magistrska naloga
Anja Bedene (Author), Maja Marolt-Mušič (Reviewer), Janez Žibert (Mentor), Nejc Mekiš (Co-mentor)

Abstract

Uvod: Rak dojke je v zahodnem svetu najpogostejše maligno obolenje žensk v srednji starostni skupini. Z mamografijo odkrivamo bolezenske spremembe v dojki. Mamografijo opravimo v dveh projekcijah: polstranski (MLO) in kraniokavdalni (CC). Za zagotavljanje kakovosti mamografskih slik je pomembno pravilno pozicioniranje dojk. Za oceno kakovosti uporabljamo slovensko klasifikacijo. Namen: Namen magistrske naloge je ugotoviti, ali s spremembo osnovnega kota pri polstranski projekciji dojk v mamografski diagnostiki prikažemo več diagnostično pomembnega tkiva glede na različne konstitucije pacientk. Metode dela: Raziskava je potekala na Onkološkem inštitutu – Slovenski državni presejalni program DORA. S pomočjo slikovnega merila v slikovnem arhivu IMPAX, smo na mamografskih posnetkih izvedli tri meritve: širino kota prsne mišice; retromamilarni bazalni (maščobni) del tkiva dojke; inframamarni predel (IMF) tkiva dojke. Rezultati: Primerjava izmerjenih vrednosti prikazanega dela pri slikanju dojk med kotom 55° in kotom 45° nam potrdi, da pri slikanju pod kotom 55° prikažemo več tkiva dojke. Z uporabo kota 55° prikažemo več tkiva dojke v vseh treh meritvah (širina prsne mišice, meritev bazalnega/maščobnega in inframamarnega predela dojke). Z rezultati meritev MLO projekcij pod kotom 35° in 45° dokažemo, da z uporabo kota 35° prikažemo več tkiva dojke pri bazalnem/maščobnem in spodnjem narastiščem dojke v primerjavi s standardnim kotom 45°. Pri slikanju dojk s kotom 45° pa prikažemo več širine prsne mišice v primerjavi pri slikanju dojk s kotom 35°. Razprava in zaključek: Z uporabo kota 55° prikažemo več milimetrov tkiva dojke v vseh treh meritvah; pri širini prsne mišice, meritve bazalnega in inframamarnega predela. S spremembo kota 35° smo dokazali, da prikažemo več tkiva dojke pri bazalnem/maščobnem in spodnjem narastiščem dojke v primerjavi s standardnim kotom 45°. Pri meritvah širine prsne mišice je kot 45° podoben projekcijah z uporabo kota 55° in kota 35° (pri različni anatomiji/konstitucije preiskovanke) prikažemo več tkiva dojke.

Keywords

magistrska dela;radiološka tehnologija;mamografija;dojke;DORA;pozicioniranje;preiskovanke;rak dojk;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL ZF - University College of Health Studies
Publisher: [A. Bedene]
UDC: 616-07
COBISS: 5527147 Link will open in a new window
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Other data

Secondary language: English
Secondary title: ǂThe ǂeffecto [!] of different agulation [!] on the breast positioning in mediolateral projection in mammographic imaging
Secondary abstract: Introduction: Breast cancer is one of the most common malignant disease in the western world amongst middle aged women. With mammography we discover diseased breast changes. Mammography is completed with two projections (images): Mediolateral-oblique (MLO) and Cranial Caudal (CC) view. For providing the quality assurance of mammographic images, correct breast positioning, is important. For the evaluation of the quality we utilize Slovene Classifications. Purpose: The purpose of the master´s degree is to discover, if a change of the basic MLO angle (45°) maximizes the amount of the breast tissue seen on image, by examining different body shapes of patients.Work methods: The research was conducted at the Institute of Oncology – Slovenian Breast Cancer Screening Program DORA. With the help of the image criterion in the Picture Archive IMPAX, three measurements were performed on mammographic images: the width of the pectoral muscle; retromammary space (fatty tissue); inframammary part (IMF) of the breast.Results: The comparison of the measured values of examined part of the breast with concave sternum, between the angle 55° and 45°, confirms that imaging at an angle 55 °captures more breast tissue. Furthermore, when using an angle 55°, more breast tissue is shown in all three measurements (the width of the pectoral muscle, the measurement of retromammary /fatty tissue and inframammary part of the breast). With the results of the MLO projection of the breast with convex sternum at an angle 35° and 45° we confirm that, by using an angle 35° we show more breast tissue in the retromammary/fatty and inframammary part, than a basic 45° angle. Whereas, an imaging of breasts at an angle 45°, shows more width of the pectoral muscle, if comparing with an angle 35°. Discussion and conclusion: With the utilization of an angle 55°, when convex sternum, a greater area (millimetres) of the breast tissue can be seen when considering all three measurements; the width of the pectoral muscle, the measurements of retromammary and inframammary part. With the alteration to an angle 35°, when concave sternum, we proved that retromammary and inframammary tissue of the breast is visible better, than at a standard angle 45°. When measuring the width of the pectoral muscle, the angle 45° gives similar results like the angle 35°. With the results of the measurements we can confirm that, when imaging in MLO projection at an angle 55°and 35° (using it on a different anatomy/body shapes of patients) we show/capture a larger part of the breast tissue.
Secondary keywords: master's theses;radiologic technology;mammography;breasts;DORA;positioning;patients;breast cancer;
Type (COBISS): Master's thesis/paper
Study programme: 0
Thesis comment: Univ. v Ljubljani, Zdravstvena fak., Oddelek za radiološko tehnologijo
Pages: 49 str.
ID: 10980923