diplomsko delo
Timotej Kidrič (Author), Rok Sirk (Author), Valerija Žager (Reviewer), Janez Žibert (Mentor), Sašo Arnuga (Co-mentor)

Abstract

Uvod: Na področju diagnostičnega ultrazvoka obstajajo fantomi za kontrolo kakovosti in kalibracijo opreme. Le-ti se uporabljajo tudi za izobraževanje, raziskovalno delo in za pomoč pri razvoju novih diagnostičnih tehnik. S pomočjo fantomov poenostavimo in standardiziramo slikovno okolje. Fantomi so sestavljeni iz materialov, ki posnemajo tkiva, znotraj katerih so lahko vgrajeni tudi preprosti ali zapleteni objekti, ki posnemajo različne strukture. Komercialni fantomi so običajno zasnovani za široke trge in jih zaradi tega ni mogoče prilagajati. Iz tega razloga se tudi oblikujejo in izdelujejo fantomi po meri na zahtevo specifičnih namenov, drugačnih dimenzij ali zaradi znižanja stroškov. Namen: Namen je poiskati fantome in materiale, primerne za simulacijo človeškega tkiva iz literature in z eksperimentalnim delom na Zdravstveni fakulteti oceniti ultrazvočne slike izbranih materialov. Metode dela: V diplomskem delu smo uporabili deskriptivno metodo s pregledom literature, ki je trajal od 22. 10. 2020 do 16. 3. 2021. Pri eksperimentalnem delu smo z ultrazvočnim aparatom SonoScape E2 in s pripadajočima linearno ter konveksno sondo preizkušali izbrane materiale. Rezultati: Na podlagi ugotovitev iz pregleda literature smo za prikaz izbrali tofu, želatino, meso, vodo in ultrazvočni gel. Pri fantomu tofuja dobimo homogeno sliko. Pri želatini in mesu je na sliki viden mešan signal. Pri vodi in ultrazvočnem gelu pa je slika nehomogena. Vsi izbrani materiali so lahko dostopni z izjemo ultrazvočnega gela. Njihova slabost je v obstojnosti zaradi kratkega roka uporabe in težje ponovljivosti izdelave fantomov. Pri vseh materialih so se pojavili artefakti. Razprava in zaključek: Ugotovili smo, da je meso, izmed vseh izbranih materialov, najprimernejše za simulacijo človeškega tkiva, predvsem zaradi podobne strukture. Medtem ko sta voda in ultrazvočni gel najmanj primerna. Za pridobitev optimalnih slik in zmanjšanja artefaktov bi morali parametre slikanja prilagajati.

Keywords

diplomska dela;radiološka tehnologija;ultrazvok;ultrazvočni fantomi;materiali;posnemanje tkiv;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL ZF - University College of Health Studies
Publisher: [T. Kidrič
UDC: 616-07
COBISS: 76115715 Link will open in a new window
Views: 259
Downloads: 59
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Other data

Secondary language: English
Secondary title: Tissue mimicking ultrasound phantoms
Secondary abstract: Introduction: In the field of diagnostic ultrasound, there are phantoms for quality control and calibration of equipment, and they are also used for education, research work, and to help develop new diagnostic techniques. With the help of phantoms, we simplify and standardize the image environment. Phantoms consist of materials that mimic tissues, within which simple or complex objects that mimic different structures can also be embedded. Commercial phantoms are usually designed for wide markets and therefore cannot be customized. For this reason, custom phantoms are also designed and manufactured on request for specific purposes, different dimensions or to reduce costs. Purpose: The purpose is to find phantoms and materials suitable for the simulation of human tissue from the literature and to evaluate ultrasound images of selected materials through experimental work at the Faculty of Health Sciences. Methods: In the diploma work we used a descriptive method with a review of the literature, which lasted from 22. 10. 2020 to 16. 3. 2021. In the experimental work with the ultrasonic device SonoScape E2 and the associated linear and convex probe, we tested selected materials. Results: Based on the findings from the literature review, we selected tofu, gelatin, meat, water, and ultrasonic gel. In the phantom of tofu we get a homogeneous picture. In the case of gelatin and meat, a mixed signal is visible in the figure. In water and ultrasound gel, however, the picture is inhomogeneous. All selected materials are easily accessible with the exception of ultrasonic gel. Their weakness is in durability due to the short shelf life and more difficult reproducibility of phantom manufacturing. Artifacts appeared in all materials. Discussion and conclusion: We found that meat, of all the selected materials, is the most suitable for simulating human tissue, mainly due to its similar structure. Meanwhile, water and ultrasound gel are the least suitable. In order to obtain optimal images and reduce artifacts, the imaging parameters should be adjusted.
Secondary keywords: diploma theses;radiologic technology;ultrasound;ultrasonic phantoms;materials;tissue mimicking;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Thesis comment: Univ. v Ljubljani, Zdravstvena fak., Oddelek za radiološko tehnologijo
Pages: 62 str.
ID: 13386213