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Efficacy of 3D evaluation of unruptured paraclinoid aneurysms within Leksell GammaPlan® for determination of their intradural localization. J Clin Neurosci 2023; 108:76-83. [PMID: 36623441 DOI: 10.1016/j.jocn.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/27/2022] [Accepted: 12/02/2022] [Indexed: 01/09/2023]
Abstract
BACKGROUND Determination of the intradural unruptured paraclinoid aneurysm localization is difficult, but critical for selection of the optimal treatment strategy. OBJECTIVE To assess efficacy of the three-dimensional (3D) evaluation of unruptured paraclinoid aneurysms within Leksell GammaPlan® (LGP; Elekta AB; Stockholm, Sweden) for determination of their intradural localization. METHODS Overall, 125 incidentally diagnosed unruptured paraclinoid aneurysms in 118 patients (mean age, 55 years) underwent 3D evaluation of their localization within LGP using post-contrast thin-slice constructive interference in steady state (CISS) images, which in 41 cases were additionally co-registered and fused with the axial computed tomography angiography (CTA) source images. RESULTS According to the evaluation within LGP, paraclinoid aneurysms were considered intradural, transitional, and extradural in 75, 25, and 25 cases respectively. Overall, 51 of 75 aneurysms deemed to be intradural, underwent microsurgical management, and intraoperative visual inspection confirmed their intradural localization in 45 cases, whereas it was transitional in 3, and extradural in 3. If during preoperative 3D evaluation within LGP only post-contrast CISS images were used, prediction of the pure intradural localization of aneurysm was correct in 88 % of cases (95 % CI: 79-97 %), and of the pure or partial (i.e., transitional) intradural localization in 94 % of cases (95 % CI: 88-100 %), whereas it was 100 % if co-registration and fusion of the contrast-enhanced CISS and CTA source images was done. CONCLUSION Intradural localization of the unruptured paraclinoid aneurysms may be effectively predicted based on their 3D evaluation within LGP using post-contrast thin-slice CISS and CTA source images, which may help with clinical decision-making.
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Rath TJ, Policeni B, Juliano AF, Agarwal M, Block AM, Burns J, Conley DB, Crowley RW, Dubey P, Friedman ER, Gule-Monroe MK, Hagiwara M, Hunt CH, Jain V, Powers WJ, Rosenow JM, Taheri MR, DuChene Thoma K, Zander D, Corey AS. ACR Appropriateness Criteria® Cranial Neuropathy: 2022 Update. J Am Coll Radiol 2022; 19:S266-S303. [PMID: 36436957 DOI: 10.1016/j.jacr.2022.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/07/2022] [Indexed: 11/27/2022]
Abstract
Cranial neuropathy can result from pathology affecting the nerve fibers at any point and requires imaging of the entire course of the nerve from its nucleus to the end organ in order to identify a cause. MRI with and without intravenous contrast is often the modality of choice with CT playing a complementary role. The ACR Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision process support the systematic analysis of the medical literature from peer-reviewed journals. Established methodology principles such as Grading of Recommendations Assessment, Development, and Evaluation or GRADE are adapted to evaluate the evidence. The RAND/UCLA Appropriateness Method User Manual provides the methodology to determine the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances in which peer-reviewed literature is lacking or equivocal, experts may be the primary evidentiary source available to formulate a recommendation.
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Affiliation(s)
- Tanya J Rath
- Division Chair of Neuroradiology, Mayo Clinic Arizona, Phoenix, Arizona.
| | - Bruno Policeni
- Panel Chair; Department of Radiology Vice-Chair, University of Iowa Hospitals and Clinics, Iowa City, Iowa; President Iowa Radiological Society and ACR Councilor
| | - Amy F Juliano
- Panel Vice-Chair, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts; NI-RADS committee chair
| | - Mohit Agarwal
- Froedtert Memorial Lutheran Hospital Medical College of Wisconsin, Milwaukee, Wisconsin; Fellowship Program Director
| | - Alec M Block
- Stritch School of Medicine Loyola University Chicago, Maywood, Illinois
| | - Judah Burns
- Montefiore Medical Center, Bronx, New York; Vice-Chair for Education & Residency Program Director, Montefiore Medical Center; Vice-Chair, Subcommittee on Methodology
| | - David B Conley
- Practice Director, Northwestern ENT and Rhinology Fellowship Director, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and Member, American Academy of Otolaryngology-Head and Neck Surgery
| | - R Webster Crowley
- Rush University Medical Center, Chicago, Illinois; Neurosurgery expert; Chief, Cerebrovascular and Endovascular Neurosurgery; Medical Director, Department of Neurosurgery; Surgical Director, Rush Comprehensive Stroke Center; Program Director, Endovascular Neurosurgery
| | | | - Elliott R Friedman
- University of Texas Health Science Center, Houston, Texas; Diagnostic Radiology Residency Program Director
| | - Maria K Gule-Monroe
- The University of Texas MD Anderson Cancer Center, Houston, Texas; Medical Director of Diagnostic Imaging at Houston Area Location Woodlands
| | - Mari Hagiwara
- Neuroradiology Fellowship Program Director and Head and Neck Imaging Director, New York University Langone Medical Center, New York, New York
| | | | - Vikas Jain
- MetroHealth Medical Center, Cleveland, Ohio; Medical Director, Lumina Imaging
| | - William J Powers
- University of North Carolina School of Medicine, Chapel Hill, North Carolina; American Academy of Neurology
| | - Joshua M Rosenow
- Neuroradiology Fellowship Program Director and Head and Neck Imaging Director, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - M Reza Taheri
- George Washington University Hospital, Washington, District of Columbia; Director of Neuroradiology
| | - Kate DuChene Thoma
- Director of Faculty Development Fellowship, University of Iowa Hospital, Iowa City, Iowa; Primary care physician
| | - David Zander
- Chief of Head and Neck Radiology, University of Colorado Denver, Denver, Colorado
| | - Amanda S Corey
- Specialty Chair, Atlanta VA Health Care System and Emory University, Atlanta, Georgia
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Detailed imaging of abducens nerve anatomy using contrast-enhanced 3D-TOF MR angiography. Clin Imaging 2021; 79:330-336. [PMID: 34399289 DOI: 10.1016/j.clinimag.2021.07.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/24/2021] [Accepted: 07/26/2021] [Indexed: 11/21/2022]
Abstract
PURPOSE Cranial nerves (CNs), particularly CN IV and VI are difficult to visualize with conventional MRI techniques, particularly within the cavernous sinus region. The aim of this study was to evaluate the capacity of high-resolution contrast enhanced 3D time-of-flight (TOF) MR angiography using new generation 3 T imaging technology to provide detailed visualization of CN VI anatomy, particularly within the cavernous sinus and petroclival regions. METHODS Two neuroradiologists conducted bilateral evaluation of CN VI visibility in 23 patients for nerve segments located in the petroclival segment (dural cave and Dorello's canal), and three divisions of the cavernous sinus. All images were collected using contrast enhanced TOF MR angiography using a new generation 3 T machine. RESULTS Of the CN VI segments assessed, average visibility of CN VI was best achieved in Dorello's canal. Overall visibility of CN VI within the regions inspected was best achieved in the axial view, with the exception of the dural cave, which was best assessed using the coronal view. We also identified strong agreement in assessment of nerve visibility between the two reviewers. We also identified a putative CN6 duplication and a small schwannoma, highlighting the fidelity of our approach. CONCLUSION Contrast enhanced 3D TOF MR angiography can visualize CN VI anatomy, particularly within the petrocavernosal region and cavernous sinus with simultaneous visualization of arterial and venous structures. This cannot be easily achieved using traditional MRI techniques. This imaging technique might be used with new generation machines to evaluate CN VI anatomy and pathologies within the petrocavernosal region and cavernous sinus, especially relating to vascular pathologies.
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Roques M, Biotti D, Darcourt J, Adam G, Varenne F, Bonneville F. Microvascular ischemic isolated oculomotor nerve palsy revealed by contrast-enhanced 3D-CISS imaging. J Neuroradiol 2021; 48:466-467. [PMID: 33500138 DOI: 10.1016/j.neurad.2021.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/08/2021] [Accepted: 01/08/2021] [Indexed: 10/22/2022]
Affiliation(s)
- Margaux Roques
- Department of Neuroradiology, Hôpital Pierre Paul Riquet CHU Purpan, Toulouse, France.
| | - Damien Biotti
- Department of Neurology, Hôpital Pierre Paul Riquet CHU Purpan, Toulouse, France
| | - Jean Darcourt
- Department of Neuroradiology, Hôpital Pierre Paul Riquet CHU Purpan, Toulouse, France
| | - Gilles Adam
- Department of Neuroradiology, Hôpital Pierre Paul Riquet CHU Purpan, Toulouse, France
| | - Fanny Varenne
- Department of Ophthalmology, Hôpital Pierre Paul Riquet CHU Purpan, Toulouse, France
| | - Fabrice Bonneville
- Department of Neuroradiology, Hôpital Pierre Paul Riquet CHU Purpan, Toulouse, France
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Ashraf DC, Kalin-Hajdu E, Levin MH, Kersten RC. Mixed cranial neuropathies due to occult perineural invasion of basal cell carcinoma. Am J Ophthalmol Case Rep 2019; 13:136-139. [PMID: 30705997 PMCID: PMC6348452 DOI: 10.1016/j.ajoc.2018.12.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 11/30/2018] [Accepted: 12/17/2018] [Indexed: 11/02/2022] Open
Abstract
Purpose To report a diagnostically challenging case of cranial neuropathy due to perineural invasion by a basal cell carcinoma presenting 7.5 years after treatment of the primary tumor with Mohs micrographic surgery. Observations A 62-year-old male with a history of Mohs micrographic surgery for basal cell carcinoma (BCC) of the left brow presented with insidious onset of diplopia and paresthesia localizing to the ipsilateral cranial nerves V1, V2, and VI. He had no evidence of recurrent cutaneous BCC. Magnetic resonance imaging of the orbits and skull base identified equivocal, subtle abnormalities in the ipsilateral superior orbital fissure and cavernous sinus, with normal appearance of the clinically involved nerve branches. A radiographically normal branch of cranial nerve V was biopsied and histopathology identified perineural invasion by recurrent basal cell carcinoma. Conclusions and importance The diagnosis of perineural invasion by BCC can pose several challenges, including subtle to absent imaging findings of clinically involved nerves and a lengthy latent period following primary tumor treatment. This case represents, to our knowledge, the longest reported interval between primary treatment and biopsy-proven recurrence with perineural invasion by BCC.
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Affiliation(s)
- Davin C Ashraf
- Department of Ophthalmology, University of California, San Francisco, 10 Koret Way, San Francisco, CA, 94143, USA
| | - Evan Kalin-Hajdu
- Department of Ophthalmology, University of California, San Francisco, 10 Koret Way, San Francisco, CA, 94143, USA
| | - Marc H Levin
- Department of Ophthalmology, Palo Alto Medical Foundation, 795 El Camino Real, Palo Alto, CA, 94301, USA
| | - Robert C Kersten
- Department of Ophthalmology, University of California, San Francisco, 10 Koret Way, San Francisco, CA, 94143, USA
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Juanes Méndez JA, Ruisoto P, Paniagua JC, Prats A. Advances in the Study of the Middle Cranial Fossa through Cutting Edge Neuroimaging Techniques. J Med Syst 2018; 42:38. [PMID: 29336001 DOI: 10.1007/s10916-018-0899-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 01/10/2018] [Indexed: 10/18/2022]
Abstract
The objective of this paper is to present a morphometric study of the middle cranial fossa from the study of 87 patients using cutting edge multislice computed tomography scans (32 detectors) and Magnetic Resonance Imaging. The study presents a detailed anatomical-radiological and morphometric analysis of the middle cranial fossa as well as its neurovascular elements in normal conditions. The implications of this investigation in training and clinical contexts are discussed.
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Affiliation(s)
- Juan A Juanes Méndez
- Visual Med Research Group, University of Salamanca, Salamanca, Spain. .,Departamento de Anatomía Humana, Facultad de Medicina, Universidad de Salamanca, Avda. Alfonso X El Sabio s/n, 37007, Salamanca, Spain.
| | - Pablo Ruisoto
- Visual Med Research Group, University of Salamanca, Salamanca, Spain.,European University of Madrid, Madrid, Spain
| | - Juan C Paniagua
- Neurorradiology Section, University Hospital of Salamanca, Salamanca, Spain
| | - Alberto Prats
- Visual Med Research Group, University of Salamanca, Salamanca, Spain.,Laboratory of Surgical Neuroanatomy (LSNA), Human Anatomy and Embryology Unit, Faculty of Medicine, University of Barcelona, Barcelona, Spain
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Donia MM, Gamaleldin OA, Abdo AM, Desouky SED, Helmy SAS. Intracranial neoplastic lesions of the trigeminal nerve: How MRI can help. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2017. [DOI: 10.1016/j.ejrnm.2017.07.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Conte G, Di Berardino F, Sina C, Zanetti D, Scola E, Gavagna C, Gaini L, Palumbo G, Capaccio P, Triulzi F. MR Imaging in Sudden Sensorineural Hearing Loss. Time to Talk. AJNR Am J Neuroradiol 2017; 38:1475-1479. [PMID: 28546251 DOI: 10.3174/ajnr.a5230] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 03/20/2017] [Indexed: 11/07/2022]
Abstract
Sudden sensorineural hearing loss is defined as acute hearing loss of the sensorineural type of at least 30 dB over 3 contiguous frequencies that occurs within a 72-hour period. Although many different causative factors have been proposed, sudden sensorineural hearing loss is still considered "idiopathic" in 71%-85% of cases, and treatments are empiric, not based on etiology. MR imaging implemented with a 3D FLAIR sequence has provided new insights into the etiology of sudden sensorineural hearing loss. Herein, we review the current management trends for patients with sudden sensorineural hearing loss, from the initial clinical diagnosis to therapeutic strategies and diagnostic work-up. We focused primarily on MR imaging assessment and discuss the relevance that MR imaging findings might have for patient management, pointing out different perspectives for future clinical research.
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Affiliation(s)
- G Conte
- From the Postgraduation School of Radiodiagnostics (G.C.)
| | | | - C Sina
- Neuroradiology (C.S., E.S., C.G., F.T.)
| | | | - E Scola
- Neuroradiology (C.S., E.S., C.G., F.T.)
| | - C Gavagna
- Neuroradiology (C.S., E.S., C.G., F.T.)
| | - L Gaini
- Otolaryngology (L.G., P.C.) Units, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico
| | | | - P Capaccio
- Otolaryngology (L.G., P.C.) Units, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca'Granda Ospedale Maggiore Policlinico
| | - F Triulzi
- Neuroradiology (C.S., E.S., C.G., F.T.).,Department of Pathophysiology and Transplantation (F.T.), Università degli Studi di Milano, Milan, Italy
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Barrett TF, Dyvorne HA, Padormo F, Pawha PS, Delman BN, Shrivastava RK, Balchandani P. First Application of 7-T Magnetic Resonance Imaging in Endoscopic Endonasal Surgery of Skull Base Tumors. World Neurosurg 2017; 103:600-610. [PMID: 28359922 DOI: 10.1016/j.wneu.2017.03.088] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 03/18/2017] [Accepted: 03/20/2017] [Indexed: 01/16/2023]
Abstract
BACKGROUND Successful endoscopic endonasal surgery for the resection of skull base tumors is reliant on preoperative imaging to delineate pathology from the surrounding anatomy. The increased signal-to-noise ratio afforded by 7-T MRI can be used to increase spatial and contrast resolution, which may lend itself to improved imaging of the skull base. In this study, we apply a 7-T imaging protocol to patients with skull base tumors and compare the images with clinical standard of care. METHODS Images were acquired at 7 T on 11 patients with skull base lesions. Two neuroradiologists evaluated clinical 1.5-, 3-, and 7-T scans for detection of intracavernous cranial nerves and internal carotid artery (ICA) branches. Detection rates were compared. Images were used for surgical planning and uploaded to a neuronavigation platform and used to guide surgery. RESULTS Image analysis yielded improved detection rates of cranial nerves and ICA branches at 7 T. The 7-T images were successfully incorporated into preoperative planning and intraoperative neuronavigation. CONCLUSIONS Our study represents the first application of 7-T MRI to the full neurosurgical workflow for endoscopic endonasal surgery. We detected higher rates of cranial nerves and ICA branches at 7-T MRI compared with 3- and 1.5-T MRI, and found that integration of 7 T into surgical planning and guidance was feasible. These results suggest a potential for 7-T MRI to reduce surgical complications. Future studies comparing standardized 7-, 3-, and 1.5-T MRI protocols in a larger number of patients are warranted to determine the relative benefit of 7-T MRI for endonasal endoscopic surgical efficacy.
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Affiliation(s)
- Thomas F Barrett
- Department of Neurosurgery, Mount Sinai Medical Center, New York, NY, USA.
| | - Hadrien A Dyvorne
- The Translational and Molecular Imaging Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Francesco Padormo
- The Translational and Molecular Imaging Institute, Mount Sinai Medical Center, New York, NY, USA
| | - Puneet S Pawha
- Department of Radiology, Mount Sinai Medical Center, New York, NY, USA
| | - Bradley N Delman
- Department of Radiology, Mount Sinai Medical Center, New York, NY, USA
| | - Raj K Shrivastava
- Department of Neurosurgery, Mount Sinai Medical Center, New York, NY, USA
| | - Priti Balchandani
- The Translational and Molecular Imaging Institute, Mount Sinai Medical Center, New York, NY, USA
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Özgür A, Esen K, Kara E, Temel GO. Visualization of the Abducens Nerve in its Petroclival Segment Using Contrast-Enhanced FIESTA MRI: The Size of the Petroclival Venous Confluence Affects Detectability. Clin Neuroradiol 2015; 27:97-103. [DOI: 10.1007/s00062-015-0415-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 05/15/2015] [Indexed: 11/30/2022]
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11
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Ahn SJ, Yoo MR, Suh SH, Lee SK, Lee KS, Son EJ, Chung TS. Gadolinium enhanced 3D proton density driven equilibrium MR imaging in the evaluation of cisternal tumor and associated structures: comparison with balanced fast-field-echo sequence. PLoS One 2014; 9:e103215. [PMID: 25051459 PMCID: PMC4106890 DOI: 10.1371/journal.pone.0103215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/28/2014] [Indexed: 11/18/2022] Open
Abstract
Objectives Although Gadolinium enhanced bFFE is commonly used to evaluate cisternal tumors, banding artifact may interrupt interpretation and adjacent nerve and vessels differentiation is known to be difficult. We analyzed the qualities of Gd enhanced 3D PDDE in the evaluation of cisternal tumors, comparing with bFFE. Material and Methods Forty five cisternal tumors (33 schwannoma and 12 meningioma) on both bFFE and PDDE were retrospectively reviewed. For quantitative analysis, contrast ratios of CSF to tumor and tumor to parenchyma (CRC/T and CRT/P) on both sequences were compared by paired t-test. For qualitative analysis, the readers gauged the qualities of the two MR sequences with respect to the degree of demarcating cisternal structures (tumor, basilar artery, AICA, trigeminal nerve, facial nerve and vestibulocochlear nerve). Results In quantitative analysis, CRC/T and CRT/P on 3D PDDE was significantly lower than that of 3D bFFE (p<0.01). In qualitative analysis, basilar artery, AICA, facial nerve and vestibulocochlear nerves were significantly better demarcated on 3D PDDE than on bFFE (p<0.01). The degree of demarcation of tumor on 3D PDDE was not significantly different with that on 3D bFFE (p = 0.13). Conclusion Although the contrast between tumor and the surrounding structures are reduced, Gd enhanced 3D PDDE provides better demarcation of cranial nerves and major vessels adjacent to cisternal tumors than Gd enhanced bFFE
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Affiliation(s)
- Sung Jun Ahn
- Department of Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Mi Ri Yoo
- Department of Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sang Hyun Suh
- Department of Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung-Koo Lee
- Department of Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyu Sung Lee
- Department of Neurosurgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Eun Jin Son
- Department of Otorhinolarygology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Tae-Sub Chung
- Department of Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea
- * E-mail:
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Xia S, Li R, Li Y, Qian X, Chong V, Qi J. MRI findings in Duane's ocular retraction syndrome. Clin Radiol 2014; 69:e191-8. [DOI: 10.1016/j.crad.2013.12.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 11/25/2013] [Accepted: 12/12/2013] [Indexed: 11/27/2022]
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13
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Watanabe K, Kakeda S, Yamamoto J, Watanabe R, Nishimura J, Ohnari N, Nishizawa S, Korogi Y. Delineation of Optic Nerves and Chiasm in Close Proximity to Large Suprasellar Tumors with Contrast-enhanced FIESTA MR Imaging. Radiology 2012; 264:852-8. [DOI: 10.1148/radiol.12111363] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Okawa S, Hanazono A, Sugawara M, Takahashi S, Otani T, Hanyu N, Suzuki A, Mizoi K, Ohnishi H. Contrast-enhanced 3D FIESTA imaging in Tolosa-Hunt syndrome. Headache 2012; 52:822-4. [PMID: 22435718 DOI: 10.1111/j.1526-4610.2012.02089.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Satoshi Okawa
- Department of Neurology, Akita University School of Medicine, Akita, Japan
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Abstract
PURPOSE OF REVIEW Radiologic imaging is indispensible for the diagnosis and management of many neuro-ophthalmologic conditions. Advances in the radioimaging of neuro-ophthalmologic disorders may evolve from the clinical or the radiological side, meaning there is a constant stream of new information for the clinician. RECENT FINDINGS Functional MRI, diffusion tensor MRI, magnetization transfer imaging, and magnetic resonance spectroscopy are examples of nonstandard radiographic techniques, which have expanded the knowledge of neuro-ophthalmologic conditions. Studies using conventional MRI have also led to advances in understanding optic neuropathies, the ocular motor system, pseudotumor cerebri, posterior reversible encephalopathy syndrome and migraine. SUMMARY This article discusses recent radiologic advances relevant to neuro-ophthalmology.
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Linn J, Peters F, Lummel N, Schankin C, Rachinger W, Brueckmann H, Yousry I. Detailed imaging of the normal anatomy and pathologic conditions of the cavernous region at 3 Tesla using a contrast-enhanced MR angiography. Neuroradiology 2011; 53:947-54. [PMID: 21271242 DOI: 10.1007/s00234-011-0837-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 01/10/2011] [Indexed: 11/29/2022]
Abstract
INTRODUCTION The purpose of this study was to evaluate the potential of a high-resolution contrast-enhanced magnetic resonance angiography (CE-MRA) at 3 Tesla for the delineation of the cavernous sinus (CS) anatomy both under normal and under pathological conditions. METHODS Fifteen patients without pathologies in the CS and ten patients with pituitary adenomas were included. The CE-MRA was performed on a 3-Tesla scanner and analyzed collaboratively by two readers. The cranial nerves (CNs) within the CS, namely CNIII, CNIV, CNV1, CNV2, and CNVI, were identified in both patient groups. In the adenoma patients it was also assessed whether and to which extend the adenoma invaded the CS and the spatial relationship between tumor and CNs was determined. RESULTS In the patients with normal CS anatomy, CNIII could be identified in 100%, CNIV in 86.7%, and CNV1, CNV2, as well as CNVI in 100% of analyzed sides. Pituitary adenomas invaded the CS unilaterally (right side) in four patients, and bilaterally in six patients. In patients with adenomas, the CN could be identified and differentiated from the tumor in the following percentages: CNIII in 100%, CNIV in 70%, both CNV1 and CNV2 in 90%, and CNVI in 100%. In all these cases, the tumor-nerve spatial relationship could be visualized. CONCLUSIONS 3-Tesla CE-MRA allows detailed imaging of the complex anatomy of the CS and its structures. In adenoma patients, it clearly visualizes the spatial relationship between tumor and CNs, and thus might be helpful to optimize presurgical planning.
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Affiliation(s)
- Jennifer Linn
- Department of Neuroradiology, University Hospital Munich, Marchioninistr. 15, 81377, Munich, Germany.
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Farina D, Borghesi A, Botturi E, Ravanelli M, Maroldi R. Treatment monitoring of paranasal sinus tumors by magnetic resonance imaging. Cancer Imaging 2010; 10:183-93. [PMID: 20713318 PMCID: PMC2943677 DOI: 10.1102/1470-7330.2010.0025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Treatment monitoring of paranasal tumors is crucial, given the high rate of local and regional relapses that impairs the overall prognosis of patients. Magnetic resonance imaging (MRI) is the technique of choice to detect changes in the submucosa and deep spaces of the suprahyoid neck, inaccessible at clinical and endoscopic assessment. Correct interpretation of MRI requires detailed knowledge of the treatment applied and of the changes treatments are supposed to produce on macroscopic anatomy and tissue signals. Once such background of information is obtained, detection of recurrences is a less challenging task.
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Affiliation(s)
- Davide Farina
- Department of Radiology, Università degli Studi, Brescia, 25123, Italy.
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Dural attachment of intracranial meningiomas: evaluation with contrast-enhanced three-dimensional fast imaging with steady-state acquisition (FIESTA) at 3 T. Neuroradiology 2010; 53:413-23. [DOI: 10.1007/s00234-010-0751-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2010] [Accepted: 07/15/2010] [Indexed: 10/19/2022]
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