[Cerebral angiospasm after ruptured intracraneal aneurysms. Hemodynamic and therapeutical findings].
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Adolescent↗
Biomedical subjects
U Bergvall
Publications and source records attributed to U Bergvall.
CT identification of cortical speech areas in the human brain.
In four human left cerebral hemispheres the cortical speech areas were identified, having been marked by differential color code before transverse sectioning. The results from the anatomic dissection specimens were compared with thin CT sections in normal individuals, the CT plane being aligned to the orbitomeatal plane as an external reference, and thus closely parallel to the bicommissural plane, as an internal reference. The same cortical structures were identified in the CT sections. A strategic approach to CT examination of the cortical speech areas is formulated, based on the external-internal system of reference.
Cerebral Cortex↗
Double-blind controlled trial of prostacyclin in cerebral infarction.
Thirty-two patients with acute cerebral infarction received either prostacyclin or placebo intermittently for 65 hours. Pulse and blood pressure were not altered by prostacyclin. After infusion there was no change in infarct volume or cerebral blood flow in either group. After normalisation for starting values, age and site of cerebral infarction there was a greater than 10% improvement in speech in the prostacyclin group, but minimal changes in neurological score or disability status. Age is related to neurological score at 14 days after stroke by decreasing improvement by 6.8% for each additional 10 years. This study has not been able to demonstrate that prostacyclin is effective in the treatment of ischaemic stroke, but due to the sample size the chance of proving this statistically (the power) was small. Similarly any conclusion that prostacyclin is not effective may be wrong because of the Type II error probability being high.
Aged↗
Diaphanography in breast carcinoma. Correlation with clinical examination, mammography, cytology and histology.
Histologically classified carcinoma was present in 110 breasts of 108 symptomatic women. The results of diaphanography (DPG) were correlated with those obtained by clinical examination (CE), mammography (M) and cytology (C). A tumour was palpable in 87 cases (79.1%). A false negative diagnosis was made in 17 cases (15.5%) using DPG, in 13 cases (11.8%) using M and in 15 cases (13.6%) using C, but in 12 of the latter cases (10.9%) the specimen was not representative. The validity of the findings using DPG and M was also analysed. The calculations were based on the results obtained from the present investigation and from a study of diaphanography in 163 cases of benign breast disorders. For DPG the sensitivity was 85 per cent, the specificity 91 per cent, the positive predictive value 86 per cent and the negative predictive value 90 per cent. For M the sensitivity was 86 per cent, the specificity 80 per cent, the positive predictive value 75 per cent and the negative predictive value 91 per cent. The specificity for diaphanography was significantly different from mammography (p less than 0.05). The use of both M and DPG reduced the number of false negatives from 11.8 per cent to 5.5 per cent. In conclusion, DPG has been demonstrated to be a useful adjunct to CE and M.
Adenocarcinoma↗
Diaphanography in benign breast disorders. Correlation with clinical examination, mammography, cytology and histology.
Histologically classified benign breast disorder was present in 163 breast of 158 symptomatic women. The results of diaphanography (DPG) were correlated with those obtained by clinical examination (CE), mammography (M) and cytology (C). A tumour was palpable in 108 cases (66.3%). A false positive diagnosis, i.e. possibly malignant, probably malignant or malignant was made in 15 cases (9.2%) with DPG, and in 33 cases (20.2%) with M. Use of both M and DPG reduced the number of false positives to 1.8 per cent. In 8 cases (4.9%) false positive diagnosis was made with C. During a mean observation time of 58.5 months (range 44-72 months, one case of breast carcinoma was diagnosed.
Adenofibroma↗