User profiles for J. Rykken

Jeffrey B. Rykken

University of Minnesota
Verified email at umn.edu
Cited by 688

Intramedullary spinal cord metastases: MRI and relevant clinical features from a 13-year institutional case series

JB Rykken, FE Diehn, CH Hunt… - American Journal …, 2013 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: Because intramedullary spinal cord metastasis is often a
difficult diagnosis to make, our purpose was to perform a systematic review of the MR …

Posterior reversible encephalopathy syndrome

JB Rykken, AM McKinney - Seminars in Ultrasound, CT and MRI, 2014 - Elsevier
Posterior reversible encephalopathy syndrome (PRES) is a complex disorder, our understanding
of which continues to evolve. PRES has many clinical associations, many causative …

High frequency hearing loss associated with otitis media

LL Hunter, RH Margolis, JR Rykken, CT Le… - Ear and …, 1996 - journals.lww.com
Objective: Long-term effects of otitis media (OM) on hearing in both conventional and high
frequency (HF) regions in children were studied. Design: Children with OM were enrolled in a …

Western bumble bee: declines in the continental United States and range‐wide information gaps

…, HL Loffland, LL Richardson, AT Rohde, J Rykken… - …, 2020 - Wiley Online Library
… regional effects, and early bloom dates typically correlate with longer growing seasons
and thus are an index of expected increased colony sizes at lower latitudes and elevations (J. …

Utility and significance of gadolinium-based contrast enhancement in posterior reversible encephalopathy syndrome

SJ Karia, JB Rykken, ZJ McKinney… - American Journal …, 2016 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: Posterior reversible encephalopathy syndrome is a
clinicoradiologic syndrome. Literature regarding associated factors and the prognostic significance …

[HTML][HTML] The arctic and alpine bumblebees of the subgenus Alpinobombus revised from integrative assessment of species' gene coalescents and morphology (Hymenoptera …

…, F Ødegaard, C Rasmussen, LL Richardson, J Rykken… - Zootaxa, 2019 - mapress.com
The bumblebees of the subgenus Alpinobombus of the genus Bombus are unusual among
bees for specialising in many of the most northerly vegetated arctic habitats on Earth. Most …

Rim and flame signs: postgadolinium MRI findings specific for non-CNS intramedullary spinal cord metastases

JB Rykken, FE Diehn, CH Hunt… - American Journal …, 2013 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: No highly specific MR imaging features distinguishing
ISCMs from primary cord masses have been described. Our purpose was to retrospectively …

Transforaminal lumbar puncture: an alternative technique in patients with challenging access

…, H Estby, AM McKinney, JB Rykken - American Journal …, 2018 - Am Soc Neuroradiology
Interlaminar lumbar puncture and cervical puncture may not be ideal in all circumstances.
Recently, we have used a transforaminal approach in selected situations. Between May 2016 …

Acute toxic leukoencephalopathy: etiologies, imaging findings, and outcomes in 101 patients

…, NJ Kroll, JC Benson, JB Rykken… - American Journal …, 2019 - Am Soc Neuroradiology
BACKGROUND AND PURPOSE: Prior studies regarding acute toxic leukoencephalopathy (ATL)
are either small, or preliminary. Our aim was to evaluate etiologies of and differences in …

Headwater riparian forest‐floor invertebrate communities associated with alternative forest management practices

JJ Rykken, AR Moldenke, DH Olson - Ecological Applications, 2007 - Wiley Online Library
Headwater streams and their riparian zones are a common, yet poorly understood,
component of Pacific Northwest, USA, landscapes. We describe the ecological importance of …