BMAI
バイオメディカルAI研究ユニット
バイオメディカルAI研究ユニット
Ja
バイオメディカルAI研究ユニットは2021年6月に設立されました。 Read more...
研究歴：
1993年- (株) 日立メディコ 技術研究所
1997年- 愛知県立大学 情報科学部
2001年- シカゴ大学 放射線学科/大学院医用物理学研究科/がん研究センター
2014年- イリノイ工科大学 医用画像研究所/電気電子工学研究科
2017年- 東京工業大学 科学技術創成研 Read more...
サーバー室
研究用GPUサーバー 21台
- i9-10980XE 18-Core/3.0GHz; RTX A6000x2; 128GB MEM; SSD 3.8TBx4 HDD 18TBx2
- i9-10940X 14-Core/3.3GHz; RTX 3090×2; 64GB MEM; SSD 960GB
- i9-10940X 14-Core/3.3GHz; RTX A6000; 64GB MEM; SSD 480GB
- EPYC 7502P 32-Core/2.5GHz; RTX A6000x Read more...
The conventional noise-reduction filters tend to blur the edge information while noise is reduced. To address this issue, we developed a supervised nonlinear filter based on an artificial neural network (ANN), called a “neural filter,” for reduction of noise in images. The neural filter is trained with input images and the corresponding teaching images. To reduce noise in images, we created Read more...
In order to gain insight into the internal presentation of a trained neural edge enhancer, we developed an analysis method for the nonlinear kernel of a trained neural edge enhancer. We trained a neural edge enhancer to enhance edges in noisy images. Our analysis method was applied to the trained neural edge enhancer with a five-by-five-pixel input kernel. Six graphs obtained by the analysis, w Read more...
We propose a new edge enhancer based on a modified multilayer neural network, which is called a “neural edge enhancer” (NEE), for enhancing the desired edges clearly from noisy images. The NEE is a supervised edge enhancer: through training with a set of input noisy images and teaching edges, the NEE acquires the function of a desired edge enhancer. The input images are synthesized from noi Read more...
Tracing of vessels is one of the most fundamental techniques in a computer-aided diagnostic (CAD) scheme for vascular systems. A major challenge of methods for tracing vessels is to trace vessels robustly against noise, vessel branching, vessel size changes, and curved vessels, because those factors often lead to errors in tracing. Among them, the robustness against vessel size changes is espec Read more...
We developed a method for extracting the left ventricular (LV) contours from left ventriculograms by means of a neural edge detector (NED) in order to extract the contours which agree with those traced by a cardiologist. The NED is a supervised edge detector based on a linear-output artificial neural network model, which is trained with a modified back-propagation training algorithm. The NED ca Read more...
We developed a supervised nonlinear filter based on an artificial neural network (ANN), called a “neural filter,” for reduction of quantum noise in coronary angiograms. The neural filter can be trained with input images and the corresponding teaching images. To learn the relationship between low-dose and high-dose x-ray images, we created simulated low-dose angiograms from actual high-dose Read more...