Enhancing Whole-Brain Magnetic Field Homogeneity for 3D-Magnetic Resonance Spectroscopic Imaging with a Novel Unified Coil: A Preliminary Study.

The spectral quality of magnetic resonance spectroscopic imaging (MRSI) can be affected by strong magnetic field inhomogeneities, posing a challenge for 3D-MRSI's widespread clinical use with standard scanner-equipped 2nd-order shim coils. To overcome this, we designed an empirical unified shim-RF head coil (32-ch RF receive and 51-ch shim) for 3D-MRSI improvement. We compared its shimming performance and 3D-MRSI brain coverages against the standard scanner shim (2nd-order spherical harmonic (SH) shim coils) and integrated parallel reception, excitation, and shimming (iPRES) 32-ch AC/DC head coil.

COVID-19 Readiness and Career Aspirations of South Indian Medical Students: A Cross-Sectional Survey Study.

Purpose: The second wave of COVID-19 devastated the medical sector on India and the government has implored medical students to aid the frontline workforce. This study aims to assess the knowledge, attitude and practice (KAP) of South Indian Medical students regarding the COVID-19 pandemic and their career aspirations.

Patients And Methods: This is an online questionnaire based, cross-sectional study featuring a pre-validated questionnaire with a KAP section and a career aspiration survey section, which was distributed to South Indian medical schools between November and December 2020.

Utility of True Fast Imaging with Steady-State Precession in Detecting Arachnoid Veils of the Posterior Fossa.

Introduction: Arachnoid membranes are well recognized as a cause of cerebrospinal fluid (CSF) flow impairment in disorders such as obstructive hydrocephalus and syringohydromyelia, but can be difficult to detect with standard noninvasive imaging techniques. True fast imaging with steady-state precession (TrueFISP) can exhibit brain pulsations and CSF dynamics with high spatiotemporal resolution. Here, we demonstrate the utility of this technique in the diagnosis and management of arachnoid membranes in the posterior fossa.

Dose reduction in digital radiography based on the significance of marginal contrast detectability.

The performance of three digital detectors was measured at two exposure index (EI) levels in terms of the effect on features at the borderline of detectability. The null hypothesis was that there would be no statistically significant difference in the CNR of marginally visible features of a baseline- (2.2 µGy) and reduced dose (1.

Enhanced antibacterial activity of uniform and stable chitosan nanoparticles containing metronidazole against anaerobic bacterium of Bacteroides fragilis.

In this paper, the salt-assisted chitosan nanoparticles (CS NPs) containing metronidazole (MTZ) were prepared using the ionic gelation technique in the presence of NaCl. The effect of different concentrations of NaCl on particle size, zeta potential, polydispersity index (PDI), and entrapment efficiency (EE %) was investigated. Also, the stability of MTZ-loaded CS NPs in the absence/presence of NaCl was evaluated over a 6-month storage period.