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Reducing bias in dual flip angle T -mapping in human brain at 7T.

To address the systematic bias in whole-brain dual flip angle (DFA) T -mapping at 7T by optimizing the flip angle pair and carefully selecting radiofrequency (RF) pulse shape and duration.

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[Reconstruction of a fracture of the posterior acetabular wall with Pipkin fracture and lesion of the sciatic nerve after dorsal hip dislocation].

A 50-year-old male suffered a crash landing while paragliding and sustained a posterior dislocation of the hip with a Pipkin fracture type 4 (fracture of the posterior acetabular wall and Pipkin fracture type 2) and a lesion of the sciatic nerve. After primary treatment in an external hospital, the patient was transferred to this hospital 4 days following the trauma. An operative stabilization of the acetabular fracture and the Pipkin fracture was performed using a trochanter flip osteotomy. Despite a large central defect of the femoral head it was decided to attempt a reconstruction. Following fixation of the Pipkin fragment an autologous bone graft harvested from the intertrochanteric region was used to fill the defect. Subsequently, a collagen matrix was applied onto the filled defect and a perineural adaptation of the sciatic nerve was performed.

2697 related Products with: [Reconstruction of a fracture of the posterior acetabular wall with Pipkin fracture and lesion of the sciatic nerve after dorsal hip dislocation].

Rabbit anti PKC theta (Ab FDA Standard Frozen Tissu Multiple organ tumor tiss Thermal Shaker with cooli Ofloxacin CAS Number [824 FDA Standard Frozen Tissu Normal rat multiple organ TCP-1 theta antibody Sour Rabbit anti PKC theta (pS Sheep Anti-Theophylline 3 FDA Standard Frozen Tissu Rabbit anti PKC theta (Ab

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Simultaneous T and T mapping of hyperpolarized C compounds using the bSSFP sequence.

As in conventional H MRI, T and T relaxation times of hyperpolarized (HP) C nuclei can provide important biomedical information. Two new approaches were developed for simultaneous T and T mapping of HP C probes based on balanced steady state free precession (bSSFP) acquisitions: a method based on sequential T and T mapping modules, and a model-based joint T/T approach analogous to MR fingerprinting. These new methods were tested in simulations, HP C phantoms, and in vivo in normal Sprague-Dawley rats. Non-localized T values, low flip angle EPI T maps, bSSFP T maps, and Bloch-Siegert B maps were also acquired for comparison. T and T maps acquired using both approaches were in good agreement with both literature values and data from comparative acquisitions. Multiple HP C compounds were successfully mapped, with their relaxation time parameters measured within heart, liver, kidneys, and vasculature in one acquisition for the first time.

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Interpretation of the molecular mechanism of the electroporation induced by symmetrical bipolar picosecond pulse trains.

Picosecond pulse trains (psPTs) are emerging as a new characteristic diagnostic and therapeutic tool in biomedical fields. To specifically determine the stimulus provided to cells, in this article, we use a molecular dynamics (MD) model to show the molecular mechanisms of electroporation induced by symmetrical bipolar psPTs and predict a bipolar cancellation for the studied picosecond pulses. Electric field conditions that do not cause electroporation reveal that the interfacial water molecules continuously flip and redirect as the applied bipolar psPT reverses, and the molecules cannot keep moving in one direction or leave the lipid-water interface. Based on our simulation results, we determine the threshold for electroporation with symmetrical bipolar psPTs. For a fixed electric field intensity, a lower repetition frequency leads to more rapid electroporation. For a fixed repetition frequency, a higher electric field intensity leads to more rapid electroporation. We found that the water dipole relaxation time decreases as the electric field magnitude increases. Additionally, the influences of the symmetrical bipolar psPT intensity and frequency on the pore formation time are presented. Discrete nanoscale pores can form with the applied psPT at terahertz (THz) repetition frequency. When the psPT amplitude increases or the frequency decreases, the number of water bridges will increase. Moreover, for the first time, the molecular mechanism of bipolar cancellation for the studied picosecond pulse is discussed preliminarily. Our results indicate that the influence of the unipolar picosecond pulse on the interfacial water dipoles will accumulate in one direction, but the bipolar picosecond pulse does not cause this effect.

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Cultural Narratives of Micronesian Islander Parent Leaders: Maternal and Children's Health, the School System, and the Role of Culture.

In Oregon in the United States' Pacific Northwest, Native Hawaiians/Pacific Islanders including Micronesian Islanders (MI) substantially grew by 68%; however, research is sparse. This is often due to data aggregation as Asian and Pacific Islanders and community members' reluctance and wariness to participate in research due to a history of unethical research in the Pacific. The MI community experienced miscarriages, stillbirths, and intellectual and developmental disabilities. Organizational MI community leaders expressed a need to explore the voices of MI parent leaders (MIPLs). The purpose of the community-based participatory qualitative descriptive pilot study was to explore the perceptions and experiences of MIPLs with maternal and children's health, the school system, and the influence of culture. A trained MI community health worker recruited eight MIPLs from an urban area of the Pacific northwest in the United States. A group level assessment included illustrative storytelling and is a participant-driven qualitative method that guided data collection and analysis with real-time involvement with MIPL. The discussions lasted for 90 minutes. MIPL shared stories by writing and drawing pictures onto the flip chart papers, transcribed main points, and analyzed the data with researchers. Researchers recorded field notes of the interactions. Researchers debriefed with MIPL to assure trustworthiness and credibility of the findings. MIPL are Compact of Free Association citizens. Their age ranged from 26 to 42 years, have lived in the United States an average of 12.63 years, and most reported having less than $15,000 total household income before taxes. Four main themes were identified: MI cultural identity, English language and MI culture disharmony, zero or delayed prenatal care, and uncertainty for the future of MI children who have disabilities or developmentally delayed as they progress through the school system. Health care providers including nurses and school officials need to have a culturally specific understanding of the MI community and must consider their needs, culture, and language barriers.

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