Publications by authors named "B N Delman"
Diffusion magnetic resonance imaging (dMRI) allows for a non-invasive visualization and quantitative assessment of white matter architecture in the brain by characterizing restrictions on the random motion of water molecules. Ultra-high field MRI scanners, such as those operating at 7 Tesla (7T) or higher, can boost the signal-to-noise ratio (SNR) to improve dMRI compared with what is attainable at conventional field strengths such as 3T or 1.5T.
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- The study investigates the connection between the olfactory system and COVID-19 symptoms like loss of smell (anosmia) and taste (hypogeusia) by examining the role of the nervus terminalis (NT) using ultra-high-field 7T MRI imaging.
- Researchers evaluated brain images from 45 COVID-19 patients and 29 healthy controls to identify the presence of NT, olfactory bulbs (OB), and signs of brain volume loss or changes in signal intensity.
- The results showed that NT was visible in all participants, with COVID-19 patients experiencing anosmia or hypogeusia showing significant T2 hyperintensity in NT, OB, and olfactory tract (OT) compared to controls and
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- The study focuses on improving spectral quality in the cerebellum during 7 T MRI scans by using a wireless RF array that reduces signal dropouts from low transmit efficiency.
- A series of in vivo experiments on a Siemens 7 T scanner showed that the RF array significantly enhanced signal-to-noise ratio (SNR) by an average factor of 2.2, particularly in the posterior fossa.
- The findings suggest that this technology could lower RF transmission power and data acquisition time, providing a cost-effective solution for enhanced detection sensitivity in MRI and H-MRS applications.
Lifelong brain health consequences of traumatic brain injury (TBI) include the risk of neurodegenerative disease. Up to one-third of women experience intimate partner violence (IPV) in their lifetime, often with TBI, yet remarkably little is known about the range of autopsy neuropathologies encountered in IPV. We report a prospectively accrued case series from a single institution, the New York City Office of Chief Medical Examiner, evaluated in partnership with the Brain Injury Research Center of Mount Sinai, using a multimodal protocol comprising clinical history review, ex vivo imaging in a small subset, and comprehensive neuropathological assessment by established consensus protocols.
View Article and Find Full Text PDFBackground: The main advantage of ultra-high field (UHF) magnetic resonance neuroimaging is theincreased signal-to-noise ratio (SNR) compared with lower field strength imaging. However, the wavelength effect associated with UHF MRI results in radiofrequency (RF) inhomogeneity, compromising whole brain coverage for many commercial coils. Approaches to resolving this issue of transmit field inhomogeneity include the design of parallel transmit systems (PTx), RF pulse design, and applying passive RF shimming such as high dielectric materials.
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