1999.90

Due to rights restrictions, this image cannot be enlarged, viewed at full 1999.90, or downloaded.

They report the use of functional f MR imaging and magnetic source MS imaging for preoperative mapping of eloquent cortex in difficult cases of brain tumor resection such as those in which there are large expansive masses or in which reoperations are required and the anatomy is distorted from prior treatments. To correlate methods of preoperative and intraoperative mapping localization directly, the authors have developed techniques of importing preoperative MS and fMR imaging data into an image-guided frameless stereotactic computer workstation. The data appear as a seamless overlay on the same preoperative volumetric MR imaging dataset used for stereotactic guidance during the operation. Intraoperatively identified functional locations mapped by cortical stimulation are recorded as digitally registered points. This approach should prove useful in assessing the accuracy and reliability of various preoperative functional brain mapping techniques.

1999.90

Object: The authors performed a retrospective analysis of consecutive patients in whom instrumentation was placed to promote lumbar fusion for the treatment of degenerative instability. All procedures were performed by a single surgeon. The authors sought to determine the risk factors for next-segment degeneration after lumbar spinal fusion with rigid instrumentation. Methods: Thirty-one of fusion procedures were performed in women who were postmenopausal. A total of 18 of patients developed symptomatic next-segment degeneration at a previously asymptomatic level; 15 were postmenopausal women. Data were obtained in patients with next-segment failure based on radiographic studies, neurological assessment, demographic factors, and sequential follow-up examinations. The mean follow-up period for this group was Twenty percent of all patients with next-segment failure were cigarette smokers. Patients frequently had more than one degenerative process at the next segment. Conclusions: The risk of adjacent-segment failure is clearly higher for patients in whom lumbar fusion with rigid instrumentation is performed to treat degenerative instability. This risk appears to be especially high in postmenopausal women. Abstract Object: The authors performed a retrospective analysis of consecutive patients in whom instrumentation was placed to promote lumbar fusion for the treatment of degenerative instability.

Culture: Thailand. Methods: Thirty-one of fusion procedures were performed in women who were postmenopausal, 1999.90.

Object: Some of the earliest successful frame-based stereotactic interventions directed toward the thalamus and basal ganglia depended on identifying the anterior commissure AC and posterior commissure PC in a sagittal ventriculogram and defining the intercommissural line that connects them in the midsagittal plane. The AC-PC line became the essential landmark for the localization of neuroanatomical targets in the basal ganglia and diencephalon and for relating them to stereotactic atlases. The goal of the present article is to present the authors' technique. Methods: The technique described uses MR sequences that minimize geometric distortion and registration error, thereby maximizing accuracy in AC-PC line determinations from axially displayed MR data. The technique is based on the authors' experience with the Leksell G-frame but can be generalized to other MR imaging-based stereotactic systems.

Due to rights restrictions, this image cannot be enlarged, viewed at full screen, or downloaded. As part of the Met's Open Access policy , you can freely copy, modify and distribute this image, even for commercial purposes. This artwork is meant to be viewed from right to left. Scroll left to view more. Use your arrow keys to navigate the tabs below, and your tab key to choose an item. Period: pre-Angkor period.

1999.90

Peyton Gray Micro Reclining Sofa. After a long day at work, having a recliner sofa that allows you to truly kick back and relax is priceless. The search for the perfect reclining sectional usually starts with your specific needs. For someone who likes to binge watch TV shows, one with foot-up adjustment and an adjustable headrest may be enough. However, for the sports fanatic who sees power recliners as a must-have, features such as cooling cupholders, USB ports and massage options may be a necessity. If you have a modern home, a contemporary leather reclining sofa may be the perfect choice for you.

Ipana reklamı komik

Use your arrow keys to navigate the tabs below, and your tab key to choose an item. Object: Some of the earliest successful frame-based stereotactic interventions directed toward the thalamus and basal ganglia depended on identifying the anterior commissure AC and posterior commissure PC in a sagittal ventriculogram and defining the intercommissural line that connects them in the midsagittal plane. Publication types Comparative Study. Did You Know? The Met Collection API is where all makers, creators, researchers, and dreamers can connect to the most up-to-date data and public domain images for The Met collection. Burr Article by Paul R. Methods: Thirty-one of fusion procedures were performed in women who were postmenopausal. Sign in to annotate. The information about this object, including provenance, may not be currently accurate. Scroll left to view more. Peter Heilbrun M. We continue to research and examine historical and cultural context for objects in The Met collection. Lewine Jeffrey D. All procedures were performed by a single surgeon.

The year was now 20 years ago. The 90s ended two decades ago.

Classification: Sculpture. Intraoperatively identified functional locations mapped by cortical stimulation are recorded as digitally registered points. ArtLens App. Abstract Object: The authors performed a retrospective analysis of consecutive patients in whom instrumentation was placed to promote lumbar fusion for the treatment of degenerative instability. Article by Jeffrey D. Scroll left to view more. Open Access data and public domain images are available for unrestricted commercial and noncommercial use without permission or fee. Burr Articles by Paul R. Waves late s-early s. Location: not on view. Magn Reson Imaging —, To request more information about this object, study images, or bibliography, contact the Ingalls Library Reference Desk. Peter Heilbrun Similar articles in Google Scholar. J Neurosci —, All images and data available through Open Access can be downloaded for free.