| 1. |
- Andersson-Engels, Stefan, et al.
(författare)
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Laser-induced fluorescence used in localizing atherosclerotic lesions
- 1989
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Ingår i: Lasers in Medical Science. - 0268-8921. ; 4:3, s. 171-181
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Tidskriftsartikel (refereegranskat)abstract
- We have investigated laser-induced fluorescence frompost mortem human arteries in order to find spectroscopic properties allowing discrimination between normal and atherosclerotic vessel wall. A pulsed nitrogen laser emitting light at a wavelength of 337.1 nm was used as an excitation source. The fluorescence spectrum from 370 to 700 nm was captured and analysed by an optical multichannel analyser. Dimensionless contrast functions were formed by using characteristic spectral features at 390, 415, 480, 580 and 600 nm. All samples were investigated in scans across a region where normal as well as diseased vessel wall appeared. The types of plaque were histopathologically divided into four groups, of which three could be singled out using one or more of our spectroscopic criteria. We also investigated the different layers of the normal and diseased vessel wall in order to determine the various contributions to the fluorescence signal. Furthermore, plasma emission spectra were recorded while ablating the normal as well as the diseased vessel wall with an excimer laser, emitting radiation at 308 nm, thus detecting the change in spectral characteristics during the ablation process down into deeper layers.
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| 2. |
- Ranstam, Jonas, et al.
(författare)
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Oral-Contraceptive Use and the Risk of Breast Cancer
- 1987
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Ingår i: New England Journal of Medicine. - 0028-4793. ; 316:3, s. 162-164
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Tidskriftsartikel (refereegranskat)abstract
- To the Editor: The study on oral-contraceptive use and the risk of breast cancer from the Centers for Disease Control (CDC) and the National Institute of Child Health and Human Development (Aug. 14 issue)1 seems to be reassuring for oral-contraceptive users. But, as stated in the editorial by Shapiro in the same issue,2 there are some weak points that need further elucidation. We have found a highly increased risk of breast cancer among young (teenage) oral-contraceptive users in southern Sweden.3 From incidence figures for Sweden, an increase in premenopausal breast cancer can be seen to have started in about 1975,…
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| 3. |
- Åkeson, Jonas, et al.
(författare)
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Serum CK-MB is useful in diagnosis of acute myocardial infarction after total hip arthroplasty
- 1989
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Ingår i: Acta Anaesthesiologica Scandinavica. - 0001-5172. ; 33:6, s. 435-438
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Tidskriftsartikel (refereegranskat)abstract
- Skeletal muscle trauma and myocardial infarction both increase the serum values of the creatine kinase isoenzyme MB (CK-MB) which may render the diagnosis of perioperative myocardial infarction in major orthopaedic surgery more difficult. The significance of postoperative changes in CK-MB was studied in 30 patients subjected to total hip replacement (THR), and the results were compared to CK-MB in 30 nonsurgical patients with acute myocardial infarction (AMI). AMI patients had significantly higher serum CK-MB values at 24 h than THR patients. However, the highest value after THR exceeded the lowest value in AMI. The results suggest that skeletal muscle release of CK-MB after THR is slight. CK-MB thus also seems useful in the diagnosis of AMI in postoperative patients.
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