scholarly journals The Key role of MRI modalities in En Plaque Meningioma

Medicinus ◽  
2018 ◽  
Vol 6 (2) ◽  
Author(s):  
Novita Tirtaprawita ◽  
Wiradharma Wiradharma ◽  
Julius July
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Ct Scan ◽  
Temporal Bone ◽  
Chronic Headache ◽  
Resonance Imaging ◽  
Initial Impression ◽  
The Right ◽  
Tomography Scan

En plaque meningioma is at frontal region is difficult to be differentiated from osteoma, based on CT scan only. En plaque meningioma represents in 2-9% of all meningioma cases. Usually en plaque meningioma grows on the sphenoid wing, whereas only 1 % grows on the frontal and temporal bone. This case is female 37 year- old who presents with chronic headache and huge lump on her right forehead that she believes it slowly enlarges for the last 5 years. The Computerized Tomography scan (CT scan) shows thickening of the right fronto-temporal bone (3-4 cm) with the diameter of 12 cm and bony hard. Initial impression suggests it could be osteoma or fibrous dysplasia. After the MRI (Magnetic Resonance Imaging) with contrast, it shows a carpet like tumor underline the thickening bone, and it suggest an en plaque meningioma. For en plaque meningioma, we have to remove the abnormal duramater. We suggest that for a case with a wide thickening calvarian bone, it’s better to get the MRI of the head with contrast.

Diagnostic role of ASL-perfusion of liver in magnetic resonance imaging in assessing risk of developing portal hypertension in patients with viral hepatitis

2021 ◽  
pp. 38-43
Author(s):  
E. N. Simakina ◽  
T. G. Morozova
Keyword(s):  
Magnetic Resonance Imaging ◽  
Portal Hypertension ◽  
Magnetic Resonance ◽  
Viral Hepatitis ◽  
Prognostic Significance ◽  
Resonance Imaging ◽  
Diagnostic Role ◽  
Right Lobe ◽  
The Right

Objective. To establish the diagnostic role of ASL-perfusion of the liver in magnetic resonance imaging (MRI) in assessing the risk of portal hypertension in patients with viral hepatitis. Materials and methods. 109 patients with viral hepatitis were examined, including 69 (63.3 %) men and 40 (36.7 %) women, the average age of patients was 49.0 ± 2.3 years. All subjects (n = 109) underwent abdominal ultrasound with doppler vascular examination and clinical elastography, ASL-perfusion of the liver with MRI with an assessment of the volume of hepatic blood flow (HBF, ml/100 g/min).Results. The highest diagnostic and prognostic significance of ASL-perfusion for the liver is a targeted study of changes in the right lobe: for the right lobe, AUROC = 0.886 (95 % CI: 0.799–0.889); for the left, AUROC = 0.635 (95 % CI 0.627–0.641). The diagnostic and prognostic significance of ASLperfusion was evaluated in comparison with ultrasound with doppler vascular examination: AUROC = 0.991 (95 % CI: 0.880–0.993); AUROC = 0.801 (95 % CI: 0.776–0.804), respectively. The quantitative and qualitative characteristics of ASL – liver perfusion were evaluated.Conclusion. When performing ASL-perfusion of the liver, MRI should evaluate quantitative and qualitative criteria. Criteria for the prognosis of portal hypertension according to ASL- perfusion in MRI in patients with viral hepatitis: HBF 131–160 ml/100 g /min, red card – very high risk, HBF = 161–185 ml/100 g/min, red card – high, HBF = 40–130 ml/100 g/min, mixed card – medium; HBF = 131–160 ml/100 g/min, blue card-low risk (r = 0.883).

Kernohan's notch in chronic subdural hematoma: findings on magnetic resonance imaging

1995 ◽  
Vol 82 (4) ◽  
pp. 645-646 ◽  
Author(s):  
Youichi Itoyama ◽  
Shodo Fujioka ◽  
Yukitaka Ushio
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Subdural Hematoma ◽  
Chronic Subdural Hematoma ◽  
Resonance Imaging ◽  
Content Type ◽  
The Right ◽  
Tomography Scan ◽  
Supratentorial Mass

✓ A 69-year-old man presented with mild left-sided hemiparesis of 2 years' duration. A computerized tomography scan revealed a left-sided chronic subdural hematoma and a midline shift to the right. Magnetic resonance (MR) imaging obtained on admission to the hospital also disclosed a deformity of the right crus cerebri. After drainage and irrigation of the hematoma through a single burr hole, the left hemiparesis improved significantly. Magnetic resonance imaging performed 9 days after the operation revealed that the size of the subdural hematoma had diminished and the deformity of the crus cerebri had improved markedly. Kernohan's notch, caused by a supratentorial mass and producing ipsilateral hemiparesis or hemiplegia, is rarely demonstrated radiographically. This may be the first reported case in which Kernohan's notch in chronic subdural hematoma has been demonstrated on MR imaging.

scholarly journals Neurobiology of developmental dyslexia Part 2: A review of magnetic resonance imaging (MRI) studies of the corpus callosum

2012 ◽  
Vol 71 (2) ◽  
Author(s):  
S. O. Wajuihian
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Corpus Callosum ◽  
Developmental Dyslexia ◽  
Right Hemisphere ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
The Brain

This paper forms part two of a review of the neurobiology of developmental dyslexia (DD) and here the focus is on magnetic resonance imaging (MRI)of the corpus callosum (CC) of dyslexic and non-dyslexic subjects. The CC is a bundle of nerve fibres connecting the left and the right hemisphere of the brain. Due to the role of this structure in inter-hemispheric transfer and integration between the hemispheres, the CC is significant in the search for the neurobiological basis of DD. (S Afr Optom 2012 71(1) 39-45)

Paraganglioma of the Temporal Bone: Role of Magnetic Resonance Imaging versus Computed Tomography

2000 ◽  
Vol 11 (2) ◽  
pp. 108-122 ◽  
Author(s):  
Samir E. Noujaim ◽  
Mandar A. Pattekar ◽  
Alexander Cacciarelli ◽  
William P. Sanders ◽  
Ay-Ming Wang
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Temporal Bone ◽  
Resonance Imaging
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