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  • 1
    Online-Ressource
    Online-Ressource
    Association of Medical Radiology Engineers in Federation of Bosnia and Herzegovina ; 2020
    In:  Radiološke tehnologije Vol. 11, No. 1 ( 2020-11-07), p. 30-34
    In: Radiološke tehnologije, Association of Medical Radiology Engineers in Federation of Bosnia and Herzegovina, Vol. 11, No. 1 ( 2020-11-07), p. 30-34
    Kurzfassung: Introduction: Today film-based technologies are largely abandoned in dental radiology. New technologies based on digital detectors are being adopted. This change is part of the global digitalization of radiological procedures. A person operating the radiological device needs to be educated and well informed about radiological procedures and technologies, as well as to know how the system operates and to be sure about the dose required for the adequate image quality. The awareness of radiation doses received by patients is necessary for the estimation of risk from ionizing radiation.Material and methods: The aim of this study was to evaluate whether patient doses in intraoral dental radiology affect image quality. The study included subjective analysis of radiological image quality for an intraoral x-ray device with possibility to use both digital and film detector. Subjective assessment of image quality is performed according to criteria taken from the literature and is expressed using the Likert scale, grade 1–5. In order to improve the quality of inferential statistics related ratings to detector quality and image quality were collected, thus introducing two variables: the detector quality index and the technique quality index.Results: Z-test proportions column shows that the number of grades four given as a contrast score is significantly higher in the RVG detector (65%) compared to the film (40%). There is also a significant difference in the number of given grades five as a rating of the apex preview. The share of grades five in film is 19%, while in RVG it is 42%. It is similar in the evaluation of the preview of the dental canal, where there is also a significant difference in the number of given grades five, so that the share in the film is 11% and in RVG 35%.Conclusion: Analysis of the subjective quality of the radiological image in devices for intraoral radiography with the possibility of recording using digital and film detectors indicates that the digital detector is superior to film in low contrast resolution, apex and dental canal preview.
    Materialart: Online-Ressource
    ISSN: 2637-3297 , 2232-8726
    Sprache: Unbekannt
    Verlag: Association of Medical Radiology Engineers in Federation of Bosnia and Herzegovina
    Publikationsdatum: 2020
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    In: Acta Informatica Medica, ScopeMed, Vol. 31, No. 3 ( 2023), p. 222-
    Kurzfassung: Background: Radiotherapy is one of the primary treatment options in cancer management, together with surgery and chemotherapy. Radiation therapy is technologically complex discipline involving professionals with various specialties, and using high energy radiation in treatment of wide range of different cancer types. Technical complexity, increasing number of patients, large workload, and delivery of radiation therapy treatment with lack of human, technical and financial resources in low and middle income countries creates environment with great potential to develop incidents. Emerging need of modern radiation therapy is to develop preventive approach to risk management i to improve the patient safety. Objective: The objective of this research is to identify and assess risk associated with radiation therapy practice in Bosnia and Herzegovina. Methods: An anonymous, voluntary electronic on-line radiation therapy incident reporting system (IRS) was created. IRS consists of four sections containing questions about working environment, incident occurrence, root causes and contributing factors, and incident severity assessment. Data collected using IRS were used to create taxonomy of incidents in radiation therapy. Risk assessment was made using Risk Matrix method. Research was made using the data collected from first 60 incidents reported to IRS. Results: Based on probability and frequency of incident occurrence and severity of consequences, it was assessed that 41.7% of incidents had low risk level (L), 50% of incidents had moderate risk level (M), and 8.3% of incidents had high risk level (H). Radiation therapy risk profile based on risk assessment results clearly shows that incidents with low frequency, low occurrence probability, but high consequences severity level have highest level of risk. Conclusion: The results of this research confirm that the electronic on-line radiation therapy IRS allows the identification and classification of the most significant risk factors in radiotherapy and prevention of serious incidents occurrence.
    Materialart: Online-Ressource
    ISSN: 0353-8109
    Sprache: Unbekannt
    Verlag: ScopeMed
    Publikationsdatum: 2023
    ZDB Id: 2558601-4
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    In: The Lancet, Elsevier BV, Vol. 398, No. 10297 ( 2021-07), p. 325-339
    Materialart: Online-Ressource
    ISSN: 0140-6736
    RVK:
    Sprache: Englisch
    Verlag: Elsevier BV
    Publikationsdatum: 2021
    ZDB Id: 2067452-1
    ZDB Id: 3306-6
    ZDB Id: 1476593-7
    SSG: 5,21
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    In: Journal of Health Sciences, University of Sarajevo Faculty of Health Sciences, ( 2021-12-17)
    Kurzfassung: Introduction: Axial-loaded magnetic resonance imaging (MRI), which can simulate an upright position of the patient may cause a significant reduction of the dural sac cross-sectional area (DCSA) compared with standard MRI, thus providing valuable information in the assessment of the lumbar spinal canal. The purpose of this study was to investigate excessiveness of the change in DCSA and depth of lateral recesses (DLRs) before and after axial-loaded imaging in relation to body mass index (BMI) of the subjects.Methods: Twenty patients were scanned to evaluate DCSA and DLR at three consecutive lumbar spine intervertebral disc levels (L3/4, L4/5, and L5/S1) on conventional-recumbent MRI, and after axial loading were applied.Results: Axial-loaded MRI demonstrates a significant difference of DSCA in comparison to conventional MRI. Furthermore, results show a significant correlation between the DCSA and BMI on level L3/L4, both before and after axial loading MRI. With axial loading, there is a reduction of DSCA of 12.2%, 12.1%, and 2.1% at the levels L3/L4, L4/L5, and L5/S1, respectively. After axial loading has been applied, the depth of the neural foramen has been reduced by an average of 10.1%.Conclusion: Axial-loaded MRI reduces DCSA and DLRs in comparison to standard MRI. Information obtained in this way may be useful to explain the patient’s symptomatology and may provide an additional insight that can influence the treatment decision plan accordingly.
    Materialart: Online-Ressource
    ISSN: 1986-8049 , 2232-7576
    Sprache: Unbekannt
    Verlag: University of Sarajevo Faculty of Health Sciences
    Publikationsdatum: 2021
    ZDB Id: 2709694-4
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
    In: Diagnostics, MDPI AG, Vol. 13, No. 2 ( 2023-01-16), p. 328-
    Kurzfassung: Computed tomography (CT) is a diagnostic imaging process that uses ionising radiation to obtain information about the interior anatomic structure of the human body. Considering that the medical use of ionising radiation implies exposing patients to radiation that may lead to unwanted stochastic effects and that those effects are less probable at lower doses, optimising imaging protocols is of great importance. In this paper, we used an assembled 3D-printed infant head phantom and matched its image quality parameters with those obtained for a commercially available adult head phantom using the imaging protocol dedicated for adult patients. In accordance with the results, an optimised scanning protocol was designed which resulted in dose reductions for paediatric patients while keeping image quality at an adequate level.
    Materialart: Online-Ressource
    ISSN: 2075-4418
    Sprache: Englisch
    Verlag: MDPI AG
    Publikationsdatum: 2023
    ZDB Id: 2662336-5
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    Online-Ressource
    Online-Ressource
    Institute of Knowledge Management (Publications) ; 2022
    In:  KNOWLEDGE - International Journal Vol. 54, No. 4 ( 2022-09-30), p. 603-610
    In: KNOWLEDGE - International Journal, Institute of Knowledge Management (Publications), Vol. 54, No. 4 ( 2022-09-30), p. 603-610
    Kurzfassung: Contouring, planning and dose calculation in treatment planning systems (TPS) are based on computedtomography (CT) images. Therefore, it is important to have developed, optimized and adapted scanning protocolsfor specific anatomic regions and special radiotherapy modalities such as stereotactic radiosurgery (SRS). The aimof this study was to determine influence of tube voltage, field of view size (FOV) and reconstruction kernels on CTnumbers and the resulting radiotherapy (RT) dose calculation.This study was performed at Clinic of Oncology, Clinical Center University of Sarajevo. Verification electrondensity and CT number values was performed using CIRS Thorax 002LFC phantom, while anthropomorphic CIRS038 phantom for stereotactic end-to-end verification was used for the purpose of dose plan calculation analysis withlarge bore CT simulator Canon Aquillion LB.The significant correlation between the tube voltage and the measuredvalues of CT numbers is significant for all materials (p 〈 0.05), except for water (p = 0.310). No significantcorrelation between FOV and obtained values of CT numbers was found in any of the evaluated tissue equivalentmaterials. Evaluating the impact of reconstruction kernels on Hounsfield units (HU), significant deviations werefound for the FC62, FC68 and FC07 reconstruction kernels. Also, analyzing the influence of reconstruction kernelson the RT dose calculation, the extreme values are associated with Dmin/D in PTV for kernels FC41 and FC68, wheredeviations from the values obtained using the baseline scanning parameters were -1.3% and -1.9%. For deviation of1 HU in muscle tissue of CIRS 002LFC, the calculated Dmin/D in PTV of CIRS STEEV phantom will reduce by0.79%. Similarly, the reduction of D₉₈ and D₂ would be 6.8 cGy and 3.03 cGy for 1 HU, respectively. Change of thereconstruction kernels caused differences of 0.4% in Dmin/D calculation in clinical target volume (CTV).CT scanning and reconstruction parameters may affect Hounsfield units, which could have an impact on dosecalculations in RT plan. Hence, it is recommended to standardize the scanning protocol used in calibration curvegeneration for TPS. One should avoid use of different tube voltages and kernels, while according to this study, thechange of FOV will have no impact on dose calculations
    Materialart: Online-Ressource
    ISSN: 2545-4439 , 1857-923X
    Sprache: Unbekannt
    Verlag: Institute of Knowledge Management (Publications)
    Publikationsdatum: 2022
    ZDB Id: 3049213-0
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    In: Journal of Health Sciences, University of Sarajevo Faculty of Health Sciences, ( 2020-10-10)
    Kurzfassung: Introduction: Intervertebral disc (IVD) degeneration (IDD) is one of the main causes of low back pain (LBP). Standardized diagnostic algorithms for adequate estimation and classification of changes of lumbar discs are mandatory before starting with therapy.Methods: One hundred patients who were indicated for lumbar magnetic resonance imaging (MRI) were included in the study. Pfirrmann grading system was used for the determination of IDD, while the visual analog scale (VAS) is used for evaluation of the intensity of LBP. To quantification of disability for LBP, we used the Oswestry Disability Index (ODI).Result: Results showed higher Pfirrmann grades II and III for L2/L3 and L3/L4 lumbar levels and lower scores at L4/L5 and L5/S1. The analysis also showed low scores at the L2/3 and L3/4 lumbar level for Pfirrmann grades IV and V, and there was an increased at more inferior lumbosacral levels L4/5 and L5/S1. There was a significant correlation between Pfirrmann grades and ODI (p = 0.24) as well as VAS (p = 0.16).Conclusion: Higher Pfirrmann grades correlated with increased ODI and VAS. Therefore, MRI can be used as a strong indicator of clinical appearance, but it is important to take into consideration that LBP should be correlated with clinical features. By summing Pfirrmann grades of all lumbar intervertebral levels in each patient, we can get more accurate insight for the status of the lumbar spine.
    Materialart: Online-Ressource
    ISSN: 1986-8049 , 2232-7576
    Sprache: Unbekannt
    Verlag: University of Sarajevo Faculty of Health Sciences
    Publikationsdatum: 2020
    ZDB Id: 2709694-4
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    Online-Ressource
    Online-Ressource
    University of Sarajevo Faculty of Health Sciences ; 2022
    In:  Konferencija radioloških tehnoogija s međunarodnim učešćem - CORT
    In: Konferencija radioloških tehnoogija s međunarodnim učešćem - CORT, University of Sarajevo Faculty of Health Sciences
    Kurzfassung: Uvod: Radioterapija je kompleksna disciplina koja uključuje širok spektarstanja izazvanih malignim oboljenjima, organizacionu kompleksnost i upotrebu naprednih tehnoloških rješenja u terapiji, te ima veliki potencijal za razvoj incidenata.Incidenti, u zavisnosti od stepena ozbiljnosti, mogu kompromitirati efekat radioterapije, dovesti do izostanka kontrole bolesti i njenog recidiva ili pojave ranih i kasnih komplikacija na zdravim organima u smislu radiotoksičnosti. Ozbiljni incidenti u radioterapiji su rijetki, ali kada se dese, njihove posljedice mogu biti značajno oštećenje zdravlja ili smrt. Incidenti nisu posljedica slučajnog toka događaja, niti koincidencije koja će se teško ponoviti. Pojava incidenata ima svoje zakonitosi i posljedica je sistemskih postavki, uslova i procesa. Cilj ovog istraživanja je procijeniti mogućnost upotrebe elektronskog sistema za prijavljivanje incidenata u upravljanju rizikom u radioterapiji. Metode: Za potrebe istraživanja razvijen je elektronski sistem za prijavljivanje incidentata u formi strukturiranog kompjuterskog intervjua prema ROSEIS metodologiji. Na osnovu informacija prikupljenih pomoću sistema napravljena je taksonomija incidenata prema: vrsti, mjestu i načinu nastanka, načinu detekcije, uzroku nastanka i faktorima doprinosa, dozimetrijskom i kliničkom značaju, te ozbiljnosti posljedica. Procjena rizika je napravljena upotrebom Risk Matrix metode. Rezultati: U rezultatima su prikazani najčešći uzroci nastanka i faktori promocije incidenata u radioterapiji, kao i njihova povezanost sa faktorima radnog okruženja, organizacije i upravljanja, finanasijskim i ljudskim resursima, radnim opterećenjem, radioterapijskim uređajima, softverom i tehnološkom kompleksnošću tretmana.Predložene su korektivne i preventivne mjere, te data procjena njihove efektivnosti na poboljšanje detekcije, redukciju vjerovatnoće pojave incidenata i redukciju njihove magnitude. Zaključci: Rezultati istraživanja pokazuju da su informacije prikupljene pomoću elektronskog sistema za prijavljivanje incidenata dobar prerekvizit za razvoj sistema upravljanja rizikom koji omogućava identifikaciju i klasifikaciju najznačajnijih faktora rizika u radioterapiji, kao i utvrđivanje specifičnih preventivnih i korektivnih akcija s ciljem prevencije pojave incidenata i redukciju ozbiljnosti njihovih neželjenih efekata.
    Materialart: Online-Ressource
    ISSN: 2831-0748 , 2831-073X
    Sprache: Kroatisch
    Verlag: University of Sarajevo Faculty of Health Sciences
    Publikationsdatum: 2022
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    Online-Ressource
    Online-Ressource
    Association of Medical Radiology Engineers in Federation of Bosnia and Herzegovina ; 2021
    In:  Radiološke tehnologije Vol. 12, No. 1 ( 2021-11-30), p. 27-31
    In: Radiološke tehnologije, Association of Medical Radiology Engineers in Federation of Bosnia and Herzegovina, Vol. 12, No. 1 ( 2021-11-30), p. 27-31
    Kurzfassung: Introduction: The knee joint has a unique anatomical structure in the human body. The localization between the two longest bones in the human body – femur, and tibia – makes it prone to injuries, trauma, and other pathologies. Clinical examination of the joint is still the primary method in evaluating the condition of the patient's knee. The study aims to determine the diagnostic accuracy of clinical examination and magnetic resonance (MR) in assessing chondral lesions of knee joint using arthroscopy as a reference standard.Patients and methods: The examination was conducted on 94 patients (58 males and 36 females) with knee injuries. Clinical examination indicated a primary chondral lesion of knee cartilage in eight patients (five men and three women), with an average age of 45.75. Besides the clinical examination, the diagnostics were performed using MR imaging by Siemens of 0.5 Tesla, and arthroscopy was performed using Storz arthroscope.Results: Our research has generated the following values of clinical and MR results for chondral lesions: Sensitivity (Se) = 12.5%, Specificity (Sp): could not be calculated, Positive Predictive Value (PPV) = 100%, Negative Predictive Value (NPV) = 0% and Accuracy (ACC) = 12.5%. The accuracy of clinical and intraoperative results for chondral lesion was: Se =100%, Sp: could not be calculated, PPV = 100%, NPV: could not be calculated, and ACC = 100%. MR imaging and arthroscopy findings of chondral lesion showed: Se = 100%, Sp = 0%, PPV = 12.5%, NPV: could not be calculated and ACC = 12.5%. In comparing the clinical sign and MRand intraoperative result, Positive Predictive Value for patients with chondral lesion was maximal (100%), while comparing MR with the intraoperative result, Positive Predictive Value was 12.5%. In comparison between clinical sign and intraoperative results, the accuracy for patients with chondral lesion was 100%, while comparing the clinical sign with MR result and MR with the intraoperative result, the accuracy was 12.5%.Conclusion: Our examinations have shown that MR examination is not currently as valid for diagnosing injury of chondral cartilage of knee as the medical community or patients have anticipated it.
    Materialart: Online-Ressource
    ISSN: 2637-3297 , 2232-8726
    Sprache: Unbekannt
    Verlag: Association of Medical Radiology Engineers in Federation of Bosnia and Herzegovina
    Publikationsdatum: 2021
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    In: Acta Informatica Medica, ScopeMed, Vol. 30, No. 1 ( 2022), p. 36-
    Materialart: Online-Ressource
    ISSN: 0353-8109
    Sprache: Unbekannt
    Verlag: ScopeMed
    Publikationsdatum: 2022
    ZDB Id: 2558601-4
    Standort Signatur Einschränkungen Verfügbarkeit
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