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[Virtual MR endoscopy of the ventricles prior to neurosurgical interventional endoscopy -- evaluation of different presentation techniques].
Rofo. 2004 Aug; 176(8):1106-13.ROFO

Abstract

PURPOSE

In the past, virtual endoscopies have been performed for planning of endoscopic interventions or for diagnostic purposes in various organ systems with increasing frequency. This study evaluates the ability of virtual ventricular endoscopy to depict anatomical structures and the use for planning of real endoscopy.

MATERIALS AND METHODS

In a prospective study, 4 volunteers and 8 patients were examined with MRI. In 3 of the patients endoscopy was performed by our neurosurgeons thereafter. The calculation of the virtual endoscopy was based on 1 mm sagittal T2-weighted images. Comparison of surface rendering and volume rendering was made by means of video sequencing of individual views, and these were compared with the intraoperative endoscopic videos concerning the depictability of anatomical landmarks.

RESULTS

The reconstructions using volume rendering were more significant and easier to calculate than those based on surface rendering. Virtual endoscopy in the transparent mode allowed visualization of hazardous structures outside the ventricular system such as the basilar artery tip. Transparent 3D images of the ventricles gave a good overview on the depicted structures and enabled a better orientation during the virtual camera flight than surface rendered views.

CONCLUSION

MR-based virtual endoscopy of the ventricular system can be obtained on the basis of surface- and volume-rendered views of sagittal T2-weighted thin sections. Preoperative utilization of this method simplifies the planning of endoscopy by visualization of anatomical structures.

Authors+Show Affiliations

Charité, Universitätsmedizin Berlin, Campus Virchow-Klinikum, Klinik für Strahlenheilkunde, Berlin. lemke@charite.deNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

English Abstract
Journal Article

Language

ger

PubMed ID

15346286

Citation

Lemke, A-J, et al. "[Virtual MR Endoscopy of the Ventricles Prior to Neurosurgical Interventional Endoscopy -- Evaluation of Different Presentation Techniques]." RoFo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin, vol. 176, no. 8, 2004, pp. 1106-13.
Lemke AJ, Schurig-Urbaniak AM, Liebig T, et al. [Virtual MR endoscopy of the ventricles prior to neurosurgical interventional endoscopy -- evaluation of different presentation techniques]. Rofo. 2004;176(8):1106-13.
Lemke, A. J., Schurig-Urbaniak, A. M., Liebig, T., Niehues, S. M., Haberl, H., Lehmann, T. N., & Felix, R. (2004). [Virtual MR endoscopy of the ventricles prior to neurosurgical interventional endoscopy -- evaluation of different presentation techniques]. RoFo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin, 176(8), 1106-13.
Lemke AJ, et al. [Virtual MR Endoscopy of the Ventricles Prior to Neurosurgical Interventional Endoscopy -- Evaluation of Different Presentation Techniques]. Rofo. 2004;176(8):1106-13. PubMed PMID: 15346286.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Virtual MR endoscopy of the ventricles prior to neurosurgical interventional endoscopy -- evaluation of different presentation techniques]. AU - Lemke,A-J, AU - Schurig-Urbaniak,A M, AU - Liebig,T, AU - Niehues,S M, AU - Haberl,H, AU - Lehmann,T-N, AU - Felix,R, PY - 2004/9/4/pubmed PY - 2004/9/24/medline PY - 2004/9/4/entrez SP - 1106 EP - 13 JF - RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin JO - Rofo VL - 176 IS - 8 N2 - PURPOSE: In the past, virtual endoscopies have been performed for planning of endoscopic interventions or for diagnostic purposes in various organ systems with increasing frequency. This study evaluates the ability of virtual ventricular endoscopy to depict anatomical structures and the use for planning of real endoscopy. MATERIALS AND METHODS: In a prospective study, 4 volunteers and 8 patients were examined with MRI. In 3 of the patients endoscopy was performed by our neurosurgeons thereafter. The calculation of the virtual endoscopy was based on 1 mm sagittal T2-weighted images. Comparison of surface rendering and volume rendering was made by means of video sequencing of individual views, and these were compared with the intraoperative endoscopic videos concerning the depictability of anatomical landmarks. RESULTS: The reconstructions using volume rendering were more significant and easier to calculate than those based on surface rendering. Virtual endoscopy in the transparent mode allowed visualization of hazardous structures outside the ventricular system such as the basilar artery tip. Transparent 3D images of the ventricles gave a good overview on the depicted structures and enabled a better orientation during the virtual camera flight than surface rendered views. CONCLUSION: MR-based virtual endoscopy of the ventricular system can be obtained on the basis of surface- and volume-rendered views of sagittal T2-weighted thin sections. Preoperative utilization of this method simplifies the planning of endoscopy by visualization of anatomical structures. SN - 1438-9029 UR - https://www.unboundmedicine.com/medline/citation/15346286/[Virtual_MR_endoscopy_of_the_ventricles_prior_to_neurosurgical_interventional_endoscopy____evaluation_of_different_presentation_techniques]_ L2 - http://www.thieme-connect.com/DOI/DOI?10.1055/s-2004-813023 DB - PRIME DP - Unbound Medicine ER -