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Biomedical subjects

S Cronqvist

Publications and source records attributed to S Cronqvist.

At least 55 records · Page 3Linked to original sources
PubMed1977

Repeat angiography in temporal contusions.

In the diagnosis of a temporal contusion bilater filling of the Sylvian vessels permits adequate comparison between the two sides. Such a comparison is important since even at a large contusion with marked upward or medial displacement of the Sylvian vessels no corresponding shift of the midline structure may exist in the acute stage. With increasing interval between trauma and angiography a shift may develop reflecting the true size of the lesion.

Cerebral Angiography↗
PubMed1977

Cervical myelography with metrizamide.

In 177 patients 190 cervical myelographies were performed, 52 after cervical and 138 after lumbar puncture. While the last-mentioned technique may be considered as the safest, the first-mentioned appears to cause less adverse reactions and also offers films of higher quality. The cooperative ability of the patient as well as the shape of the spine must be considered for selecting the site of puncture. Films are obtained permitting high diagnostic accuracy with regard to lesions involving root sleeves and to the presence of intramedullary or extramedullary lesions, in particular protrusions and disc herniations.

Humans↗
PubMed1977

Thoracic myelography with metrizamide.

In 124 patients 141 thoracic myelographies were performed with metrizamide (Amipaque). This contrast medium penetrates narrow spaces more easily than gas and oily media. The technique and the positioning of the patient should be adapted to the region clinically suggested in order to obtain best results.

Female↗
PubMed1977

Ventriculography with metrizamide.

In 77 patients 85 ventriculographies were performed with metrizamide (Amipaque). No severe complications occurred. The diagnostic accuracy in lesions affecting the midline structures is excellent. However, the rapid passage of the medium from the ventricular system in cases with slight obstructions or small lesions requires a scrupulous technique to enable an exact diagnosis. Due to the difficulty in differentiating between intra- and extra-cerebral location of an expansivity, encephalography should be performed as the first examination whenever possible.

Cerebral Ventriculography↗
PubMed1976

Ventriculography with Amipaque.

Greater diagnostic accuracy of lesions of the third and fourth ventricles and aqueduct has resulted from the use of positive contrast ventriculography with the watersoluble medium Amipaque. The examination is performed more easily than with gas ventriculography and has caused no distress or complication in 47 patients.

Adolescent↗
PubMed1976

Orbital phlebography in evaluation of the cavernous sinus and adjacent basal veins of the skull.

Frontal vein phlebography has proven to be of great diagnostic value in the evaluation of pituitary tumours and of lesions in the vicinity of the sella turcica. It permits the diagnosis of venous thrombosis; similar phlebographic changes may be the only positive radiologic finding in cases with malignant tumour of the skull base. Phlebography is thus to be recommended as an early method to be used in possibly malignant lesions at the skull base.

Adult↗
PubMed1976

Preliminary experiences with the EMI scanner.

Preliminary experiences of computed tomography of the head are reported in a material of 213 patients. The majority of examined lesions includes intracranial tumours and cerebrovascular lesions.

Arachnoid↗
PubMed1976

Complications of orbital and skull base phlebography.

Two complications, one in association with frontal vein phlebography and one in association with inferior petrosal sinus phlebography, are presented. Possible mechanisms for complications are discussed. It is concluded that a significant risk exists in association with inferior petrosal sinus phlebography, particularly in association with vascular disorders of the skull base, while the risk in association with orbital phlebography after frontal vein puncture is minimal if compression of the jugular veins is omitted.

Aged↗
PubMed1975

Protrusion of calcified cervical discs into the spinal canal in children. A report of two cases.

The occurrence of calcified discs with large calcified masses protruding into the spinal canal in two children is reported. The discs affected had increased height in the acute stage. Air myelogram, performed in one case with muscular weakness in the hand demonstrated compression of the spinal cord. The condition improved on conservative treatment without sequelae in both cases.

Calcinosis↗
PubMed1975

Cerebrospinal fluid spectrophotometry and computerized transverse axial tomography (EMI scanning) in cerebrovascular diseases. Comparative study between two actual diagnostic methods in cerebrovascular disorders.

51 patients with cerebrovascular diseases were examined by CSF spectrophotometry (CSF-SPE) and computerized transverse axial tomography (CTAT: EMI scanning), most cases being followed by several examinations. Specific diagnoses were detected in 98 (CSF-SPE) and 75% (CTAT) of the cases, generally by only one examination. In cases examined angiographically or by isotope encephalography, the corresponding figures were 50 and 0%. The combination of CSF-SPE and CTAT examination obviously means a breakthrough in diagnosis of cerebrovascular diseases which is naturally a prerequisite for the more rational therapy of these common and frequently disabling disorders.

Angiography↗
PubMed1975

Computer assisted axial tomography in cerebrovascular lesions.

Computer assisted axial tomography was performed in 32 patients with clinically possible cerebrovascular lesions. Decreased absorption as a sign of infarction was found in 15, increased absorption as a sign of hemorrhage in 7 cases. In another 7 cases, diagnosed as hemorrhagic infarction, a simultaneous occurrence of increased and decreased absorption appeared. Increased absorption might also depend on compression effect of edema. In three cases no abnormal attenuation could be demonstrated. Infarctions could be observed years after the onset of the symptoms; intracerebral hemorrhages regressed slowly.

Adult↗
PubMed1975

Computer tomography compared with spectrophotometry of cerebrospinal fluid in cerebrovascular diseases.

Eighty patients with cerebrovascular diseases were examined by computer tomography and spectrophotometry of CSF, most cases being followed by repeat examinations. Specific diagnoses were obtained in 76 per cent of the cases at tomography and in 95 per cent at spectrophotometry, generally at one examination. In cases examined angiographically or by isotope encephalography, the corresponding figures were 60 and 58 per cent. Twenty patients with confirmed haemorrhage or infarction examined only at tomography further indicated the high diagnostic significance of this method. The combination of tomography and spectrophotometry, being complementary to each other, obviously means a break-through in the diagnosis of cerebrovascular diseases, which is a prerequisite for a more rational therapy of these common and frequently disabling disorders.

Brain↗