J Neurol Surg B
DOI: 10.1055/s-0039-3400222
Original Article
Georg Thieme Verlag KG Stuttgart · New York

Utility of 7 Tesla MRI for Preoperative Planning of Endoscopic Endonasal Surgery for Pituitary Adenomas

John W. Rutland
1  Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States
2  Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, New York, United States
,
Bradley N. Delman
1  Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States
3  Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, New York, United States
,
Rebecca E. Feldman
1  Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States
,
Nadejda Tsankova
4  Department of Pathology, Icahn School of Medicine at Mount Sinai, New York, New York, United States
,
Hung-Mo Lin
5  Department of Population Health Science and Policy, Mount Sinai Hospital, New York, New York, United States
,
Francesco Padormo
1  Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States
6  Department of Medical Physics, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
,
Raj K. Shrivastava*
2  Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, New York, United States
,
Priti Balchandani*
1  Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States
› Author Affiliations
Funding National Institutes of Health (grant/award number: NIH R01 CA202911).
Further Information

Publication History

22 June 2019

28 September 2019

Publication Date:
21 November 2019 (online)

Abstract

Object There is increasing interest in investigating the utility of 7 Tesla (7 T) magnetic resonance imaging (MRI) for imaging of skull base tumors. The present study quantifies visualization of tumor features and adjacent skull base anatomy in a homogenous cohort of pituitary adenoma patients.

Methods Eighteen pituitary adenoma patients were scanned at 7 T in this prospective study. All patients had reference standard-of-care clinical imaging at either 3 T (7/18, 39%) or 1.5 T (11/18, 61%). Visualization of tumor features and conspicuity of arteries and cranial nerves (CNs) was rated by an expert neuroradiologist on 7 T and clinical field strength MRI. Overall image quality and severity of image artifacts were also characterized and compared.

Results Ability to visualize tumor features did not differ between 7 T and lower field MRI. Cranial nerves III, IV, and VI were better detected at 7 T compared with clinical field strength scans. Cranial nerves III, IV, and VI were also better detected at 7 T compared with only 1.5 T, and CN III was better visualized at 7 T compared with 3 T MRI. The ophthalmic arteries and posterior communicating arteries (PCOM) were better detected at 7 T compared with clinical field strength imaging. The 7 T also provided better visualization of the ophthalmic arteries compared with 1.5 T scans.

Conclusions This study demonstrates that 7 T MRI is feasible at the skull base and identifies various CNs and branches of the internal carotid artery that were better visualized at 7 T. The 7 T MRI may offer important preoperative information that can help to guide resection of pituitary adenoma and reduce operative morbidity.

* Co-last authors