Magnetresonanstomografi med diffusionsprotokoll vid stroke: En retrospektiv deskriptiv studie
Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Aim: The aim of this retrospective study was to identify which indications prompted an MRI examination using the protocol ”Brain screening/Stroke” and whether the screening revealed recent infarcts and their localisation.
Method: The data, which was subtracted from RIS (Röntgeninformationssystem), covered all consultation responses from stroke-rounds performed during 2015 at Akademiska Hospital in Uppsala (UAS). A total of 235 patients underwent an MRI-examination using the protocol ”Brain screening/Stroke”. Of this total population, 9 patients with a suspected or confirmed tumour were excluded. The information was collected at UAS during the period 11-22 April, 2016.
Results: No indications were reported from the material collected. Hence, the method was insufficient to give an answer to the question at hand. In the final selection of 226 patients, no stroke could be detected in 42 % of the cases, 23 % had recent infarcts, 21 % had both recent and old infarcts and 14 % had only old infarcts. By gender the results were as follows: Of the total population, 85 patients were female. In 48% of these cases no stroke was detected, 21 % had recent infarcts, 20 % had old infarcts and 11 % had both recent and old infarcts. The remaining 142 patients were male. In 38% of these no stroke was detected, in 27% of the cases both an old an a recent stroke were detected , in 24% of the cases a recent stroke was detected and 11% had only old infarcts. Looking again at the total population, the consultation responses mentioned only recent infarcts and where these were located. The majority of the recent infarcts detected, 23 % were located in the Lobes of the brain, followed by 16% in the Cortex of the brain, 16% in the Brainstem, 13% in the Cerebellum, 10 % were locaded in ”Other parts of the brain”, 8 % were in the Talamus, 7 % were in White matter and the final 6 % in the Basala ganglia. The total number of recent infarcts detected was 189.
Conclusion: The main question for this study was to see if it was possible to discover acute infarcts, using diffusion weighted MRI, and the localisation of those discovered. The method chosen worked well, but to get a better overview, more studies should be done, examining infarcts in greater detail. This knowledge may, in turn, be used as a basis for stroke diagnosis. It might also be of interest to complete this study, with a more in-depth analysis of the connection between different kinds of infarcts and the patient’s gender and age.
Place, publisher, year, edition, pages
2016. , 29 p.
stroke, MRI, DWI, localization
stroke, MR, DWI, lokalisation
Radiology, Nuclear Medicine and Medical Imaging
IdentifiersURN: urn:nbn:se:uu:diva-296220OAI: oai:DiVA.org:uu-296220DiVA: diva2:936785
Nikkola, Ulla, Universitetsadjunkt
Gunnarsson, Anna-Karin, Universitetslektor