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CT-MR image data fusion for computer assisted navigated neurosurgery of temporal bone tumors.
Eur J Radiol. 2007 May; 62(2):192-8.EJ

Abstract

PURPOSE

To demonstrate the value of multi detector computed tomography (MDCT) and magnetic resonance imaging (MRI) in the preoperative work up of temporal bone tumors and to present, especially, CT and MR image fusion for surgical planning and performance in computer assisted navigated neurosurgery of temporal bone tumors.

MATERIALS AND METHODS

Fifteen patients with temporal bone tumors underwent MDCT and MRI. MDCT was performed in high-resolution bone window level setting in axial plane. The reconstructed MDCT slice thickness was 0.8 mm. MRI was performed in axial and coronal plane with T2-weighted fast spin-echo (FSE) sequences, un-enhanced and contrast-enhanced T1-weighted spin-echo (SE) sequences, and coronal T1-weighted SE sequences with fat suppression and with 3D T1-weighted gradient-echo (GE) contrast-enhanced sequences in axial plane. The 3D T1-weighted GE sequence had a slice thickness of 1mm. Image data sets of CT and 3D T1-weighted GE sequences were merged utilizing a workstation to create CT-MR fusion images. MDCT and MR images were separately used to depict and characterize lesions. The fusion images were utilized for interventional planning and intraoperative image guidance. The intraoperative accuracy of the navigation unit was measured, defined as the deviation between the same landmark in the navigation image and the patient.

RESULTS

Tumorous lesions of bone and soft tissue were well delineated and characterized by CT and MR images. The images played a crucial role in the differentiation of benign and malignant pathologies, which consisted of 13 benign and 2 malignant tumors. The CT-MR fusion images supported the surgeon in preoperative planning and improved surgical performance. The mean intraoperative accuracy of the navigation system was 1.25 mm.

CONCLUSION

CT and MRI are essential in the preoperative work up of temporal bone tumors. CT-MR image data fusion presents an accurate tool for planning the correct surgical procedure and is a benefit for the operational results in computer assisted navigated neurosurgery of temporal bone tumors.

Authors+Show Affiliations

Department of Radiology/Osteology, Medical University Vienna, Waehringerguertel 18-20, A-1090 Vienna, Austria. stefan.nemec@meduniwien.ac.atNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17229539

Citation

Nemec, Stefan Franz, et al. "CT-MR Image Data Fusion for Computer Assisted Navigated Neurosurgery of Temporal Bone Tumors." European Journal of Radiology, vol. 62, no. 2, 2007, pp. 192-8.
Nemec SF, Donat MA, Mehrain S, et al. CT-MR image data fusion for computer assisted navigated neurosurgery of temporal bone tumors. Eur J Radiol. 2007;62(2):192-8.
Nemec, S. F., Donat, M. A., Mehrain, S., Friedrich, K., Krestan, C., Matula, C., Imhof, H., & Czerny, C. (2007). CT-MR image data fusion for computer assisted navigated neurosurgery of temporal bone tumors. European Journal of Radiology, 62(2), 192-8.
Nemec SF, et al. CT-MR Image Data Fusion for Computer Assisted Navigated Neurosurgery of Temporal Bone Tumors. Eur J Radiol. 2007;62(2):192-8. PubMed PMID: 17229539.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - CT-MR image data fusion for computer assisted navigated neurosurgery of temporal bone tumors. AU - Nemec,Stefan Franz, AU - Donat,Markus Alexander, AU - Mehrain,Sheida, AU - Friedrich,Klaus, AU - Krestan,Christian, AU - Matula,Christian, AU - Imhof,Herwig, AU - Czerny,Christian, Y1 - 2007/01/16/ PY - 2006/08/27/received PY - 2006/11/19/revised PY - 2006/11/21/accepted PY - 2007/1/19/pubmed PY - 2008/5/9/medline PY - 2007/1/19/entrez SP - 192 EP - 8 JF - European journal of radiology JO - Eur J Radiol VL - 62 IS - 2 N2 - PURPOSE: To demonstrate the value of multi detector computed tomography (MDCT) and magnetic resonance imaging (MRI) in the preoperative work up of temporal bone tumors and to present, especially, CT and MR image fusion for surgical planning and performance in computer assisted navigated neurosurgery of temporal bone tumors. MATERIALS AND METHODS: Fifteen patients with temporal bone tumors underwent MDCT and MRI. MDCT was performed in high-resolution bone window level setting in axial plane. The reconstructed MDCT slice thickness was 0.8 mm. MRI was performed in axial and coronal plane with T2-weighted fast spin-echo (FSE) sequences, un-enhanced and contrast-enhanced T1-weighted spin-echo (SE) sequences, and coronal T1-weighted SE sequences with fat suppression and with 3D T1-weighted gradient-echo (GE) contrast-enhanced sequences in axial plane. The 3D T1-weighted GE sequence had a slice thickness of 1mm. Image data sets of CT and 3D T1-weighted GE sequences were merged utilizing a workstation to create CT-MR fusion images. MDCT and MR images were separately used to depict and characterize lesions. The fusion images were utilized for interventional planning and intraoperative image guidance. The intraoperative accuracy of the navigation unit was measured, defined as the deviation between the same landmark in the navigation image and the patient. RESULTS: Tumorous lesions of bone and soft tissue were well delineated and characterized by CT and MR images. The images played a crucial role in the differentiation of benign and malignant pathologies, which consisted of 13 benign and 2 malignant tumors. The CT-MR fusion images supported the surgeon in preoperative planning and improved surgical performance. The mean intraoperative accuracy of the navigation system was 1.25 mm. CONCLUSION: CT and MRI are essential in the preoperative work up of temporal bone tumors. CT-MR image data fusion presents an accurate tool for planning the correct surgical procedure and is a benefit for the operational results in computer assisted navigated neurosurgery of temporal bone tumors. SN - 0720-048X UR - https://www.unboundmedicine.com/medline/citation/17229539/CT_MR_image_data_fusion_for_computer_assisted_navigated_neurosurgery_of_temporal_bone_tumors_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0720-048X(06)00517-1 DB - PRIME DP - Unbound Medicine ER -