20.500.12556/RUL-174669 Primerjava kakovosti ehokardiografskih posnetkov na začetku in koncu klinične prakse: vloga radiološkega inženirja - sonograferja magistrsko delo Comparison of the quality of echocardiographic images at the beginning and end of clinical placement: the role of cardiac sonographer master thesis Uvod: Ehokardiografija je neinvazivna slikovna metoda za oceno srčne anatomije in funkcije. Radiološki inženir – sonografer ima pomembno vlogo pri pridobivanju kakovostnih ehokardiografskih posnetkov, ustrezni nastavitvi ultrazvočne opreme ter izvajanju meritev. Namen: Namen je bil oceniti kakovost ehokardiografskih posnetkov in Dopplerjevih meritev študentk magistrskega študija Radiološke tehnologije, modula Ultrazvok srca. S primerjavo posnetkov z začetka in konca 10-tedenske klinične prakse smo ovrednotili napredek študentk pri izvajanju TTE preiskav. Metode dela: Uporabili smo deskriptivno metodo in retrospektivno raziskavo, ki smo jo izvedli na Oddelku za neinvazivne preiskave srca v UKC Ljubljana. Analizirali smo 30 ehokardiografskih preiskav z začetka in 30 s konca klinične prakse. Ehokardiografske posnetke sta ocenjevala dva specialista kardiologa in en specializant kardiologije. Ocenjevali so kakovost treh standardnih pogledov (PLAX, A4C in A2C) ter kakovost PW in CW Dopplerjevih signalov čez aortno zaklopko. Rezultati: Povprečne ocene vseh petih lastnosti, ki smo jih ocenjevali pri treh osnovnih projekcijah – PLAX, A4C in A2C – so bile višje ob koncu klinične prakse kot na začetku. Pri A2C projekciji je bila največja razlika pri prikazu standardnega pogleda (0,55 oz. 14 %), pri prikazu ključnih anatomskih struktur (0,35 oz. 9 %) in pri splošni oceni posnetka (0,37 oz. 9 %). Pri PLAX in A4C projekciji ne obstajajo statistično značilne razlike med ocenjevanimi lastnostmi (p > 0,05), pri A2C projekciji pa obstajajo statistično značilne razlike pri prikazu standardnega pogleda (p = 0,003) z boljšimi rezultati ob koncu klinične prakse. Prav tako so bile povprečne ocene vseh treh lastnosti pri ocenjevanju kakovosti PW in CW Dopplerjevih signalov višje ob koncu klinične prakse. Pri primerjavi CW Dopplerjevih signalov ni bilo statistično značilnih razlik za nobeno ocenjevano lastnost. Pri PW Dopplerjevih signalih pa smo ugotovili statistično značilne razlike pri položaju osnovne linije (p = 0,018) in pri splošni oceni posnetka (p = 0,043) z boljšimi rezultati ob koncu klinične prakse. Razprava in zaključek: Študentki sta v desetih tednih klinične prakse dosegli napredek pri izvajanju TTE preiskav, največji pri A2C projekciji in meritvah PW Dopplerjevih signalov čez aortno zaklopko. Število pravilnih projekcij se je statistično značilno povečalo, kar potrjuje napredek v tehničnem znanju in samostojnosti. Introduction: Echocardiography is a non-invasive imaging technique used to assess the anatomy and function of the heart. Cardiac sonographers play an important role in obtaining high-quality echocardiographic images, correctly setting ultrasound parameters and performing post-examination measurements. Purpose: The purpose of the study was to evaluate the quality of echocardiographic images and Doppler measurements performed by master students in the cardiac ultrasound module. We compared echocardiographic images at the beginning and end of the 10-week clinical placement to assess students’ progress in performing transthoracic echocardiography (TTE). Methods: A descriptive method and a retrospective study conducted at the Department of Non-Invasive Cardiac Imaging Unit, University Medical Centre Ljubljana were used. We analyzed 30 echocardiographic examinations from the beginning and 30 from the end of the clinical placement. The echocardiographic images were assessed by two cardiology specialists and one cardiology resident. They evaluated the quality of the three standard views (PLAX, A4C and A2C) as well as the pulsed (PW) and continuous wave (CW) Doppler signals across the aortic valve. Results: All five evaluated features in the three standard views – PLAX, A4C, and A2C – were better in the end. The greatest improvement was for the A2C view in the standard view (0.55 or 14%), visualization of major anatomic structures (0.35 or 9%), and overall image quality score (0.37 or 9%). No statistically significant differences were found for the PLAX and A4C views (p > 0.05), while statistically significant differences were found for the A2C view in the standard view (p = 0.003) with better results at the end of the clinical placement. The mean values for the quality of PW and CW Doppler signals were also higher at the end of clinical placement. No statistically significant differences were found for CW Doppler signals. For PW Doppler signals, statistically significant differences were found in the baseline position (p = 0.018) and in the overall image quality score (p = 0.043), again in favor of the end of placement. Discussion and conclusion: The study showed significant improvement in students’ TTE performance during the 10-week clinical placement. There was a statistically significant increase in the number of correct images. The greatest improvements were seen in the A2C view and PW Doppler measurements across the aortic valve. magistrska dela radiološka tehnologija ultrazvok ehokardiografija radiološki inženirji sonografer kakovost posnetkov klinična praksa master's theses radiologic technology ultrasound echocardiography radiographers cardiac sonographer image quality clinical placement true false false [L. Pogorevčnik] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-10-08 12:25:14 2025-10-08 12:25:21 2025-11-27 03:31:16 0000-00-00 00:00:00 2025 0 Ljubljana 0 Ljubljana 77 str., [2] str. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 616-07 153131 252390147 53799.pdf 53799.pdf 1 8E44561EC6E846917D76B55BACA0843D 7893b055731c6b487863cb74442e3bdfa41c08cf6d2486eaedc12eb085ea84d8 df5f398e-a430-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=219528 Zdravstvena fakulteta 0 0 0