Publications by authors named "Chencheng Zhang"

Surgery remains an essential treatment for managing drug-resistant focal epilepsy, but its accessibility and efficacy are limited in patients without distinct structural abnormalities on magnetic resonance imaging (MRI). Potassium ion (K), a critical marker for seizure-associated neuronal signaling, shows significant promise for designing sensors targeting hidden epileptic foci. However, existing sensors cannot cross the blood-brain barrier and lack the ability to specifically enrich and amplify K signals in the brain with high temporal and spatial resolution.

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Objective: Stylomastoid foramen (SMF) puncture with radiofrequency ablation (RFA) is a minimally invasive therapy for hemifacial spasm (HFS) with notable therapeutic outcomes. Conventionally, this procedure is performed under CT guidance. The present study highlights the authors' preliminary clinical experience with robot-assisted SMF puncture in 7 patients with HFS using a neurosurgical robot.

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Objective: Blood DNA methylation (DNAm) alterations have been widely reported in the onset and progression of mild cognitive impairment (MCI) and Alzheimer's disease (AD); however, DNAm is underutilized as a diagnostic biomarker for these diseases. We aimed to evaluate the diagnostic performance of DNAm for MCI and AD, both individually and in combination with well-established AD biosignatures.

Methods: A total of 1,891 blood samples from Alzheimer's Disease Neuroimaging Initiative (ADNI) studies were used to identify potential candidate DNAm biomarkers.

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Deep brain stimulation (DBS) can ameliorate motor symptoms in Parkinson's disease (PD), but its mechanism remains unclear. This work constructs a multi-scale brain model using the fMRI data from 27 PD patients with subthalamic DBS and 30 healthy controls. The model fits microscopic coupling parameters in the cortico-basal ganglia-thalamic neural loop to match individual connectivity, finding the "push-pull" effect of basal ganglia network.

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Transcranial direct current stimulation (tDCS) is a promising noninvasive intervention for Parkinson's disease (PD). However, studies of its motor and cognitive effect have produced mixed results. We conducted a systematic review including 38 studies and meta-analysis of 12 randomized sham-controlled trials with 263 PD patients.

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  • Remote programming for implantable pulse generators allows online adjustments for Parkinson patients post-DBS surgery, but patient attitudes and needs regarding this method remain unclear.
  • A web-based survey was conducted with 463 Parkinson patients, revealing that many faced logistical burdens with standard programming but a significant portion favored remote programming despite some challenges.
  • Results showed that 62% of those who tried remote programming preferred it, highlighting the need for clinicians to address issues such as prescription access and insurance coverage to fully benefit from this technology.*
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  • 4D cone-beam computed tomography (CBCT) is important for adaptive radiation therapy in lung cancer, but low sampling data can cause image artifacts that complicate treatment.
  • Existing deep learning methods often need large labeled datasets to work effectively, which are hard to get in real-world situations, leading to difficulties in maintaining motion and recovering details.
  • The introduced Deep Prior Image Constrained Motion Compensation (DPI-MoCo) framework addresses these issues by separating the reconstruction process into artifact suppression and detail enhancement, achieving effective results without needing paired datasets and performing well in both simulations and clinical tests.
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People with Parkinson's disease (PwPD) who undergo deep brain stimulation (DBS) surgery could benefit from remote programming (RP), which has proven to be both effective and economical. However, there is limited research on PwPD with DBS implants who have completed all programming sessions exclusively through remote means (full remote programming, FRP). This case report documents the experiences of five PwPD who underwent FRP, with four demonstrating improvements in motor symptoms, quality of life, and medication reduction.

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Unlabelled: The incidence of Parkinson's disease (PD) rises rapidly with the increase of age. With the advent of global aging, the number of patients with PD is rising along with the elderly population, especially in China. Previously, we found that Yishen chuchan decoction (YCD), prescribed based on clinical experience, has the potential of alleviating symptoms, delaying the progression, and controlling the development of PD.

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Background: Invasive deep brain stimulation (DBS) has been shown to be effective in treating patients with Parkinson's disease (PD), yet its clinical use is limited to patients at the advanced stage of the disease. Transcranial temporal interference stimulation (tTIS) may be a novel nonneurosurgical and safer alternative, yet its therapeutic potential remains unexplored.

Objective: This pilot study aims to examine the feasibility and safety of tTIS targeting the right globus pallidus internus (GPi) for motor symptoms in patients with PD.

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Background And Purpose: The aim was to demonstrate the feasibility, reliability and validity of an in-home remote levodopa challenge test (LCT), as delivered through an online platform, for patients with Parkinson's disease (PwPD).

Methods: Patients with Parkinson's disease eligible for deep brain stimulation surgery screening were enrolled. Participants sequentially received an in-home remote LCT and an in-hospital standard LCT (separated by 2.

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Our understanding of the DNA damage responses of human cells to radiation has increased remarkably over the recent years although some notable signaling events remain to be discovered. Here we provide a brief account of the key molecular events of the responses to reflect the current understanding of the key underlying mechanisms involved.

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The arising-from-chair task assessment is a key aspect of the evaluation of movement disorders in Parkinson's disease (PD). However, common scale-based clinical assessment methods are highly subjective and dependent on the neurologist's expertise. Alternate automated methods for arising-from-chair assessment can be established based on quantitative susceptibility mapping (QSM) images with multiple-instance learning.

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Objective: Radiofrequency thermocoagulation (RFTC) has emerged as an effective and safe treatment method for patients with refractory focal epilepsy, when stereo-electroencephalography (SEEG) is implanted. Although real-world research results are still limited, a considerable number of patients have shown favorable outcomes with this less invasive method. This study aims to describe the outcomes and predictive factors of SEEG-RFTC in real-world research.

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Background: Remote programming (RP) is an emerging technology that enables the adjustment of implantable pulse generators (IPGs) via the Internet for people with Parkinson's disease (PwPD) who have undergone deep brain stimulation (DBS). Previous studies have not comprehensively explored the effectiveness of RP in managing motor symptoms, often omitting assessments such as the rigidity and retropulsion tests during the follow-up. This study evaluates the comprehensive improvements in motor performance and the potential cost benefits of RP for PwPD with DBS.

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Article Synopsis
  • Freezing of gait (FoG) is a debilitating symptom of Parkinson's disease that causes sudden stops in walking, making automated assessment a challenge due to the complexity of analyzing lengthy videos.
  • The researchers propose an innovative video-based method using a causality-enhanced graph convolutional network (GCN) to classify FoG into five categories by first segmenting videos into motion stages and then extracting features from shorter clips.
  • Experimental results show the method achieves a 62.72% accuracy on five-class FoG assessments and 91.32% accuracy on independent tests, offering effective localization of FoG events and potential for broader applications in analyzing fine-grained actions.
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  • * A study of 58 patients showed that different stimulation sites within STN are linked to specific improvements: cervical dystonia improved with stimulation of the ventral oral posterior nucleus, while limb dystonia and blepharospasm improved with dorsolateral STN stimulation.
  • * Each type of dystonia has distinct neural pathways and connectivity patterns, indicating that tailored stimulation targeting is essential for achieving the best treatment outcomes.
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  • Deep brain stimulation (DBS) can help manage severe tardive dystonia (TD) symptoms, even in patients with major psychiatric disorders, who typically don't qualify for DBS.
  • A study of six TD patients who underwent bilateral anterior capsulotomy with STN-DBS showed significant improvements in dystonia, disability, depression, anxiety, and overall quality of life over 1-3 years post-treatment.
  • The research indicated a high percentage of symptom reduction and no serious side effects, suggesting this combination therapy is both effective and safe for severe TD patients.
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What we believe is a novel dual-channel whispering gallery mode (WGM) sensor for concurrently measuring bidirectional magnetic field and temperature is proposed and demonstrated. Two sensing microcavities [magnetic fluid (MF)-infiltrated capillary and polydimethylsiloxane (PDMS)-coated microbottle, respectively, referred as Channel 1 (CH1) and Channel 2 (CH2)] are integrated into a silica capillary to facilitate the dual-channel design. Resonant wavelengths corresponding to CH1 and CH2 mainly depend on the change in the magneto-induced refractive index and the change in the thermo-induced parameter (volume and refractive index) of the employed functional materials, respectively.

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Background: The efficacy of levodopa, the most crucial metric for Parkinson's disease diagnosis and treatment, is traditionally gauged through the levodopa challenge test, which lacks a predictive model. This study aims to probe the predictive power of T1-weighted MRI, the most accessible modality for levodopa response.

Methods: This retrospective study used two datasets: from the Parkinson's Progression Markers Initiative (219 records) and the external clinical dataset from Ruijin Hospital (217 records).

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  • Low-frequency transcranial ultrasound stimulation (TUS) can influence brain function with high precision and deep target reach, but the duration and dynamics of its effects are not well understood.* -
  • In a study with three monkeys, TUS was applied to specific brain areas, and resting-state fMRI scans were conducted to analyze changes in brain connectivity over time and between individuals.* -
  • The findings revealed that TUS leads to varied functional connectivity changes, with six distinct time-courses of effects identified, and emphasized the importance of tracking brain changes over time and considering individual differences in responses to TUS.*
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Objective: Patients with coexisting spastic cerebral palsy (CP) and dystonia have limited treatment options. In this study, the authors aimed to evaluate the efficacy of deep brain stimulation (DBS) targeting the superior cerebellar peduncles (SCPs) in adults with CP.

Methods: Five patients with CP and medically refractory dystonia and spasticity underwent SCP DBS.

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Objective: This study aimed to examine the structural alterations of the deep gray matter (DGM) in the basal ganglia circuitry of Parkinson's disease (PD) patients with freezing of gait (FOG) using quantitative susceptibility mapping (QSM) and neuromelanin-sensitive magnetic resonance imaging (NM-MRI).

Methods: Twenty-five (25) PD patients with FOG (PD-FOG), 22 PD patients without FOG (PD-nFOG), and 30 age- and sex-matched healthy controls (HCs) underwent 3-dimensional multi-echo gradient recalled echo and NM-MRI scanning. The mean volume and susceptibility of the DGM on QSM data and the relative contrast (NM) and volume (NM) of the substantia nigra pars compacta on NM-MRI were analyzed among groups.

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