MRI Segmentation using Fuzzy C-Means and Radial Basis Function Neural Networks

Rasooli, Amirhossien; Ashtiyani, Meghdad; Birgani, P. M.; Amiri, Sara; Mirmohammadi, Pouria; Deevband, Mohammad Reza

doi:10.18520/cs/v115/i6/1091-1097

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…This not only contributes to understanding the efficacy of the therapy, and underlying mechanisms of the disease, but also ensures that clinically significant enhancement of functional outcomes are persistent. Considering this, neuroimaging modalities including structural and diffusion magnetic resonance imaging (MRI) and functional MRI (fMRI) are vital for identifying neuroplasticity [1, [19][20][21][22][23][24]. FMRI detects changes in blood flow (hemodynamic response) associated with neural activation of the brain [25,26].…”

Section: Introductionmentioning

confidence: 99%

Short-Term Therapeutic Effects of Anti-Gravity Treadmill Training on Brain Functional Activities and Walking Capacity in Children With Cerebral Palsy

Ashtiyani

Birgani

Soleimani

et al. 2022

BCN

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Introduction: Cerebral Palsy (CP) is one of the most common causes of motor disability in childhood. Since CP is a corollary to brain damage, persistent treatment should accompany an alteration in brain functional activity in line with clinical improvements. Methods: Fourteen children with spastic hemiplegia CP were randomly divided into 2 groups. The study group (8yrs-5mos) underwent 45min AlterG training sessions 3 times/week for 8 weeks, while the control group (8yrs-2mos) received the same amount of occupational therapy (OT). Functional magnetic resonance imaging (fMRI) was conducted to quantify brain activation during the performance of passive tasks including ankle plantarflexion to dorsiflexion and knee flexion to extension over the range of motion. Walking capacity was assessed using the Timed-Up-and-Go, 10-meter, and 6-minute walk tests. All evaluations were performed before and after training and compared between the two groups. Results: We were able to detect the signatures of ankle and knee passive movement tasks in the fMRI and characterize them in terms of activated voxels. The pre-post activation changes following the completion of training course showed that the elicited motor cortex activation was greater for the ankle than the knee tasks. For the ankle, primary motor cortex, precentral gyrus and corpus callosum showed significant enhancement in most study participants. The results indicated 16.1% more active voxels in the study than control groups. Similarly, clinical outcome measures improved over twice as much in this group. Conclusions: AlterG training could be a potentially effective therapeutic intervention for improving gait and balance impairments in children with CP.

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Section: Introductionmentioning

confidence: 99%

Short-Term Therapeutic Effects of Anti-Gravity Treadmill Training on Brain Functional Activities and Walking Capacity in Children With Cerebral Palsy

Ashtiyani

Birgani

Soleimani

et al. 2022

BCN

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“…One possible alternative to applying the k-means algorithm is using instead the fuzzy C-means algorithm (FCM) introduced in [49], and extended in [4]. FCM has been successfully used in various applications (see, for example [1], [48]). FCM is based on the association of each cluster with a fuzzy set and with a membership function.…”

Section: Introductionmentioning

confidence: 99%

Designing RBFNs Structure Using Similarity-Based and Kernel-Based Fuzzy C-Means Clustering Algorithms

2021

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“…In addition, fMRI is a neuroimaging tool employing MRI to image small changes in blood flow occurring with brain activity. In general, fMRI helps identify active areas of the brain, which are interactive in performing a particular function [14][15][16][17].…”

mentioning

confidence: 99%

Corpus Callosum Functional Activities in Children with Cerebral Palsy

2023

J Biomed Phys Eng

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Background: Since cerebral palsy (CP) is a corollary to brain damage, persistent treatment should accompany an alteration in brain functional activity in line with clinical improvements. In this regard, the corpus callosum (CC), as a connecting bridge between the two hemispheres, plays an essential role. Objective: This study aimed to investigate the therapeutic effects of occupational therapy (OT) on CC functional activity and walking capacity in children with cerebral palsy. Material and Methods: In this clinical trial study, 4 children with CP (8.25±1.71 years) received 45 min OT sessions 3 times weekly for 8 weeks. Functional magnetic resonance imaging (fMRI) was acquired while conducting passive motor tasks to quantify CC activation. The pre-post activation changes in CC following therapy were quantified in terms of activated voxels. Walking capacity was evaluated using the timed-up-and-go (TUG), 6-minute walk test (6 MWT), and 10-meter walk test (10 MWT) in pre-and post-treatment. Results: The number of activated voxels in CC indicated significant improvement in participants. Post-treatment activated voxels substantially exceeded pre-treatment active voxels. Clinical measures, including TUG, 6 MWT, and 10 MWT are improved by 11.9%, 12.6%, and 25.4%, respectively. Conclusion: Passive task-based fMRI can detect the effects of OT on CC functional activity in children with CP. According to the results, OT improves CC functional activity in addition to gait and balance performance.

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MRI Segmentation using Fuzzy C-Means and Radial Basis Function Neural Networks

Cited by 3 publications

References 16 publications

Short-Term Therapeutic Effects of Anti-Gravity Treadmill Training on Brain Functional Activities and Walking Capacity in Children With Cerebral Palsy

Short-Term Therapeutic Effects of Anti-Gravity Treadmill Training on Brain Functional Activities and Walking Capacity in Children With Cerebral Palsy

Designing RBFNs Structure Using Similarity-Based and Kernel-Based Fuzzy C-Means Clustering Algorithms

Corpus Callosum Functional Activities in Children with Cerebral Palsy

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