๋ณธ๋ฌธ ๋ฐ”๋กœ๊ฐ€๊ธฐ

Study/Bio, Medical Engineering6

[Medical][Data] Creation and validation of a chest X-ray dataset with eye-tracking and report dictation for AI development, Sci Data 8, 92 (2021)(๋…ผ๋ฌธ๋ฆฌ๋ทฐ) โœจ ABSTRACTโ—‹  Developing a rich dataset : CXR image, transcribed radiology report text, radiologist's dictation audio and eye gaze coordinates data.โ—‹  Validating dataset by using deep learning experiments .  โœจ BACKGROUNDโ—‹  In the past five decades eye-tracking has been extensively used in radiology for education, perception understadning, and fatigue measurement.๋”๋ณด๊ธฐ1. Waite, S. A. et al. Analysis.. 2024. 1. 11.
[AI][Medical] Follow My Eye: Using Gaze to Supervise Computer-Aided Diagnosis (IEEE Trans Med Imaging. 2022 Jul) (๋…ผ๋ฌธ๋ฆฌ๋ทฐ) ์›๋ฌธ์ถœ์ฒ˜: https://ieeexplore.ieee.org/document/9694633 Follow My Eye: Using Gaze to Supervise Computer-Aided DiagnosisWhen deep neural network (DNN) was first introduced to the medical image analysis community, researchers were impressed by its performance. However, it is evident now that a large number of manually labeled data is often a must to train a properly functionieeexplore.ieee.org โœจ ABSTRA.. 2024. 1. 8.
[Medical] Eye Motion Tracking for Medical Image Interpretation Training (Current Problems in Diagnostic Radiology, 2023) (๋…ผ๋ฌธ๋ฆฌ๋ทฐ) โœจ MAIN IDEAUSAF(United States Air Force)์—์„œ๋Š” ์‹ค์ œ๋กœ ๊ต์œก์„ ์œ„ํ•ด Eye Motion Tracking์„ ์‚ฌ์šฉํ•œ๋‹ค. ์ด๋ฅผ ์˜ํ•™ ๊ต์œก์— ๋„์ž…ํ•˜๊ณ ์ž, Novice reader(jounior residents)๋ฅผ ๊ต์œกํ•˜๊ธฐ ์œ„ํ•ด ์‹ค์‹œ๊ฐ„ Eye Motion Tracking์„ ์‚ฌ์šฉํ•˜๊ณ  ๊ทธ ํšจ๊ณผ๋ฅผ ๊ฒ€์ฆํ•˜๋Š” ์—ฐ๊ตฌ๋ฅผ ์ง„ํ–‰ํ–ˆ๋‹ค. ๋‹ค์‹œ๋งํ•ด ์ด paper๋Š” novice reader์˜ Eye Motion Tracking์„ expert๊ฐ€ ์‹ค์‹œ๊ฐ„ ํ”ผ๋“œ๋ฐฑํ•˜๋Š” ๊ต์œก ์‹œ์Šคํ…œ์„ ๊ตฌ์ถ•ํ•˜๊ณ  ๊ทธ ํšจ๊ณผ๋ฅผ ํ‰๊ฐ€ํ•œ ์—ฐ๊ตฌ๋ฅผ ์ •๋ฆฌํ•œ ๊ฒƒ์ด๋‹ค.  โœจ METHODS์‹ค์‹œ๊ฐ„ Eye Motion Tracking ์ „๋ฌธ๊ฐ€์˜ ๊ตฌ๋‘ ์ง€์‹œ๋ฅผ ํ†ตํ•ฉํ•˜์—ฌ ์ดˆ๋ณด์ž๋ฅผ ๊ต์œกํ•œ๋‹ค. ์‹คํ—˜์—๋Š” Dell Precision 7535 ์ปดํ“จํ„ฐ์™€ Gazepoint .. 2024. 1. 2.
[Bio] #3 CT(Computed Tomography), matlab์œผ๋กœ CT ๊ตฌํ˜„ํ•˜๊ธฐ(๋ผ๋ˆ ์—ญ๋ณ€ํ™˜) ์šฐ๋ฆฌ๊ฐ€ ํ”ํžˆ ์”จํ‹ฐ(CT) ์ดฌ์˜์ด๋ผ๊ณ  ๋งํ•˜๋Š” ์ปดํ“จํ„ฐ๋‹จ์ธต์ดฌ์˜(Computed Tomography scan)์— ๋Œ€ํ•ด ์•Œ์•„๋ณด์ž. CT๋ž€? CT scanner์˜ ๊ตฌ์กฐ๋ฅผ ๋ณด๋ฉด ์•Œ ์ˆ˜ ์žˆ๋“ฏ์ด, ์—ฌ๋Ÿฌ ๋ฐฉํ–ฅ์—์„œ ์—‘์Šค์„  ํˆฌ๊ณผ๊ธฐ๋ฒ•์œผ๋กœ ์ธ์ฒด ๋‹จ๋ฉด์„ ์ดฌ์˜ํ•˜์—ฌ ๋ณต์›ํ•˜๋Š” ์˜๋ฃŒ์˜์ƒ์ดฌ์˜๋ฒ•์ด๋‹ค. ์œ„์˜ ์‚ฌ์ง„์ฒ˜๋Ÿผ ์ธ์ฒด์˜ ํšก๋‹จ๋ฉด ํ•˜๋‚˜์— ๋Œ€ํ•ด, ์ „ ๋ฐฉํ–ฅ์—์„œ X์„ ์„ ์†ก, ์ˆ˜์‹ ํ•˜์—ฌ ์—ฌ๋Ÿฌ์žฅ์˜ ์˜์ƒ์„ ์ดฌ์˜ํ•ด ํšก๋‹จ๋ฉด ํ•˜๋‚˜์˜ ์˜์ƒ์œผ๋กœ ํ•ฉํ•œ๋‹ค. ์™ผ์ชฝ ์‚ฌ์ง„์˜ ํฐ์ƒ‰ ๊ทธ๋ž˜ํ”„๋ฅผ ๋ณด๋ฉด, ํˆฌ๊ณผํ•œ X์„ ๋“ค์ด ํ•œ ํ‰ํ–‰ํ•œ ์„ผ์„œ์— ๊ฐ์ง€๋˜๋Š” ๊ฒƒ์„ ์•Œ ์ˆ˜ ์žˆ๋‹ค. ์ด๋•Œ ์„ผ์„œ์— ๋งบํžŒ X์„  ํก๊ด‘๋„๋ฅผ ์—ฌ๋Ÿฌ ๋ฐฉํ–ฅ์— ๋Œ€ํ•ด ํ•ฉํ•œ ๋’ค ๊ทธ๋ž˜ํ”„๋กœ ์‹œ๊ฐํ™”ํ•œ ๊ฒƒ์ด ์˜ค๋ฅธ์ชฝ ์‚ฌ์ง„์˜ ์‚ฌ์ด๋…ธ๊ทธ๋žจ(sinogram)์ด๋‹ค. ์—ฌ๊ธฐ์„œ ์งš๊ณ  ๋„˜์–ด๊ฐˆ ๊ฐœ๋…์ด '๋ผ๋ˆ ๋ณ€ํ™˜(Radon transform)'์ด๋‹ค. Rf(α,s.. 2023. 7. 26.
[Bio] #2 Matlab์œผ๋กœ DFT ๊ตฌํ˜„ํ•˜๊ธฐ ์ด๋ฏธ์ง• ์‹œ์Šคํ…œ์„ ์ฒ˜๋ฆฌํ•˜๋Š” ๊ฒƒ์€ ๊ฒฐ๊ตญ ์‹ ํ˜ธ๋ฅผ ์ฒ˜๋ฆฌํ•˜๋Š” ๊ฒƒ๊ณผ ๊ฐ™๋‹ค. ๋”ฐ๋ผ์„œ ์‹ ํ˜ธ ์ฒ˜๋ฆฌ์— ๊ธฐ์ดˆ๊ฐ€ ๋˜๋Š” ํ‘ธ๋ฆฌ์— ๋ณ€ํ™˜(Fourier Transform)๊ณผ ์—ญ๋ณ€ํ™˜(Inverse Fourier Transform)์„ ์•Œ์•„์•ผ ํ•œ๋‹ค. (์‹ ํ˜ธ ๋ฐ ์‹œ์Šคํ…œ ๊ณผ๋ชฉ์„ ์—‰๋ง์œผ๋กœ ๋“ค์—ˆ๋˜ ๋‚ด๊ฒ ์ƒ๋‹นํ•œ ๊ณค์š•์ด์—ˆ๋‹ค.) ์ˆ˜ํ•™์  ์œ ๋„๋Š” ์ฐจ์น˜ํ•˜๊ณ , ๊ด‘ํ•™์ ์ธ ๊ด€์ ์—์„œ ํ‘ธ๋ฆฌ์— ๋ณ€ํ™˜์ด ์–ด๋–ป๊ฒŒ ์‚ฌ์šฉ๋˜๋Š”์ง€ ์•Œ์•„๋ณด์ž. ๊ด‘ํ•™ ๋ถ„์•ผ ๋ฟ ์•„๋‹ˆ๋ผ ์ปดํ“จํ„ฐ ๋น„์ „(Computer Vision)์—์„œ๋Š” ํŠนํžˆ, ํ‘ธ๋ฆฌ์— ๋ณ€ํ™˜์„ ์‚ฌ์šฉํ•œ๋‹ค๋Š” ๊ฒƒ์ด ์‹ ํ˜ธ๋ฅผ spatial domain์—์„œ frequency domain์œผ๋กœ ๋ณ€ํ™˜ํ•œ๋‹ค๋Š” ๊ฒƒ์„ ์˜๋ฏธํ•œ๋‹ค. Discreteํ•œ domain์—์„œ ์‹ ํ˜ธ๋ฅผ ํ‘ธ๋ฆฌ์— ๋ณ€ํ™˜ํ•  ๋•Œ๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ณต์‹์„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋‹ค. ์ด๋ฅผ ์ด์‚ฐ ํ‘ธ๋ฆฌ์— ๋ณ€ํ™˜(Discrete.. 2023. 7. 25.
[Bio] #1 ์ „๊ธฐ์ „์ž์—์„œ ๋ฐ”์ด์˜ค? ๋ฐ”์ด์˜ค์ „๊ธฐ์ „์ž ๋ธ”๋กœ๊ทธ ์ฒซ๋ฒˆ์งธ ๊ฒŒ์‹œ๋ฌผ์ด๋‹ค. ๊ธฐ๋…์ ์ธ ์ฒซ ๊ธ€์€ ์ง€๋‚œ 23-1ํ•™๊ธฐ ๋‚˜๋ฅผ ๊ดด๋กญํ˜”๋˜ '๋ฐ”์ด์˜ค์ „๊ธฐ์ „์ž๊ธฐ์ดˆ' ๊ณผ๋ชฉ์—์„œ ๊ณต๋ถ€ํ•œ ๋‚ด์šฉ์„ ์ ์–ด ๋ณด๊ธฐ๋กœ ํ–ˆ๋‹ค. ์ „๊ธฐ์ „์ž๊ณตํ•™์ธ๋ฐ ๋ฐ”์ด์˜ค? 1๋…„์˜ ํœดํ•™์„ ๋งˆ์น˜๊ณ  ์ƒˆ๋กœ ์‹œ์ž‘ํ•˜๋Š” ๋งˆ์Œ์œผ๋กœ 2023๋…„์„ ๋งž์ดํ–ˆ๋‹ค. ํ•™๋ถ€ 3ํ•™๋…„์„ ์‹œ์ž‘ํ•˜๋˜ ๋‚ด๊ฒŒ ๊ฐ€์žฅ ๊ณ ๋ฏผ์ด๋˜ ๊ฒƒ๋“ค์€ (๋ฌผ๋ก  ์ง€๊ธˆ๋„) > ์–ด๋–ค ๊ธธ์„ ๊ฐ€์ง€? > ๋ญ ํ•ด๋จน๊ณ  ์‚ด์ง€? > ๋Œ€ํ•™์›? ์ทจ์—…? ์ด๋‹ค. 3ํ•™๋…„์ด ๋˜๋‹ˆ ์ „๊ณตํ•„์ˆ˜๊ฐ€ ์•„๋‹Œ ์ „๊ณต์„ ํƒ ๊ณผ๋ชฉ๋“ค์„ ๋งŽ์ด ๋“ฃ๊ฒŒ ๋˜์—ˆ๋Š”๋ฐ, ๋‚˜๋Š” >๋ฐ”์ด์˜ค์ „๊ธฐ์ „์ž๊ธฐ์ดˆ 2023. 7. 25.