| 21. |
- Drottz-Sjöberg, Britt-Marie, et al.
(författare)
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Psychological reactions to cancer risks after the Chernobyl accident
- 1987
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Ingår i: Medical Oncology. - : Humana Press. - 1559-131X .- 1357-0560. ; 4:3-4, s. 259-271
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Tidskriftsartikel (refereegranskat)abstract
- This is a report on an investigation of people's reactions to the Chernobyl accident. Interviews and, mail surveys were conducted in July-September 1986 with pregnant women, parents of newborn children, farmers, adolescents and men who were not parents, in various areas of Sweden, differing as to the amount of Chernobyl fallout they had received. The accident had probably doubled the number of people who were negative to nuclear power in the most affected area. Radiation risks were highly salient in most groups. Areas differed in the expected direction, people in the more, exposed areas being more concerned. Women were more worried and more negative to nuclear power than men while adolescents appeared to be the group least affected by the accident. Farmers were also strongly opposed to nuclear power and concerned about its risks. Nuclear attitude could be well accounted for by attitude statements and rated basic life values. It was quite stable over a 1 month period.
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| 22. |
- Edholm, Paul
(författare)
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Linograms
- 1988
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The several successful solutions to the problem of image reconstruction from projections have caused a rapid growth of a number of new techniques for the reconstruction of distributions and images in several scientific fields. The importance of these techniques, especially in medicine, can hardly be overestimated. In a new algorithm for image reconstruction from projections [l, 2], a special form of the projection data is employed providing some certain advantages. This new form or map of the projection data are called linograms. This is intended as an overview of linograms and the algorithm based on them. Thorough discussions of conventional techniques are to be found in [3, 4 and 5]. In conventional techniques for image reconstruction, a two dimensional distribution of some property is reconstructed. The property might be the x-ray attenuation in a cross-section of the body, the distribution of a radioactive substance or something else. The distribution is not directly accessible but it is possible to measure line integrals (rays) through i t. The problem now is to reconstruct the distribution (the image) from i ts line integrals (its projections). Let the property we are interested in be described by the function f(x, y). projection data are estimates of line integrals of f of known location. Incon~entional techniques each line is specified by two parameters s and e, where s is the (signed) distance from the origin and e its angle with the y-axis.
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| 23. |
- Ekberg, Olle, et al.
(författare)
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Pharyngeal function in patients with rheumatoid arthritis of the cervical spine and temporomandibular joint
- 1987
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Ingår i: Acta Radiologica. - 1600-0455. ; 28:1, s. 35-39
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Tidskriftsartikel (refereegranskat)abstract
- Pharyngeal function was studied in 31 patients with rheumatoid arthritis. Eighteen of these patients had dysphagia. Cervical spine abnormalities were present in 14. Destruction of the capitulum and/or ramus of the mandible was registered in 9. Pharyngeal dysfunction was revealed in 20. Patients with a vertical dislocation of the C1-C2 in relation to the occipital bone and patients with destruction of the capitulum and/or ramus of the mandible had an increased frequency of pharyngeal dysfunction. Pharyngeal dysfunction is thought to be due to mechanical factors and caused by derangements of muscular attachments and turning points.
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| 24. |
- Ekberg, Olle, et al.
(författare)
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Radiographic findings after cricopharyngeal myotomy
- 1987
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Ingår i: Acta Radiologica. - 1600-0455. ; 28:5, s. 555-558
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Tidskriftsartikel (refereegranskat)abstract
- Single film examinations (iodine and/or barium) were reviewed in 28 patients who had undergone surgery on the cricopharyngeal muscle due to Zenker diverticula (24 patients), cricopharyngeal muscle incoordination (3 patients) and pharyngoesophageal web (one patient). All patients had had a myotomy which included the cricopharyngeal muscle and up to 3 cm of the cervical esophagus. Lateral and anterior deviation of the pharynx and cervical esophagus occurred regularly. A pharyngocutaneous fistula developed in 2 patients which healed within 3 weeks. In 5 patients there was a posterior leak of contrast medium during the first postoperative week which healed within 2 weeks. Six of these seven patients with a fistula or a leak had had either a diverticulum removed or sustained an accidental mucosal perforation. No patient had recurrence of diverticula, although, 9 patients developed a cricopharyngeal muscle impression. Iodine and barium examinations are important for monitoring early and late postoperative changes after cricopharyngeus myotomy.
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| 25. |
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| 26. |
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| 27. |
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| 28. |
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| 29. |
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| 30. |
- Ivancev, Krassi, et al.
(författare)
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Computed tomography in the diagnosis and treatment of mediastinal abnormalities in children
- 1988
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Ingår i: Acta Radiologica. - 1600-0455. ; 29:1, s. 115-120
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Tidskriftsartikel (refereegranskat)abstract
- Thirty-one children with mediastinal abnormalities--14 malignant lymphomas, 4 other primary malignancies, one metastatic and 12 benign lesions--were examined one or several times using CT, which proved to be effective especially for cysts (5 patients), ductus arteriosus aneurysm (2 patients), and intrathoracic liver (one patient). It also supplied important diagnostic information regarding the extent of disease in malignant thymoma (one patient), in neurinoma (one patient), and in Hodgkin's lymphoma (5 patients). It was found to be useful in the monitoring of treatment of patients with lymphomas, in which a small residue, probably a fibrotic remnant, was invariably seen after completion of chemotherapy and irradiation. It was concluded that when the residue was enlarged, the possibility of relapse and even thymic hyperplasia should be considered. However, if CT was performed under general anaesthesia pseudo-widening of the anterior mediastinum could simulate recurrence. Surgical biopsy was found to be necessary in these cases because fine-needle aspiration biopsy was unsuccessful.
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