ADAPTIVE REGION GROWING FOR SKULL, BRAIN, AND SCALP SEGMENTATION FROM 3D MRI

2019 ◽  
Vol 31 (05) ◽  
pp. 1950033
Author(s):  
Tran Anh Tuan ◽  
Jin Young Kim ◽  
Pham The Bao
Keyword(s):  
Nervous System ◽  
Automatic Segmentation ◽  
Region Growing ◽  
Ground Truth ◽  
Resonance Imaging ◽  
3D Mri ◽  
Histogram Method ◽  
Ground Truth Data ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

Many of the diseases that are related to the nervous system are serious and can lead to pain, headaches, and many other symptoms. Magnetic resonance imaging (MRI), which produces detailed medical images for the diagnosis of nervous system-related diseases, offers an advanced approach to the study of these diseases. In this paper, a method for the automatic segmentation of the skull, scalp, and brain of 3D MRI imagery is proposed to help doctors diagnose numerous injuries and diseases. For the proposed method, the 3D MRI dataset was first transformed to 2D axial slices, which were grouped based on the skull shape. Second, the histogram method was used to compute the fitting rectangle boundary around the object. Third, the segmentation of the skull was performed using the proposed adaptive region growing method, depending on the slice groups. Finally, the brain and the scalp were segmented. The proposed method was tested and validated on 20 subjects from the BrainWeb database and seven adults from the Neurodevelopmental MRI database with the use of the tissues for the ground truth data. The performance of the proposed method was evaluated using the Dice percentage and a comparison with the other methods.

scholarly journals Hemosiderosis of Central Nervous System: a case report of a rare and underdiagnosed disease

2021 ◽  
Vol 10 (11) ◽  
pp. e270101119579
Author(s):  
Cássio Marques Perlin ◽  
Lanusa Alquino Colombo ◽  
Anderson Dillmann Groto ◽  
Bruno Gleizer da Silva Rigon
Keyword(s):  
Spinal Cord ◽  
Central Nervous System ◽  
Nervous System ◽  
Superficial Siderosis ◽  
Medical Clinic ◽  
Resonance Imaging ◽  
System A ◽  
Magnetic Resonance Imaging Mri ◽  
Brain And Spinal Cord ◽  
The Brain

Superficial Siderosis (SS) of Central Nervous System is a rare disease characterized by the deposit of hemosiderin in the brain and spinal cord. Clinically, it is characterized by progressive sensorineural ataxia and deafness associated with injury of superior motor neuron. The diagnosis is made by magnetic resonance imaging (MRI) of the encephalon and spinal cord. The objective of the study is to report the case of a patient with characteristic elements of the syndrome, accompanied in a private medical clinic.

scholarly journals Beyond Oncological Hyperthermia: Physically Drivable Magnetic Nanobubbles as Novel Multipurpose Theranostic Carriers in the Central Nervous System

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2104 ◽  
Author(s):  
Eleonora Ficiarà ◽  
Shoeb Anwar Ansari ◽  
Monica Argenziano ◽  
Luigi Cangemi ◽  
Chiara Monge ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Brain Tumors ◽  
Ad Hoc ◽  
Superparamagnetic Iron Oxide ◽  
Conventional Radiotherapy ◽  
The Central Nervous System ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

Magnetic Oxygen-Loaded Nanobubbles (MOLNBs), manufactured by adding Superparamagnetic Iron Oxide Nanoparticles (SPIONs) on the surface of polymeric nanobubbles, are investigated as theranostic carriers for delivering oxygen and chemotherapy to brain tumors. Physicochemical and cyto-toxicological properties and in vitro internalization by human brain microvascular endothelial cells as well as the motion of MOLNBs in a static magnetic field were investigated. MOLNBs are safe oxygen-loaded vectors able to overcome the brain membranes and drivable through the Central Nervous System (CNS) to deliver their cargoes to specific sites of interest. In addition, MOLNBs are monitorable either via Magnetic Resonance Imaging (MRI) or Ultrasound (US) sonography. MOLNBs can find application in targeting brain tumors since they can enhance conventional radiotherapy and deliver chemotherapy being driven by ad hoc tailored magnetic fields under MRI and/or US monitoring.

scholarly journals Cinematic rendering of a burst sagittal suture caused by an occipito-frontal gunshot wound

2021 ◽  
Author(s):  
Dominic Gascho ◽  
Michael J. Thali ◽  
Rosa M. Martinez ◽  
Stephan A. Bolliger
Keyword(s):  
Gunshot Wound ◽  
Three Dimensional ◽  
The Novel ◽  
Sagittal Suture ◽  
Resonance Imaging ◽  
Cinematic Rendering ◽  
Reconstruction Methods ◽  
Dimensional Reconstruction ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

AbstractThe computed tomography (CT) scan of a 19-year-old man who died from an occipito-frontal gunshot wound presented an impressive radiating fracture line where the entire sagittal suture burst due to the high intracranial pressure that arose from a near-contact shot from a 9 mm bullet fired from a Glock 17 pistol. Photorealistic depictions of the radiating fracture lines along the cranial bones were created using three-dimensional reconstruction methods, such as the novel cinematic rendering technique that simulates the propagation and interaction of light when it passes through volumetric data. Since the brain had collapsed, depiction of soft tissue was insufficient on CT images. An additional magnetic resonance imaging (MRI) examination was performed, which enabled the diagnostic assessment of cerebral injuries.

scholarly journals Diagnosing RCVS Without the CV

2015 ◽  
Vol 6 (3) ◽  
pp. NP1-NP4 ◽  
Author(s):  
Nuri Jacoby ◽  
Ulrike Kaunzner ◽  
Marc Dinkin ◽  
Joseph Safdieh
Keyword(s):  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Multiple Risk Factors ◽  
Mri Brain ◽  
Cerebral Vasoconstriction ◽  
History Of ◽  
Magnetic Resonance Imaging Mri ◽  
Reversible Encephalopathy ◽  
Occipital Lobes ◽  
The Brain

This is a case of a 52-year-old man with a past medical history of 2 episodes of coital thunderclap headaches as well as recent cocaine, marijuana, and pseudoephedrine use, who presented with sudden, sharp, posterior headache associated with photophobia and phonophobia. His initial magnetic resonance imaging (MRI) of the brain, magnetic resonance angiography (MRA) of the head, and magnetic resonance venography (MRV) of the head were all normal as well as a normal lumbar puncture. Given the multiple risk factors for reversible cerebral vasoconstriction syndrome (RCVS), the patient was treated for suspected RCVS, despite the normal imaging. Repeat MRI brain 3 days after hospital admission demonstrated confluent white matter T2 hyperintensities most prominent in the occipital lobes, typical of posterior reversible encephalopathy syndrome (PRES). Repeat MRA of the head 1 day after discharge and 4 days after the abnormal MRI brain showed multisegment narrowing of multiple arteries. This case demonstrates that RCVS may present with PRES on MRI brain and also exemplifies the need to treat suspected RCVS even if imaging is normal, as abnormalities in both the MRI and the MRA may be delayed.

scholarly journals 876 Disorders of the Brain Revealed by Magnetic Resonance Imaging (MRI) in Infants with Severe Congenital Cytomegaly

2010 ◽  
Vol 68 ◽  
pp. 440-440
Author(s):  
B Milewska-Bobula ◽  
B Lipka ◽  
J Zebrowska ◽  
E Jurkiewicz ◽  
I Pakula-Kosciesza ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

scholarly journals A Large-scale Comparison of Cortical and Subcortical Structural Segmentation Methods in Alzheimer’s Disease: a Statistical Approach

2020 ◽  
Author(s):  
Jafar Zamani ◽  
Ali Sadr ◽  
Amir-Homayoun Javadi
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Large Scale ◽  
Automated Segmentation ◽  
Resonance Imaging ◽  
Brain Areas ◽  
Segmentation Methods ◽  
Magnetic Resonance Imaging Mri ◽  
Underlying Mechanisms ◽  
The Brain

AbstractBackgroundAlzheimer’s disease (AD) is a neurodegenerative disease that leads to anatomical atrophy, as evidenced by magnetic resonance imaging (MRI). Automated segmentation methods are developed to help with the segmentation of different brain areas. However, their reliability has yet to be fully investigated. To have a more comprehensive understanding of the distribution of changes in AD, as well as investigating the reliability of different segmentation methods, in this study we compared volumes of cortical and subcortical brain segments, using automated segmentation methods in more than 60 areas between AD and healthy controls (HC).MethodsA total of 44 MRI images (22 AD and 22 HC, 50% females) were taken from the minimal interval resonance imaging in Alzheimer’s disease (MIRIAD) dataset. HIPS, volBrain, CAT and BrainSuite segmentation methods were used for the subfields of hippocampus, and the rest of the brain.ResultsWhile HIPS, volBrain and CAT showed strong conformity with the past literature, BrainSuite misclassified several brain areas. Additionally, the volume of the brain areas that successfully discriminated between AD and HC showed a correlation with mini mental state examination (MMSE) scores. The two methods of volBrain and CAT showed a very strong correlation. These two methods, however, did not correlate with BrainSuite.ConclusionOur results showed that automated segmentation methods HIPS, volBrain and CAT can be used in the classification of AD and HC. This is an indication that such methods can be used to inform researchers and clinicians of underlying mechanisms and progression of AD.

Neurological manifestations of tuberous sclerosis in children (own observations)

2021 ◽  
Vol 1 (223) ◽  
pp. 15-21
Author(s):  
Aigerim Balykbayeva ◽  
◽  
Dina Bakrayeva ◽  
Gaukhar Ospanova ◽  
Yekaterina Talipova ◽  
...  
Keyword(s):  
Tuberous Sclerosis ◽  
Ultrasound Examination ◽  
Resonance Imaging ◽  
Laboratory Examination ◽  
Internal Organs ◽  
Cortical Dysgenesis ◽  
Symptomatic Epilepsy ◽  
Magnetic Resonance Imaging Mri ◽  
The University ◽  
The Brain

Tuberous sclerosis (Pringle-Burneville disease) is a polysystemic genetic disease and occurs in the population with a frequency of 1:50000. Objective of the study. To study neuropsychic status and dynamics of tuberous sclerosis development in children. Material and Methods. Have been examined 33 children aged from 1 to 14 years, who were observed in the neurological pediatric department of the University Clinic ("Aksay") of Asfendiyarov KazNMU. All children had apigmented spots and coffee-milk stains on the torso and extremities, not protruding above the skin level. All children showed characteristic neuroimaging changes in the brain by magnetic resonance imaging (MRI) and computed tomography (CT) - areas of dyshinesia cortically and subcortically, i.e. tubercles. As well as changes in internal organs (hamartoma variants). All children underwent a complete laboratory examination (general blood count, standard biochemical parameters), electroencephalography of the brain (EEG), as well as ultrasound examination of internal organs. Results and conclusions. As a result of our study, it was revealed that the main symptom confirming the diagnosis of tuberous sclerosis is the presence of tubers (95-100% of patients). Moreover, there is a topographical relationship between tubers detected during MRI examination and the presence of foci on the EEG. Thus, a particular manifestation of the disease in patients is symptomatic epilepsy with onset in the first months of life (96% of patients). Keywords: tuberous sclerosis, epilepsy, children, hamartomas, pigmented spots, cortical dysgenesis, tubers.

Onset of progressive motor impairment in patients with critical central nervous system demyelinating lesions

2020 ◽  
pp. 135245852094098
Author(s):  
Roman M Kassa ◽  
Elia Sechi ◽  
Eoin P Flanagan ◽  
Timothy J Kaufmann ◽  
Orhun H Kantarci ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Brain Mri ◽  
Age At Onset ◽  
Motor Impairment ◽  
Resonance Imaging ◽  
Total Brain ◽  
Demyelinating Lesions ◽  
Magnetic Resonance Imaging Mri ◽  
Brain And Spinal Cord

Objective: To compare progressive motor impairment onset attributable to a “critical” central nervous system (CNS) demyelinating lesion in patients with highly restricted versus unlimited magnetic resonance imaging (MRI) lesion burden. Methods: We identified 135 patients with progressive motor impairment for ⩾1 year attributable to a “critical” demyelinating lesion with: MRI burden of 1 lesion (“progressive solitary sclerosis”), 2–5 lesions (“progressive paucisclerosis”), or unrestricted (>5) lesions and “progressive unilateral hemiparesis.” Neuroradiology review of brain and spinal cord MRI documented unequivocally demyelinating lesions. Results: A total of 33 (24.4%) patients had progressive solitary sclerosis; 56 (41.5%) patients had progressive paucisclerosis; and 46 (34.1%) patients had progressive unilateral hemiparesis. Median age at onset of progressive motor impairment was younger in progressive solitary sclerosis (49 years; range 24–73) and progressive paucisclerosis (50 years; range 30–64) than in progressive unilateral hemiparesis (54 years; range 39–77; p = 0.02 and p = 0.003, respectively). Within progressive unilateral hemiparesis, motor-progression onset was similar between those with 4–10, 11–20, or >20 brain lesions (55, 54, 53 years of age, respectively; p = 0.44). Conclusion: Motor-progression age is similar, but paradoxically earlier, in cohorts with highly restricted CNS lesion burden than in those with unrestricted lesion burden with progressive unilateral hemiparetic MS. The “critical” demyelinating lesion rather than total brain MRI lesion burden is the major contributor to motor-progression onset in these cohorts.

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