Ökad diagnostisk säkerhet av polyper i kolon med CT-kolografi
Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
This report deals with the diagnosis of pathological changes in the colon, specifically polyps and colorectal cancers. In the diagnosis of polyps, three main methods are widely used: Colon X-ray, colonoscopy and CT colonography. In this report, all three methods are considered. This report also deals with the pathology of the colon, colon x-ray, colonoscopy, CT technology and CT malignancy evaluation. Many hospitals are increasingly utilizing CT colonography as a radiology methodical first choice in the evaluation of suspect polyps and malignancies from methods previously used (mainly colon imaging with double contrast). The advantages of CT colonography are above all: higher diagnostic confidence, higher sensitivity and especially a more "comfortable" examination for the patient. CT colonography provides the radiologist with an array of information about the patient's colon. The images can be shown in 3D and also provide valuable information about surrounding areas, being of great benefit in the event of an incidental finding. However, CT colonography also has its limitations and drawbacks. A CT machine is expensive to purchase and service, the survey is done by ionizing radiation and leads to relatively high radiation dose to the patient and review of the images takes time and requires increased radiology resources. In this report, it has been investigated whether CT colonography has the diagnostic ability to detect clinically relevant polyps. The results show that CT colonography is an excellent method in ensuring the diagnosis of polyps 10 mm or larger, but the method in itself should not be regarded as a replacement of colonoscopy, rather as an excellent complement. Several articles were examined to compare CT colonography's ability to detect polyps compared to colonoscopy. One article compared the five different screening methods regarding the survey methods ability to detect polyps and cancer. It was found that the diagnostic confidence achieved with CT colonography is comparable to the diagnostic confidence achieved with colonoscopy, which is often considered the most reliable of all existing methods.
Place, publisher, year, edition, pages
2011. , 42 p.
Medicin, Polyper, Kolorektal cancer, Datortomografi, Konventionell röntgen, Koloskopi
IdentifiersURN: urn:nbn:se:ltu:diva-51088Local ID: 84da9f06-1e44-4c29-bea1-68b42b6ca22cOAI: oai:DiVA.org:ltu-51088DiVA: diva2:1024451
Subject / course
Student thesis, at least 15 credits
Diagnostic Radiology Nursing, bachelor's level
Validerat; 20110120 (anonymous)2016-10-042016-10-04Bibliographically approved