Application of Adaptive Image Receive Coil Technology for Whole-Brain Imaging

Cogswell, Petrice M; Trzasko, Joshua D.; Gray, Erin M.; Campeau, Norbert G.; Rossman, Phillip J.; Kang, Daehun; Robb, Fraser; Stormont, Robert S; Lindsay, Scott A.; McGee, Kiaran P.; Huston, John

doi:10.2214/ajr.20.22812

Cited by 17 publications

(20 citation statements)

References 16 publications

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“…By adopting densely overlapped thin wire loops with a special conductive material named a INCA conductor instead of conventional copper loops, AIR coil has gained lightness and flexibility [ 13 , 14 ]. Conventional coil arrays are fixed in rigid housing to avoid damage and maintain critical overlap between loops for delivering the best SNR.…”

Section: Discussionmentioning

confidence: 99%

“…Conventional coil arrays are fixed in rigid housing to avoid damage and maintain critical overlap between loops for delivering the best SNR. With an INCA conductor connected to a printed circuit board module, AIR coil was designed to reduce coil–coil mutual inductance and coupling between adjacent loops, achieving high decoupling between coil elements and relaxing coil overlap requirements [ 13 , 14 ]. The major interest of this work was to evaluate how such flexibility and interaction between closely overlapped coil elements of 30-channel AIR Anterior Array coil benefit the image quality in lung imaging, combined with a 40-channel posterior array coil.…”

Section: Discussionmentioning

confidence: 99%

“…However, limited information is available about the clinical performance of AIR coil. The feasibility of prototype balaclava AIR coil for whole-brain imaging has been reported [ 14 ]. AIR coil in a blanket type has been introduced for various body parts including spine, chest, abdomen, and extremities [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Application of Highly Flexible Adaptive Image Receive Coil for Lung MR Imaging Using Zero TE Sequence: Comparison with Conventional Anterior Array Coil

Bae

Jeon

Hwang³

et al. 2022

Diagnostics

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(1) Background: Highly flexible adaptive image receive (AIR) coil has become available for clinical use. The present study aimed to evaluate the performance of AIR anterior array coil in lung MR imaging using a zero echo time (ZTE) sequence compared with conventional anterior array (CAA) coil. (2) Methods: Sixty-six patients who underwent lung MR imaging using both AIR coil (ZTE-AIR) and CAA coil (ZTE-CAA) were enrolled. Image quality of ZTE-AIR and ZTE-CAA was quantified by calculating blur metric value, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) of lung parenchyma. Image quality was qualitatively assessed by two independent radiologists. Lesion detection capabilities for lung nodules and emphysema and/or lung cysts were evaluated. Patients’ comfort levels during examinations were assessed. (3) Results: SNR and CNR of lung parenchyma were higher (both p < 0.001) in ZTE-AIR than in ZTE-CAA. Image sharpness was superior in ZTE-AIR (p < 0.001). Subjective image quality assessed by two independent readers was superior (all p < 0.05) in ZTE-AIR. AIR coil was preferred by 64 of 66 patients. ZTE-AIR showed higher (all p < 0.05) sensitivity for sub-centimeter nodules than ZTE-CAA by both readers. ZTE-AIR showed higher (all p < 0.05) sensitivity and accuracy for detecting emphysema and/or cysts than ZTE-CAA by both readers. (4) Conclusions: The use of highly flexible AIR coil in ZTE lung MR imaging can improve image quality and patient comfort. Application of AIR coil in parenchymal imaging has potential for improving delineation of low-density parenchymal lesions and tiny nodules.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Application of Highly Flexible Adaptive Image Receive Coil for Lung MR Imaging Using Zero TE Sequence: Comparison with Conventional Anterior Array Coil

Bae

Jeon

Hwang³

et al. 2022

Diagnostics

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“…The anterior UNIC coil was unable to closely surround the body contour as a semi-flexible product coil would do, which can create spacing between the coils and the subject at the peripheral of the field of view and result in suboptimal receive and B0 shim performances. Yet, owing to the intrinsic decoupling scheme, UNIC is adaptable to semiflexible or flexible RF coils [71][72][73][74] , where soft electronics can be employed. A potential complication in using a flexible UNIC coil is that the subject movement may lead to shim field deformation during image acquisition and results in erroneous B0 shim.…”

Section: Discussionmentioning

confidence: 99%

Ultra-Homogeneous B0 field for High-Field Body Magnetic Resonance Imaging with Unified Shim-RF Coils

Yang¹,

Serry²,

Hu³

et al. 2021

Preprint

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High-field magnetic resonance imaging (MRI, 3.0T and above) offers numerous advantages for imaging the human body over lower-field strengths. However, it suffers from unwanted fast spatially-varying main (B0 ) fields caused by the susceptibility mismatch at the tissue interfaces. When this is combined with the anatomical complexity of the human body, undesirable image artifacts can become damaging as they can compromise potential image contrasts, limit the use of accelerated imaging, and interfere with clinical interpretation. Consequently, these limitations restrict the effective utilization of high-field body MRI and emphasize the need for a major improvement in B0 field homogeneity to take full advantage of the ever increased B0 field. Here we introduce a Unified shim-RF Coil (UNIC) to overcome this existing bottleneck by transcending the conventional low-efficiency, distantly located B0 shim coils. UNIC allows a shim array to be freely allotted and seamlessly integrated into a standard surface RF coil, thus maximizing both the performance of RF receive sensitivity and effective B0 shimming. We demonstrate the capacity of the UNIC approach through detailed characterization of the coil design, prototyping a body coil integrating the UNIC features, and conducting in-vivo imaging of deep organs adjacent to the lung. Our studies provide evidence that UNIC enables homogeneous B0 fields in the liver and the heart, where strong image artifacts are known to occur, and hence facilitate the acquisition of unprecedented image quality in a clinical 3.0T scanner. Further, UNIC’s design is practical as it overcomes one of the most, if not the most, critical limitations of the state-of-the-art high-field MRI with minimal changes to the current MRI hardware architecture. Accordingly, the proposed technique offers opportunities for major advancements in noninvasive imaging of deep organs with high-field imaging in a way it has not been possible thus far.

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“…Two client computers use SDK to obtain skeleton data and send it to server-side PC through local Ethernet. All bone data are processed in the server, and then, the fused bone data is transmitted to the Unity3d scene for visualization [20]. Because Kinect has the disadvantage of self-occlusion, it cannot obtain the full picture of human posture.…”

Section: Overall Design Of Whole Body Motion Capture Systemmentioning

confidence: 99%

Application of Adaptive Virtual Reality with AI-Enabled Techniques in Modern Sports Training

Zhang

Tsai

2021

Mobile Information Systems

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Virtual reality technology has many characteristics, such as high immersion, dynamic interactive response, and multidimensional information digitization. These characteristics are needed by the combination of modern sports development and scientific and technological progress. The introduction of virtual reality technology into the field of sports will be conducive to the scientific training of sports competition and the digital research of technical theory and to the rapid development of modern sports. This paper constructs the framework of sports training based on virtual reality technology and designs a motion capture data algorithm based on behavior string, which successfully improves the advantages of virtual reality technology. In addition, the training experiment method is used to verify the effectiveness and superiority of the system, focusing on the high-school students learning tennis for the first time as the experimental object to study the differences in training effects between the traditional training method and the training method using virtual reality technology. The training effect of tennis is better than the traditional training method, and the difference is significant; the internal motivation of training psychology is better than the traditional training method, and the difference is significant. Compared with the traditional training method, this training method can stimulate students’ interest in training, improve students’ training effect, and promote students’ psychological internal motivation to continue training. This study provides useful enlightenment for the further application of virtual reality technology and in the modern sports training for various sports events.

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Application of Adaptive Image Receive Coil Technology for Whole-Brain Imaging

Cited by 17 publications

References 16 publications

Application of Highly Flexible Adaptive Image Receive Coil for Lung MR Imaging Using Zero TE Sequence: Comparison with Conventional Anterior Array Coil

Application of Highly Flexible Adaptive Image Receive Coil for Lung MR Imaging Using Zero TE Sequence: Comparison with Conventional Anterior Array Coil

Ultra-Homogeneous B0 field for High-Field Body Magnetic Resonance Imaging with Unified Shim-RF Coils

Application of Adaptive Virtual Reality with AI-Enabled Techniques in Modern Sports Training

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