Publications by authors named "Zhichao Gan"

Background: Intracerebral hemorrhage (ICH) is a common stroke type with high morbidity and mortality. There are mainly three surgical methods for treating ICH. Unfortunately, thus far, no specific surgical method has been proven to be the most effective.

View Article and Find Full Text PDF
Article Synopsis
  • Mixed reality navigation (MRN) technology is becoming an important tool in neurosurgery, allowing surgeons to visualize the brain using a mix of virtual and physical elements for better guidance during procedures.
  • MRN is seen as a cost-effective and user-friendly alternative to traditional neuronavigation methods, but faces challenges like patient recruitment and the availability of affordable, medically relevant head models for research.
  • To help advance the development of MRN systems, a new dataset has been created that includes imaging data and 3D models from 19 patients with brain lesions, which can be used for testing and improving MRN applications in surgery.
View Article and Find Full Text PDF

Addressing conventional neurosurgical navigation systems' high costs and complexity, this study explores the feasibility and accuracy of a simplified, cost-effective mixed reality navigation (MRN) system based on a laser crosshair simulator (LCS). A new automatic registration method was developed, featuring coplanar laser emitters and a recognizable target pattern. The workflow was integrated into Microsoft's HoloLens-2 for practical application.

View Article and Find Full Text PDF

Objective: Mixed-reality simulation is an emerging tool for creating anatomical models for preoperative planning. Its use in neurosurgical training (NT) has been limited because of the difficulty in real-time interactive teaching. This study describes the development of a patient-specific, interactive mixed-reality NT system.

View Article and Find Full Text PDF
Article Synopsis
  • - The study focuses on improving Mixed Reality Navigation (MRN) for neurosurgery by introducing a new registration method using a laser crosshair simulator, which helps replicate scanner positions on patients.
  • - It employs a Universal Windows Platform (UWP) application on HoloLens-2 to autonomously calculate coordinate transformations without requiring user input during the registration process.
  • - The approach achieved an average target registration error of 3.7 ± 1.7 mm, suggesting enhanced accuracy and efficiency, making it a promising tool for improving surgical outcomes in a cost-effective manner.
View Article and Find Full Text PDF

Parkinson's disease (PD) is a challenge because of the ageing of the population and the disease's complicated pathogenesis. Accumulating evidence showed that iron and autophagy were involved in PD. Nevertheless, the molecular mechanism and role of iron and autophagy in PD are not yet elucidated.

View Article and Find Full Text PDF

Objectives: Infantile spasm (IS) is an epileptic encephalopathy with ongoing neurological damage due to seizures and epileptiform abnormalities. Epilepsy surgery is considered for children refractory to drug therapy, especially when there is a focal brain lesion. In this study, we investigated the feasibility and efficacy of intraventricular stereotactic electroencephalography (SEEG) and laser ablation for the treatment of IS children with focal brain lesions.

View Article and Find Full Text PDF

Objective: To increase access to health interventions and healthcare services for patients in resource-constrained settings, strategies such as telemedicine must be implemented for the allocation of medical resources across geographic boundaries. Telecollaboration is the dominant form of surgical telemedicine. In this study, the authors report and evaluate a novel mobile internet-based mixed-reality interactive telecollaboration (MIMIT) system as a new paradigm for telemedicine and validate its clinical feasibility.

View Article and Find Full Text PDF

Objective: Endoscopic port surgery is a promising alternative for the surgical treatment of intracerebral hypertensive basal ganglia hemorrhage (HBGH). The precise location of hematoma is a crucial step for surgery. The authors developed a simple, low-cost navigation method using an Android smartphone for the localization of HBGH.

View Article and Find Full Text PDF

Objective: A clear, stable, suitably located vision field is essential for port surgery. A scope is usually held by hand or a fixing device. The former yields fatigue and requires lengthy training, while the latter increases inconvenience because of needing to adjust the scope.

View Article and Find Full Text PDF

Objective: The authors aimed to evaluate the technical feasibility of a mixed-reality neuronavigation (MRN) system with a wearable head-mounted device (HMD) and to determine its clinical application and accuracy.

Methods: A semiautomatic registration MRN system on HoloLens smart glasses was developed and tested for accuracy and feasibility. Thirty-seven patients with intracranial lesions were prospectively identified.

View Article and Find Full Text PDF

Background: Glioma is the most common type of brain tumor because of the destructiveness of the disease itself and the side effects of treatment, patients often leave symptoms of neurological defects. At present, rehabilitation treatment is not popular in glioma patients. There is a lack of definite evidence to prove the benefits of rehabilitation therapy for glioma patients.

View Article and Find Full Text PDF

Objective: The purpose of this study is to understand the distribution of syndrome types, the data of four diagnostic information variables, and the correlative degree and diagnostic value of four diagnosis indexes and syndromes in patients with the recovery period of ischemic stroke through clinical case data.

Methods: This study developed a unified clinical case collection table, following the clinical research design, measurement, and evaluation methods, using Chi-Square test, logistic regression analysis, and diagnostic test evaluation methods for data screening, analysis, and testing.

Results: According to the comprehensive comparison, analysis, and evaluation, the study concluded that the specificity, sensitivity, positive likelihood ratio, positive predictive value, negative predictive value, accuracy, and Youden index of "thick fur, slippery pulse" was the highest.

View Article and Find Full Text PDF

Background: The non-invasive identification of epidermal growth factor receptor (EGFR) mutations is important for the institution of individualized therapy of non-small cell lung cancer (NSCLC). In this study, the feasibility of screening for EGFR exon 19 E746_A750del mutations in circulating DNA from plasma was assessed.

Methods: Mutant-specific primers with a Taqman probe (MST-PCR) were designed.

View Article and Find Full Text PDF