Multi-spatial-attention U-Net: a novel framework for automated gallbladder segmentation on CT images.

Objective: This study aimed to construct a novel model, Multi-Spatial Attention U-Net (MSAU-Net) by incorporating our proposed Multi-Spatial Attention (MSA) block into the U-Net for the automated segmentation of the gallbladder on CT images.

Methods: The gallbladder dataset consists of CT images of retrospectively-collected 152 liver cancer patients and corresponding ground truth delineated by experienced physicians. Our proposed MSAU-Net model was transformed into two versions V1(with one Multi-Scale Feature Extraction and Fusion (MSFEF) module in each MSA block) and V2 (with two parallel MSEFE modules in each MSA blcok).

Feasibility analysis of CT-guided thermal ablation of multiple pulmonary nodules combined with intraoperative biopsy.

Purpose: To analyze the safety and feasibility of computed tomography (CT)-guided thermal ablation of multiple pulmonary nodules combined with intraoperative biopsy.

Methods: The data of 431 patients with 540 lung nodules undergoing CT-guided biopsy or ablation were retrospectively analyzed. Biopsy-only group (A): 107 patients (107 lesions) received CT-guided percutaneous lung biopsy only; Ablation-only group (B): 117 cases (117 lesions) only received CT-guided thermal ablation; Single focal ablation combined with biopsy group (C): 103 patients (103 lesions) received CT-guided thermal ablation combined with intraoperative immediate biopsy; Multifocal ablation combined with biopsy group (D): 104 patients (213 lesions) received CT-guided thermal ablation combined with intraoperative biopsy.

Chemotherapy combined with intermittent microwave ablation in the treatment of oligometastatic non-small cell lung cancer.

Purpose: To observe the role of chemotherapy combined with microwave ablation in the treatment of oligometastatic non-small cell lung cancer (NSCLC).

Methods: 68 oligometastatic NSCLC patients were enrolled in this comparative study and randomly received chemotherapy with intermittent CT guided microwave ablation or chemotherapy only. The efficacy and the adverse effects were evaluated at 1, 3, and 6 months after treatment.

Feasibility analysis and efficacy evaluation of computed tomography-guided microwave ablation combined with radioactive I particles in the treatment of lung nodules.

Introduction: Lung cancer is one of the leading causes of mortality worldwide and it requires early detection and treatment. Microwave ablation (MWA), a minimally invasive technique, is effective in early stages of lung cancer, but may cause complications when applied near sensitive structures. Such cases require the use of I seed implantation.