JP6849980B2 - 異常組織検出装置 - Google Patents
異常組織検出装置 Download PDFInfo
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- JP6849980B2 JP6849980B2 JP2019555344A JP2019555344A JP6849980B2 JP 6849980 B2 JP6849980 B2 JP 6849980B2 JP 2019555344 A JP2019555344 A JP 2019555344A JP 2019555344 A JP2019555344 A JP 2019555344A JP 6849980 B2 JP6849980 B2 JP 6849980B2
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- A—HUMAN NECESSITIES
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- G—PHYSICS
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Description
Claims (6)
- マイクロ波を被検者の検査部位に向けて送信する複数の送信アンテナと、
前記複数の送信アンテナのいずれかが送信し、当該送信アンテナからの直接波の成分と前記検査部位の異常組織からの反射波の成分を含むマイクロ波を受信する複数の受信アンテナと、
送信アンテナと受信アンテナとの間の距離が同一、かつ、前記送信アンテナ及び前記受信アンテナと前記検査部位の異常組織との相対位置関係が異なる状態において1又は2以上の前記受信アンテナが受信した複数の信号を合成して基準信号を生成する基準信号生成手段と、
前記複数の信号のそれぞれと前記基準信号生成手段が生成する前記基準信号とを比較することにより、前記複数の信号のそれぞれに含まれる前記検査部位の異常組織からの反射波の成分を推定する推定手段とを有し、
前記基準信号生成手段は、前記複数の信号を重み付け加算することにより前記基準信号を生成し、重み係数を、重み付けを均一にした場合に比べて、前記複数の信号のそれぞれと前記基準信号との、直接波の成分を含む区間における信号強度の差の合計が小さくなるように決定することを特徴とする、異常組織検出装置。 - 請求項1に記載の異常組織検出装置において、
送信アンテナと受信アンテナを、前記送信アンテナと前記受信アンテナとの相対位置を維持したまま前記検査部位の周囲を回転させる回転制御手段を備え、
前記基準信号生成手段は、前記回転制御手段が前記送信アンテナと前記受信アンテナを回転する間に、当該受信アンテナが、異なる回転角度において受信した複数の信号に基づいて、基準信号を生成することを特徴とする、異常組織検出装置。 - 前記基準信号生成手段は、前記回転制御手段が、一対の送信アンテナと受信アンテナが前記検査部位の周囲を回転する間に、当該受信アンテナが受信する前記複数の信号に基づいて前記基準信号を生成することを特徴とする、請求項2に記載の異常組織検出装置。
- 前記複数の信号のそれぞれは、直接波の成分を含む第1の区間と、反射波の成分を含む第2の区間とを有し、
前記基準信号生成手段は、前記複数の信号のそれぞれにおける前記第1の区間の信号に基づいて前記重み係数を決定し、
前記複数の信号のそれぞれにおける前記第1の区間の信号及び前記第2の区間の信号に対して重み付け加算を行うことで前記基準信号を生成することを特徴とする請求項1乃至3のいずれか一項に記載の異常組織検出装置。 - 前記基準信号生成手段は、前記複数の信号のそれぞれにおける前記第1の区間の信号に基づいて、Tikhonov正則化を適用したWienerフィルタにより前記重み係数を決定することを特徴とする請求項4に記載の異常組織検出装置。
- 前記検査部位は、乳房であり、
前記異常組織は、前記乳房に含まれる癌であることを特徴とする請求項1乃至5のいずれか一項に記載の異常組織検出装置。
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JP2017226586 | 2017-11-27 | ||
JP2017226586 | 2017-11-27 | ||
PCT/JP2018/043059 WO2019103057A1 (ja) | 2017-11-27 | 2018-11-21 | 異常組織検出装置 |
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JP6849980B2 true JP6849980B2 (ja) | 2021-03-31 |
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JPS6275258A (ja) * | 1985-09-30 | 1987-04-07 | Hitachi Medical Corp | 機械走査形超音波探触子のモ−タ制御装置 |
DE4340059C2 (de) * | 1993-11-24 | 1996-06-13 | Fraunhofer Ges Forschung | Verfahren zur Detektion ganz oder teilweise verborgener Inhomogenitäten |
GB0502651D0 (en) * | 2005-02-09 | 2005-03-16 | Univ Bristol | Methods and apparatus for measuring the internal structure of an object |
US20120289827A1 (en) * | 2008-05-06 | 2012-11-15 | Ultrawave Labs, Inc. | Multi-Modality Ultrasound and Radio Frequency Methodology for Imaging Tissue |
EP2967477B1 (en) * | 2013-03-14 | 2019-05-15 | Vayyar Imaging Ltd. | Microwave imaging resilient to background and skin clutter |
CN103300826A (zh) * | 2013-06-06 | 2013-09-18 | 天津大学 | 一种用于早期乳腺肿瘤超宽带微波检测的成像方法 |
JP5697719B2 (ja) * | 2013-06-26 | 2015-04-08 | キヤノン株式会社 | 超音波診断装置およびその制御方法 |
WO2017073757A1 (ja) * | 2015-10-29 | 2017-05-04 | 国立大学法人広島大学 | 検出装置、信号処理方法及びプログラム |
JP2017113222A (ja) * | 2015-12-24 | 2017-06-29 | 国立大学法人広島大学 | 異常組織検出装置 |
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