Stereotactic imaging of the pallidal target.
Identifieur interne : 000769 ( Ncbi/Curation ); précédent : 000768; suivant : 000770Stereotactic imaging of the pallidal target.
Auteurs : Hidehiro Hirabayashi [Japon] ; Magnus Tengvar ; Marwan I. HarizSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2002.
English descriptors
- KwdEn :
- MESH :
- pathology : Globus Pallidus.
- surgery : Globus Pallidus, Parkinson Disease.
- therapy : Parkinson Disease.
- Adult, Aged, Electric Stimulation Therapy, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Stereotaxic Techniques.
Abstract
In 48 consecutive patients, we applied a new stereotactic imaging technique to individually visualize the pallidal target before surgery. A turbo spin-echo proton density sequence (acquisition time, 6 minutes 5 seconds) was used for 2-mm-thick contiguous axial scanning. Pallidocapsular border, medial putaminal border, and optic tract were visualized bilaterally in all patients. Boundaries of globus pallidus internus, globus pallidus externus, and lamina medullaris interna were clearly visualised in 71% of the patients. The anatomic target point was chosen in the middle of the visualized posteroventral pallidum, irrespective of the position of this point in relation to commissures. The lateralities of pallidocapsular border, lamina medullaris interna, and medial boundary of putamen were measured bilaterally in each patient, and the width of the posteroventral pallidum was assessed. The laterality of structures (measured from a point 2 mm anterior to midcommissural point and at a level 2-4 mm below anterior commissure-posterior commissure line) showed a wide range. The position of the pallidocapsular border varied by up to almost 1 cm between the most medial and the most lateral one. There were also variations in the position of the pallidal structures between left and right hemispheres in the same patients. The posteroventral pallidum was slightly more wide on the left than the right side. Given the significant inter- and intra-individual variabilities of the position of pallidal structures, it may be hazardous to rely solely on the atlas and the commissures for targeting. A magnetic resonance imaging sequence that enables visualization in each individual patient of the target area and its surroundings may contribute to less electrode passes during intraoperative physiological exploration and to more exact location of the lesion or chronic electrode in the posteroventral pallidum.
PubMed: 11948767
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pubmed:11948767Le document en format XML
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Hariz</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2002">2002</date><idno type="RBID">pubmed:11948767</idno><idno type="pmid">11948767</idno><idno type="wicri:Area/PubMed/Corpus">003A82</idno><idno type="wicri:Area/PubMed/Curation">003A82</idno><idno type="wicri:Area/PubMed/Checkpoint">003929</idno><idno type="wicri:Area/Ncbi/Merge">000769</idno><idno type="wicri:Area/Ncbi/Curation">000769</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Stereotactic imaging of the pallidal target.</title><author><name sortKey="Hirabayashi, Hidehiro" sort="Hirabayashi, Hidehiro" uniqKey="Hirabayashi H" first="Hidehiro" last="Hirabayashi">Hidehiro Hirabayashi</name><affiliation wicri:level="1"><nlm:affiliation>Department of Neurosurgery, Nara Medical University, Nara, Japan.</nlm:affiliation><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Neurosurgery, Nara Medical University, Nara</wicri:regionArea><wicri:noRegion>Nara</wicri:noRegion></affiliation></author><author><name sortKey="Tengvar, Magnus" sort="Tengvar, Magnus" uniqKey="Tengvar M" first="Magnus" last="Tengvar">Magnus Tengvar</name></author><author><name sortKey="Hariz, Marwan I" sort="Hariz, Marwan I" uniqKey="Hariz M" first="Marwan I" last="Hariz">Marwan I. Hariz</name></author></analytic><series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title><idno type="ISSN">0885-3185</idno><imprint><date when="2002" type="published">2002</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Electric Stimulation Therapy</term><term>Female</term><term>Globus Pallidus (pathology)</term><term>Globus Pallidus (surgery)</term><term>Humans</term><term>Magnetic Resonance Imaging</term><term>Male</term><term>Middle Aged</term><term>Parkinson Disease (surgery)</term><term>Parkinson Disease (therapy)</term><term>Stereotaxic Techniques</term></keywords><keywords scheme="MESH" qualifier="pathology" xml:lang="en"><term>Globus Pallidus</term></keywords><keywords scheme="MESH" qualifier="surgery" xml:lang="en"><term>Globus Pallidus</term><term>Parkinson Disease</term></keywords><keywords scheme="MESH" qualifier="therapy" xml:lang="en"><term>Parkinson Disease</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Electric Stimulation Therapy</term><term>Female</term><term>Humans</term><term>Magnetic Resonance Imaging</term><term>Male</term><term>Middle Aged</term><term>Stereotaxic Techniques</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In 48 consecutive patients, we applied a new stereotactic imaging technique to individually visualize the pallidal target before surgery. A turbo spin-echo proton density sequence (acquisition time, 6 minutes 5 seconds) was used for 2-mm-thick contiguous axial scanning. Pallidocapsular border, medial putaminal border, and optic tract were visualized bilaterally in all patients. Boundaries of globus pallidus internus, globus pallidus externus, and lamina medullaris interna were clearly visualised in 71% of the patients. The anatomic target point was chosen in the middle of the visualized posteroventral pallidum, irrespective of the position of this point in relation to commissures. The lateralities of pallidocapsular border, lamina medullaris interna, and medial boundary of putamen were measured bilaterally in each patient, and the width of the posteroventral pallidum was assessed. The laterality of structures (measured from a point 2 mm anterior to midcommissural point and at a level 2-4 mm below anterior commissure-posterior commissure line) showed a wide range. The position of the pallidocapsular border varied by up to almost 1 cm between the most medial and the most lateral one. There were also variations in the position of the pallidal structures between left and right hemispheres in the same patients. The posteroventral pallidum was slightly more wide on the left than the right side. Given the significant inter- and intra-individual variabilities of the position of pallidal structures, it may be hazardous to rely solely on the atlas and the commissures for targeting. A magnetic resonance imaging sequence that enables visualization in each individual patient of the target area and its surroundings may contribute to less electrode passes during intraoperative physiological exploration and to more exact location of the lesion or chronic electrode in the posteroventral pallidum.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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