Detection of focal cortical dysplasia: Development and multicentric evaluation of artificial intelligence models.

Objective: Focal cortical dysplasia (FCD) is a common cause of drug-resistant focal epilepsy but can be challenging to detect visually on magnetic resonance imaging. Three artificial intelligence models for automated FCD detection are publicly available (MAP18, deepFCD, MELD) but have only been compared on single-center data. Our first objective is to compare them on independent multicenter test data.

Europium Lithosilicates LiEuSiN and LiEuSiO-Crystal Structures and Luminescence.

With LiEuSiN, the end member of the solid-solution series set up by substituting the divalent cation in the well-known host materials LiCaSiN and LiSrSiN with Eu(II) could be synthesized and described by means of single-crystal X-ray diffraction and single-grain luminescence spectroscopy. The new compound crystallizes isotypically to LiCaSiN and LiSrSiN in cubic space group 3̅ (no. 205) with a lattice parameter of = 10.

A Comparative Study of a High-Pressure Polymorph of IO and its Ambient-Pressure Modification.

A hitherto unknown modification of IO was obtained from high-pressure/high-temperature syntheses in a Walker-type multianvil device at 8 GPa and 250 °C. HP-IO crystallizes in the monoclinic crystal system with space group P2/c (no. 14) with the unit cell parameters a=12.

Isomorphism of Sr[LiAlO] and Sr[LiGaO] - Syntheses, Crystal Structure, and Europium(II) Luminescence.

While highly efficient red-emitting inorganic phosphors have been discovered in the substance class of alkaline earth oxo(nitrido)lithoaluminates, new narrow-band green- and yellow-emitting components are being sought to improve the performance of phosphor-converted light-emitting diodes (pc-LEDs). Various solid-state reactions were carried out under protective gas atmosphere in nickel crucibles and sealed tantalum ampules to synthesize Sr[LiAlO], Sr[LiGaO], and five substitutional derivates of Sr[Li(Al Ga )O] at moderate temperatures. The observation of a linear increase in the unit cell parameters as a function of the increasing gallium mole fraction in Sr[Li(Al Ga )O] revealed Vegard behavior in the solid-solution series, which was derived from powder X-ray diffraction data.