Pathology-Anchored Transcranial Sonography: A Cascaded Super-Resolution Deep Learning System for Early-Stage Parkinson's Disease Grading.
The 3 matches
- [1] § Methods › Comparison studies ↔ Final_test/Process_fold_Efficient.py, lines 182–233 · score 0.51 · EfficientNet b7, b0, Transformer, models
- [2] § Methods › Comparison studies ↔ Final_test/Process_fold_efficient_v2.py, lines 182–220 · score 0.51 · EfficientNet b0, b7, Transformer, models
- [3] § Methods › Cascaded super-resolution deep learning system ↔ Final_test/Process_fold_transformer.py, lines 64–95 · score 0.51 · random rotation, augmentation, mirror, flipping, resized, classification
Paper
Loaded from Europe PMC by your browser, not stored by OSCR: doi.org · Europe PMC
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The authors' code
Python · 353 lines · 14 KB · no license · 1 match
- import sys
- from tqdm import tqdm
- import torch
- from torch import nn
- from torchvision import transforms
- from torch.utils.data import DataLoader, Dataset
- from sklearn.metrics import roc_curve, auc, confusion_matrix, classification_report
- from sklearn.model_selection import StratifiedKFold
- from PIL import Image
- import numpy as np
- import matplotlib.pyplot as plt
- import os
- from torchvision import transforms, models
- # ====================
- # 配置设备
- # ====================
- device = "cuda" if torch.cuda.is_available() else "mps" if torch.backends.mps.is_available() else "cpu"
- print(f"Using {device} device")
- # ====================
- # 数据集类
- # ====================
- class VideoFrameDataset(Dataset):
- def __init__(self, file_path, transform=None):
- self.file_path = file_path
- self.transform = transform
- self.imgs = []
- self.labels = []
- with open(self.file_path) as f:
- samples = [x.strip().rsplit(' ', 1) for x in f.readlines()]
- for img_path, label in samples:
- self.imgs.append(img_path)
- self.labels.append(int(label))
- def __len__(self):
- return len(self.imgs)
- def __getitem__(self, idx):
- image = Image.open(self.imgs[idx]).convert("RGB")
- if self.transform:
- image = self.transform(image)
- label = torch.tensor(self.labels[idx], dtype=torch.int64)
- return image, label
- # ====================
- # 数据增强
- # ====================
- data_transforms = transforms.Compose([
- transforms.Resize([300, 300]),
- transforms.RandomRotation(45),
- transforms.CenterCrop(256),
- transforms.RandomHorizontalFlip(p=0.5),
- transforms.RandomVerticalFlip(p=0.5),
- transforms.ColorJitter(brightness=0.4, contrast=0.4, saturation=0.4, hue=0.2),
- transforms.RandomGrayscale(p=0.2),
- transforms.ToTensor(),
- transforms.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225]),
- ])
- # ====================
- # 模型保存和加载
- # ====================
- def save_model(model, path):
- torch.save(model.state_dict(), path)
- print(f"Model saved to {path}")
- def load_model(model, path):
- if os.path.exists(path):
- model.load_state_dict(torch.load(path))
- print(f"Model loaded from {path}")
- else:
- print(f"Model path {path} does not exist.")
- # ====================
- # 定义训练和测试函数
- # ====================
- def train(dataloader, model, loss_fn, optimizer):
- model.train()
- total_loss = 0
- correct = 0
- for X, y in tqdm(dataloader, desc="Training"):
- X, y = X.to(device), y.to(device)
- pred = model(X)
- loss = loss_fn(pred, y)
- optimizer.zero_grad()
- loss.backward()
- optimizer.step()
- total_loss += loss.item() * X.size(0)
- correct += (pred.argmax(1) == y).sum().item()
- avg_loss = total_loss / len(dataloader.dataset)
- accuracy = correct / len(dataloader.dataset)
- return avg_loss, accuracy
- def test(dataloader, model, threshold=0.1):
- model.eval()
- total_loss = 0
- correct = 0
- all_labels = []
- all_preds = []
- with torch.no_grad():
- for X, y in tqdm(dataloader, desc="Testing"):
- X, y = X.to(device), y.to(device)
- pred = model(X)
- loss = loss_fn(pred, y)
- total_loss += loss.item() * X.size(0)
- all_labels.extend(y.cpu().numpy())
- pred_probs = torch.softmax(pred, dim=1)
- pred_classes = (pred_probs[:, 1] > threshold).long() # Class 1 is predicted as positive
- all_preds.extend(torch.softmax(pred, dim=1).cpu().numpy())
- correct += (pred.argmax(1) == y).sum().item()
- avg_loss = total_loss / len(dataloader.dataset)
- accuracy = correct / len(dataloader.dataset)
- return np.array(all_labels), np.array(all_preds), avg_loss, accuracy
- # ====================
- # 计算与显示评估指标
- # ====================
- def calculate_metrics(labels, preds, num_classes):
- pred_classes = preds.argmax(axis=1)
- cm = confusion_matrix(labels, pred_classes)
- class_report = classification_report(labels, pred_classes, target_names=[f'Class {i}' for i in range(num_classes)], output_dict=True)
- print("Classification Report:")
- print(classification_report(labels, pred_classes, target_names=[f'Class {i}' for i in range(num_classes)]))
- plt.figure(figsize=(8, 8))
- plt.imshow(cm, interpolation='nearest', cmap=plt.cm.Blues)
- plt.title("Confusion Matrix")
- plt.colorbar()
- tick_marks = np.arange(num_classes)
- plt.xticks(tick_marks, [f'Class {i}' for i in range(num_classes)], rotation=45)
- plt.yticks(tick_marks, [f'Class {i}' for i in range(num_classes)])
- plt.ylabel('True Label')
- plt.xlabel('Predicted Label')
- thresh = cm.max() / 2.0
- for i, j in np.ndindex(cm.shape):
- plt.text(j, i, f"{cm[i, j]}", horizontalalignment="center", color="white" if cm[i, j] > thresh else "black")
- plt.tight_layout()
- plt.show()
- return class_report
- def plot_roc_curve(labels, preds, fold):
- plt.figure(figsize=(10, 8))
- fpr = dict()
- tpr = dict()
- roc_auc = dict()
- for i in range(4): # 几分类任务
- fpr[i], tpr[i], _ = roc_curve(labels == i, preds[:, i])
- roc_auc[i] = auc(fpr[i], tpr[i])
- plt.plot(fpr[i], tpr[i], label=f'Class {i} (AUC = {roc_auc[i]:.2f})')
- plt.plot([0, 1], [0, 1], 'k--', lw=2)
- plt.xlim([0.0, 1.0])
- plt.ylim([0.0, 1.05])
- plt.xlabel('False Positive Rate')
- plt.ylabel('True Positive Rate')
- plt.title(f'ROC Curve (Fold {fold})')
- plt.legend(loc="lower right")
- plt.grid()
- plt.show()
- return roc_auc
- def plot_training_curves(train_losses, valid_losses, train_accuracies, valid_accuracies, fold):
- epochs = range(1, len(train_losses) + 1)
- plt.figure(figsize=(12, 5))
- plt.subplot(1, 2, 1)
- plt.plot(epochs, train_losses, label='Train Loss')
- plt.plot(epochs, valid_losses, label='Valid Loss')
- plt.xlabel('Epochs')
- plt.ylabel('Loss')
- plt.title(f'Loss Curve (Fold {fold})')
- plt.legend()
- plt.grid()
- plt.subplot(1, 2, 2)
- plt.plot(epochs, train_accuracies, label='Train Accuracy')
- plt.plot(epochs, valid_accuracies, label='Valid Accuracy')
- plt.xlabel('Epochs')
- plt.ylabel('Accuracy')
- plt.title(f'Accuracy Curve (Fold {fold})')
- plt.legend()
- plt.grid()
- plt.tight_layout()
- plt.show()
- # ====================
- # 主程序
- # ====================
- if __name__ == "__main__":
- mode = "test" # 训练模式:"train",测试模式:"test"
- model_path = "./saved_models/fold_1_model.pth"
- new_data_path = "./new_data/test_data.txt" # 新数据集路径(测试模式)
- dataset = VideoFrameDataset(file_path='./data/train_final.txt', transform=data_transforms)
- kfold = StratifiedKFold(n_splits=5, shuffle=True, random_state=42)
- labels = np.array(dataset.labels)
- if mode == "train":
- os.makedirs('./saved_models', exist_ok=True)
- all_fold_metrics = []
- for fold, (train_idx, valid_idx) in enumerate(kfold.split(np.zeros(len(labels)), labels), 1):
- print(f'Fold {fold}')
- train_subset = torch.utils.data.Subset(dataset, train_idx)
- valid_subset = torch.utils.data.Subset(dataset, valid_idx)
- train_dataloader = DataLoader(train_subset, batch_size=32, shuffle=True)
- valid_dataloader = DataLoader(valid_subset, batch_size=32, shuffle=False)
- # 修改为 EfficientNet-B0
- model = models.efficientnet_b7(pretrained=False)
- model.classifier[1] = nn.Linear(model.classifier[1].in_features, 4)
- model = model.to(device)
- optimizer = torch.optim.Adam(model.parameters(), lr=0.001, weight_decay=1e-5)
- scheduler = torch.optim.lr_scheduler.ReduceLROnPlateau(optimizer, mode='min', patience=3, factor=0.5, verbose=True)
- loss_fn = nn.CrossEntropyLoss()
- train_losses = []
- valid_losses = []
- train_accuracies = []
- valid_accuracies = []
- # 创建日志文件
- log_file = open(f'./logs/final_efficient07_fold_{fold}_log.txt', 'w')
- log_file.write("Epoch\tTrain Loss\tTrain Acc\tValid Loss\tValid Acc\n")
- for epoch in range(50): # 限制到50个epoch
- train_loss, train_accuracy = train(train_dataloader, model, loss_fn, optimizer)
- _, _, valid_loss, valid_accuracy = test(valid_dataloader, model)
- scheduler.step(valid_loss)
- train_losses.append(train_loss)
- valid_losses.append(valid_loss)
- train_accuracies.append(train_accuracy)
- valid_accuracies.append(valid_accuracy)
- # 打印每个 epoch 的指标
- print(f"Epoch {epoch + 1}:")
- print(f" Train Loss: {train_loss:.4f}, Train Accuracy: {train_accuracy:.4f}")
- print(f" Valid Loss: {valid_loss:.4f}, Valid Accuracy: {valid_accuracy:.4f}")
- # 将指标写入日志文件
- log_file.write(
- f"{epoch + 1}\t{train_loss:.4f}\t{train_accuracy:.4f}\t{valid_loss:.4f}\t{valid_accuracy:.4f}\n")
- # 关闭日志文件
- log_file.close()
- # 绘制训练曲线
- # plot_training_curves(train_losses, valid_losses, train_accuracies, valid_accuracies, fold)
- # 验证集测试与结果计算
- fold_labels, fold_preds, _, fold_accuracy = test(valid_dataloader, model)
- # fold_auc = plot_roc_curve(fold_labels, fold_preds, fold)
- # 计算分类报告和混淆矩阵
- # fold_metrics = calculate_metrics(fold_labels, fold_preds, num_classes=4)
- # 存储折叠结果
- # all_fold_metrics.append({
- # 'accuracy': fold_accuracy,
- # 'auc': fold_auc,
- # 'loss': valid_losses[-1],
- # 'metrics': fold_metrics
- # })
- # 保存模型
- model_save_path = f'./saved_models/efficientnet_b7_{fold}_final.pth'
- torch.save(model.state_dict(), model_save_path)
- print(f"Model for Fold {fold} saved at {model_save_path}")
- # ====================
- # 综合评估
- # ====================
- overall_accuracy = np.mean([m['accuracy'] for m in all_fold_metrics])
- overall_auc = np.mean([np.mean(list(m['auc'].values())) for m in all_fold_metrics])
- overall_loss = np.mean([m['loss'] for m in all_fold_metrics])
- print(f"\nFinal Overall Results:")
- print(f"Accuracy: {overall_accuracy:.4f}")
- print(f"AUC: {overall_auc:.4f}")
- print(f"Loss: {overall_loss:.4f}")
- # 平均 F1-Score, Precision, Recall
- precision_scores = [np.mean([m['metrics'][f'Class {i}']['precision'] for i in range(3)]) for m in all_fold_metrics]
- recall_scores = [np.mean([m['metrics'][f'Class {i}']['recall'] for i in range(3)]) for m in all_fold_metrics]
- f1_scores = [np.mean([m['metrics'][f'Class {i}']['f1-score'] for i in range(3)]) for m in all_fold_metrics]
- print(f"Average Precision: {np.mean(precision_scores):.4f}")
- print(f"Average Recall: {np.mean(recall_scores):.4f}")
- print(f"Average F1-Score: {np.mean(f1_scores):.4f}")
- elif mode == "test":
- test_dataset = VideoFrameDataset(file_path='./data/test_final.txt', transform=data_transforms)
- test_dataloader = DataLoader(test_dataset, batch_size=32, shuffle=False)
- # 修改为 EfficientNet-B0
- model = models.efficientnet_b7(pretrained=False)
- model.classifier[1] = nn.Linear(model.classifier[1].in_features, 4)
- model = model.to(device)
- loss_fn = nn.CrossEntropyLoss()
- # 遍历保存的模型并测试每个模型
- saved_models_dir = './saved_models/'
- if not os.path.exists(saved_models_dir):
- print("No saved models found.")
- sys.exit(1) # 非零状态码表示异常退出
- all_test_results = [] # 存储每个模型的测试结果
- for fold in range(1, 6): # 假设你有5折模型
- model_path = os.path.join(saved_models_dir, f'efficientnet_b7_{fold}_final.pth')
- if not os.path.exists(model_path):
- print(f"Model for Fold {fold} not found at {model_path}. Skipping...")
- continue
- print(f"Loading model from {model_path}...")
- model.load_state_dict(torch.load(model_path))
- model.eval()
- # 测试模型
- test_labels, test_preds, test_loss, test_accuracy = test(test_dataloader, model)
- test_auc = plot_roc_curve(test_labels, test_preds, fold)
- test_metrics = calculate_metrics(test_labels, test_preds, num_classes=4)
- # 保存测试结果
- all_test_results.append({
- 'fold': fold,
- 'accuracy': test_accuracy,
- 'auc': test_auc,
- 'loss': test_loss,
- 'metrics': test_metrics
- })
- print(f"Fold {fold} Test Results:")
- print(f" Accuracy: {test_accuracy:.4f}")
- print(f" Loss: {test_loss:.4f}")
- # 打印 AUC 信息
- print(f" AUCs:")
- for class_name, auc_value in test_auc.items():
- print(f" {class_name}: {auc_value:.4f}")
- avg_auc = np.mean(list(test_auc.values()))
- print(f" Average AUC: {avg_auc:.4f}")
- # 汇总所有折的测试结果
- if all_test_results:
- overall_test_accuracy = np.mean([r['accuracy'] for r in all_test_results])
- overall_test_auc = np.mean([np.mean(list(r['auc'].values())) for r in all_test_results])
- overall_test_loss = np.mean([r['loss'] for r in all_test_results])
- print("\nFinal Test Results:")
- print(f" Overall Accuracy: {overall_test_accuracy:.4f}")
- print(f" Overall AUC: {overall_test_auc:.4f}")
- print(f" Overall Loss: {overall_test_loss:.4f}")
- else:
- print("No valid test results were obtained.")
Process_fold_Efficient.py at commit ae26dfc, no license · at the source
Overview
- School of Biomedical Engineering, Capital Medical University, Beijing, 100069 China
- Beijing Key Laboratory of Fundamicationental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing, 100069 China
- Laboratory for Clinical Medicine, Capital Medical University, Beijing, 100069 China
Abstract
The abstract is not reproduced here: the paper's license (CC BY-NC-ND) does not allow it. Read it in the paper, at the publisher or on Europe PMC.
Repository
Its files are read in the Code ↔ Paper reader above, with 3 matches between paragraphs and lines of code.
DrZhaoys/Early-Stage-Parkinson-s-Disease-Grading
ae26dfc225d58fd3c8e67d27e8edefd085daa0d6, 17 March 2026Availability: 1 check, the latest on 29 September 2026: the link answers
- 29 September 2026: the link answers
45 files
- Final_test/
Compare_dif_model.py , Python, 144 lines - Final_test/
Data_vertif.py , Python, 50 lines - Final_test/
Pre/ , Python, 78 linesV2frame.py - Final_test/
Pre/ , Python, 17 linesb2j.py - Final_test/
Pre/ , Python, 62 linescrop_img.py - Final_test/
Pre/ , Python, 94 linesdata_augmentation.py - Final_test/
Pre/ , Python, 51 linesimg_point.py - Final_test/
Pre/ , Python, 13 linestest.py - Final_test/
Process_Fold.py , Python, 191 lines - Final_test/
Process_MobileNet.py , Python, 135 lines - Final_test/
Process_Mobile_2.py , Python, 176 lines - Final_test/
Process_Res50.py , Python, 224 lines - Final_test/
Process_ResNet.py , Python, 183 lines - Final_test/
Process_Vgg.py , Python, 177 lines - Final_test/
Process_fold_Efficient.p , Python, 353 lines, 1 matchy - Final_test/
Process_fold_efficient_v , Python, 363 lines, 1 match2.py - Final_test/
Process_fold_transformer , Python, 385 lines, 1 match.py - Final_test/
Process_fold_v2.py , Python, 207 lines - Final_test/
Process_fold_v3.py , Python, 262 lines - Final_test/
Process_fold_v4_withtest , Python, 357 lines.py - Final_test/
Process_fold_v5.py , Python, 362 lines - Final_test/
Process_fold_vfinal.py , Python, 350 lines - Final_test/
Process_fold_vfinal_CAM. , Python, 466 linespy - Final_test/
Process_fold_vmobile.py , Python, 350 lines - SR_test/
Bicubic_interpolation.py , Python, 53 lines - SR_test/
Breast-dataset.py , Python, 1 line - SR_test/
Cubic_convolution.py , Python, 67 lines - SR_test/
DownSample.py , Python, 70 lines - SR_test/
EDSR_model_test.py , Python, 258 lines - SR_test/
Generate_new_img.py , Python, 49 lines - SR_test/
PSNR_SSIM_test.py , Python, 46 lines - SR_test/
WDSR_8x.py , Python, 253 lines - SR_test/
WDSR_final2.py , Python, 257 lines - SR_test/
WDSR_final3_customA.py , Python, 375 lines - SR_test/
WDSR_final4_customA_ver2 , Python, 284 lines.py - SR_test/
WDSR_final_origin_B.py , Python, 267 lines - SR_test/
WDSR_remake_ver.py , Python, 220 lines - SR_test/
WDSR_remake_ver2_real.py , Python, 246 lines - SR_test/
WDSR_remake_ver3_real.py , Python, 254 lines - SR_test/
WDSR_remake_ver4.5.py , Python, 277 lines - SR_test/
WDSR_remake_ver4.py , Python, 238 lines - SR_test/
WDSR_remake_ver5.py , Python, 248 lines - SR_test/
WDSR_remake_ver6.py , Python, 249 lines - SR_test/
WDSRwithValidation.py , Python, 153 lines - SR_test/
data.py , Python, 5 lines
Code availability statement
The paper has a code availability statement. Its license (CC BY-NC-ND) does not allow reproducing it here; in short, from what the harvester recognized in it:
- it points to the authors' code: DrZhaoys/
Early-Stage-Parkinson-s- Disease-Grading
Read it in the paper: doi.org/10.1038/s41531-026-01348-1.
Tracing map
Proposed by the machine: these links were found in the paper and verified at the source, without human review. The map will receive a Zenodo DOI once one of the paper's authors has validated it with their ORCID.
What the map holds:
- 1 repository of the authors' code, each at its verified commit, with its license and how the link was found in the paper;
- 45 scripts, each with its path and the digest of its content;
- 3 matches between paragraphs of the paper and lines of the code (method lexical-v1);
- neither the text of the paper nor the code itself.
Its JSON (tracing-map.json) is deposited on Zenodo with its DOI once the map is validated.
Data
Datasets cited
- zenodo:19067154, at Zenodo; found in “Data availability”
Data availability statement
The paper has a data availability statement. Its license (CC BY-NC-ND) does not allow reproducing it here; in short, from what the harvester recognized in it:
- it points to a dataset: Zenodo 19067154
Read it in the paper: doi.org/10.1038/s41531-026-01348-1.
Versions
The history of this record: each version stored by the harvester or made by a correction of its authors or of the maintainers of its code, and what changed in its facts. The texts of the paper (its abstract, its availability statements) are not part of it; versions that changed only those are not listed.
Version 1, 29 September 2026: the first record
Recorded: type, language, journal, volume, issue, pages, dates, 6 authors, 5 keywords, 1 funder, 26 references.
Cite
This paper
Zhao, Y., Cui, W., Liang, S., Gu, Y., Bai, X., & Zhang, L. (2026). Pathology-Anchored Transcranial Sonography: A Cascaded Super-Resolution Deep Learning System for Early-Stage Parkinson's Disease Grading. NPJ Parkinson's disease, 12(1), 145. https://
BibTeX
@article{zhao2026patholo
author = {Zhao, Yishen and Cui, Weiguo and Liang, Shuang and Gu, Yu and Bai, Xue and Zhang, Lu},
title = {{Pathology-Anchored Transcranial Sonography: A Cascaded Super-Resolution Deep Learning System for Early-Stage Parkinson's Disease Grading}},
journal = {NPJ Parkinson's disease},
year = {2026},
month = apr,
volume = {12},
number = {1},
pages = {145},
publisher = {Nature Publishing Group},
issn = {2373-8057},
doi = {10.1038/
url = {https://
pmid = {41965365},
pmcid = {PMC13269911}
}
RIS
TY - JOUR
AU - Zhao, Yishen
AU - Cui, Weiguo
AU - Liang, Shuang
AU - Gu, Yu
AU - Bai, Xue
AU - Zhang, Lu
TI - Pathology-Anchored Transcranial Sonography: A Cascaded Super-Resolution Deep Learning System for Early-Stage Parkinson's Disease Grading
T2 - NPJ Parkinson's disease
J2 - NPJ Parkinsons Dis
PY - 2026
DA - 2026/
VL - 12
IS - 1
SP - 145
SN - 2373-8057
PB - Nature Publishing Group
DO - 10.1038/
UR - https://
LA - en
ER -
CSL-JSON
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"id": "10.1038/
"type": "article-journal",
"title": "Pathology-Anchored Transcranial Sonography: A Cascaded Super-Resolution Deep Learning System for Early-Stage Parkinson's Disease Grading",
"container-title": "NPJ Parkinson's disease",
"author": [
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"family": "Zhao",
"given": "Yishen"
},
{
"family": "Cui",
"given": "Weiguo"
},
{
"family": "Liang",
"given": "Shuang"
},
{
"family": "Gu",
"given": "Yu"
},
{
"family": "Bai",
"given": "Xue"
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"given": "Lu"
}
],
"container-title-short":
"volume": "12",
"issue": "1",
"page": "145",
"DOI": "10.1038/
"PMID": "41965365",
"PMCID": "PMC13269911",
"ISSN": "2373-8057",
"publisher": "Nature Publishing Group",
"URL": "https://
"language": "en",
"issued": {
"date-parts": [
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2026,
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11
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]
}
}
The tracing map gets a citation of its own once an author has validated it and it has a DOI.
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