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- Zanini, Luca, et al.
(författare)
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Measurement of Volatile Radionuclides Production and Release Yields followed by a Post-Irradiation Analysis of a Pb/Bi Filled Ta Target at ISOLDE
- 2014
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Ingår i: Nuclear Data Sheets. - : Elsevier BV. - 0090-3752. ; 119, s. 292-295
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Tidskriftsartikel (refereegranskat)abstract
- A crucial requirement in the development of liquid-metal spallation neutron target is knowledge of the composition and amount of volatile radionuclides that are released from the target during operation. It is also important to know the total amount produced, which could be released if there was an accident. One type is the lead-bismuth eutectic (LBE) target where different radionuclides can be produced following interaction with a high-energy proton beam, notably noble gases (Ar, Kr, Xe isotopes) and other relative volatile isotopes such as Hg and At. The results of an irradiation experiment performed at ISOLDE on a LBE target are compared with predictions from the MCNPX code using the latest developments on the Liege Intranuclear Cascade model (INCL4.6) and the CEM03 model. The calculations are able to reproduce the mass distribution of the radioisotopes produced, including the At production, where there is a significant contribution from secondary reactions. Subsequently, a post-irradiation examination of the irradiated target was performed. Investigations of both the tantalum target structure, in particular the beam window, and the lead-bismuth eutectic were performed using several experimental techniques. No sign of severe irradiation damage, previously observed in other ISOLDE targets, was found.
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- Acosta, Stefan, et al.
(författare)
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Successful Selective Thrombolysis for Limb-Threatening Ischemia due to Bilateral Lower Extremity Emboli After Open Aortic Aneurysm Repair
- 2010
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Ingår i: Vascular and Endovascular Surgery. - : SAGE Publications. - 1938-9116 .- 1538-5744. ; 44:6, s. 506-507
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Tidskriftsartikel (refereegranskat)abstract
- Severe lower extremity emboli with occlusion of all 3 lower limb arteries bilaterally occurred after an elective open abdominal aortic aneurysm (AAA) repair. Selective thrombolysis with alteplase and repeated percutaneous transluminal angioplasty (PTA) along the occlusions on both side anterior and posterior tibial arteries was performed without complications. Angiography the following day showed continuous filling of the anterior tibial artery down to the dorsalis pedis artery and interrupted, but improved, flow in the medial plantar artery through collaterals. The patient recovered well. At 1 month follow-up, the right foot was unremarkable, whereas the patient experienced slight residual numbness in the medial and distal plantar aspect of his left foot where the great toe/brachial index were lowered to 0.46.
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- Ravn-Fischer, Annica, 1974, et al.
(författare)
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Community-based gender perspectives of triage and treatment in suspected myocardial infarction.
- 2012
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Ingår i: International journal of cardiology. - : Elsevier BV. - 0167-5273 .- 1874-1754. ; 156:2, s. 139-143
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Tidskriftsartikel (refereegranskat)abstract
- Abstract BACKGROUND: The gender perspectives of the triage of acute coronary syndromes (ACS) in a community are insufficiently explored. METHODS: Patients (n=3224) with symptoms of ACS, in whom ECG was sent by the ambulance crew to a coronary care unit (CCU)/ cath lab, were investigated in the municipality of Göteborg in 2004-2007. Background, triage priority, investigations and treatment were analysed (p-values age adjusted) in relation to gender. Data were compared with three published studies (1995-2002: Surveys 1-3). RESULTS: Women were directly admitted to the CCU significantly less frequently than men (23 versus 35%, p<0.0001). Adjusted for ECG findings, age, symptoms and medical history, odds ratio and 95% confidence limits (for direct admission; men versus women) were 0.61; 0.46-0.82. SURVEY 1: Patients with ACS, aged <80, in CCU at a university hospital (n=1744). Only minor differences between women and men, with regard to investigations and treatment, were found. SURVEY 2: Patients discharged from hospital (dead or alive) with AMI, regardless of type of ward (n=1423). Fewer women than men were admitted to CCU and fewer women underwent coronary angiography (21% versus 40%; p=0.02) and coronary revascularisation (12% versus 27%; p=0.004). SURVEY 3: Patients with symptoms of AMI (n=930) and patients with a confirmed AMI (n=130) from a pre-hospital perspective. Women tended to be given lower priority than men both by the ambulance dispatchers and by the ambulance crew. CONCLUSION: In our practice setting, men are given priority over women in admission to CCU, but no gender differences are seen thereafter.
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