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Partial epilepsy: A pictorial review of 3 TESLA magnetic resonance imaging features.

Abud LG, Thivard L, Abud TG, Nakiri GS, Dos Santos AC, Dormont D - Clinics (Sao Paulo) (2015)

Bottom Line: Several studies have shown that 3 Tesla (T) MRI provides a better image quality than 1.5 T MRI regarding the detection and characterization of structural lesions, indicating that high-field-strength imaging should be considered for patients with intractable epilepsy who might benefit from surgery.Likewise, advanced MRI postprocessing and quantitative analysis techniques such as thickness and volume measurements of cortical gray matter have emerged and in the near future, these techniques will routinely enable more precise evaluations of such patients.We present a pictorial review of the major pathologies related to partial epilepsy, highlighting the key findings of 3 T MRI.

View Article: PubMed Central - PubMed

Affiliation: Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, BR.

ABSTRACT
Epilepsy is a disease with serious consequences for patients and society. In many cases seizures are sufficiently disabling to justify surgical evaluation. In this context, Magnetic Resonance Imaging (MRI) is one of the most valuable tools for the preoperative localization of epileptogenic foci. Because these lesions show a large variety of presentations (including subtle imaging characteristics), their analysis requires careful and systematic interpretation of MRI data. Several studies have shown that 3 Tesla (T) MRI provides a better image quality than 1.5 T MRI regarding the detection and characterization of structural lesions, indicating that high-field-strength imaging should be considered for patients with intractable epilepsy who might benefit from surgery. Likewise, advanced MRI postprocessing and quantitative analysis techniques such as thickness and volume measurements of cortical gray matter have emerged and in the near future, these techniques will routinely enable more precise evaluations of such patients. Finally, the familiarity with radiologic findings of the potential epileptogenic substrates in association with combined use of higher field strengths (3 T, 7 T, and greater) and new quantitative analytical post-processing techniques will lead to improvements regarding the clinical imaging of these patients. We present a pictorial review of the major pathologies related to partial epilepsy, highlighting the key findings of 3 T MRI.

No MeSH data available.


Related in: MedlinePlus

Bilateral hippocampal sclerosis and “dual pathology” in a 34-year-old woman. A) Coronal FLAIR image showing bilateral hippocampal atrophy and hyperintensity as well as a hyperintense lesion in the right superior temporal gyrus. B) Coronal T1-weighted image after a contrast administration revealed a nodular mass enhancement situated at the gray-matter-white-matter junction (white arrows); this mass might correspond to a developmental neoplasm. This lesion appeared stable on consecutive MRI scans.
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f2-cln_70p654: Bilateral hippocampal sclerosis and “dual pathology” in a 34-year-old woman. A) Coronal FLAIR image showing bilateral hippocampal atrophy and hyperintensity as well as a hyperintense lesion in the right superior temporal gyrus. B) Coronal T1-weighted image after a contrast administration revealed a nodular mass enhancement situated at the gray-matter-white-matter junction (white arrows); this mass might correspond to a developmental neoplasm. This lesion appeared stable on consecutive MRI scans.

Mentions: Bilateral hippocampal sclerosis occurs in approximately 10 to 20% of cases and can be difficult to identify using MRI. In these cases, quantitative methods and the identification of the complete loss of digitations in the hippocampal head are useful for diagnosis (Figure 2A).


Partial epilepsy: A pictorial review of 3 TESLA magnetic resonance imaging features.

Abud LG, Thivard L, Abud TG, Nakiri GS, Dos Santos AC, Dormont D - Clinics (Sao Paulo) (2015)

Bilateral hippocampal sclerosis and “dual pathology” in a 34-year-old woman. A) Coronal FLAIR image showing bilateral hippocampal atrophy and hyperintensity as well as a hyperintense lesion in the right superior temporal gyrus. B) Coronal T1-weighted image after a contrast administration revealed a nodular mass enhancement situated at the gray-matter-white-matter junction (white arrows); this mass might correspond to a developmental neoplasm. This lesion appeared stable on consecutive MRI scans.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4557590&req=5

f2-cln_70p654: Bilateral hippocampal sclerosis and “dual pathology” in a 34-year-old woman. A) Coronal FLAIR image showing bilateral hippocampal atrophy and hyperintensity as well as a hyperintense lesion in the right superior temporal gyrus. B) Coronal T1-weighted image after a contrast administration revealed a nodular mass enhancement situated at the gray-matter-white-matter junction (white arrows); this mass might correspond to a developmental neoplasm. This lesion appeared stable on consecutive MRI scans.
Mentions: Bilateral hippocampal sclerosis occurs in approximately 10 to 20% of cases and can be difficult to identify using MRI. In these cases, quantitative methods and the identification of the complete loss of digitations in the hippocampal head are useful for diagnosis (Figure 2A).

Bottom Line: Several studies have shown that 3 Tesla (T) MRI provides a better image quality than 1.5 T MRI regarding the detection and characterization of structural lesions, indicating that high-field-strength imaging should be considered for patients with intractable epilepsy who might benefit from surgery.Likewise, advanced MRI postprocessing and quantitative analysis techniques such as thickness and volume measurements of cortical gray matter have emerged and in the near future, these techniques will routinely enable more precise evaluations of such patients.We present a pictorial review of the major pathologies related to partial epilepsy, highlighting the key findings of 3 T MRI.

View Article: PubMed Central - PubMed

Affiliation: Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, BR.

ABSTRACT
Epilepsy is a disease with serious consequences for patients and society. In many cases seizures are sufficiently disabling to justify surgical evaluation. In this context, Magnetic Resonance Imaging (MRI) is one of the most valuable tools for the preoperative localization of epileptogenic foci. Because these lesions show a large variety of presentations (including subtle imaging characteristics), their analysis requires careful and systematic interpretation of MRI data. Several studies have shown that 3 Tesla (T) MRI provides a better image quality than 1.5 T MRI regarding the detection and characterization of structural lesions, indicating that high-field-strength imaging should be considered for patients with intractable epilepsy who might benefit from surgery. Likewise, advanced MRI postprocessing and quantitative analysis techniques such as thickness and volume measurements of cortical gray matter have emerged and in the near future, these techniques will routinely enable more precise evaluations of such patients. Finally, the familiarity with radiologic findings of the potential epileptogenic substrates in association with combined use of higher field strengths (3 T, 7 T, and greater) and new quantitative analytical post-processing techniques will lead to improvements regarding the clinical imaging of these patients. We present a pictorial review of the major pathologies related to partial epilepsy, highlighting the key findings of 3 T MRI.

No MeSH data available.


Related in: MedlinePlus