Anionic lanthanide complexes with 3-methyl-1-phenyl-4-formylpyrazole-5-one and hydroxonium as counter ion

AbstractA series of [H3O]+[LnL4]−·nH2O complexes (n=1–3, Ln=Nd, (1), Sm (2), Eu (3), Tb (4); HL=3-methyl-1-phenyl-4-formylpyrazole-5-one) were synthesized and characterized. The structures of the SmIII and EuIII complexes were investigated by X-ray diffraction. The isostructutal crystalls 2 and 3 consist the tetrakis [LnL4]− anions which are linked by H-bonding with the hydroxonium counter-ion and water molecules. The lanthanide ion is situated in the center of distorted tetragonal antiprism formed by eight oxygen atoms of 4-formyl-5-hydroxypyrazolonate anions. The TbIII and SmIII complexes show strong luminescence in solid state, whereas the EuIII and NdIII complexes show low luminescence activity

ПЕРФУЗИОННАЯ ОЭКТ МИОКАРДА С КТ-КОРРЕКЦИЕЙ ПОГЛОЩЕНИЯ: ПРИНЦИПЫ ПОЛУЧЕНИЯ И ИНТЕРПРЕТАЦИИ ДАННЫХ (МЕТОДИЧЕСКИЕ РЕКОМЕНДАЦИИ)

Guidelines for the implementation and interpretation of myocardial perfusion single-photon emission computed tomography (SPECT) with CT-based attenuation correction (AC) are compiled on the basis of long-term (since 1978) experience of the group of authors regarding the research of myocardial perfusion in various cardiovascular diseases, and aligned with the current EANM guidelines.Методические рекомендации по выполнению и интерпретации данных перфузионной однофотонной эмиссионной компьютерной томографии (ОЭКТ) миокарда с КТ-коррекцией поглощения излучения составлены на основании многолетнего (с 1978 г.) опыта авторского коллектива по исследованию перфузии миокарда при различных заболеваниях сердечно-сосудистой системы и приведены в соответствие с текущими рекомендациями EANM

Phantom kidney at angionephroscintigraphy

Based on the analysis of the data available in the literature and own clinical observations, the authors consider the diagnostic value of the little known scintigraphic phantom kidneyphenomenon, a vascular pool that is detected at the angiographic stage of 99mТс-DTPA dynamic renal scintigraphy and that mimics a removed or absent kidney. The paper  describes two cases of the phantom kidney. In one case, the phantom kidneydetected on the side of nephrectomy manifested a kidney cancer recurrence in the bed of the removed organ; in the other, the kidney-like vascular pool in the patient with left-sided pelvic dystopic kidney was due to the recording of the intestinal vasculature at the site of the expected kidney location. Adherence to a number of methodical conditions for  conducting a study, as well as combined single-photon emission computed tomography/computed tomography examination will be able to avoid interpretation errors and to ensure an adequate further diagnostic algorithm

SPECTRAL-LUMINESCENT PROPERTIES OF COMPLEXES OF LANTHANIDES (III) WITH 4-ACYLPIRAZOL-5-ONES

The optimal conditions for complexation of lanthanide (III) ions with 1-phenyl-3- methyl-4-formyl-pyrazol-5-one (L) and its derivatives, the molar ratio lanthanide:ligand in the complexes and their spectral-luminescent properties were established. It is shown that the introduction of additional ligands, organic solvents and surfactants increases the luminescence intensity up to 100 times