neurochirurgica 63 (1982), S. 175-183 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This study was undertaken to examine the differences in aneurysm statistics between University hospitals where subacute or chronic patients are primarily treated and University-affiliated hospitals where both acute and chronic cases are also admitted. In each hospital group, the transition of the statistics in the last decade was studied. The purpose of this study was also to see if any conclusion could be drawn regarding the surgical treatment of acute cases. The death rate for all aneurysm cases admitted is 8% at University hospitals, whilst that at affiliated hospitals is roughly 30% during the 1970s. The operative death rate at the University hospitals is 3%, whilst that at affiliated hospitals is 16% which improved at one affiliated hospital to 8% in the 1980–1981 period. Morbidity also improved in the latest series in the affiliated hospital. These improvements are considered to be due to the change of operative and postoperative policies for acute cases to : limited surgical indications for grade IV patients, extensive cisternal clot removal at the time of surgery, and oral administration of Ticlopidine, a new antiplatelet agent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01728870
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  • 7
    Electronic Resource
    Electronic Resource
    Occipital epidural abscess with sinus phlebitis due to chronic osteomyelitis (1982)
    Springer
    Acta neurochirurgica 66 (1982), S. 207-211 
    Details
    ISSN: 0942-0940
    Keywords: Occipital osteomyelitis ; epidural abscess ; staphylococcus epidermides ; sinus phlebitis ; intracranial pressure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report an unusual case of occipital osteomyelitis originating from an old scalp wound, and causing subsequent sinus thrombosis and an epidural abscess. This is the first such case reported. The mechanism of the symptoms and the literature are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02074507
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  • 8
    Electronic Resource
    Electronic Resource
    Cranioplasty with a frozen and autoclaved bone flap (1990)
    Springer
    Acta neurochirurgica 102 (1990), S. 38-41 
    Details
    ISSN: 0942-0940
    Keywords: Autoclaving ; autogenous bone graft ; cranioplasty ; freezing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 27 cases of cranioplasty with autogenous bone grafts stored in a deep-freezer and autoclaved before use are reported. The results of follow-up for an average period of one year were satisfactory from the standpoint of brain protection and cosmetic reconstruction. A small area of absorption of grafted bone was observed in two cases on the follow-up skull roentgenograms. No serious complications were seen except in one case, whose bone flap had to be removed due to an epidural abscess. Experiments revealed that deep-freezing and autoclaving had only minimal effects on bone structure, although osteocytes degenerated. Autogenous bone flap after deep-freezing is a useful material for cranioplasty but sterilization before use is indispensable. Autoclaving is a simple method for sterilization of the flap, available in any operating theatre. It does not increase the risk of postoperative complications such as infection or absorption.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01402184
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  • 9
    Electronic Resource
    Electronic Resource
    Normovolaemic induced hypertension therapy for cerebral vasospasm after subarachnoid haemorrhage (1990)
    Springer
    Acta neurochirurgica 103 (1990), S. 18-26 
    Details
    ISSN: 0942-0940
    Keywords: Cerebral vasospasm ; haemorrhagic infarction ; intracranial aneurysm ; normovolaemic induced hypertension therapy ; subarachnoid haemorrhage ; Swan-Ganz catheter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We showed that normovolaemic induced hypertension therapy was effective in reducing ischaemic symptoms attributed to cerebral vasospasm in 41 patients after subarachnoid haemorrhage. By inducing hypertension to 25% to 50% above normal systolic arterial blood pressure, we observed that in 17 of 24 cases (71%) neurological deficits improved. In four cases of haemorrhagic infarction, the blood pressure rose to over 50% of systolic arterial pressure, and a low density area was confirmed on computerized tomography (CT) scan prior to vasospasm. Induced hypertension was therefore not considered when a low density area was revealed on CT scan. Restriction of fluid input is usually a factor in producing hypovolaemia after a neurosurgical operation. Intravascular volume expansion has been reported effective in reversing ischaemic deficits. However, according to Poiseuille's equation, increasing blood volume to a state of hypervolaemia can not enhance flow. The cerebral blood flow (CBF) was raised by increasing perfusion pressure, reducing viscosity, or increasing blood vessel diameter. Intravascular volume expansion elevates not only systemic arterial pressure, but also pulmonary artery wedge pressure over 18 mmHg and cardiac index over 2.2. Since pulmonary oedema and congestive heart failure may develop, one should monitor haemodynamic parameters with the Swan-Ganz catheter as a preventive measure. We emphasize that normovolaemic induced hypertension, maintaining haemodynamics subset 1 of the comparable haemodynamic subsets, is effective in raising perfusion pressure of CBF.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01420187
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