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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Precisionsbestämning av bendensitometri

Karlsson, Karin, Mortensen, Nadja January 2010 (has links)
International Society for Clinical Densitometry (ISCD) rekommenderar att precisionsbestämning av bentäthetsmätning görs på varje klinik för att bedöma reproducerbarheten. Bentäthetsmätning görs för att diagnosticera osteoporos, följa upp behandling och förutsäga frakturrisk. I studien användes Dual energy x-ray absorptiometry (DXA) för att utföra dubbla mätningar på redan inbokade patienter på klinisk fysiologi, Skånes Universitetssjukhus (SUS), Lund. 105 patienter ingick i studien. Mätningarna utfördes på helkropp, totalhöft, lårbenshals och ländrygg. Helkroppsmätningar ingick i en interindividuell studie och de övriga ingick i intraindividuella studier. Reproducerbarheten uttrycktes som minsta signifikanta skillnaden (LSC), root mean square standardavvikelse (RMS SD) och variationskoefficient (%CV). Reproducerbarheten i studien var god med låga värden för LSC och RMS SD. %CV understeg de av ISCD rekommenderade maxvärdena, vilka är 1,8 % för totalhöft, 2,5 % för lårbenshals och 1,9 % för ländrygg. / It is recommended by the International Society for Clinical Densitometry (ISCD) that every clinic performs a precision assessment of bone densitometry to evaluate the reproducibility. Bone densitometry is used for diagnosis of osteoporosis, to monitor response to treatment and to assess patients’ risk of fractures. Dual energy x-ray absorptiometry (DXA) was used to perform double scans of patients already booked for examination at the section of clinical physiology, Skåne University Hospital (SUS), Lund. 105 patients were included in the study. Measurements were made at whole body, total hip, femoral neck and lumbar spine. The whole body scans were included in an interindividual study, whereas the others were included in intraindividual studies. The reproducibility was expressed as least significant change (LSC), root mean square standard deviation (RMS SD) and coefficient of variation (%CV). The reproducibility in the study was good, with low values for LSC and RMS SD. %CV fell below the maximal values recommended by the ISCD, which are 1,8 % for total hip, 2,5 % for femoral neck and 1,9 % for lumbar spine.

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