View clinical trials related to Image, Body.
Filter by:The investigators aim to implement an innovative imaging tool for detection of sodium level changes in-vivo with a clinical magnetic resonance (MR) scanner system. Conventionally, MR imaging (MRI) is performed with the use of proton imaging. Nevertheless, detection of other nuclei such as sodium (23Na) are possible with dedicated radio frequency sequences and radio frequency antennas tuned to the lower radio frequency of sodium. Non-invasive detection of sodium level changes has great potential as a precursor of organ deficiency and possible organ failure. This project seeks to determine a robust method for detection and characterization of sodium levels with MRI. The sodium levels of the kidneys are known to change throughout the day. Therefore, an evaluation of the kidney circadian sodium level variation is performed. In the proposed project, the investigators will scan two groups divided into two separate studies: Healthy controls for optimization of imaging (n = 5, scanned twice) Healthy controls for comparison of circadian variation (n = 10, scanned triple on one day) Sodium MRI could greatly improve the understanding and diagnostic capabilities of several medical conditions. If successful, the proposed project will serve as the groundwork for future clinical studies.
Patients receiving a point-of-care ultrasound will be randomized into a portable, handheld device or a traditional cart-based ultrasound machine to compare diagnostic capability.
Previous report showed that 37% of patients with moderate to severe carbon monoxide (CO) poisoning experienced a myocardial injury, defined as elevated cardiac enzyme [creatine kinase, CK-MB, and cardiac troponin I (TnI)] or ischemic electrocardiogram (ECG) change. In other study, 24% of the patients with the myocardial injury after CO poisoning died during a median follow-up of 7.6 years. The myocardial injury was the major predictor of mortality. In addition, in the Taiwanese nationwide population-based cohort study, CO poisoning itself reported as a higher risk of a major adverse cardiovascular event. According to the previous study of investigators, among CO poisoned patients with myocardial injury, 74.4% of patients experienced CO-induced cardiomyopathy. All CO-induced cardiomyopathy recovered to normal status. In this situation, there is no definite approved reason why more cardiovascular events are occurred in CO poisoned patients with myocardial injury during long term follow-up period despite normalization of CO-induced elevated TnI and cardiac dysfunction. Two image cases related to cardiac magnetic resonance imaging (CMR) in acute CO poisoning previously reported. One image case reported that patient had mildly depressed left ventricular (LV) systolic function with hypokinesis of the anterior wall and regional akinesis of the inferior wall on the transthoracic echocardiography performed during hospitalization and late gadolinium-enhancement (LGE) images of CMR demonstrated multiple focal areas of high signal consistent with myocardial necrosis or fibrosis. Another image case reported an image case that in CMR, inferolateral mid-wall myocardial fibrosis, which was defined as LGE, was present despite the setting of a completely normal echocardiogram at 4-month follow-up in CO poisoned patients. Therefore, the investigators evaluate prevalence (frequency of LGE positive) and patterns (involved LV wall and range of LGE positive) of myocardial fibrosis (LGE positive) in acute CO-poisoned patients during acute (within seven days after CO exposure) and chronic phase (at 4-5 months after CO exposure) and whether LGE positive developed in acute phase have been changed through cardiac MRI performed at chronic phase. The investigators also evaluate LV ejection fraction and global longitudinal strain in transthoracic echocardiography performed at the ED (baseline) and within seven days (follow-up). The investigators also assessed the association between neurocognitive outcomes using the global deterioration scale (at 1, 6, and 12 months after CO exposure) and the presence of LGE positive.
The employ of medical images combined with deep neural networks to assist in clinical diagnosis, therapeutic effect, and prognosis prediction is nowadays a hotspot. However, all the existing methods are designed based on the reconstructed medical images rather than the lossless raw data. Considering that medical images are intended for human eyes rather than the AI, we try to use raw data to predict the malignancy of pulmonary nodules and compared the predictive performance with CT. Experiments will prove the feasibility of diagnosis by CT raw data. We believe that the proposed method is promising to change the current medical diagnosis pipeline since it has the potential to free the radiologists.
Obstetric brachial plexus palsy (OBPP) is the paralysis of the ipsilateral upper extremity after a brachial plexus injury that occurs during labor. Imagery is to rehearse sensorial experiences in the mind such as auditory, visual, tactile, olfactory, gustatory or kinesthetic sensation. Imagery is used as a new technique in rehabilitation recently. Various studies have reported the importance of imagery and using imagery as a rehabilitation technique in different neurologic and orthopedic conditions. This study aimed to evaluate imagery ability in children with OBPP.
The main objective is to compare the prevalence of anal incontinence (AI) before and after bariatric surgery in obese patients. Inclusion: Patients who are scheduled for a bariatric surgical procedure after a multidisciplinary evaluation for about 1 year (following french national recommendations). Primary objective: After inclusion, all patients will fill in a specific self-questionnaire evaluating AI (PFDI-20 score) before surgery and at 6 months after surgery. Investigators will evaluate the prevalence of anal incontinence before and at 6months after surgery using this PFDI- 20 score. In those patients with preoperative anal incontinence (only in patients with 3 positive answers to question n°9,10, and 11 of PFDI-20 score self-questionnaire), a pelvic MRI will be performed before and at 6 months after surgery. Consequently, no further imaging exam will be performed in patients without preoperative anal incontinence (less than 3 positive answers to question n°9,10, and 11), Secondary objectives: - to evaluate the AI severity variation before and at 6 months after bariatric surgery regarding the percentage of postoperative weight loss. - to compare the quality of life (PFIQ-7 score) related to AI day before and at 6 months after bariatric surgery.
The aim of this study was to evaluate the efficacy of a novel approach with a motor imagery-based exercise program versus conventional rehabilitative approach in fibromyalgia syndrome (FM): reduction of pain was set as the primary outcome.
Radiomics is an attractive field in objectively quantifying image features, and may overcome the subjectivity of visually interpreting computed tomography (CT), or positron emission tomography (PET). It is reported that the features related to treatment response, outcomes, tumor staging, tissue identification, and cancer genetics. Therefore, the investigators try to explore the key features for the outcome of lung cancer patients.
Pediatric head trauma is a leading cause of morbidity and mortality for children/adolescents. The current standard of care regarding imaging modality when concerned for an acute head injury is CT. This exposes children to radiation that may predispose to future malignancy. Rapid MRI is a test that eliminates radiation and has expanded uses in multiple other areas. This study is evaluating it for pediatric acute head trauma.
Motor imagery is the mental representation of movement without any body movement. According to recent studies motor imagery contains three strategies to mentally simulate the movements: internal visual, external visual and kinesthetic imagery. Motor imagery is associated with cortical reorganization and functional improvements and it does not only related with motor performance, it also influces cognitions. Movement Imagery Questionnaire-3 (MIQ-3) is the recent, modified version of the Movement Imagery Questionnaire-Revised, Second Edition and measures imagery ability in terms of ease of imagery. The aim of this study is to translate MIQ-3 into Turkish and evaluate its test-retest reliability for Turkish-speaking population.