Perfusion assessment method and system based on bolus administration
First Claim
1. A perfusion assessment system comprising:
- a device configured to;
provide an echo-power signal indicative of a perfusion of a contrast agent in a body part under analysis, the contrast agent being administered as a bolus and undergoing a significant destruction during a passage of the contrast agent in the body part, anda processor configured to;
associate the echo-power signal to a model function including a mathematical product between a bolus function indicative of the passage of the contrast agent without said destruction and a reperfusion function indicative of a reperfusion of the contrast agent in the body part following the destruction corresponding to a substantially constant inflow of the contrast agent, andestimate at least one perfusion indicator from the model function, the bolus function, or the reperfusion function.
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Accused Products
Abstract
A perfusion assessment system is proposed. The system includes means for providing an echo-power signal indicative of a perfusion of a contrast agent in a body-part under analysis, the contrast agent being administered as a bolus and undergoing a significant destruction during a passage of the contrast agent in the body-part, means for associating the echo-power signal to a model function including the product between a bolus function indicative of the passage of the contrast agent without said destruction and a reperfusion function indicative of a reperfusion of the contrast agent in the body part following the destruction corresponding to a substantially constant inflow of the contrast agent, and means for estimating at least one perfusion indicator from the bolus function and/or the reperfusion function.
20 Citations
20 Claims
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1. A perfusion assessment system comprising:
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a device configured to; provide an echo-power signal indicative of a perfusion of a contrast agent in a body part under analysis, the contrast agent being administered as a bolus and undergoing a significant destruction during a passage of the contrast agent in the body part, and a processor configured to; associate the echo-power signal to a model function including a mathematical product between a bolus function indicative of the passage of the contrast agent without said destruction and a reperfusion function indicative of a reperfusion of the contrast agent in the body part following the destruction corresponding to a substantially constant inflow of the contrast agent, and estimate at least one perfusion indicator from the model function, the bolus function, or the reperfusion function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A perfusion assessment method including the steps of:
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providing an echo-power signal indicative of a perfusion of a contrast agent in a body part under analysis, the contrast agent being administered as a bolus and undergoing a significant destruction during a passage of the contrast agent in the body part, associating the echo-power signal to a model function including a mathematical product between a bolus function indicative of the passage of the contrast agent without said destruction and a reperfusion function indicative of a reperfusion of the contrast agent in the body part following the destruction corresponding to a substantially constant inflow of the contrast agent, and estimating at least one perfusion indicator from the model function, the bolus function, or the reperfusion function. - View Dependent Claims (19)
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20. A perfusion assessment system comprising:
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a device configured to; provide an echo-power signal indicative of a perfusion of a contrast agent in a body part under analysis, the contrast agent being administered as a bolus and undergoing a significant destruction during a passage of the contrast agent in the body part, and a hardware structure configured to; associate the echo-power signal to a model function including a mathematical product between a bolus function indicative of the passage of the contrast agent without said destruction and a reperfusion function indicative of a reperfusion of the contrast agent in the body part following the destruction corresponding to a substantially constant inflow of the contrast agent, and estimate at least one perfusion indicator from the model function, the bolus function, or the reperfusion function.
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Specification