Curvilinear reconstruction of 3D magnetic resonance imaging in patients with partial epilepsy: A pilot study

Bastos, A.C.; Korah, Ipeson; Cendes, Fernando; Melanson, Denis; Tampieri, Donatella; Peters, Terry M.; Dubeau, François; Andermann, Frédérick

doi:10.1016/0730-725x(95)02019-p

Cited by 35 publications

(19 citation statements)

References 7 publications

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“…In this technique we performed thin (1-mm) serial curved slices along the hemispheric convexities, obtaining symmetrical two-dimensional (2D) and 3D images of the cortical structure at different depth levels. 10,11 Here, we describe the rationale and advantages that CMPR provides in the visual analysis of the brain. To illustrate this approach, we describe 5 patients with intractable epilepsy whose previous conventional and 3D MRI with MPR studies were considered normal.…”

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confidence: 99%

Diagnosis of subtle focal dysplastic lesions: Curvilinear reformatting from three-dimensional magnetic resonance imaging

et al. 1999

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Focal cortical dysplasia is a frequent cause of medically intractable partial epilepsy. These lesions are being increasingly identified by high quality images provided by magnetic resonance imaging (MRI), resulting in improved seizure control of surgically treated patients. Small dysplastic lesions are often missed by conventional MRI methods. The identification of subtle structural abnormalities by rectilinear slices is often limited by the complex convolutional pattern of the brain. We developed a method of curvilinear reformatting of three‐dimensional MRI data that improves the anatomical display of the gyral structure of the hemispheric convexities. It also reduces the asymmetric sampling of gray–white matter that may lead to false‐positive results. We present 5 patients in whom conventional two‐dimensional and three‐dimensional MRI with multiplanar reformatting was initially considered normal. Subsequent studies using curvilinear reformatting identified lesions in all. Four patients underwent surgery with histological diagnosis of focal cortical dysplasia. Three patients are seizure‐free and 1 had significant improvement in seizure control. These results indicate that an increase in the detection of subtle focal dysplastic lesions may be accomplished when one improves the anatomical display of the brain gyral structure by performing curvilinear reformatting. Ann Neurol 1999;46:88–94

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Diagnosis of subtle focal dysplastic lesions: Curvilinear reformatting from three-dimensional magnetic resonance imaging

et al. 1999

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“…Brain surface reconstruction modes with CMPR were first implemented to improve the anatomical display of focal cortical dysplastic lesions. 2,3 The use of this method on standard software to identify frontoparietal gyri by recognizing specific surface patterns has recently been described. 10 This reconstruction mode allows the 2D unfolding of a spherical brain surface from the coronal orientation into a flat plane.…”

Section: Alternative Methodsmentioning

confidence: 99%

Brain surface reformatted images for fast and easy localization of perirolandic lesions

Hattingen

Good²,

Weidauer³

et al. 2005

Journal of Neurosurgery

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“…In 1995, Bastos et al [7] used the curvilinear reconstruction technique to diagnose developmental lesions in patients with partial epilepsy. Negating the need for dissection, the image generated by the curvilinear reconstruction technique, depicts many details of gyral patterns, including a representation of the continuities of each gyrus, which are normally very difficult to define precisely because of many pseudoconnections and pseudointerruptions [18].…”

Section: Discussionmentioning

confidence: 99%

“…Particularly, the curvilinear reconstruction technique of MRI is quite useful to define gyral patterns of the central area of the cerebral cortex. Originally, the curvilinear reconstruction technique had been used to diagnose cortical dysplasia [7] and other cortical structural abnormalities in epilepsy patients. We adopted this technique for the analysis of the gyral patterns of the central area.…”

Section: Introductionmentioning

confidence: 99%

Topographic Analysis of the Gyral Patterns of the Central Area

Lee

Bastos

Alonso-Vanegas

et al. 1998

Stereotact Funct Neurosurg

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Great advances in imaging technology allows the surgeon to visualize the entire brain surface during surgery. However, the cerebral convolutions are extremely complex, so that it is often difficult to define the central area precisely. Using the curvilinear reconstruction technique (Gyroview) and MRI, we have analyzed the gyral anatomy of the central area in 20 normal brans and have recognized several patterns of topographic organization and have classified them into several categories. We divided the central area into anterior and posterior subregions with the central sulcus as the main landmark. More specifically, we studied how the pre- and postcentral gyri merge into the frontal and parietal lobe proper by anatomical bridges (roots). We describe three anterior and two main posterior roots which originate from the precentral and the postcentral gyrus, respectively. We found four different types of pattern for the anterior roots and as many as 10 different patterns for the posterior roots. The arterior roots are relatively constant, compared to the posterior ones. The most frequent pattern (type 1) was found in 33 hemispheres among the 40 analyzed (82.5%). Four main posterior root patterns were recognized in 32 hemispheres of the 40 analyzed (80%). Thus, although gyral variability was encountered for the posterior roots, a very constant global pattern was seen for the central area. One of the most important steps of frameless stereotactic-guided epilepsy surgery is the precise localization of the central area. Therefore, a knowledge of gyral patterns of the central area is essential not only for the resective epilepsy surgery, but also for the successful removal of a variety of lesions in the central area.

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Curvilinear reconstruction of 3D magnetic resonance imaging in patients with partial epilepsy: A pilot study

Cited by 35 publications

References 7 publications

Diagnosis of subtle focal dysplastic lesions: Curvilinear reformatting from three-dimensional magnetic resonance imaging

Diagnosis of subtle focal dysplastic lesions: Curvilinear reformatting from three-dimensional magnetic resonance imaging

Brain surface reformatted images for fast and easy localization of perirolandic lesions

Topographic Analysis of the Gyral Patterns of the Central Area

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