1
|
Abstract
Magnetic resonance (MR) imaging is a crucial tool for evaluation of the skull base, enabling characterization of complex anatomy by utilizing multiple image contrasts. Recent technical MR advances have greatly enhanced radiologists' capability to diagnose skull base pathology and help direct management. In this paper, we will summarize cutting-edge clinical and emerging research MR techniques for the skull base, including high-resolution, phase-contrast, diffusion, perfusion, vascular, zero echo-time, elastography, spectroscopy, chemical exchange saturation transfer, PET/MR, ultra-high-field, and 3D visualization. For each imaging technique, we provide a high-level summary of underlying technical principles accompanied by relevant literature review and clinical imaging examples.
Collapse
Affiliation(s)
- Claudia F Kirsch
- Division Chief, Neuroradiology, Professor of Neuroradiology and Otolaryngology, Department of Radiology, Northwell Health, Zucker Hofstra School of Medicine at Northwell, North Shore University Hospital, Manhasset, NY
| | - Mai-Lan Ho
- Associate Professor of Radiology, Director of Research, Department of Radiology, Director, Advanced Neuroimaging Core, Chair, Asian Pacific American Network, Secretary, Association for Staff and Faculty Women, Nationwide Children's Hospital and The Ohio State University, Columbus, OH; Division Chief, Neuroradiology, Professor of Neuroradiology and Otolaryngology, Department of Radiology, Northwell Health, Zucker Hofstra School of Medicine at Northwell, North Shore University Hospital, Manhasset, NY.
| |
Collapse
|
2
|
Smith M, Bambach S, Selvaraj B, Ho ML. Zero-TE MRI: Potential Applications in the Oral Cavity and Oropharynx. Top Magn Reson Imaging 2021; 30:105-115. [PMID: 33828062 DOI: 10.1097/rmr.0000000000000279] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
ABSTRACT Zero-echo time (ZTE) magnetic resonance imaging (MRI) is the newest in a family of MRI pulse sequences that involve ultrafast sequence readouts, permitting visualization of short-T2 tissues such as cortical bone. Inherent sequence properties enable rapid, high-resolution, quiet, and artifact-resistant imaging. ZTE can be performed as part of a "one-stop-shop" MRI examination for comprehensive evaluation of head and neck pathology. As a potential alternative to computed tomography for bone imaging, this approach could help reduce patient exposure to ionizing radiation and improve radiology resource utilization. Because ZTE is not yet widely used clinically, it is important to understand the technical limitations and pitfalls for diagnosis. Imaging cases are presented to demonstrate potential applications of ZTE for imaging of oral cavity, oropharynx, and jaw anatomy and pathology in adult and pediatric patients. Emerging studies indicate promise for future clinical implementation based on synthetic computed tomography image generation, 3D printing, and interventional applications.
Collapse
Affiliation(s)
- Mark Smith
- Department of Radiology, Nationwide Children's Hospital, Columbus, OH
| | - Sven Bambach
- Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH
| | - Bhavani Selvaraj
- Department of Radiology, Nationwide Children's Hospital, Columbus, OH
| | - Mai-Lan Ho
- Department of Radiology, Nationwide Children's Hospital, Columbus, OH
| |
Collapse
|
3
|
Lu A, Gorny KR, Ho ML. Zero TE MRI for Craniofacial Bone Imaging. AJNR Am J Neuroradiol 2020; 40:1562-1566. [PMID: 31467238 DOI: 10.3174/ajnr.a6175] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 07/08/2019] [Indexed: 11/07/2022]
Abstract
Zero TE MR imaging is a novel technique that achieves a near-zero time interval between radiofrequency excitation and data acquisition, enabling visualization of short-T2 materials such as cortical bone. Zero TE offers a promising radiation-free alternative to CT with rapid, high-resolution, silent, and artifact-resistant imaging, as well as the potential for "pseudoCT" reconstructions. In this report, we will discuss our preliminary experience with zero TE, including technical principles and a clinical case series demonstrating emerging applications in neuroradiology.
Collapse
Affiliation(s)
- A Lu
- Department of Medical Physics (A.L., K.R.G.), Mayo Clinic, Rochester, Minnesota
| | - K R Gorny
- Department of Medical Physics (A.L., K.R.G.), Mayo Clinic, Rochester, Minnesota
| | - M-L Ho
- From the Department of Radiology, Nationwide Children's Hospital (M.-L.H.), The Ohio State University College of Medicine, Columbus, Ohio
| |
Collapse
|
4
|
Ognard J, Deloire L, Saccardy C, Burdin V, Ben Salem D. Automated contour detection in spine radiographs and computed tomography reconstructions for forensic comparative identification. Forensic Sci Med Pathol 2019; 16:99-106. [PMID: 31768873 DOI: 10.1007/s12024-019-00189-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2019] [Indexed: 12/23/2022]
Abstract
This study was conducted to test an automated method to identify unknown individuals. It relies on a previous radiographic file and uses an edge-based comparison of lumbar CT/PMCT reconstructions and radiographs. The living group was composed of 15 clinical lumbar spine CT scans and 15 paired radiographs belonging to the same patients. The deceased group consisted of 5 lumbar spine PMCT scans and 5 paired antemortem radiographs of deceased individuals plus the 15 unpaired radiographs belonging to the living. An automated method using image filtering (anisotropic diffusion) and edge detection (Canny filter) provided image contours. Cross comparisons of all the exams in each group were performed using similarity measurements under the affine registration hypothesis. The Dice coefficient and Hausdorff distance values were significantly linked (p < 0.001 and p = 0.001 respectively) to the matched examinations in the living group (p < 0.001; pseudo-R2 = 0.70). 12 of the 15 examinations were correctly paired, 2 were wrongly paired and 3 were not paired when they must have been. In the deceased group, the Hausdorff distance was significantly linked (p = 0.018) to the matched examinations (p < 0.001; pseudo-R2 = 0.62; Dice coefficient p = 0.138). The paired examinations were all correctly found, but one was wrongly paired. The negative predictive value was above 98% for both groups. We highlighted the feasibility of comparative radiological identification using automated edge detection in cross-modality (CT/PMCT scan and radiographs) examinations. This method could be of significant help to a radiologist or coroner in identifying unknown cadavers.
Collapse
Affiliation(s)
- Julien Ognard
- Department of Radiology, University Hospital of Brest, Bd. Tanguy Prigent, 29609, Brest Cedex, France. .,Laboratory of Medical Information Processing -LaTIM INSERM UMR 1101, 22 avenue Camille Desmoulins, CS 93837 - 29238, Brest Cedex 3, France.
| | - Lucile Deloire
- Department of Radiology, University Hospital of Brest, Bd. Tanguy Prigent, 29609, Brest Cedex, France.,Laboratory of Medical Information Processing -LaTIM INSERM UMR 1101, 22 avenue Camille Desmoulins, CS 93837 - 29238, Brest Cedex 3, France
| | - Claire Saccardy
- Forensic Imaging Unit, University Hospital of Brest, Bd. Tanguy Prigent, 29609, Brest Cedex, France
| | - Valerie Burdin
- Laboratory of Medical Information Processing -LaTIM INSERM UMR 1101, 22 avenue Camille Desmoulins, CS 93837 - 29238, Brest Cedex 3, France.,Institut Mines Telecom Atlantique, CS 83818, 655, avenue du Technopole, 29200, Plouzané, France
| | - Douraied Ben Salem
- Department of Radiology, University Hospital of Brest, Bd. Tanguy Prigent, 29609, Brest Cedex, France.,Laboratory of Medical Information Processing -LaTIM INSERM UMR 1101, 22 avenue Camille Desmoulins, CS 93837 - 29238, Brest Cedex 3, France.,Institut Mines Telecom Atlantique, CS 83818, 655, avenue du Technopole, 29200, Plouzané, France
| |
Collapse
|
5
|
Jin C, Li H, Li X, Wang M, Liu C, Guo J, Yang J. Temporary Hearing Threshold Shift in Healthy Volunteers with Hearing Protection Caused by Acoustic Noise Exposure during 3-T Multisequence MR Neuroimaging. Radiology 2018; 286:602-608. [PMID: 28813235 DOI: 10.1148/radiol.2017161622] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Chao Jin
- From the Department of Diagnostic Radiology, the First Affiliated Hospital of Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, PR China (C.J., H.L., X.L., M.W., C.L., J.G., J.Y.); and Department of Biomedical Engineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, PR China (X.L., J.Y.)
| | - Huan Li
- From the Department of Diagnostic Radiology, the First Affiliated Hospital of Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, PR China (C.J., H.L., X.L., M.W., C.L., J.G., J.Y.); and Department of Biomedical Engineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, PR China (X.L., J.Y.)
| | - Xianjun Li
- From the Department of Diagnostic Radiology, the First Affiliated Hospital of Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, PR China (C.J., H.L., X.L., M.W., C.L., J.G., J.Y.); and Department of Biomedical Engineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, PR China (X.L., J.Y.)
| | - Miaomiao Wang
- From the Department of Diagnostic Radiology, the First Affiliated Hospital of Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, PR China (C.J., H.L., X.L., M.W., C.L., J.G., J.Y.); and Department of Biomedical Engineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, PR China (X.L., J.Y.)
| | - Congcong Liu
- From the Department of Diagnostic Radiology, the First Affiliated Hospital of Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, PR China (C.J., H.L., X.L., M.W., C.L., J.G., J.Y.); and Department of Biomedical Engineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, PR China (X.L., J.Y.)
| | - Jianxin Guo
- From the Department of Diagnostic Radiology, the First Affiliated Hospital of Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, PR China (C.J., H.L., X.L., M.W., C.L., J.G., J.Y.); and Department of Biomedical Engineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, PR China (X.L., J.Y.)
| | - Jian Yang
- From the Department of Diagnostic Radiology, the First Affiliated Hospital of Xi’an Jiaotong University, 277 West Yanta Road, Xi’an 710061, PR China (C.J., H.L., X.L., M.W., C.L., J.G., J.Y.); and Department of Biomedical Engineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, PR China (X.L., J.Y.)
| |
Collapse
|
6
|
Soker G, Bozkirli E, Soker E, Gulek B, Arslan M, Memis D, Yilmaz C. Magnetic resonance imaging evaluation of shoulder joint in patients with early stage of ankylosing spondylitis: A case-control study. Diagn Interv Imaging 2016; 97:419-24. [DOI: 10.1016/j.diii.2015.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 09/30/2015] [Accepted: 10/07/2015] [Indexed: 10/22/2022]
|