Results 11 - 20
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496
Design And Implementation Of Surgical Instruments, Devices, And Receiver Coils For Intraoperative Mri-Guided Neurosurgical And Neuro Ablative Procedures
, 2001
"... he procedure, to enable monitoring of therapy, precise guidance for biopsies, and tracking of anatomical changes as surgical resection progresses. Integrating neurosurgery with intraoperative-MRI has presented technical challenges involving the scanner and ancillary equipment. In the past few years, ..."
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he procedure, to enable monitoring of therapy, precise guidance for biopsies, and tracking of anatomical changes as surgical resection progresses. Integrating neurosurgery with intraoperative-MRI has presented technical challenges involving the scanner and ancillary equipment. In the past few years, many challenges have been met. The foundation now exists that will allow this new discipline to expand the limits of neurosurgery. Keywords: Image guided surgery; Magnetic resonance imaging; MRI; Intra-operative; Intraoperative; Interventional; Stereotactic; Brain tumor # Corresponding author. Director of MRI/CT/MRT/Radiology Research, 75 Francis Street, Brigham and Women's Hospital, Boston, MA 02115. e-mail: jolesz@bwh.harvard.edu 89 90 D. F. KACHER et al. MOTIVATION FOR INTRAOPERATIVE MRI Introduction Historically, neurosurgeons have applied intraoperative fluoroscopy [1, 2] and ultrasound [3--5] as a surgical tool to loc
Histopathologic Images to in Vivo MR Images Acquired by Using Endorectal Receive Coil1
"... Note: This copy is for your personal non-commercial use only. To order presentation-ready copies for distribution to your colleagues or clients, contact us at www.rsna.org/rsnarights. ..."
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Note: This copy is for your personal non-commercial use only. To order presentation-ready copies for distribution to your colleagues or clients, contact us at www.rsna.org/rsnarights.
Applied Magnetic Resonance Current CONtrolled Transmit And Receive Coil Elements (C 2 ONTAR) for Parallel Acquisition and Parallel Excitation Techniques at High-Field MRI
"... Ó The Author(s) 2011. This article is published with open access at Springerlink.com Abstract A novel intrinsically decoupled transmit and receive radio-frequency coil element is presented for applications in parallel imaging and parallel excitation techniques in high-field magnetic resonance imagin ..."
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Ó The Author(s) 2011. This article is published with open access at Springerlink.com Abstract A novel intrinsically decoupled transmit and receive radio-frequency coil element is presented for applications in parallel imaging and parallel excitation techniques in high-field magnetic resonance
Coil sensitivity encoding for fast MRI. In:
- Proceedings of the ISMRM 6th Annual Meeting,
, 1998
"... New theoretical and practical concepts are presented for considerably enhancing the performance of magnetic resonance imaging (MRI) by means of arrays of multiple receiver coils. Sensitivity encoding (SENSE) is based on the fact that receiver sensitivity generally has an encoding effect complementa ..."
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Cited by 193 (3 self)
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New theoretical and practical concepts are presented for considerably enhancing the performance of magnetic resonance imaging (MRI) by means of arrays of multiple receiver coils. Sensitivity encoding (SENSE) is based on the fact that receiver sensitivity generally has an encoding effect
Detachable Coils
"... vices stems from the potential for time-varying magnetic fields to induce current flow in a con-ductor if sufficient voltage is present relative to the resistance of the conductor, and the heat thus generated poses at least a theoretical threat to surrounding tissue. Although the risk Heat Productio ..."
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Production The Guglielmi detachable coils were placed in 2 mL of saline solution within a capped glass vial (internal diame-ter of 1.1 cm) and imaged using a radio frequency trans-mit-receive coil specifically designed for head imaging.
fMRI COIL BUILDING AND QUANTIFICATION By
, 2013
"... This work focused on research conducted in the Biophysics Department at the Medical College of Wisconsin, where tools and techniques for functional Magnetic Resonance Imaging (fMRI) were studied. Various tribulations took place to understand the fundamentals and concepts in fMRI. In fMRI, there are ..."
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MRI, there are many components to take into consideration and the ones studied in this research were transmit and receive coils. In the study, a receive coil was simulated, designed and created to obtain the signal response for a site-specific area of a brain, primary somatosensory cortex, forelimb region. Bench
Transmit/Receive Surface Coil for Functional
"... Purpose: To design and evaluate a four-channel cardiac transceiver coil array for functional cardiac imaging at 7T. Materials and Methods: A four-element cardiac trans-ceiver surface coil array was developed with two rectangu-lar loops mounted on an anterior former and two rectan-gular loops on a po ..."
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Purpose: To design and evaluate a four-channel cardiac transceiver coil array for functional cardiac imaging at 7T. Materials and Methods: A four-element cardiac trans-ceiver surface coil array was developed with two rectangu-lar loops mounted on an anterior former and two rectan-gular loops on a
Sensitivity profiles from an array of coils for encoding and reconstruction
- in parallel (SPACE RIP),” Magnetic Resonance in Medicine
, 2000
"... A new parallel imaging technique was implemented which can result in reduced image acquisition times in MRI. MR data is acquired in parallel using an array of receiver coils and then reconstructed simultaneously with multiple processors. The method requires the initial estimation of the 2D sensitiv ..."
Abstract
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Cited by 17 (2 self)
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A new parallel imaging technique was implemented which can result in reduced image acquisition times in MRI. MR data is acquired in parallel using an array of receiver coils and then reconstructed simultaneously with multiple processors. The method requires the initial estimation of the 2D
Superconducting MR Surface Coils for Human Imaging
"... It was previously believed that a substantial gain in signal-to-noise ratio (SNR) of MRI images could be obtained by high temperature superconducting (HTS) RF receiver coils only at low frequency and low field (<20 MHz ..."
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It was previously believed that a substantial gain in signal-to-noise ratio (SNR) of MRI images could be obtained by high temperature superconducting (HTS) RF receiver coils only at low frequency and low field (<20 MHz
Sensitivity Study for Improved Magnetic Induction Tomography (MIT) Coil System
"... Abstract-The improved magnetic induction tomography (MIT) coil system which consists of the two-arm Archimedean spiral coil (TAASC) as excitation coil and the solenoid as receiver coil has much better performance in coil system sensitivity than the conventional MIT coil system which uses the soleno ..."
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Abstract-The improved magnetic induction tomography (MIT) coil system which consists of the two-arm Archimedean spiral coil (TAASC) as excitation coil and the solenoid as receiver coil has much better performance in coil system sensitivity than the conventional MIT coil system which uses
Results 11 - 20
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496