Eric K. van Staalduinen

All Publications

• RASopathies influences on neuroanatomical variation in children. Biological psychiatry. Cognitive neuroscience and neuroimaging McGhee, C. A., Honari, H., Siqueiros-Sanchez, M., Serur, Y., van Staalduinen, E. K., Stevenson, D., Bruno, J. L., Raman, M. M., Green, T. 2024

  Abstract

  RASopathies are a group of disorders characterized by pathogenic mutations in the Ras-mitogen-activated protein kinase (Ras/MAPK) signaling pathway. Distinct pathogenic variants in genes encoding proteins in the Ras/MAPK pathway cause Noonan syndrome (NS) and neurofibromatosis type 1 (NF1), which are associated with increased risk for autism spectrum disorder (ASD) and attention deficit and hyperactivity disorder (ADHD).This study examines the effect RASopathies (NS and NF1) has on human neuroanatomy, specifically on surface area (SA), cortical thickness (CT), and subcortical volumes. We compared structural T1-weighted images, using vertex-based analysis for cortical measures and Desikan ROI parcellation for subcortical volumes on children with RASopathies (n=91, mean age = 8.81, SD = 2.12) to sex- and age-matched TD (n=74, mean age=9.07, SD = 1.77).Compared to TD, RASopathies had convergent effects on SA and CT, exhibiting increased SA in the precentral gyrus, decreased SA in occipital regions, and thinner CT in the precentral gyrus. RASopathies exhibit divergent effects on subcortical volumes, with syndrome-specific influences from NS and NF1. Overall children with NS display decreased volumes in striatal and thalamic structures and children with NF1 display increased volumes in the hippocampus, amygdala, and thalamus.Our study reveals the converging and diverging neuroanatomical effects of RASopathies on human neurodevelopment. The convergence of cortical effects on SA and CT indicates a shared influence of Ras/MAPK hyperactivation on the human brain. Therefore, considering these measures as objective outcome indicators for targeted treatments is imperative.

  View details for DOI 10.1016/j.bpsc.2024.04.003

  View details for PubMedID 38621478

• Anatomy of the Spinal Cord, Coverings, and Nerves. Neuroimaging clinics of North America Hashmi, S. S., van Staalduinen, E. K., Massoud, T. F. 2022; 32 (4): 903-914

  Abstract

  The spinal cord is an elegant structure that serves as a conduit for the transfer of information between the brain and the peripheral nervous system. To enable the reader to understand its complex microstructural anatomy, we have created a detailed yet approachable anatomic reference for clinicians. We review gross and structural features of the spinal cord, its coverings, and nerves while also discussing spinal cord development, microscopic organization, and common anatomic variants. We detail how this anatomy appears on current neuroimaging techniques, with special attention to MR imaging.

  View details for DOI 10.1016/j.nic.2022.07.025

  View details for PubMedID 36244730

• Intracranial Artery Morphology in Pediatric Moya Moya Disease and Moya Moya Syndrome. Neurosurgery Yedavalli, V. S., Quon, J. L., Tong, E., van Staalduinen, E. K., Mouches, P., Kim, L. H., Steinberg, G. K., Grant, G. A., Yeom, K. W., Forkert, N. D. 2022

  Abstract

  BACKGROUND: Moya Moya disease (MMD) and Moya Moya syndrome (MMS) are cerebrovascular disorders, which affect the internal carotid arteries (ICAs). Diagnosis and surveillance of MMD/MMS in children mostly rely on qualitative evaluation of vascular imaging, especially MR angiography (MRA).OBJECTIVE: To quantitatively characterize arterial differences in pediatric patients with MMD/MMS compared with normal controls.METHODS: MRA data sets from 17 presurgery MMD/MMS (10M/7F, mean age = 10.0 years) patients were retrospectively collected and compared with MRA data sets of 98 children with normal vessel morphology (49 male patients; mean age = 10.6 years). Using a level set segmentation method with anisotropic energy weights, the cerebral arteries were automatically extracted and used to compute the radius of the ICA, middle cerebral artery (MCA), anterior cerebral artery (ACA), posterior cerebral artery (PCA), and basilar artery (BA). Moreover, the density and the average radius of all arteries in the MCA, ACA, and PCA flow territories were quantified.RESULTS: Statistical analysis revealed significant differences comparing children with MMD/MMS and those with normal vasculature (P < .001), whereas post hoc analyses identified significantly smaller radii of the ICA, MCA-M1, MCA-M2, and ACA (P < .001) in the MMD/MMS group. No significant differences were found for the radii of the PCA and BA or any artery density and average artery radius measurement in the flow territories (P > .05).CONCLUSION: His study describes the results of an automatic approach for quantitative characterization of the cerebrovascular system in patients with MMD/MMS with promising preliminary results for quantitative surveillance in pediatric MMD/MMS management.

  View details for DOI 10.1227/neu.0000000000002099

  View details for PubMedID 36084178

• Medial Temporal Lobe Anatomy. Neuroimaging clinics of North America van Staalduinen, E. K., Zeineh, M. M. 2022; 32 (3): 475-489

  Abstract

  The medial temporal lobe (MTL) is a complex anatomic region encompassing the hippocampal formation, parahippocampal region, and amygdaloid complex. To enable the reader to understand the well-studied regional anatomic relationships and cytoarchitecture that form the basis of functional connectivity, the authors have created a detailed yet approachable anatomic reference for clinicians and scientists, with special attention to MR imaging. They have focused primarily on the hippocampal formation, discussing its gross structural features, anatomic relationships, and subfield anatomy and further discuss hippocampal terminology and development, hippocampal connectivity, normal anatomic variants, clinically relevant disease processes, and automated hippocampal segmentation software.

  View details for DOI 10.1016/j.nic.2022.04.012

  View details for PubMedID 35843657

• Editorial for "Anatomical Partition-Based Deep Learning: An Automatic Nasopharyngeal Magnetic Resonance Image Recognition Scheme". Journal of magnetic resonance imaging : JMRI van Staalduinen, E. K. 2022

  View details for DOI 10.1002/jmri.28119

  View details for PubMedID 35167148

• Altered sense of self during seizures in the posteromedial cortex. Proceedings of the National Academy of Sciences of the United States of America Parvizi, J., Braga, R. M., Kucyi, A., Veit, M. J., Pinheiro-Chagas, P., Perry, C., Sava-Segal, C., Zeineh, M., van Staalduinen, E. K., Henderson, J. M., Markert, M. 2021; 118 (29)

  Abstract

  The posteromedial cortex (PMC) is known to be a core node of the default mode network. Given its anatomical location and blood supply pattern, the effects of targeted disruption of this part of the brain are largely unknown. Here, we report a rare case of a patient (S19_137) with confirmed seizures originating within the PMC. Intracranial recordings confirmed the onset of seizures in the right dorsal posterior cingulate cortex, adjacent to the marginal sulcus, likely corresponding to Brodmann area 31. Upon the onset of seizures, the patient reported a reproducible sense of self-dissociation-a condition he described as a distorted awareness of the position of his body in space and feeling as if he had temporarily become an outside observer to his own thoughts, his "me" having become a separate entity that was listening to different parts of his brain speak to each other. Importantly, 50-Hz electrical stimulation of the seizure zone and a homotopical region within the contralateral PMC induced a subjectively similar state, reproducibly. We supplement our clinical findings with the definition of the patient's network anatomy at sites of interest using cortico-cortical-evoked potentials, experimental and resting-state electrophysiological connectivity, and individual-level functional imaging. This rare case of patient S19_137 highlights the potential causal importance of the PMC for integrating self-referential information and provides clues for future mechanistic studies of self-dissociation in neuropsychiatric populations.

  View details for DOI 10.1073/pnas.2100522118

  View details for PubMedID 34272280

• Mammary Lobular Carcinoma-Like Salivary Gland Carcinoma: Report of a Rare Case. Head and neck pathology Lei, L., Van Staalduinen, E., Troxell, M., Ozawa, M. G., Zeineh, M., Berry, G. 2021

  Abstract

  Salivary and mammary glands are both exocrine organs sharing multiple tumorigenic processes. To the best of our knowledge, salivary gland tumors mimicking invasive lobular carcinoma of the breast have not yet been described. Herein, we report a case of a 62-year-old male who presented with progressive facial paralysis. Pathologic examination revealed an ill-defined epithelial neoplasm exhibiting discohesive growth set within an extensively fibrotic stroma. Both perineural and intraneural invasion were present. E-cadherin and p120 immunostaining showed aberrant cytoplasmic expression. Targeted next-generation sequencing detected a frameshift mutation of the CTNNA1 gene as the only known pathogenic variant. The patient was treated with surgical resection, immunotherapy, and chemotherapy. Currently, he is alive with disease twenty months after disease onset.

  View details for DOI 10.1007/s12105-021-01344-2

  View details for PubMedID 34115320

• Editorial on "Grading Soft Tissue Involvement in Nasopharyngeal Carcinoma Using Network and Survival Analyses: A Two-Center Retrospective Study". Journal of magnetic resonance imaging : JMRI van Staalduinen, E. K. 2021

  View details for DOI 10.1002/jmri.27552

  View details for PubMedID 33594729