Takayoshi Uematsu
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View article: Encapsulated papillary carcinoma with invasion in the breast: A case report with imaging findings
Encapsulated papillary carcinoma with invasion in the breast: A case report with imaging findings Open
View article: A Comparative Analysis of Digital Mammography and Digital Breast Tomosynthesis in Japanese Women
A Comparative Analysis of Digital Mammography and Digital Breast Tomosynthesis in Japanese Women Open
Introduction Digital breast tomosynthesis (DBT) addresses the limitations of digital mammography (DM). While DM+DBT is gradually replacing DM in the United States and other Western countries, its adoption in Japan has been limited. This st…
View article: Development of a deep learning-based automated diagnostic system (DLADS) for classifying mammographic lesions — a first large-scale multi-institutional clinical trial in Japan
Development of a deep learning-based automated diagnostic system (DLADS) for classifying mammographic lesions — a first large-scale multi-institutional clinical trial in Japan Open
Background Recently, western countries have built evidence on mammographic artificial Intelligence—computer-aided diagnosis (AI-CADx) systems; however, their effectiveness has not yet been sufficiently validated in Japanese women. In this …
View article: A preliminary study on diffusion-weighted imaging with background suppression and maximum intensity projection for screening internal mammary lymph node metastasis of breast cancer
A preliminary study on diffusion-weighted imaging with background suppression and maximum intensity projection for screening internal mammary lymph node metastasis of breast cancer Open
Background Internal mammary lymph node (IM) metastasis significantly affects prognosis. However, reports using imaging techniques have been limited. Diffusion-weighted imaging with background suppression and maximum intensity projection (D…
View article: Future of Japanese Breast Cancer Screening Program Funded by Insurers: Toward ‘Equitable’ Screening Using Ultrasound and Tomosynthesis
Future of Japanese Breast Cancer Screening Program Funded by Insurers: Toward ‘Equitable’ Screening Using Ultrasound and Tomosynthesis Open
View article: Breast Cancer Screening in Asian Countries: Epidemiology, Screening Practices, Outcomes, Challenges, and Future Directions
Breast Cancer Screening in Asian Countries: Epidemiology, Screening Practices, Outcomes, Challenges, and Future Directions Open
In 2022, nearly 2.3 million new cases of breast cancer were reported globally, with less than half of these cases originating from Asia. Despite the relatively low incidence of breast cancer in most parts of Asia, the mortality-to-incidenc…
View article: Equity in breast cancer screening for Asian women with dense breasts through ultrasonography: lessons learned from Japanese mammography screening and the J-START trial
Equity in breast cancer screening for Asian women with dense breasts through ultrasonography: lessons learned from Japanese mammography screening and the J-START trial Open
View article: A New Breast Density Assessment Method Using Portable Document Format
A New Breast Density Assessment Method Using Portable Document Format Open
The PDF and mammography workstation readings for breast density assessment had almost perfect inter-method agreements. Moreover, the intra-observer agreement of PDF reading was almost perfect.
View article: AI Systems for Mammography with Digital Breast Tomosynthesis: Expectations and Challenges
AI Systems for Mammography with Digital Breast Tomosynthesis: Expectations and Challenges Open
View article: Non-contrast-enhanced breast MRI for evaluation of tumor volume change after neoadjuvant chemotherapy
Non-contrast-enhanced breast MRI for evaluation of tumor volume change after neoadjuvant chemotherapy Open
Non-contrast-enhanced Breast MRI enables appropriate and faster evaluation of tumor volume change after NAC than 3D-Ce-MRI especially for mass lesions.
View article: Preliminary study of standardized semiquantitative method for ultrasonographic breast composition assessment
Preliminary study of standardized semiquantitative method for ultrasonographic breast composition assessment Open
Purpose To develop a classification tree via semiquantitative analysis for ultrasonographic breast composition assessment using routine breast ultrasonography examination images. Methods This study retrospectively enrolled 100 consecutive …
View article: Investigation of imaging features in contrast-enhanced magnetic resonance imaging of benign and malignant breast lesions
Investigation of imaging features in contrast-enhanced magnetic resonance imaging of benign and malignant breast lesions Open
Purpose This study aimed to enhance the diagnostic accuracy of contrast-enhanced breast magnetic resonance imaging (MRI) using gadobutrol for differentiating benign breast lesions from malignant ones. Moreover, this study sought to address…
View article: Breast cancer screening by clinical breast examination should be completely abolished
Breast cancer screening by clinical breast examination should be completely abolished Open
View article: The future of breast ultrasonography through non-mass lesions
The future of breast ultrasonography through non-mass lesions Open
View article: Rethinking screening mammography in Japan: next-generation breast cancer screening through breast awareness and supplemental ultrasonography
Rethinking screening mammography in Japan: next-generation breast cancer screening through breast awareness and supplemental ultrasonography Open
View article: Overcoming the limitations of screening mammography in Japan and Korea: a paradigm shift to personalized breast cancer screening based on ultrasonography
Overcoming the limitations of screening mammography in Japan and Korea: a paradigm shift to personalized breast cancer screening based on ultrasonography Open
Screening mammography programs have been implemented in numerous Western countries with the aim of reducing breast cancer mortality. However, despite over 20 years of population-based screening mammography, the mortality rates in Japan and…
View article: Non-mass lesions on breast ultrasound: why does not the ACR BI-RADS breast ultrasound lexicon add the terminology?
Non-mass lesions on breast ultrasound: why does not the ACR BI-RADS breast ultrasound lexicon add the terminology? Open
The definition of a non-mass lesion on breast ultrasound (US) is designed for everyday practice to provide unambiguous clinical management and to assist physicians and sonographers as they interpret breast US images. The field of breast im…
View article: Risk-Stratified Breast Cancer Screening
Risk-Stratified Breast Cancer Screening Open
近年、世界的に乳癌発症リスク層別化による乳がん検診の概念が注目され、リスク層別化乳がん検診が不利益の少ない、対費用効果で優れる乳がん検診をもたらすと注目されている。日本で行われた40～49 歳の無症状の日本人女性を対象とした7万人を超える研究参加者で行われた、検診マンモグラフィと補助的検診モダリティの乳房超音波検査を併用した乳がん検診の成績を比較した大規模な世界初のランダム化比較試験であるJ-START は、乳癌発症リスクの高い40歳代の日本人女性に対する超音波検査を加えた…
View article: Japan’s breast awareness campaign: a product of team Kasahara in Health and Labour Sciences Research
Japan’s breast awareness campaign: a product of team Kasahara in Health and Labour Sciences Research Open
ブレスト・アウェアネスの目的は，①乳房の健康に関する知識を身に付けることと，②自覚症状のある乳がんに早く気づき医療機関への受診を促し進行乳癌を防ぐことにある。ブレスト・アウェアネスの普及と乳癌死減少は逆相関性が証明されており，乳がん検診と並ぶ乳癌対策の医療政策として，ブレスト・アウェアネスの啓発は世界的に実施されている。乳房を意識する生活習慣（ブレスト・アウェアネス）の啓発を通して，乳癌が疑われる有症状の女性は速やかに病院に受診するという適切な医療受診行動と乳がん検診は無症…
View article: The current situation of screening mammography and toward riskstratified breast cancer screening in Japan
The current situation of screening mammography and toward riskstratified breast cancer screening in Japan Open
日本の乳がん検診は，欧米のデータで乳癌死亡率減少効果が唯一証明されている検診マンモグラフィを４０歳以上の女性に対して２年に１回施行するという画一的な方法を推奨している。既に検診マンモグラフィを施行して２０年以上経過しているが，今もなお日本人女性の乳癌死亡率が増加を続けている事実から現行のわが国の乳がん検診制度が最適とは言えない。検診マンモグラフィ一辺倒である現行の考え方からのパラダイムシフトが必要である。日本の次世代乳がん検診はブレスト・アウェアネスの啓発を行うとともに，組…
View article: Comparisons between artificial intelligence computer-aided detection synthesized mammograms and digital mammograms when used alone and in combination with tomosynthesis images in a virtual screening setting
Comparisons between artificial intelligence computer-aided detection synthesized mammograms and digital mammograms when used alone and in combination with tomosynthesis images in a virtual screening setting Open
Purpose To compare the reader performance of artificial intelligence computer-aided detection synthesized mammograms (AI CAD SM) with that of digital mammograms (DM) when used alone or in combination with digital breast tomosynthesis (DBT)…
View article: Artificial intelligence computer-aided detection enhances synthesized mammograms: comparison with original digital mammograms alone and in combination with tomosynthesis images in an experimental setting
Artificial intelligence computer-aided detection enhances synthesized mammograms: comparison with original digital mammograms alone and in combination with tomosynthesis images in an experimental setting Open
Background It remains unclear whether original full-field digital mammograms (DMs) can be replaced with synthesized mammograms in both screening and diagnostic settings. To compare reader performance of artificial intelligence computer-aid…
View article: Correction to: The Japanese Breast Cancer Society Clinical Practice Guidelines for Breast Cancer Screening and Diagnosis, 2018 Edition
Correction to: The Japanese Breast Cancer Society Clinical Practice Guidelines for Breast Cancer Screening and Diagnosis, 2018 Edition Open
A correction to this paper has been published: https://doi.org/10.1007/s12282-021-01251-y
View article: Correction to: The Japanese Breast Cancer Society Clinical Practice Guidelines, 2018 edition: the tool for shared decision making between doctor and patient
Correction to: The Japanese Breast Cancer Society Clinical Practice Guidelines, 2018 edition: the tool for shared decision making between doctor and patient Open
A correction to this paper has been published: https://doi.org/10.1007/s12282-021-01253-w
View article: Correction to: Overall assessment system of combined mammography and ultrasound for breast cancer screening in Japan
Correction to: Overall assessment system of combined mammography and ultrasound for breast cancer screening in Japan Open
View article: Overall assessment system of combined mammography and ultrasound for breast cancer screening in Japan
Overall assessment system of combined mammography and ultrasound for breast cancer screening in Japan Open
Mammography is the only screening method with evidence in support of reduced breast cancer mortality, but yields poor accuracy outcomes in women with dense breast tissue. The Japan Strategic Anti-cancer Randomized Trial (J-START) was condu…
View article: Risk-stratified breast cancer screening
Risk-stratified breast cancer screening Open
乳癌発症リスク層別化による乳がん検診は，不利益の少ない対費用効果も優れる乳がん検診になると考えられ，世界各国でトライアルが開始されている。未発症BRCA 遺伝子変異保持者をはじめとする乳癌high risk 群の乳がん検診は，究極のリスク層別化乳がん検診である。４０～４９歳の日本人女性を対象とした超音波検査併用検診マンモグラフィのランダム化比較試験J―START もリスク層別化乳がん検診の研究と解釈できる。乳癌発症リスクの決定方法として，Gail モデルを代表とする古典的な…
View article: The impact of the COVID−19 outbreak on the intention of women to undergo breast cancer screening
The impact of the COVID−19 outbreak on the intention of women to undergo breast cancer screening Open
2020年3月以来,日本国内での新型コロナウイルス流行の影響を受けて,乳がん検診の開始時期が多くの自治体や職域で延期となった。6月以降徐々に再開しているが,一般市民が検診受診についてどう考えているかは明らかではない。そこで今回,3月来の新型コロナウイルスの流行が,受診意図にどのような影響を与えているのか分析するためにアンケート調査を実施した。全国の40~69歳の一般女性に対し,2020年9月3~7日にインターネットによるアンケート調査を行い,4,700名から有効回答を得た。…
View article: Educational programs and campaigns for breast awareness is a right measure against false-negative mammogram issues due to dense breasts in Japan
Educational programs and campaigns for breast awareness is a right measure against false-negative mammogram issues due to dense breasts in Japan Open
View article: Cross-sectional online survey of knowledge of breast awareness, breast cancer screening, and familial/hereditary breast cancer in 1000 Japanese women
Cross-sectional online survey of knowledge of breast awareness, breast cancer screening, and familial/hereditary breast cancer in 1000 Japanese women Open
ブレスト・アウェアネスは「乳房を意識する生活習慣」であり，具体的には自分の乳房の状態を知り，乳房の変化に気を付け，変化に気付いたらすぐ医師に相談し，４０歳になったら２年に１回乳がん検診を受けるという４つの習慣のことである。ブレスト・アウェアネスを啓発・促進することは今後の乳癌対策として期待されるが，現在のところ日本の一般女性に周知されているかは不明である。また，わが国の乳がん検診の受診率は低く，科学的根拠に基づく乳がん検診の理解が乏しいことも懸念されている。そこで今回，ブレ…