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Payne K, Zhao Y, Ying LL, Zhang X. Design of a well decoupled 4-channel catheter Radio Frequency coil array for endovascular MR imaging at 3T. PROCEEDINGS OF THE INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE ... SCIENTIFIC MEETING AND EXHIBITION. INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE. SCIENTIFIC MEETING AND EXHIBITION 2023; 31:4389. [PMID: 37600526 PMCID: PMC10440073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Affiliation(s)
- Komlan Payne
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, United States
| | - Yunkun Zhao
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, United States
| | - Leslie Lei Ying
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, United States
| | - Xiaoliang Zhang
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, United States
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Payne K, Zhao Y, Ying LL, Zhang X. Detection and tracking enhancement using 4-channels local standalone resonators for catheterized interventional MRI at 3T. PROCEEDINGS OF THE INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE ... SCIENTIFIC MEETING AND EXHIBITION. INTERNATIONAL SOCIETY FOR MAGNETIC RESONANCE IN MEDICINE. SCIENTIFIC MEETING AND EXHIBITION 2023; 31:4978. [PMID: 37641659 PMCID: PMC10460957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Affiliation(s)
- Komlan Payne
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, United States
| | - Yunkun Zhao
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, United States
| | - Leslie L Ying
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, United States
| | - Xiaoliang Zhang
- Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, United States
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Du F, Li N, Yang X, Zhang B, Zhang X, Li Y. Design and construction of an 8-channel transceiver coil array for rat imaging at 9.4 T. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2023; 351:107302. [PMID: 37116433 DOI: 10.1016/j.jmr.2022.107302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 08/27/2022] [Accepted: 09/11/2022] [Indexed: 05/29/2023]
Abstract
Ultra-high field (UHF) small animal magnetic resonance imaging (MRI) is a crucial tool permitting investigation of metabolic diseases and identification of imaging biomarkers suitable for clinical diagnosis and translation. Radiofrequency (RF) coils are critical components in enabling acquisition of high-quality rat abdomen MRI data. However, efficient RF coils with high-channel count, capable of sensitive and accelerated rat abdomen imaging at 9.4 T, are not available commercially. The SNR of the commonly-used 9.4 T birdcage coil is relatively weak, particularly in the peripheral area of the subject. In addition, the birdcage is not readily to perform parallel imaging due to unavailability of the required multiple channels. Consequently, the extended scanning duration may cause unnecessary hazards to the rat. In this work, an 8-channel transceiver coil array was designed and constructed to provide good image quality and large coverage for rat abdomen imaging at 9.4 T. The structure and the performance of the developed array was optimized and evaluated by numerical electromagnetic simulations and bench tests, respectively. The MR imaging experiments in phantoms and rat models were also performed on a Bruker 9.4 T preclinical MRI system to validate the feasibility of the proposed design. The coil array supports a one-dimensional acceleration factor up to R = 4, providing good parallel imaging capabilities. These results demonstrated that the proposed 8-channel transceiver coil array for rat imaging has the ability to obtain high spatial resolution of rat abdomen anatomical structure images at 9.4 T.
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Affiliation(s)
- Feng Du
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong Province, Shenzhen 518055, Guang Dong, China
| | - Nan Li
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong Province, Shenzhen 518055, Guang Dong, China
| | - Xing Yang
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong Province, Shenzhen 518055, Guang Dong, China
| | - Baogui Zhang
- State Key Laboratory of Brain and Cognitive Sciences, Beijing MRI Center for Brain Research, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaoliang Zhang
- Department of Biomedical Engineering, State University of New York at Buffalo, NY, United States., Buffalo, NY, United States
| | - Ye Li
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong Province, Shenzhen 518055, Guang Dong, China.
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Meng Y, Mo Z, Hao J, Peng Y, Yan H, Mu J, Ma D, Zhang X, Li Y. High-resolution intravascular magnetic resonance imaging of the coronary artery wall at 3.0 Tesla: toward evaluation of atherosclerotic plaque vulnerability. Quant Imaging Med Surg 2021; 11:4522-4529. [PMID: 34737920 DOI: 10.21037/qims-21-286] [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: 03/16/2021] [Accepted: 07/05/2021] [Indexed: 11/06/2022]
Abstract
Background To validate the feasibility of generating high-resolution intravascular 3.0 Tesla (T) magnetic resonance imaging of the coronary artery wall to further plaque imaging. Methods A receive-only 0.014-inch diameter magnetic resonance imaging guidewire (MRIG) was manufactured for intravascular imaging within a phantom experiment and the coronary artery wall of the swine. For coronary artery wall imaging, both high-resolution images and conventional resolution images were acquired. A 16-channel commercial surface coil for magnetic resonance imaging was employed for the control group. Results For the phantom experiment, the MRIG showed a higher signal-to-noise ratio than the surface coil. The peak signal-to-noise ratio of the MRIG and the surface coil-generated imaging were 213.6 and 19.8, respectively. The signal-to-noise ratio decreased rapidly as the distance from the MRIG increased. For the coronary artery wall experiment, the vessel wall imaging by the MRIG could be identified clearly, whereas the vessel wall imaging by the surface coil was blurred. The average signal-to-noise ratio of the artery wall was 21.1±5.40 by the MRIG compared to 8.4±2.19 by the surface coil, where the resolution was set at 0.2 mm × 0.2 mm × 2 mm. As expected, the high-resolution sequence clearly showed more details than the conventional resolution sequence set at 0.7 mm × 0.7 mm × 2.0 mm. Histological examination showed no evidence of mechanical injuries in the target vessel walls. Conclusions The study validated the feasibility of generating magnetic resonance imaging (MRI) at 0.2 mm × 0.2 mm × 2 mm for the coronary artery wall using a 0.014 inch MRIG.
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Affiliation(s)
- Yanfeng Meng
- Department of MRI, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, China
| | - Zhiguang Mo
- Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.,The Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong Province, Shenzhen, China
| | - Jinying Hao
- Department of MRI, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, China
| | - Yueyou Peng
- Department of MRI, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, China
| | - Hui Yan
- Department of MRI, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, China
| | - Jingbo Mu
- Department of Cardiology, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, China
| | - Dengfeng Ma
- Department of Cardiology, Taiyuan Central Hospital of Shanxi Medical University, Taiyuan, China
| | - Xiaoliang Zhang
- Department of Biomedical Engineering, State University of New York at Buffalo, NY, USA
| | - Ye Li
- Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.,The Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong Province, Shenzhen, China
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Abstract
Interventional neuro-oncology encompasses an array of image-guided therapies-intra-arterial chemotherapy, regional drug delivery, chemoembolization, tumor ablation-along with techniques to improve therapy delivery such as physical or chemical blood-brain barrier disruption and percutaneous catheter placement. Endovascular and percutaneous image-guided approaches to the treatment of the brain, eye, and other head and neck tumors will be discussed.
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Affiliation(s)
- Monica S Pearl
- Division of Interventional Neuroradiology, Johns Hopkins Hospital, Baltimore, MD, United States; Department of Radiology, Children's National Medical Center, Washington, DC, United States.
| | - Nalin Gupta
- Division of Pediatric Neurosurgery, University of California San Francisco Benioff Children's Hospital, San Francisco, CA, United States
| | - Steven W Hetts
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States
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Li Y, Chen Q, Wei Z, Zhang L, Tie C, Zhu Y, Jia S, Xia J, Liang D, He Q, Zhang X, Liu X, Zhang B, Zheng H. One-Stop MR Neurovascular Vessel Wall Imaging With a 48-Channel Coil System at 3 T. IEEE Trans Biomed Eng 2019; 67:2317-2327. [PMID: 31831406 DOI: 10.1109/tbme.2019.2959030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE The purpose of this article was to build a radio frequency (RF) coil system to achieve high vessel wall image quality with coverage extending from the aortic arch to the intracranial vessels. METHODS A 48-channel coil system was built and characterized at a 3 tesla (T) Magnetic Resonance Imaging (MRI) scanner (uMR 790, Shanghai United Imaging Healthcare, Shanghai, China). The coil's performance was compared with a commercially available 36-channel coil system. By human studies, signal-to-noise ratio (SNR) units were evaluated and g-factors were calculated in the transverse planes of the brain and neck regions. RESULTS The SNR was increased by at least 28% in the brain region and up to fourfold in the neck region. The average g-factor with the acceleration factor, R = 3, was lowered by 21% in the transverse plane of the neck region. Intracranial and carotid arterial wall images with an isotropic spatial resolution of 0.63 mm were acquired within 7.7 minutes and thoracic aorta wall images with an isotropic spatial resolution of 1.1 mm were acquired within 2.7 minutes with the 48-channel coil system. The vessel wall can be more clearly visualized with the 48-channel coil system compared with the 36-channel coil system. CONCLUSION A 48-channel coil system was developed and demonstrated superior performance for vessel wall imaging at the intracranial and cervical carotid arteries compared with a commercial 36-channel coil. SIGNIFICANCE The 48-channel coil system is potentially useful for clinical diagnostics, especially when attempting to diagnose ischemic stroke.
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Zeng X, Xu S, Cao C, Wang J, Qian C. Wireless amplified NMR detector for improved visibility of image contrast in heterogeneous lesions. NMR IN BIOMEDICINE 2018; 31:e3963. [PMID: 30011104 PMCID: PMC6108921 DOI: 10.1002/nbm.3963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 05/17/2018] [Accepted: 05/23/2018] [Indexed: 05/23/2023]
Abstract
To demonstrate the capability of a wireless amplified NMR detector (WAND) to improve the visibility of lesion heterogeneity without the use of exogenous contrast agents, a cylindrically symmetric WAND was constructed to sensitively detect and simultaneously amplify MR signals emitted from adjacent tissues. Based on a two-leg high-pass birdcage coil design, this WAND could be activated by a pumping field aligned along the main field (B0 ), without perturbing MR signal reception. Compared with an equivalent pair of external detectors, the WAND could achieve more than 10-fold gain for immediately adjacent regions. Even for regions with 3.4 radius distance separation from the detector's cylindrical center, the WAND was at least 1.4 times more sensitive than an equivalent pair of surface arrays or at least twice as sensitive as a single-sided external surface detector. When the WAND was inserted into a rat's rectum to observe adjacent tumors implanted beneath the mucosa, it could enhance the detection sensitivity of lesion regions, and thus enlarge the observable signal difference between heterogeneous tissues and clearly identify lesion boundaries as continuous lines in the intensity gradient profile. Hyperintense regions observable by the WAND existed due to higher levels of blood supply, which was indicated by a similar pattern of signal enhancement after contrast agent administration. By better observing the endogenous signal contrast, the endoluminal WAND could characterize lesions without the use of exogenous contrast agents, and thus reduce contrast-induced toxicity.
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Affiliation(s)
- Xianchun Zeng
- Department of Radiology, Southwest Hospital, Army Medical University, Chongqing, China
- Department of Radiology, Guizhou Provincial People’s Hospital, Guiyang, China
- Department of Radiology, Michigan State University, East Lansing, MI, USA
| | - Shengqiang Xu
- Department of Radiology, Michigan State University, East Lansing, MI, USA
| | - Changyong Cao
- Laboratory of Soft Machines and Electronics, School of Packaging, Departments of Mechanical, Electrical and Computer Engineering, Michigan State University, East Lansing, MI, USA
| | - Jian Wang
- Department of Radiology, Southwest Hospital, Army Medical University, Chongqing, China
- Correspondence: Jian Wang, 30 Gaotanyan Rd, Chongqing, China, 400038, Tel: +86 (23) 68754419; Fax: +86 (23) 65463026, , Chunqi Qian, 846 Service Rd, East Lansing, MI, 48824, Tel: +1 (517) 884-3292; Fax: +1 (517) 432-2849,
| | - Chunqi Qian
- Department of Radiology, Michigan State University, East Lansing, MI, USA
- Correspondence: Jian Wang, 30 Gaotanyan Rd, Chongqing, China, 400038, Tel: +86 (23) 68754419; Fax: +86 (23) 65463026, , Chunqi Qian, 846 Service Rd, East Lansing, MI, 48824, Tel: +1 (517) 884-3292; Fax: +1 (517) 432-2849,
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