TISSUE MALIGNANT TUMOR DETECTION METHOD AND TISSUE MALIGNANT TUMOR DETECTION APPARATUS
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Abstract
To detect a malignant tumor more accurately by detecting a feature of a cancerous tumor pulsation more appropriately, a tissue malignant tumor detection method according to the present invention includes: segmenting, into blocks, a region scanned with ultrasound (S100); estimating, based on a scan signal, a tissue pulsation that is a temporal variation in tissue displacement derived from pulsations of a tissue (S101); extracting, for each of the blocks, pulsation-related features that are parameters related to the tissue pulsation (S103); calculating distribution characteristics of the pulsation-related features for each of the blocks (S104); and classifying, based on the distribution characteristics, whether or not each of the blocks is a malignant block that is a block including the malignant tumor (S105).
34 Citations
62 Claims
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1-31. -31. (canceled)
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32. A tissue malignant tumor detection apparatus which detects a malignant tumor included in a tissue, using a scan signal obtained by scanning the tissue with ultrasound, said tissue malignant tumor detection apparatus comprising:
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a block segmentation unit configured to segment a scanned region of the tissue into a plurality of blocks; a tissue pulsation estimation unit configured to estimate a tissue pulsation for each of the blocks, based on the scan signal, the tissue pulsation being a temporal variation in displacement of the tissue caused by pulsation of the tissue; a pulsation-related feature extraction unit configured to extract a plurality of pulsation-related features for each of the blocks, the pulsation-related features being parameters related to the tissue pulsation; a distribution characteristics calculation unit configured to calculate distribution characteristics of the pulsation-related features for each of the blocks; and a malignancy classification unit configured to classify, based on the distribution characteristics, whether or not each of the blocks is a malignant block that is a block including a malignant tumor. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A tissue malignant tumor detection method for detecting a malignant tumor included in a tissue, using a scan signal obtained by scanning the tissue with ultrasound, said tissue malignant tumor detection method comprising:
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segmenting a scanned region of the tissue into a plurality of blocks; estimating a tissue pulsation for each of the blocks, based on the scan signal, the tissue pulsation being a temporal variation in displacement of the tissue caused by pulsation of the tissue; extracting a plurality of pulsation-related features for each of the blocks, the pulsation-related features being parameters related to the tissue pulsation; calculating distribution characteristics of the pulsation-related features for each of the blocks; and classifying, based on the distribution characteristics, whether or not each of the blocks is a malignant block that is a block including a malignant tumor. - View Dependent Claims (62)
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Specification