A5100778142- Breast Lesions and Carcinomas
- Breast Cancer Treatment Studies
- AI in cancer detection
- Radiomics and Machine Learning in Medical Imaging
- MRI in cancer diagnosis
- Catalytic Processes in Materials Science
- Digital Radiography and Breast Imaging
- Lung Cancer Treatments and Mutations
- Cancer and Skin Lesions
- Electrocatalysts for Energy Conversion
- Global Cancer Incidence and Screening
- Medical Imaging Techniques and Applications
- Catalysis and Oxidation Reactions
- Cytokine Signaling Pathways and Interactions
- Salivary Gland Tumors Diagnosis and Treatment
- Advanced MRI Techniques and Applications
- Cancer Mechanisms and Therapy
- Copper-based nanomaterials and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Breast Implant and Reconstruction
- Educational Systems and Policies
- Advanced Photocatalysis Techniques
- Photoacoustic and Ultrasonic Imaging
- Cancer Diagnosis and Treatment
- HER2/EGFR in Cancer Research
Seoul National University Bundang Hospital
2015-2024
Ajou University
2009-2024
Seoul National University Hospital
2005-2022
New Generation University College
2019-2022
Seoul National University
2007-2022
National University College
2019-2020
Hallym University Sacred Heart Hospital
2019
Institute for Basic Science
2013-2018
Korea Advanced Institute of Science and Technology
2012-2018
Government of the Republic of Korea
2016-2018
<h3>Importance</h3> Younger women (aged ≤50 years) who underwent breast conservation therapy may benefit from magnetic resonance imaging (MRI) screening as an adjunct to mammography. <h3>Objective</h3> To prospectively determine the cancer yield and tumor characteristics of combined mammography with MRI or ultrasonography in for cancers were 50 years younger at initial diagnosis. <h3>Design, Setting, Participants</h3> This multicenter, prospective, nonrandomized study was conducted December...
We propose a framework for localization and classification of masses in breast ultrasound images. have experimentally found that training convolutional neural network-based mass detectors with large, weakly annotated datasets presents non-trivial problem, while overfitting may occur those trained small, strongly datasets. To overcome these problems, we use dataset together smaller hybrid manner. systematic semi-supervised scenario appropriate loss selection. Experimental results show the...
Energy dissipation at surfaces and interfaces is mediated by excitation of elementary processes, including phonons electronic excitation, once external energy deposited to the surface during exothermic chemical processes. Nonadiabatic in catalytic reactions results flow energetic electrons with an 1-3 eV when converted electron on a short (femtosecond) time scale before atomic vibration adiabatically dissipates (in picoseconds). These that are not thermal equilibrium metal atoms called "hot...
To evaluate the value of computer-aided diagnosis (CAD) program applied to diagnostic breast ultrasonography (US) based on operator experience.US images 100 masses from 91 women over 2 months (from May June 2015) were collected and retrospectively analyzed. Three less experienced imaging radiologists analyzed US features without with CAD according Breast Imaging Reporting Data System (BI-RADS) lexicon categories. We then compared performance between interobserver agreement among...
Mechanical properties of biological systems provide useful information about the biochemical status cells and tissues. Here, an artificial tactile neuron enabling spiking representation stiffness neural network (SNN)-based learning for disease diagnosis is reported. An based on ovonic threshold switch serving as soma a piezoresistive sensor mechanoreceptor developed shown to encode elastic pressed materials into spike frequency evolution patterns. SNN-based ultrasound elastography images...
Hybrid nanocatalysts consisting of metal nanoparticle-semiconductor junctions offer an interesting platform to study the role metal-oxide interfaces and hot electron flows in heterogeneous catalysis. Here, we report that carriers generated upon photon absorption significantly impact catalytic activity CO oxidation. We found Pt-CdSe-Pt nanodumbbells exhibit a higher turnover frequency by factor 2 during irradiation light with energy than bandgap CdSe, while rate on bare Pt nanoparticles did...
The objective of our study was to retrospectively assess the potential role sonographic features and biopsy in management patients with papillary lesions diagnosed at percutaneous sonographically guided biopsy.Surgical or follow-up (> = 2 years) available 123 women (age range, 21-75 years; mean age, 47 124 core needle vacuum-assisted during a 7-year period. Surgical excision results sonograms no change 2-year served as reference standard. We reviewed features, results, surgical follow-up....
The aim of this study was to compare the performance image analysis for predicting breast cancer using two distinct regression models and evaluate usefulness incorporating clinical demographic data (CDD) into in order improve diagnosis cancer.This included 139 solid masses from patients who underwent a ultrasonography-guided core biopsy had available CDD between June 2009 April 2010. Three radiologists retrospectively reviewed described each lesion Breast Imaging Reporting Data System...
Hot electrons and surface-plasmon-driven chemistry are amongst the most actively studied research subjects because they deeply associated with energy dissipation conversion processes at surface interfaces, which still open questions key issues in science community. In this topical review, we give an overview of concept hot or surface-plasmon-mediated generated under various structural schemes (i.e. metals, metal–semiconductor, metal–insulator–metal) their role affecting catalytic activity...
Background Little is known regarding findings at imaging associated with survival in patients luminal breast cancer treated neoadjuvant chemotherapy (NAC). Purpose To determine the relationship between (MRI, US, and mammography) clinical-pathologic variables predicting distant metastasis-free (DMFS) overall (OS) NAC. Materials Methods In this retrospective study, consecutive women who underwent NAC followed by surgery were identified from registries of two hospitals. Women one hospital...
Hierarchical N‐doped TiO 2 nanostructured catalysts with micro‐, meso‐, and macroporosity are synthesized by a facile self‐formation route using ammonia titanium isopropoxide precursor. UV–vis diffuse reflectance spectra confirm the red shift band gap narrowing due to doping of N species in nanoporous catalyst. fibrous channel patterning is observed well preserved even after calcination at 800 °C, indicating thermal stability, whereas micro‐ mesoporosity lost 500 °C. The photocatalytic...
The smart design of nanocatalysts can improve the catalytic activity transition metals on reducible oxide supports, such as titania, via strong metal–support interactions. In this work, we investigated two-dimensional Pt nanoparticle/titania systems under CO oxidation reaction. Arc plasma deposition (APD) and metal impregnation techniques were employed to achieve nanoparticle titania which prepared by multitarget sputtering sol–gel techniques. APD nanoparticles with an average size 2.7 nm...
Re-excisions after breast-conserving surgery (BCS) for breast cancer cause delays in the adjuvant treatment, increased morbidity, and leads to poor aesthetic results. Thus, efforts reduce re-excision rate are essential. This study aimed conclusively determine factors associated with BCS.We retrospectively reviewed medical records pathological reports of 711 cases that underwent BCS early-stage cancer. Univariate multivariate analyses were performed.Of BCS, 71 (10.0%) required re-excision....
Abstract Precise sentinel lymph node (SLN) identification is crucial not only for accurate diagnosis of micro-metastases at an early stage cancer progression but also reducing the number SLN biopsies (SLNB) to minimize their severe side effects. Furthermore, it desirable that SLNB guidance should be as safe possible in routine clinical use. Although there are currently various methods pre-operative or intra-operative assessment, none ideal. We propose a real-time method using...
Objective: To synthesize mesoporous silica-core-shell magnetic nanoparticles (MNPs) encapsulated by liposomes (Lipo [MNP@m-SiO2]) in order to enhance their stability, allow them be used any buffer solution, and produce trastuzumabconjugated (Lipo[MNP@m-SiO2]-Her2Ab) utilized vitro for the targeting of breast cancer. Materials Methods:The physiochemical characteristics Lipo[MNP@m-SiO2] were assessed terms size, morphological features, safety.The multimodal imaging properties organic dye...
The management of benign intraductal papilloma (IDP) without atypia diagnosed on core needle biopsy (CNB) remains controversial. This study was performed to evaluate the rate upgrading malignancy or high-risk lesions after excision and identify factors associated with using a large series IDP cases atypia.
Background Recent studies suggest that US-guided directional vacuum-assisted removal (DVAR) is a satisfactory alternative to surgery for benign papilloma of the breast and recommend discretionary diagnostic US follow-up without intervention. Purpose To compare outcomes atypia diagnosed with core needle biopsy (CNB) in patients who underwent DVAR, intervention, or surgery. Materials Methods This retrospective review included consecutive CNB between January 2005 September 2015. Five hundred...
Objective: To compare the outcomes of 14-gauge automated biopsy and 11gauge vacuum-assisted for sonographically guided core biopsies breast lesions. Materials Methods:We retrospectively reviewed all performed from January 2002 to February 2004.The were with using a gun on 562 lesions or an 11-gauge device 417 lesions.The histologic findings compared surgical, imaging follow-up findings.The underestimation rate, repeat rate false negative rates between two groups.Results: A was 49 benign...
To retrospectively evaluate the sensitivity of performance a computer-aided detection (CAD) system applied to full-field digital mammograms for breast cancers in screening group, with histologic findings as reference standard.This study had institutional review board approval, and patient informed consent was waived. A commercially available CAD 103 women (mean age, 51 years; range, 35-69 years) detected screening. Sensitivity values according mammographic appearance, composition, were...
MRI of the Breast for Detection and Assessment Size Ductal Carcinoma in SituObjective: The aim study was to compare accuracy magnetic resonance imaging (MRI) mammography detection assessment size ductal carcinoma situ (DCIS). Materials Methods:The preoperative contrast-enhanced were analyzed respect DCIS 72 patients (age range: 30 67 years, mean age: 47 years).The mammographic measurements compared with histopathologic using Pearson's correlation coefficients Mann-Whitney u test.We evaluated...
Screening-Detected and Symptomatic Ductal Carcinoma in Situ: Differences the Sonographic Pathologic FeaturesHee Jung Shin1, Hak Hee Kim1, Sun Mi Gui Young Kwon2, Gyungyub Gong2 On Koo Cho3Audio Available | Share