Biomedical subjects

H Olivecrona

Publications and source records attributed to H Olivecrona.

At least 55 records · Page 3Linked to original sources

PubMed1979

Evaluation of the internal auditory meatus with acoustic neuromas using computed tomography.

Forty-seven patients with 48 unoperated acoustic neuromas have been studied by computed tomography (CT) with respect to bone changes. CT and conventional X-ray examination of the skull were compared. The importance of using a small collimator, proper selection of the plane of the CT section and changing of the window level is stressed. CT detects porus changes as accurately as conventional X-ray methods.

Adult↗

PubMed1978

The differential diagnosis of pontine angle meningioma and acoustic neuroma with computed tomography.

Seven pontine angle meningiomas were examined with computed tomography (CT). The result was compared with that of a study of 61 acoustic neuromas. These two tumor types differ in manner of growth, volume, shape, attenuation, attachment to bone, cisternal deformation, frequency of calcification, peripheral edema, and bone changes.

Adult↗

PubMed1978

Diagnosis of acoustic neuroma with computed tomography.

Sixty-one acoustic neuromas were examined with computed tomography (CT). For differential diagnosis the tumors were thoroughly analyzed for manner of growth, shape, volume, calcification, attenuation pattern, constrast enhancement, presence of peripheral edema, and cisternal deformation.

Adolescent↗

PubMed1978

Early contrast enhancement of acoustic neuroma.

The changes of the enhancement of the lesion with time after intravenous administration of contrast medium were measured with computed tomography (CT) in 23 cases of acoustic neuroma. The pattern of high initial enhancement followed by a fairly rapid decrease is confirmed. A more rigorous study of the enhancement pattern using a mathematical description of the enhancement curve of the tumor as well as a measurement of the individual blood enhancement curve is discussed.

Adult↗

PubMed1978

Changes of internal auditory meatus.

Forty-seven patients with 48 nonoperated acoustic neuromas have been studied by computed tomography (CT) with respect to bone changes. CT and conventional X-ray examination of the skull were compared. The importance of using a small collimator, proper selection of the plane of the CT section, and changing of the window level is stressed. CT detects porus changes as accurately as conventional X-ray methods.

Humans↗

PubMed1977

Complications of cerebral angiography.

All types of complications, both minor and major, are tabulated and analyzed in 5531 consecutive cerebral angiographies performed on 3730 patients during a period of 5 years.

Adolescent↗

PubMed1977

[Thoracic outlet syndrome].

Explore the source record for details and available documents.

Adult↗

PubMed1976

The phlebographic pattern of acute leg thrombosis within a defined urban population.

The incidence of thrombosis during one year in a defined population of 263 144 city inhabitants has been studied with a new method based upon acute phlebography of all patients with the slightest symptoms of the disease. The roentgenographic pattern of the acute thrombosis has been studied and the size of the individual thrombus has been compared with the duration of the symptoms. The incidence of thrombosis was found to be 0.9 per mille per year. No correlation was found between the size of the thrombus and the duration of the symptoms. The thrombus had its origin in the calf veins in 89% of the patients and its origin in a vein at a higher level in 10% of the patients. In patients with a thrombus confined to the calf veins the contrast medium always entered the deep crural veins. When the calf vein thrombosis had an extension to the popliteal vein or still higher up the contrast medium bypassed the deep crural veins in more than 75% of the patients.

Adult↗

PubMed1975

The effect of estrogen on the vascular endothelium and its possible relation to thrombosis.

The effect of estrogen on the permeability of the endothelium of the aorta has been studied in the rat. The endothelium was subjected to different forms of chemical injury, and its permeability to silver ions was estimated in rats in a control group and in rats after estrogen treatment. In rats subjected to estrogen treatment, the degree of silver penetration through the endothelium was significantly higher than in untreated rats. This was interpreted as an increased vulnerability of the endothelium after estrogen treatment. Thrombosis in females using oral contraceptives often has an aberrant localization. These findings lead to a theory that an endothelial factor may be involved in the pathogenesis of this form of thrombosis.

Animals↗

PubMed1973