ArticleApplied magnetic resonance2021
Evaluation of a Refined Implantable Resonator for Deep-Tissue EPR Oximetry in the Clinic.
Article in Applied magnetic resonance, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Electron paramagnetic resonance (EPR) meets drug delivery and biomaterials: a magnetic love story.Drug delivery and translational research · 2026Review
- A Novel Approach to In Vivo EPR Spectroscopy for Repeatable Assessments of Oxygenation Levels in Tumors at Any Depth: Preliminary Feasibility Studies Utilizing a Multisite Oxygen Sensor Inside HDR Brachytherapy Needles.Advances in experimental medicine and biology · 2026Article
- Celebration of 80 years of EPR.Applied magnetic resonance · 2024Article
- Re-examining What the Results of "a Measurement of Oxygen Level in Tissues" Really Mean.Molecular imaging and biology · 2024Article
- Recognising Potential Ambiguities in Measurements of Oxygen in Tissues.Advances in experimental medicine and biology · 2024Article
- First-In-Human Study in Cancer Patients Establishing the Feasibility of Oxygen Measurements in Tumors Using Electron Paramagnetic Resonance With the OxyChip.Frontiers in oncology · 2021Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
objectives(1) Summarize revisions made to the implantable resonator (IR) design and results of testing to characterize biocompatibility;(2) Demonstrate safety of implantation and feasibility of deep tissue oxygenation measurement using electron paramagnetic resonance (EPR) oximetry. STUDY
designIn vitro testing of the revised IR and in vivo implantation in rabbit brain and leg tissues.
methodsRevised IRs were fabricated with 1-4 OxyChips with a thin wire encapsulated with two biocompatible coatings. Biocompatibility and chemical characterization tests were performed. Rabbits were implanted with either an IR with 2 oxygen sensors or a biocompatible-control sample in both the brain and hind leg. The rabbits were implanted with IRs using a catheter-based, minimally invasive surgical procedure. EPR oximetry was performed for rabbits with IRs. Cohorts of rabbits were euthanized and tissues were obtained at 1 week, 3 months, and 9 months after implantation and examined for tissue reaction.
resultsBiocompatibility and toxicity testing of the revised IRs demonstrated no abnormal reactions. EPR oximetry from brain and leg tissues were successfully executed. Blood work and histopathological evaluations showed no significant difference between the IR and control groups.
conclusionsIRs were functional for up to 9 months after implantation and provided deep tissue oxygen measurements using EPR oximetry. Tissues surrounding the IRs showed no more tissue reaction than tissues surrounding the control samples. This pre-clinical study demonstrates that the IRs can be safely implanted in brain and leg tissues and that repeated, non-invasive, deep-tissue oxygen measurements can be obtained using in vivo EPR oximetry.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.