Dependence of the Raman vibration modes on structural properties of Tm:(ScY)O laser ceramics with 0 ≤ x < 1.

We report on micro-Raman spectra of several mixed laser ceramics, i.e., 5at.

The Value of a Coronary Computed Tomography Angiography plus Stress Cardiac Magnetic Resonance Imaging Strategy for the Evaluation of Patients with Chronic Coronary Syndrome.

Noninvasive imaging methods, either anatomical or functional tests, serve as essential instruments for the appropriate management of patients with established or suspected coronary artery disease (CAD). We sought to evaluate the safety and efficacy of a coronary computed tomography angiography (CCTA) plus stress cardiac magnetic resonance imaging (S-CMR) strategy in patients with chronic coronary syndrome (CCS). Patients with suspected CCS showing intermediate coronary plaques (stenosis 30-70%) at CCTA underwent S-CMR.

Case Report: Three-Dimensional Printing Model for Surgical Planning of Left Ventricular Aneurysm: Evolution Toward Tailoring Surgery.

A 59-year-old woman was admitted to the emergency department for heart failure (HF), New York Heart Association (NYHA) IV, showing an anterior, evolved myocardial infarction (MI) with a wide apical left ventricular aneurysm (LVA), ejection fraction (EF) 24%, and global longitudinal strain (GLS) -5. 5% by echo. Cardiac magnetic resonance imaging (MRI) confirmed an apical LVA without thrombus, EF 20%, and a transmural delayed enhancement in the myocardium wall.

Achievements and Future Perspectives of the Trivalent Thulium-Ion-Doped Mixed-Sesquioxide Ceramics for Laser Applications.

This paper is devoted to reviewing the latest results achieved in solid-state lasers based on thulium-doped mixed-sesquioxide ceramics, i.e., (Lu,Sc,Y)O.

MitraClip implantation in real-world: clinical relevance of different patterns of left ventricular remodeling.

Objective: The role of left ventricular (LV) volumes and ejection fraction (EF) in the selection of patients for the MitraClip procedure remains matter of debate. The goal of this study is to assess the pattern of LV remodeling and its clinical implications after MitraClip procedures, and to evaluate the role of LV ejection fraction (EF) in patient selection.

Methods: Complete echocardiography was performed before, at discharge, 1,6, and 12-months in 45 patients treated with MitraClip for severe mitral regurgitation (MR) [age 78.

Predicting Mortality Risk in Older Hospitalized Persons With COVID-19: A Comparison of the COVID-19 Mortality Risk Score with Frailty and Disability.

Objectives: To assess the association of pre-morbid functional status [Barthel Index (BI)] and frailty [modified Frailty Index (mFI)] with in-hospital mortality and a risk scoring system developed for COVID-19 in patients ≥75 years diagnosed with COVID-19.

Design: Retrospective bicentric observational study.

Setting And Participants: Data on consecutive patients aged ≥75 years admitted with COVID-19 at 2 Italian tertiary care centers were collected from February 22 to May 30, 2020.

Time- and Temperature-Dependent Luminescence of Manganese Ions in Ceramic Magnesium Aluminum Spinels.

Samples of magnesium aluminum spinel ceramics doped with manganese ions were prepared by a high-temperature solid-state reaction method; their potential as red-emitting phosphors was analyzed using a time-resolved luminescence spectroscopy technique, from room temperature to 10 K. It was found that in the red spectral range, the luminescence spectra of manganese ions in the MgAlO spinel showed a narrow band peaking at 651 nm due to the emission of Mn and a broader emission band in the region of 675 ÷ 720 nm; the ratio of intensities for these bands depends on the synthesis conditions. By applying a special multi-step annealing procedure, the MgAlO:Mn phosphor containing only tetravalent manganese ions, Mn, was synthesized.

Long-Term Durability of Transcatheter Aortic Valve Implantation With Self-Expandable Valve System (from a Real-World Registry).

As transcatheter aortic valve Implantation (TAVI) moves to younger and lower risk patients with longer life expectancy, the long-term durability of TAVI is becoming an increasingly relevant issue. We sought to evaluate the long-term clinical outcome and prosthesis performance of the CoreValve self-expandable valve. Clinical registry of 182 patients consecutively treated with TAVI in a tertiary center from January 2009 to July 2017.

Clinical risk score to predict in-hospital mortality in COVID-19 patients: a retrospective cohort study.

Objectives: Several physiological abnormalities that develop during COVID-19 are associated with increased mortality. In the present study, we aimed to develop a clinical risk score to predict the in-hospital mortality in COVID-19 patients, based on a set of variables available soon after the hospitalisation triage.

Setting: Retrospective cohort study of 516 patients consecutively admitted for COVID-19 to two Italian tertiary hospitals located in Northern and Central Italy were collected from 22 February 2020 (date of first admission) to 10 April 2020.

A Comprehensive Characterization of a 10 at.% Yb:YSAG Laser Ceramic Sample.

We report a comprehensive characterization of a 10 at.% Yb-doped YSAG (Yb:Y₃ScAlO, x = 1.5) ceramic, including microstructural, spectroscopic and laser properties.

Spectroscopic and laser characterization of Yb:(LuY)AlO ceramics with different Lu/Y balance.

We report a broad comparative analysis of the spectroscopic and laser properties of solid solution Lutetium-Yttrium Aluminum Garnet (LuYAG, (LuY)AlO) ceramics doped with Yb. The investigation was mainly aimed to assess the impact of the Lu/Y ratio on the Yb optical and laser properties. Therefore we analyzed a set of samples with different Y/Lu balance, namely 25/75, 50/50 and 75/25, with 15% Yb doping.

First laser emission of Yb:(LuY)AlO ceramics.

We report the first laser oscillation on Yb:(LuY)Al ceramics at room temperature. At 1030 nm we measured a maximum output power of 7.3 W with a corresponding slope efficiency of 55.

Characterization of the lasing properties of a 5%Yb doped Lu₂SiO₅ crystal along its three principal dielectric axes.

The laser performance of a 5% Yb doped Lu2SiO5 (Yb:LSO) has been investigated in quasi continuous-wave pumping regime along the three principal dielectric axes of the crystal, to obtain a complete characterization of its laser properties. The comparison among the obtained results for differently polarized lasers, in term of relative slope efficiency and absolute efficiency, allows the exploitability of different orientations of the material in order to be determined to obtain efficient laser sources. The laser slope efficiency and the energy conversion efficiency were similar for emission polarized along the three indicatrix axes, with noticeable maximum values of slope efficiency around 90% for polarization along the Y and Z axes.

Experimental evidence of a nonlinear loss mechanism in highly doped Yb:LuAG crystal.

We report a rigorous study of the spectroscopic, laser and thermal properties of a 10at.% and a 15at.% Yb:LuAG crystals.

High efficiency laser action of 1% at. Yb3+:2O3 ceramic.

We report the spectroscopic characteristics and the laser performances of a low-doped 1% at. Yb:Sc(2)O(3) ceramic sample. Under end- pumping at 933 nm and 968 nm in quasi-CW mode, at 1040.

First laser oscillation and broad tunability of 1 at. % Yb-doped Sc2O3 and Lu2O3 ceramics.

We report the first oscillation achieved on 1 at. % Yb-doped Sc2O3 and Lu2O3 ceramics under quasi-CW pumping at 968 nm. With Sc2O3 we measured a maximum output power of 2.

Effects of the excitation density on the laser output of two differently doped Yb:YAG ceramics.

We report the behavior of two Yb(3+) doped ceramics (i.e. 10% at.

Tunability enhancement of Yb:YLF based laser.

We present a comprehensive characterization of a laser, based on a high-quality heavily doped Yb:YLF crystal. The analysis includes the comparison of the laser efficiency in respect of the absorbed pump for both pi and sigma-polarization. In particular, for the tunable laser, we report an enhancement of the tuning range obtained by adapting the output coupler transmission in respect of the lasing wavelength.

High-efficiency, high-power and low threshold Yb3+:YAG ceramic laser.

We present a high-power, high-efficiency and low threshold laser prototype based on doped ceramic Yb(3+):YAG. We achieved an output power of 9 W with a slope efficiency of 73% and a threshold of 1 W at 1030 nm in quasi-Continuous Wave (QCW). Moreover, we obtained an output power 7.

Direct comparison of Yb3+:CaF2 and heavily doped Yb3+:YLF as laser media at room temperature.

We report an extensive comparison of the laser performances of diode-pumped Yb(3+):YLF (30% at.) and Yb(3+):CaF(2) (5% at.) crystals, lasing at room-temperature and operating in two different operation mode, i.

High efficiency room temperature laser emission in heavily doped Yb:YLF.

We report the tunable, CW and quasi CW laser operation at room temperature of an highly doped (30% at.) Yb:YLF crystal longitudinally pumped by a fiber coupled laser diode array. The CW output power is 1.