Publications by authors named "A Dimov"
Are current follow-up intervals justified in patients with non-emergent aortic surgeries?
Interdiscip Cardiovasc Thorac Surg
December 2024
Objectives: Evidence for different surveillance protocols following aortic treatment is still lacking. The aim of this study was to analyse the clinical relevance of a first follow-up visit after 6 months.
Methods: Between January 2018 and December 2019, 464 patients treated for non-emergent aortic pathologies were retrospectively analysed.
Purpose: Myelin quantification is used in the study of demyelination in neurodegenerative diseases. A novel noninvasive MRI method, Microstructure-Informed Myelin Mapping (MIMM), is proposed to quantify the myelin volume fraction (MVF) from a routine multi-gradient echo sequence (mGRE) using a multiscale biophysical signal model of the effects of microstructural myelin and iron.
Theory And Methods: In MIMM, the effects of myelin are modeled based on the Hollow Cylinder Fiber Model accounting for anisotropy, while iron is considered as an isotropic paramagnetic point source.
Objective: To correlate intraoperative near-infrared spectroscopy (NIRS) values with neurologic outcomes in patients undergoing total aortic arch replacement using the frozen elephant trunk (FET) technique.
Design: Retrospective, single-center registry study using a two-way repeated-measures analysis of variance.
Setting: Between November 2013 and December 2023, 427 patients were treated for acute and chronic aortic pathologies using the FET procedure.
Article Synopsis
- Scientists wanted to understand brain tissues in newborns by measuring myelin and iron using a new method called quantitative susceptibility mapping.
- They had 69 healthy newborns get MRI scans to see how these materials showed up in different parts of the brain.
- The results showed differences in brain signals: myelin had a lower signal in some areas while iron had a higher signal in others, helping to reveal how these substances are distributed in newborn brains.
Background And Purpose: The objective is to demonstrate feasibility of quantitative susceptibility mapping (QSM) in autosomal dominant polycystic kidney disease (ADPKD) patients and to compare imaging findings with traditional T1/T2w magnetic resonance imaging (MRI).
Methods: Thirty-three consecutive patients (11 male, 22 female) diagnosed with ADPKD were initially selected. QSM images were reconstructed from the multiecho gradient echo data and compared to co-registered T2w, T1w, and CT images.