Available Technologies

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Medical Imaging

26 available technologies

Radiation Guided Drug Delivery to Tumors

The technology described here permits the delivery of therapeutic or diagnostic (tumor imaging) molecules to a variety of tumor types in a targeted fashion. Current methods for targeting therapeutic agents to tumors have limited utility because they
(i) produce toxic effects through reactions with normal tissues;
(ii) lack the ability to bind to multiple tumor types and/or
(iii) lack tumor specificity.
This technology is based upon the fact that certain proteins are upregulated in blood vessels in response to irradiation. These upregulated proteins can act as targets for binding molecules such as antibodies, peptides, or other chemicals. Attaching an anti-tumor therapeutic unit, such as a radioisotope, to one of these binding molecules (e.g. an antibody) provides a way to treat or detect a variety of tumor types and stages while avoiding damage to normal tissue. Licensing Opportunity: A suite of patents and patent applications available for licensing includes compositions of radiation-inducible tumor proteins, and molecules that bind these proteins such as peptides and antibodies; along with methods of using these ligands for treatment and for identification of radiation inducible ligands in tumors. State of development/future plans: Screening a phage display library (murine) has resulted in production of 13 recombinant antibodies that bind to an identified radiation-inducible antigen. Only 2 (designated Lead and Control ScFv) of the 13 recombinant antibodies bound radiation-induced antigen in mice and are depicted in the accompanying figure. Of these two, the LEAD ScFv specifically bound tumor (see figure). Research is moving towards humanizing the lead antibody and identifying the specific epitope bound by the antibody.

Phase-Contrast-Enhanced Computed Tomography Scanner

A phase-contrast X-Ray computed tomography scanner, a monochromatic diffraction computed tomography scanner, a rotatable monochromatic diffraction computed tomography scanner, and a combination phase-contrast and monochromatic computed tomographic scanner are provided. In addition, a method of identifying an unknown sample is provided.

Method for the Automatic Segmentation of the Facial Nerve and the Chorda Tympani in CT Images

This is a high resolution imaging device that can detect the fundamental functional units of cortical organization. Currently, with existing technology, we are able to monitor the activity of these units in the awake, head-fixed animal using large standard sized cameras mounted on heavy camera arms. However, we need a capability to conduct such monitoring in the awake and freely moving animal so that we can relate specific patterns of cortical activity to natural behaviors.

Novel Application for Imaging Agents

Compounds and methods related to NIR molecular imaging, in-vitro and in-vivo functional imaging, therapy/efficacy monitoring, and cancer and metastatic activity imaging. Compounds and methods demonstrated pertain to the field of peripheral benzodiazepine receptor imaging, metabolic imaging, cellular respiration imaging, cellular proliferation imaging as targeted agents that incorporate signaling agents.

PANORAMIC: Precession and Nutation for Observing Rotation at Multiple Intervals about the Carrier

Methods of hyperpolarization based on parahydrogen have been expanding recently from the early applications in hydrogenation chemistry to biomedical imaging where they are expected to yield similar information as the competing technology, dynamic nuclear polarization, (DNP). These hyperpolarization experiments have already enabled the measurement of metabolism in vivo at temporal resolutions of seconds. When infused into organisms harboring tumor cells, molecules such as pyruvate and lactate have been shown to be sufficiently long-lived to infiltrate cellular metabolic cycles and be converted at different rates in cancer versus normal tissue. DNP has been used most frequently in these early studies, owing to commercial availability and the flexibility to polarize small molecules such as pyruvate and lactate. Techniques based on chemical addition or exchange of parahydrogen have also shown promise for generating metabolic contrast in vivo at similar levels of signal enhancement and at lower costs.

Parahydrogen-Induced Polarizer (PHIP)

The present invention provides a PANACEA (Pneumatics Allow Nonmagnetic Actuation for Creation of Enhanced Alignment) polarizer system. This is an integrated assembly of pneumatically actuated, nonmagnetic hydraulic circuits that enable PASADENA chemicals to be efficiently stored, mixed, and reacted in close proximity or within NMR magnetic fields.

Chemical Synthesis of Isotopically Enriched Unsaturated Precursors for Parahydrogen Induced Polarization of 15N Hyperpolarized Choline

The present invention provides unsaturated choline analogs which, when hyperpolarized, may be useful as MRI contrast agents, and methods of making these choline analogs. These analogs can also be further modified to form hyperpolarized choline for use as an MRI contrast agent. The invention takes advantage of PHIP and can be produced in volume in much shorter times than by using DNP.

Relaxation Time Discriminated 1H NMR for Bone Mechanical/Fracture Property Diagnostics

The present invention describes clinically-practical MRI methods for distinguishing bound and pore water signals from cortical bone based on T2-selective adiabatic pulses as well as T1 characteristics of cortical bone bound and pore water, and offers an improved method of assessing bone structure and fracture risk over x-ray based diagnostic techniques.

Hyper-SHIELDED - Preserving Parahydrogen Spin Order by Efficient Transfer of Nuclear Singlet

Hyperpolarization of nuclear spin ensembles has increased NMR sensitivity to a level that is now enabling detection of metabolism in biological tissue on a time-scale of seconds. The present invention is a pulse sequence that efficiently transforms parahydrogen spin order into heteronuclear magnetization. This was achieved via a single streamlined sequence without recursive application, by finding sequential analytic solutions to the density matrix evolution for each of four independent intervals that collectively flank two proton inversions and one heteronuclear excitation. The name hyper-SHIELDED (Singlet to Heteronuclei by Interative Evolution Locks Dramatic Enhancement for Delivery) reflects the sequence's protective effect on PHIP hyperpolarization.

Generic Magnetic Resonance Imaging Gradient Delay Correction Method for Radial and Spiral Acquisitions

Vanderbilt researchers have developed a way to correct for ubiquitous gradient delay errors in radial and spiral MRI data using only the data necessary to acquire the images. No extra data is required and no special scan must be done to perform the corrections using this unique method.

Diamond Field-Emission Cathodes and Channeling Radiation System for High-Brightness X-ray Sources for Phase Contrast Soft Tissue Imaging

The technology disclosed is an electron gun system that comprises an array of gated field-emitting cathode tips having a diamond pyramid capable of producing an electron beam with exquisitely small emittance (N ~ 2 nm); an accelerator capable of accelerating the emitted electrons to relativistic energies (from ~ 3 Mev to~ 50MeV); and a focusing assembly capable of focusing the accelerated electrons into a focal spot on a diamond crystal to produce hard X-rays. Inventors have observed more than 10 mA average current from a single field-emitting tip with improved performance expected with changes to other system components. By using a single tip it may be possible to improve the transverse brightness of the electron beam by as much as six orders of magnitude, with a corresponding improvement of the spectral brilliance of the X-ray beam.

Assessment of Right Ventricular Function Using Contrast Echocardiography

Vanderbilt Medical Center researchers have developed a non-invasive and reproducible method of assessing right-ventricular function using contrast-echocardiography. The right-ventricular transit time (RVTT) measures the time needed for echocardiographic contrast to travel from the RV to the bifurcation of the main pulmonary artery. Coupled with the pulmonary transit time (PTT), the time needed for contrast to traverse the entire pulmonary circulation, RVTT is part of a family of diagnostic parameters that can report on RV-specific performance as well as the RV's function relative to that of the pulmonary circuit as a whole.

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