Detection of rotational imaging catheter twist using image correlation
AssigneeBoston Scientific Scimed, Inc.
InventorsTimothy G. Curran, Wenguang Li, Corydon Carlson
Life of this patent
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Abstract
The present disclosure is directed towards detecting the potential for and/or buildup of torsional energy in a rotational imaging device. The disclosure can provide an alert to the user, to allow the user to recover from the situation before catastrophic complications (e.g., knotting of the core, or the like) occur. The disclosure provides to correlate sequential images captured by the rotational imaging device to detect the potential for and/or buildup of torsional energy in the device. In particular, rotation between sequential images can be correlated to identify when torsional energy is building in the device.
Claims20
A hardware device to identify the potential twisting of a rotational imaging device used for intravascular imaging, comprising:
- a memory;
- and
- processing circuitry, the processing circuitry configured to:
- receive a first image frame and a second image frame captured by a rotational imaging device during an percutaneous intervention (PCI) procedure;
- derive a two-dimensional (2D) Fast Fourier Transform (FFT) of the first image frame and the second image frame;
- derive a cross-power matrix from the 2D FFTs of the first image frame and the second image frame;
- derive an 2D inverse FFT of the cross-power matrix;
- and
- identify a buildup or torsional energy in the rotational imaging device based in part on the 2D inverse FFT.
An intravascular imaging system comprising:
- a rotational imaging device used for intravascular imaging;
- a motor drive unit coupled to the rotational imaging device;
- and
- an imaging console coupled to the motor drive unit, the imaging console comprising:
- a memory;
- and
- processing circuitry, the processing circuitry configured to:
- receive a first image frame and a second image frame captured by a rotational imaging device during a percutaneous intervention (PCI) procedure;
- derive a two-dimensional (2D) Fast Fourier Transform (FFT) of the first image frame and the second image frame;
- derive a cross-power matrix from the 2D FFTs of the first image frame and the second image frame;
- derive an 2D inverse FFT of the cross-power matrix;
- and
- identify a buildup or torsional energy in the rotational imaging device based in part on the 2D inverse FFT.
A field programmable gate array (FPGA) configured to identify the potential twisting of a rotational imaging device used for intravascular imaging, the FPGA configured to:
- receive a first image frame and a second image frame captured by a rotational imaging device during a percutaneous intervention (PCI) procedure;
- derive a two-dimensional (2D) Fast Fourier Transform (FFT) of the first image frame and the second image frame;
- derive a cross-power matrix from the 2D FFTs of the first image frame and the second image frame;
- derive an 2D inverse FFT of the cross-power matrix;
- and
- identify a buildup or torsional energy in the rotational imaging device based in part on the 2D inverse FFT.
Dependencies are inferred from the claim text.