基于雷达的头部血液积聚无接触监测技术：一项数值研究

数据集获取（Figshare）

• 源站标题：Radar based technology for non-contact monitoring of accumulation of blood in the head: A numerical study
• DOI：10.1371/journal.pone.0186381
• 发布日期：2017-10-12
• 文件数：3 个
• 文件总体积：231.52 KB
• 源站页面：https://plos.figshare.com/articles/dataset/Radar_based_technology_for_non-contact_monitoring_of_accumulation_of_blood_in_the_head_A_numerical_study/5496310

命令行下载

curl -L -o "S1 Fig.tif" "https://ndownloader.figshare.com/files/9510421"
curl -L -o "S2 Fig.tif" "https://ndownloader.figshare.com/files/9510424"
curl -L -o "S3 Fig.tif" "https://ndownloader.figshare.com/files/9510433"

文件清单

• S1 Fig.tif（58.45 KB）
• S2 Fig.tif（80.34 KB）
• S3 Fig.tif（92.73 KB）

文件总体积 231.52 KB（源站 API 实测）。

数据加载示例（图像类）

from PIL import Image
import glob, os

files = (glob.glob(os.path.join(path, "**", "*.png"), recursive=True)
       + glob.glob(os.path.join(path, "**", "*.jpg"), recursive=True)
       + glob.glob(os.path.join(path, "**", "*.tif"), recursive=True))
print("图像文件数:", len(files))
img = Image.open(files[0]); print("尺寸/模式:", img.size, img.mode)

# torchvision Dataset 方式:
# from torchvision import datasets
# ds = datasets.ImageFolder(path)  # 要求 子目录=类别

目录组织与标注格式以源站说明和下载后实际文件为准。

数据说明

Background
This theoretical study examines the use of radar to continuously monitor “accumulation of blood in the head” (ACBH) non-invasively and from a distance, after the location of a hematoma or hemorrhage in the brain was initially identified with conventional medical imaging. Current clinical practice is to monitor ABCH with multiple, subsequent, conventional medical imaging. The radar technology introduced in this study could provide a lower cost and safe alternative to multiple conventional medical imaging monitoring for ACBH.
Materials and methods
The goal of this study is to evaluate the feasibility of using radar to monitor changes in blood volume in the brain through a numerical simulation of ACBH monitoring from remote, with a directional spiral slot antennae, in 3-D models of the brain. The focus of this study is on evaluating the effect of frequencies on the antennae reading. To that end we performed the calculations for frequencies of 100 MHz, 500 MHz and 1 GHz.
Results and discussion
The analysis shows that the ACBH can be monitored with radar and the monitoring resolution improves with an increase in frequency, in the range studied. However, it also appears that when typical clinical dimensions of hematoma and hemorrhage are used, the variable ratio of blood volume radius and radar wavelength can bring the measurements into the Mie and Rayleigh regions of the radar cross section. In these regions there is an oscillatory change in signal with blood volume size. For some frequencies there is an increase in signal with an increase in volume while in others there is a decrease.
Conclusions
While radar can be used to monitor ACBH non-invasively and from a distance, the observed Mie region dependent oscillatory relation between blood volume size and wavelength requires further investigation. Classifiers, multifrequency algorithms or ultra-wide band radar are possible solutions that should be explored in the future.

许可

CC BY 4.0

引用

学术使用请引用 DOI 10.1371/journal.pone.0186381（source: https://plos.figshare.com/articles/dataset/Radar_based_technology_for_non-contact_monitoring_of_accumulation_of_blood_in_the_head_A_numerical_study/5496310）。