CF 支气管扩张试验

数据集获取

源站：https://clinicaltrials.gov/study/NCT03522831

标准获取流程：

1. 访问源站链接，注册/登录账号；
2. 进入数据集详情页，按页面指引申请权限或直接下载；
3. 部分平台提供 SDK，例如：
   • OpenDataLab: pip install openxlab 后 openxlab.dataset.get(...)
   • ModelScope: pip install modelscope 后 modelscope download
   • 天池: 登录后页面提供直链下载
     以源站「数据下载/使用文档」页面为准。

数据说明

Conditions: Lung Diseases, Cystic Fibrosis. BACKGROUND Exertional dyspnea is a symptom that reduces quality of life and is associated with reduced exercise tolerance in individuals with cystic fibrosis (CF). Lung hyperinflation has been suggested to be an important factor contributing to dyspnea in CF. Dynamic hyperinflation during exercise testing has been reported in up to 58% of CF patients with mild-to-moderate CF lung disease and is associated with reduced exercise tolerance and increased exertional dyspnea. Dynamic lung hyperinflation also occurs in chronic obstructive pulmonary disease (COPD) and is believed to be a major cause of exertional dyspnea and exercise limitation. Bronchodilator use in COPD has been shown to reduce lung hyperinflation and improve exertional dyspnea and exercise tolerance; however, there is limited data available in CF despite the pathophysiological similarities between these conditions. Although a majority of individuals six years and older with CF are prescribed bronchodilators, evidence to support the chronic use of bronchodilators has been insufficient. Unlike acute bronchodilator reversibility testing during routine spirometry, cardiopulmonary exercise testing (CPET) is a highly sensitive and reproducible tool to assess the efficacy of bronchodilators in CF. CPET can be used to identify significant physiological abnormalities even in patients with mild CF lung disease with relatively normal spirometry. Compared to healthy age-matched controls during exercise, adults with mild-to-moderate CF have: greater exertional dyspnea; higher ventilatory requirements; earlier constraints on tidal volume expansion; increased operating lung volumes; an earlier onset of unpleasant dyspnea descriptors (i.e. unsatisfied inspiration); and are more likely to experience “chest tightness”. All of these abnormalities are, in theory, amenable to change following bronchodilator therapy. Very few studies have evaluated the effects of short-acting bronchodilators on exercise in CF using CPET. In t

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。