Musculoskeletal perturbations of deep space radiation: Assessment using a Gateway MRI.

Human space exploration expansion from Low-Earth Orbit to deep space is accelerating the need to monitor and address the known health concerns related to deep space radiation. The human musculoskeletal system is vulnerable to these risks (alongside microgravity) and its health reflects the well-being of other body systems. Multiparametric magnetic resonance imaging (MRI) is an important approach for assessing temporal physiological changes in the musculoskeletal system.

Developing pre-licensure interprofessional and stroke care competencies through skills-based simulations.

Interprofessional collaboration (IPC) in stroke care is accepted as best practice and necessary given the multi-system challenges and array of professionals involved. Our two-part stroke team simulations offer an intentional interprofessional educational experience (IPE) embedded in pre-licensure occupational therapy, physical therapy, pharmacy, medicine, nursing and speech-language pathology curricula. This six-year mixed method program evaluation aimed to determine if simulation delivery differences necessitated by COVID-19 impacted students' IPC perception, ratings, and reported learning.

Concept for gradient-free MRI on twin natural slices.

Objective: The design of an MRI for use in space requires that the hardware be kept to an absolute minimum in terms of mass, complexity, and power. In addition, NASA requirements are that the external stray field needs to be less than 3.2 Gauss, 7 cm from the MRI enclosure.

The effects of coupled B fields in B encoded TRASE MRI - A simulation study.

Transmit Array Spatial Encoding (TRASE) is a novel MRI technique that encodes spatial information by introducing phase gradients in the transmit RF (B) magnetic field. Since TRASE relies on the use of multiple RF fields (B fields with different phase gradients) for k-space traversal, a TRASE pulse sequence requires RF pulses that are produced by switching between the transmit coils (B fields). However, interactions among the transmit RF coils can cause un-driven coils to produce unwanted B fields that impair the spatial encoding.

TRASE 1D sequence performance in imperfect B fields.

Transmit Array Spatial Encoding (TRASE) is an MRI technique that uses radio-frequency (RF) magnetic field (B) phase gradients for spatial encoding. A TRASE pulse sequence consists of a long echo train in which each echo samples a different k-space point. Due to the need for accurate refocusing, TRASE imaging performance depends on |B| homogeneity.