Publications by authors named "J S Rosenfield"

Sonic hedgehog signaling regulates processes of embryonic development across multiple tissues, yet factors regulating context-specific Shh signaling remain poorly understood. Exome sequencing of families with polymicrogyria (disordered cortical folding) revealed multiple individuals with biallelic deleterious variants in , which encodes a multi-pass transmembrane protein of unknown function. null mice demonstrated holoprosencephaly, craniofacial midline defects, eye defects, and spinal cord patterning changes consistent with impaired Shh signaling, but were without limb defects, suggesting a CNS-specific role of Tmem161b.

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Medical schools provide the foundation for a physician's growth and lifelong learning. They also require a large share of government resources. As such, they should seek opportunities to maintain trust from the public, their students, faculty, universities, regulatory colleges, and each other.

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In 2010, the Association of Faculties of Medicine of Canada, Collège des médecins du Québec, College of Family Physicians of Canada, and Royal College of Physicians and Surgeons of Canada launched the Future of Medical Education in Canada Postgraduate (FMEC PG) Project to examine postgraduate medical education (PGME) in Canada and make recommendations for improvement. One recommendation that emerged concerns the transitions learners experience across the undergraduate medical education-PGME-practice continuum. The FMEC PG, using a thorough process, developed projects to address these often-tumultuous transitions for the learner, aiming to provide support, tools, and standards for the learner's educational journey.

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X-ray computed tomography (CT) is widely used in radiation therapy treatment planning in recent years. However, metal implants such as dental fillings and hip prostheses can cause severe bright and dark streaking artifacts in reconstructed CT images. These artifacts decrease image contrast and degrade HU accuracy, leading to inaccuracies in target delineation and dose calculation.

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