Invention Grant
- Patent Title: System and method for control of hyperpolarized gas-phase contamination in spectroscopic magnetic resonance imaging
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Application No.: US15900256Application Date: 2018-02-20
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Publication No.: US10677874B2Publication Date: 2020-06-09
- Inventor: Sean Fain , Andrew Hahn , Jeffrey Kammerman
- Applicant: Wisconsin Alumni Research Foundation
- Applicant Address: US WI Madison
- Assignee: Wisconsin Alumni Research Foundation
- Current Assignee: Wisconsin Alumni Research Foundation
- Current Assignee Address: US WI Madison
- Agency: Quarles & Brady LLP
- Main IPC: G01R33/565
- IPC: G01R33/565 ; G01R33/28 ; G01R33/54 ; G01R33/56 ; G01R33/385 ; G01R33/48

Abstract:
A system and method is provided to acquire images of a subject having received a tissue soluble hyperpolarized gas into the airways. The method includes performing a pulse sequence including (i) for each effective repetition time (TReff), acquiring at least one gas-phase dataset and at least one dissolved-phase dataset, wherein a gas-phase echo time (TEGas) of the at least one gas-phase dataset and a dissolved-phase echo time (TEDissolved) of the at least one dissolved-phase dataset are selected to isolate gas-phase contamination of the dissolved-phase dataset from dissolved-phase components in the dissolved-phase dataset. The method also includes (ii) estimating gas-phase contamination of the dissolved-phase dataset using the gas-phase dataset and a scaling factor (σ), (iii) producing a corrected dissolved-phase dataset by reducing the gas-phase contamination of the dissolved-phase dataset using the gas-phase contamination estimated in step (ii), and reconstructing an image from the corrected dissolved-phase dataset and the gas-phase dataset.
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