一种可在左心室辅助期间预防主动脉瓣关闭不全的带可回收支架新型导管

数据集获取（Figshare）

• 源站标题：A novel catheter with retractable stent that can prevent aortic insufficiency during left ventricular assist
• DOI：10.1371/journal.pone.0194658
• 发布日期：2018-04-02
• 文件数：4 个
• 文件总体积：194.84 MB
• 源站页面：https://plos.figshare.com/articles/dataset/A_novel_catheter_with_retractable_stent_that_can_prevent_aortic_insufficiency_during_left_ventricular_assist/6074699

命令行下载

curl -L -o "S1 Video.avi" "https://ndownloader.figshare.com/files/10949357"
curl -L -o "S2 Video.avi" "https://ndownloader.figshare.com/files/10949360"
curl -L -o "S3 Video.avi" "https://ndownloader.figshare.com/files/10949369"
curl -L -o "S4 Video.avi" "https://ndownloader.figshare.com/files/10949375"

文件清单

• S1 Video.avi（35.56 MB）
• S2 Video.avi（43.77 MB）
• S3 Video.avi（40.91 MB）
• S4 Video.avi（74.60 MB）

文件总体积 194.84 MB（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

Left ventricle (LV) assist, which refers to the use of a mini-pump or catheter implanted across the aortic valve connected to the pump, can promote myocardial recovery after left ventricle failure. However, conventional LV assist catheters compress the aortic valve, which can induce aortic insufficiency. Here we describe a novel LV assist catheter containing a retractable stent at its distal end that may prevent such insufficiency. The device was tested in six goats in which the coronary artery was ligated to induce acute LV failure, and then an LV assist was installed with a novel catheter in the left ventricle via the left subclavian artery. Inserting the catheter into the left ventricle caused mild to moderate aortic insufficiency. Releasing the stent maintained the catheter in the center of the three valve leaflets, which resolved the aortic insufficiency and, within a few minutes, led to significantly lower left ventricle end diastolic pressure (9.0±3.0 mmHg) than without stent release (17.6±5.0 mmHg, p = 0.012) as well as significantly higher left ventricle dP/dtmax (614±299 mmHg/s) than without stent release (343±245 mmHg/s, p = 0.03). Our results indicate that this novel drainage catheter with retractable stent can effectively prevent aortic insufficiency by maintaining the catheter in the center of the aortic valve leaflets, thereby lowering left ventricular end diastolic pressure and improving systolic function.

许可

CC BY 4.0

引用

学术使用请引用 DOI 10.1371/journal.pone.0194658（source: https://plos.figshare.com/articles/dataset/A_novel_catheter_with_retractable_stent_that_can_prevent_aortic_insufficiency_during_left_ventricular_assist/6074699）。