Application of morphological connected openings and levelings on magnetic resonance images of the brain

2011 ◽  
Vol 21 (4) ◽  
pp. 336-348 ◽  
Author(s):  
Jorge D. Mendiola-Santibañez ◽  
Iván R. Terol-Villalobos ◽  
Angélica R. Jiménez-Sánchez ◽  
Martín Gallegos-Duarte ◽  
Juvenal Rodriguez-Resendiz ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Images ◽  
The Brain

A comparison of neural network and fuzzy clustering techniques in segmenting magnetic resonance images of the brain

1992 ◽  
Vol 3 (5) ◽  
pp. 672-682 ◽  
Author(s):  
L.O. Hall ◽  
A.M. Bensaid ◽  
L.P. Clarke ◽  
R.P. Velthuizen ◽  
M.S. Silbiger ◽  
...  
Keyword(s):  
Neural Network ◽  
Magnetic Resonance ◽  
Fuzzy Clustering ◽  
Magnetic Resonance Images ◽  
Clustering Techniques ◽  
The Brain

Validation of Partial Tissue Segmentation of Single-Channel Magnetic Resonance Images of the Brain

NeuroImage ◽  
2000 ◽  
Vol 12 (6) ◽  
pp. 640-656 ◽  
Author(s):  
T.J. Grabowski ◽  
R.J. Frank ◽  
N.R. Szumski ◽  
C.K. Brown ◽  
H. Damasio
Keyword(s):  
Magnetic Resonance ◽  
Single Channel ◽  
Magnetic Resonance Images ◽  
Tissue Segmentation ◽  
The Brain

Three-dimensional magnetic resonance images of the brain: application to neurosurgical planning

1990 ◽  
Vol 72 (3) ◽  
pp. 433-440 ◽  
Author(s):  
Xiaoping Hu ◽  
Kim K. Tan ◽  
David N. Levin ◽  
Simranjit Galhotra ◽  
John F. Mullan ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Three Dimensional ◽  
Preoperative Assessment ◽  
Magnetic Resonance Images ◽  
Interactive Software ◽  
Cross Sectional ◽  
Content Type ◽  
Brain Surface ◽  
Neurosurgical Planning ◽  
The Brain

✓ Data from single 10-minute magnetic resonance scans were used to create three-dimensional (3-D) views of the surfaces of the brain and skin of 12 patients. In each case, these views were used to make a preoperative assessment of the relationship of lesions to brain surface structures associated with movement, sensation, hearing, and speech. Interactive software was written so that the user could “slice” through the 3-D computer model and inspect cross-sectional images at any level. A surgery simulation program was written so that surgeons were able to “rehearse” craniotomies on 3-D computer models before performing the actual operations. In each case, the qualitative accuracy of the 3-D views was confirmed by intraoperative inspection of the brain surface and by intraoperative electrophysiological mapping, when available.

scholarly journals Review of prodromal symptoms in Parkinson's Disease detected by MRI, EEG And microbiome

2019 ◽  
Author(s):  
Isabel Cristina Echeverri ◽  
Maria de la Iglesia Vayá ◽  
Jose Molina Mateo ◽  
Francia Restrepo de Mejia ◽  
Belarmino Segura Giraldo
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Magnetic Resonance ◽  
Substantia Nigra ◽  
Evidence Synthesis ◽  
Magnetic Resonance Images ◽  
Event Related Potential ◽  
Motor Symptoms ◽  
The Brain ◽  
Early Parkinson’S Disease

Context: Parkinson’s disease (PD) is catalogued as a disorder that causes motor symptoms; the evidence of literature shows the PD starts with non-motor signs, which can be detected in prodromal phases. These previous phases can be analyzed and studied through magnetic resonance images (MRI), electroencephalography (EEG) and microbiome.Objective: To systematically review the areas of the brain and brain-gut axis which affect in early Parkinson’s disease that can possibly be visualized and analyzed by MRI, EEG and the microbiome.Evidence acquisition: Pubmed and Embase databases were used until July 30, 2018 as to search for early Parkinson’s disease at its earliest non-motor symptoms stage by using MRI, EEG, and microbiome. The search was performed according to the requirements of a systematic review. In order to identify reports, we evaluated them following the Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) criteria. Evidence synthesis: MRI and EEG have provided the advances to find features for PD over the last decade. Those techniques identify motor symptoms on substantia nigra where the patient shows a dopamine deficiency. However, over recent years, researchers have found that PD has prodromal phases, that is, PD is not simply a neurodegenerative disorder characterized by the dysfunction of dopaminergic. Thus, high field MRI, event-related potential (ERP) and microbiota data shows a significant change on the brain cortex, white and grey matter, the extrapyramidal system, brain signals and the gut.Conclusion: The structural MRI is a useful technique in detecting the stages of motor symptoms on the substantia nigra in patients with PD. The use of magnetic resonance as an early detector requires a high magnetic field, as to identify the areas which diagnose that the patient could be in the premotor stages. On the other hand, EEG performed well in detecting PD features. Furthermore, microbiome sequencing might include the classification of bacterial families that could help to detect PD in its prodromal phase. Thus, the combination of all these techniques can support the possibility of diagnosing PD in its very early stages.

Localization of Intracranial Lesions Using Superficial Stereotaxic Cranial Lesion Locator Based on Magnetic Resonance Images

2018 ◽  
Vol 26 (1) ◽  
pp. 82-85
Author(s):  
Ahmet Gökyar ◽  
Cengiz Cokluk
Keyword(s):  
Experimental Study ◽  
Magnetic Resonance ◽  
Simple Procedure ◽  
Brain Parenchyma ◽  
Magnetic Resonance Images ◽  
Lesion Detection ◽  
High Rate ◽  
Navigation Systems ◽  
Lesion Location ◽  
The Brain

Background. Detection of a deep-seated lesion located in the brain parenchyma and major neuroanatomical sites is a critical issue in neurosurgery. Some neurosurgical cranial navigation systems have been developed that are available; however, some preparation is necessary, including the installation of complex computer software programs and obtaining specific neuroradiological images. Objective. The purpose of this experimental study was to design and evaluate a superficial stereotaxic frameless lesion locator in order to localize mass lesions within the brain. Methods. A superficial stereotaxic frameless lesion locator system was designed using cardboard and the Cartesian coordinate system as a reference framework. This material was used in a model creating printed magnetic resonance images in the superficially marking of the lesion. This material easily located the lesion placement and superficially projected the lesion location. Results. The results of this study revealed that the superficial stereotaxic frameless lesion location procedure using a coordinate cardboard locator is a safe, fast, and simple procedure. This procedure provides an accurate means of locating the target lesion seated within the brain parenchyma. When compared with other models, we found that this device is reliable and has a high rate of superficial lesion detection. Conclusion. A superficial lesion locator may be used in clinical practice. This experimental study demonstrated the usability and reliability of the procedure. Additional detailed investigations are necessary to improve the procedure.

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