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At least 19 recordsLinked to original sources
PubMed1979

Two-dimensional echo-encephalography. 2. Clinical use and reliability of two-dimensional echo-encephalography in neurology and neurosurgery.

More than two hundred patients with intracranial lesions were examined by means of B-scan echo equipment specially adapted for the detectionof weak reflections. An impression of the accuracy of the method is demonstrated by the results obtained in those patients where the diagnosis had been verified at surgery or autopsy. It appeared that B scanning is a quite reliable diagnostic method. It was found that intracranial tumours showed typical echo-patterns. Furthermore, we found that B scanning may be an important diagnostic aid in follow-up examinations of patients. However, the ultrasound technique as used by us has also a restriction: it is unsuited for the estimation of the precise extension of pathological areas and for the estimation of the nature of pathology.

Brain Diseases↗
PubMed1996

Adrenoleukodystrophy indicated by abnormal electro-encephalography.

An 8 year old boy with adrenoleukodystrophy and his asymptomatic brother, both with abnormal electro-encephalography as the initial sign of adrenoleukodystrophy, are reported. After suffering from aseptic meningitis caused by Echo virus 30, the first case was suspected of having a complication of meningitis because of persistent abnormal electro-encephalography (i.e. slow wave bursts in the occipital region). This patient was finally diagnosed as having adrenoleukodystrophy because of the increased level of very long chain saturated fatty acids, and typical occipital lesions demonstrated by magnetic resonance imaging and computed tomography. Dietary therapy was tried, but the course was progressive. The brother's electro-encephalography was also abnormal and so was diagnosed as having asymptomatic adrenoleukodystrophy because of an increased level of very long chain saturated fatty acids, although brain magnetic resonance imaging was normal. Abnormal electro-encephalography can therefore be an initial sign of adrenoleukodystrophy even if magnetic resonance imaging shows no abnormality in the brain.

Adrenocorticotropic Hormone↗
PubMed1982

[Reconstruction in coronal and sagittal planes of CT scans compared with two-dimensional echo-encephalography in neonates and infants (author's transl)].

Two-dimensional echo-encephalography using the fontanelle and open sutures as an "acoustic window" for the skull has offered a new possibility of investigating at least in part the morphological conditions inside the skull. We considered it necessary to examine the value of these new methods by checking the sonographic findings by means of cranial CT. The possibility of modern data processing when employing CT enables the visualisation of the coronal and sagittal planes which can be covered by echo-encephalography. Since it involves low stress for the patient and since it is a practicable method, two-dimensional echo-encephalography is very suitable for screening and for checking on the status of the patient. Since CT can visualise the overall situation inside the skull with greater accuracy, it remains indispensable as a basic examination method, depending on the overall clinical signs and symptoms.

Cranial Sutures↗
PubMed1978

[Long-term follow-up study of the absorption of gas after encephalography in dilated intracranial cerebrospinal fluid spaces (author's transl)].

The absorption of gas after encephalography in different groups of patients was investigated in a long-term follow-up study. Group I (11 patients) showed no pathological findings in the encephalogram. Group II (8 patients) had encephalographic signs of diffuse cerebral atrophy. Group III (7 patients) demonstrated in the encephalogram characteristics of normal pressure hydrocephalus with variously located blocks of air in the subarachnoid space. In group I the gas located in the subarachnoid space had usually disappeared after 24 h, in some cases after 72 h. In group II the pattern of resorption was basically similar, although in one case cortical air could be seen at 96 h. In group III the absorption of air from the subarachnoid space began after 72 h in radiological relevant amounts. In none of the cases of group III could similar short times of resorption be seen in comparison to group I. It is considered that these two groups can be clearly distinguished from each other in the duration of resorption of air from the subarachnoid space. The importance of encephalography as a pathophysiological tool for investigation of both the disturbed resorption and circulation of the cerebrospinal fluid in normal pressure hydrocephalus is stressed.

Absorption↗
PubMed1975

Size of the intracerebral ventricles as measured with computer tomography, encephalography and echoventriculography.

Ventricular size in a total of 192 patients was determined with computer tomography (CT), encephalography (Enc) and echoventriculography (echo-VG). There was good correlation (greater than or equal to 0.80) between the values for the size of the lateral ventricles obtained with all three methods. Correlation between values for the width of the third ventricle: CT/Enc and CT/echo-VG: poor; Enc/echo-VG: good ( = 0.85). Both at computed tomography and encephalography there was poor correlation between anterior horn index and the width of the third ventricle.

Adolescent↗
PubMed1976

Encephalography using supra-occipital tapping of the cisterna magna.

A report is given of the results of supra-occipital tapping of the cisterna magna and dynamic encephalography by that route. In 72 patients with cranial hypertension this encephalography was well tolerated. Supra-occipital tapping is less dangerous than suboccipital puncture as regards the possibility of injury to the medulla. In 38 cases, the method led immediately to the diagnosis of herniation of the tonsils.

Encephalocele↗
PubMed1976

Accuracy of scanning, angiography and encephalography in posterior fossa tumors.

A material of 120 cases with posterior fossa tumors examined with scanning, vertebral angiography and encephalography was reviewed to determine the value of the information and accuracy these methods provide. Encephalography was the most accurate procedure (98% positive) compared to angiography (81%) and scanning (44%).

Brain Neoplasms↗
PubMed1977

Computerized tomography and encephalography.

This preliminary paper compares encephalography and computed tomography as regards the duration of the examinations, the technical difficulties and their diagnostic values. Some examples are reported to demonstrate the complementary importance of the two techniques.

Brain↗
PubMed1979

The value of lorazepam in gas encephalography: a preliminary report.

Lorazepam is of value in the performance of gas encephalography. Given with judicious and individualized doses of IV narcotic, it has significantly lessened the morbidity of this examination. We have been particularly impressed with the lack of unpleasant memories for the procedure. The quality of the examination was good through the patients had to be reminded, because of the amnestic effects of the drug, to hold still throughout the 6-s exposure needed for polytomography.

Aged↗
PubMed1978

CT scan and gas encephalography in diagnosis of arachnoid cyst and epidermoid cyst of Galen's cistern.

The CAT scan is insufficient to make the differential diagnosis between an arachnoid cyst and an epidermoid cyst in the cistern of Galen. Gas encephalography is necessary. This procedure reveals arachnoid cysts of the commmunicating type, but is insufficient in distinguishing between an epidermoid cyst and a non-communicating arachnoid cyst. In this situation, histograms of the absorption values in each section of the lesion may be helpful for the diagnosis.

Arachnoid↗
PubMed1970

Alterations in lumbar cerebrospinal fluid protein during air encephalography.

A significant fall occurred in the protein content of successive specimens of lumbar cerebrospinal fluid (C.S.F.) withdrawn during the course of air encephalography in 57% of cases. No correlation was found between the fall in the protein concentration and the total volume of air injected or the total volume of C.S.F. withdrawn, but the size of the fall was greater when the initial lumbar C.S.F. protein concentration was raised. The importance of taking specimens for routine laboratory analysis before the injection of any air is emphasized.

Adolescent↗
PubMed1974

Differential cellular increase in cerebrospinal fluid after encephalography in mentally retarded patients.

The behaviour of the CSF cells during gas encephalography (GEG) with O(2), N(2)O, and halothane is poorly known in cerebral developmental disorders. One hundred and fifty CSF samples taken during pneumoencephalography from 75 mentally retarded patients were examined cytologically by the millipore technique with Papanicolaou staining. The results were processed automatically. An approximately 25-fold increase in CSF cells (P<0·001), mainly meningeal, reticulohistiocytic, and monocytic types, was found to occur. The cortical gas filling rate had a positive correlation (P<0·001) with the increase of number of CSF cells. There were no significant differences between the cellular changes in different cerebral disorders. Thus, though the irritant effect of GEG gives a rich cell yield, diagnostic atypical cells in developmental disorders of the central nervous system probably rarely exfoliate into the lumbar CSF.

Adolescent↗
PubMed1977

Retinal haemorrhage as a complication of gas encephalography and gas myelography. Prospective study using oxgen gas with a discussion of pathogenetic mechanisms.

Seventy patients, submitted to oxygen encephalography and oxygen myelography, were examined by retinal funduscopy to establish the incidence of intraocular haemorrhages, a complication reported to be frequent by other investigators. We did not discover any retinal haemorrhages. Pathogenetic factors influencing intracranial or intraocular venous pressure or both are discussed, particularly the effect due to different technical procedures during the examination, and the type of anaesthesia used.

Adolescent↗
PubMed1977

Gamma-encephalography in the diagnosis of subdural effusions in infancy and childhood.

The results of the use of gamma-encephalography (GEG) as a diagnostic tool in a group of 28 patients with subdural effusions and 46 membranes confirmed at surgery are presented. 27 patients were submitted to bilateral surgical expolorations and 1 was unilaterally explored. Positive GEG: membranes were present in 34, in 8 the test was nonconclusive and there were 4 false-negatives. Negative GEG: membranes were absent in 6, 1 case was nonconclusive and 2 were false-positive tests. Therefore, from 28 patients with 46 membranes the GEG was correct in two thirds of the cases, it was nonconclusive in 9 cases and the image did not confirm the surgical findings in 6 cases (false-positive or false-negative). The results suggest that the presence of a medium or thick membrane almost always results in a positive image, whereas the presence of a thin membrane leads to a nonconclusive result or in some cases a false-negative one. The general data from the literature correlates well with the present series.

Child, Preschool↗
PubMed1976

Catheter technique for encephalography.

A catheter technique for encephalography utilizing a polyethylene catheter is described. The advantages are principally that it reduces the possibility of needle displacement during examination and thus the danger of extra-arachnoid injection of air.

Catheterization↗