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NCT07209579
This retrospective study aims to evaluate the differences in mandibular bone structure between individuals with periodontitis and healthy controls using panoramic radiographs. Fractal analysis and radiomorphometric indices, such as the mental index (MI) and panoramic mandibular index (PMI), will be applied to assess trabecular and cortical bone. The study population includes patients previously diagnosed and treated for periodontitis and healthy individuals with available panoramic radiographs. By comparing bone quality and microarchitecture between the groups, the study seeks to determine the diagnostic value of panoramic radiographs for detecting periodontal bone changes and to provide insights for early diagnosis and treatment planning in dental practice.
NCT04274881
The primary aim of this study is to derive a prediction rule to estimate the required length for placement of the CVC tip at the mid-point of the SVC from simple anatomical landmarks that are consistent with the known surface projections of the great veins. The accuracy of this rule will be examined using TEE and is intended for adult patients undergoing cannulation of the right IJV utilizing a middle approach. As a secondary aim, we will examine the performance of this suggested rule as contrasted with two other popular methods for estimation of the CVC length, the Peres formula and the C-length method.
NCT06442904
The goal of this clinical trial is to learn if a digital education program designed for dental professionals can lead to radiographic examinations of better quality. The main questions it aims to answer are: Does the digital education program lead to more radiographic examinations of good quality? Does the digital education program lead to better theoretical and practical understanding regarding image quality among dental professionals? Researchers will compare answers from a theoretical test and image quality in radiographic examinations between participants with respectively without access to the digital education program. Participants will: * have access to the digital education program for three months * after three months all study participants are invited to answer a theoretical test
NCT06149234
Introduction: Panoramic radiography quality can be impaired by some errors such as positioning errors. Palatoglossal air space shadow error is one of the most common positioning errors and it's due to the tongue not sticking to the roof of the palate. Techniques used to deal with this error might help prevent unnecessary radiation to patients and save them time and money. The study aimed to investigate to investigate the effects of using celluloid matrix and edible tapes (fruit leather and chewing gum) on reducing the palatoglossal air space shadow error in panoramic imaging Methods: In our study, 270 patients referred to the Department of Radiology were randomised into three groups: a control group, a celluloid matrix group, and an edible tapes group. Before panoramic imaging, all patients were instructed to adhere their tongues to the roof of their mouths, with the distinction that for the celluloid matrix and edible tapes groups, patients were asked to place celluloid tapes, fruit leathers, or chewing gums on their tongues before doing so. The routine imaging process was then performed, and the results were compared across groups to evaluate the incidence of palatoglossal air space shadow error. Results: \*\*\* Conclusion: \*\*\*
NCT04407325
Two diagnostic tools for TB screening in high risk groups need additional assessment: the AeoNose™, an 'electronic nose device' for breath sampling, and digital chest X-ray (CXR) with computer aided detection with CAD4TB® software. This study will systematically screen prisoners and its' employees for TB, test the diagnostic performance of AeoNose™ and CAD4TB (both individually and together) as a TB screening tool and and establish Mycobacterium tuberculosis epidemiology in Paraguayan prisons.
NCT03939728
In pediatric intensive care unit of Strasbourg, two exams are easily used for pleural and pulmonary diagnosis : chest radiography, which is the "historic" and reference exam, and commonly systematically the lung ultrasound. However, chest radiography produces radiation and is less accessible in our unit, because it depends on the radiology department. On the opposite, the lung ultrasound doesn't produce radiation, is simple, reliable, easily accessible (the investigators have two ultrasound systems in the unit), and simply and quickly achievable at the patient's bedside, including for less experienced operator. We will evaluate the diagnostic performances of lung ultrasound and chest radiography for pleural and pulmonary diagnosis in pediatric intensive care unit.
NCT04398342
The aim is to describe the characteristics of children with cerebral palsy in Denmark. Furthermore, we want to focus on status of the children's hips.
NCT04403178
Children with cerebral palsy have an increased risk of hip dislocation, which is a painful and severe complication of cerebral palsy. The 20-years evaluation of the Swedish surveillance programme shows that hip dislocation in children with cerebral palsy can be prevented with regular clinical and radiographic examination and early intervention. We would like to determine the individual risk for hip displacement for Danish children with CP in The Danish Cerebral Palsy Follow-up Program. This could be a valuable clinical tool in deciding on further follow-up and treatment.
NCT04481711
Knee osteoarthritis is a common disease that causes pain and loss of function. Total Knee Arthroplasty (TKA) is a frequently used surgical method in the treatment of severe knee osteoarthritis. The aim of this study was to investigate the effect of TKA on IL-6, TNF-α and IL-1β cytokine levels, pain intensity at rest and walking, knee joint valgity angle,malaligment, functional status and knee joint position sense.
NCT04300972
The will compare two different ways of administering contrast media in CT exams of the chest: 1. a fixed dose of contrast medium 2. a weight- and body-type-adapted dose of contrast medium The goal is to see if one protocol is superior to the other in reliably producing diagnostic CT images.
NCT03769142
Arterial hypotension during general anesthesia remains a factor of poor outcomes, increases the risk of myocardial infarction, acute kidney injury and 1-year mortality. Furthermore, arterial hypotension may also decrease cerebral perfusion contributing to worsen neurological outcome. It seems necessary to monitor cerebral perfusion during anesthesia and to define individual dynamic targets of blood pressure. The goal of this study is to evaluate cerebral perfusion change in adult patients with or without cardiovascular risk factors during a standardized propofol-remifentanil anesthesia induction. Cerebral perfusion will be evaluated and compared using the simultaneously measure of TCD, NIRS and BIS. Those measures will be also repeated during and after treatment of arterial hypotension episodes in both groups.
NCT03230994
To set up a Cooperative Network by enrolling 5000 patients with Adenomyosis(AM) from multiple centers.Based on the Network platform and Database,the investigators try to explore the diagnostic strategies for AM and carry out epidemiological survey on the semeiology of AM.In addiction，the investigators expect to conduct research on the effect and the follow-up fertility outcomes of different medical or surgical treatment, the etiology of AM and endometriosis,the perspective investigation of the malignant transformation of AM ;the high-risk factors of AM,and finally propel the formation of Expert Consensus and Clinical Guidelines about AM which suitable to chinese conditions.