Dr. Wontaek Seo Profile

Dr. Wontaek Seo

Director at GMT Corp.

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Publications (4)

Proceedings Article | 4 April 2022 Presentation + Paper

A robust method of identifying the optimal cancellation parameters for dual-energy chest x-ray imaging

Ilwoong Choi, Ibragim Atadjanov, Wontaek Seo, Mijung Jo, Junekyu Park, Jeongmin Ahn, Taehee Kim, Hyunjong Kim, Choul Woo Shin

Proceedings Volume 12031, 1203111 (2022) https://doi.org/10.1117/12.2612442

KEYWORDS: Bone, Chest imaging, X-rays, Tissues, Signal attenuation, Dual energy imaging, Image registration, Calibration, X-ray imaging, Imaging technologies

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Proceedings Article | 4 April 2022 Presentation + Paper

A feasibility study of dual-energy digital breast tomosynthesis for three-compartment-breast imaging

Hyeongseok Kim, Hoyeon Lee, Seoyoung Lee, Young-Wook Choi, Young Jin Choi, Kee Hyun Kim, Wontaek Seo, Choul Woo Shin, Seungryong Cho

Proceedings Volume 12031, 1203103 (2022) https://doi.org/10.1117/12.2611606

KEYWORDS: Digital breast tomosynthesis, Proteins, Calibration, Breast, X-rays, Prototyping, Data acquisition, Tissues, Solids, Diagnostics

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Proceedings Article | 16 March 2020 Paper

Preliminary data on TruviewMAG to assess the visibility of microcalcifications and image quality of mammograms: comparison with the standard magnification view

Soo-Yeon Kim, Wontaek Seo, Ann Yi, Su Hyun Lee, Su Min Ha, Eun Sil Kim, Kahee Jung, Yong Ju Na, Mijung Jo, Choul Woo Shin, Jung Min Chang

Proceedings Volume 11312, 113125D (2020) https://doi.org/10.1117/12.2549259

KEYWORDS: Mammography, Image quality standards, Visibility, Image quality, Biopsy, Digital mammography, Breast, Image segmentation, Standards development, Spatial resolution

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Purpose: To compare the visibility of microcalcifications and image quality of specimen mammograms obtained with the digital magnification algorithm(TruviewMAG) view and standard magnification view

Materials and Methods: Nineteen women (median age, 49 years; ranges, 38-71 years) who underwent stereotactic biopsy or ultrasound-guided vacuum-assisted biopsy for suspicious microcalcifications detected at mammography were prospectively enrolled. After biopsy, specimen mammograms were obtained to confirm the removal of microcalcifications. A pair of specimen mammogram were obtained with both TruviewMAG view (DRTECH Corp., Seongnam, Korea) and standard magnification view. Four blinded readers independently evaluated visibility of microcalcifications, contrast and resolution of specimen mammograms using a 10-point scale (1, poor; 10, excellent), and preference. In addition to specimen mammograms, we performed pilot clinical test to evaluate the visibility of microcalcifications in two patients.

Results: The visibility of microcalcifications on specimen mammograms obtained with TruviewMAG view was comparable to those obtained with standard magnification view in overall reading (mean, 8.2±1.8 vs. 8.1±1.4, P = .893). The contrast of specimen mammograms obtained with TruviewMAG view was comparable to those obtained with standard magnification view in overall reading (mean, 7.8±1.6 vs. 7.8±1.4, P = .827). The resolution of specimen mammograms obtained with TruviewMAG view was comparable to those obtained with standard magnification view in overall reading (mean, 7.7±1.7 vs. 7.5±1.3, P = .173). Four readers preferred TruviewMAG view and standard magnification view at equal rates. The mean entrance surface dose for TruviewMAG view was 2.88mGy, which was 58.3% reduction compared to 4.94 mGy in standard magnification view. The visibility of microcalcifications were similar in two patients (one with benign fibrocytic change, and the other with invasive ductal carcinoma)

Conclusion: The visibility of microcalcifications and image quality of the specimen mammograms obtained with TruviewMAG view was comparable with those obtained with standard magnification view. In clinical patients data, microcalcifications were well visualized on TruviewMAG view, even though prospective study with larger study population is needed to confirm our finding.

Proceedings Article | 1 March 2019 Paper

Comparison of digital mammograms obtained with the cassette-type retrofit mammography flat panel detector installed on an analog system and the conventional full-field digital mammography

Wontaek Seo, Su Hyun Lee, Kahee Jung, Mijung Jo, Hyeonran Lee, Choul Woo Shin, Jung Min Chang

Proceedings Volume 10948, 109485X (2019) https://doi.org/10.1117/12.2512709

KEYWORDS: Mammography, Digital mammography, Image quality, Breast, Visibility, Image quality standards, Digital imaging, Analog electronics, Sensors, Breast cancer

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