Ware Finn (noserail3)
Of the ten clinical goals for rectum, bladder, anal canal, and bulbus, the robustly optimized plans violated respectively 0, 1, and 1 goals in the mean, whereas the PTV plans violated 5, 7, and 4 goals. Compared to PTV-based planning, the inclusion of treatment course scenarios in the optimization has the potential to reduce the dose to healthy tissues while retaining a high probability of target coverage. This may reduce the need for adaptive replanning. Presence of a patent ductus arteriosus (PDA) in neonates is assessed by echocardiography. Echocardiographic assessment has disadvantages, primarily its discontinuous nature. We hypothesize that the continuously measured ratio of arterial blood pressures (ABP) at the borders of a window surrounding the systolic peak ratio discriminates non-PDA from PDA patients. Preterm infants (gestational age <32 weeks) with and without PDA were included. Patients were divided into controls (n=8) and PDA patients (n=22), the latter with a subset of patients with closed PDA after three doses Ibuprofen (n=10). For each patient, a six-hour ABP segment from 12 AM to 6 AM on the day of echocardiographic assessment patency or closure of the DA was selected. The mean ratio of the ABP values a samples before and p samples after the systolic peak (R ) was calculated for each segment. If R <1, the patient was predicted to have a PDA. The a and p with the least misclassifications were selected (-64 and +104 ms). R was significantly lower in PDA patients (median 0.95, IQR 0.06) compared to controls (median 1.05, IQR 0.10; p=0.0024). R correctly predicted 19 out of 22 patients (86.4%) and six out of eight controls (75%). R increased after closure in nine out of 10 patients (median 1.01, IQR 0.04; p=0. 0182). R may discriminate preterm PDA patients from non-PDA patients and can be calculated continuously from clinical data measured during standard of care. R ABP may discriminate preterm PDA patients from non-PDA patients and can be calculated continuously from clinical data measured during standard of care.Coaxial type piezoelectric energy generator (C-PEG) nanofiber was fabricated by a self-designed continuous electrospinning deposition system. Piezoelectric PVDF-TrFE nanofiber as an electroactive material was electrospun at a discharge voltage of 9-12 kV onto a simultaneously rotating and transverse moving Cu metal wire at an angular velocity of ω g = 60-120 RPM. The piezoelectric coefficient d33 of the PVDF-TrFE nanofiber was approximately -20 pm V-1. The generated output voltage (V G) increased according to the relationship exp(-α P) (α = 0.41- 0.57) as the pressure (P) increased from 30 to 500 kpa. The V G values for ten and twenty pieces of C-PEG were V G = 3.9 V and 9.5 V at P = 100 kpa, respectively, relatively high output voltages compared to previously reported values. The high V G for the C-PEG stems from the fact that it can generate a fairly high V G due to the increased number of voltage collection points compared to a conventional two-dimensional (2-dim) capacitor type of piezoelectric film or fiber device. C-PEG yarn was also fabricated via the dip-coating of a PDMS polymer solution, followed by winding with Ag-coated nylon fiber as an outer electrode. The current and power density of ten pieces of C-PEG yarn were correspondingly 22 nA cm-2 and 8.6 μW cm-3 at V G = 1.97 V, higher than previously reported values of 5.54 and 6 μW cm-3. The C-PEG yarn, which can generate high voltage compared to the conventional film/nanofiber mat type, is expected to be very useful as a wearable energy generator system.We are exploring a scintillator-based PET detector with potential of high sensitivity, DOI capability, and timing resolution, with single-side readout. Our design combines two previous concepts 1) Multiple scintillator arrays stacked with relative offset, yielding inherent DOI information, but good