High-sensitivity coil array for head and neck imaging: technical note.
نویسندگان
چکیده
The purpose of this study was to develop coils for MR imaging of the head and neck region, with the aim of improving sensitivity and coverage. A head and neck phased array coil was constructed and compared with volume and temporomandibular joint surface coils for sensitivity and coverage in phantom studies. An algorithm was implemented to correct for the nonuniformity in the surface coil reception profile. Its application to high-resolution T2-weighted imaging in healthy volunteers was investigated.
منابع مشابه
Non-uniformity of Clinical Head, Head and Neck, and Body Coils in Magnetic Resonance Imaging (MRI)
Introduction Signal intensity uniformity in a magnetic resonance (MR) image indicates how well the MR imaging (MRI) system represents an object. One of the major sources of image non-uniformity in high-field MRI scanners is inhomogeneity of radio-frequency coil. The aim of this study was to investigate non-uniformity in head, head and neck, and body coils and compare the obtained results to det...
متن کاملAssessment of the Characteristics of MRI Coils in Terms of RF Non-Homogeneity Using Routine Spin Echo Sequences
Introduction: One of the major causes of image non-uniformity in MRI is due to the existence of non-homogeneity in RF receive and transmit. This can be the most effective source of error in quantitative studies in MRI imaging. Part of this non-homogeneity demonstrates the characteristics of RF coil and part of it is due to the interaction of RF field with the material being imaged...
متن کاملA 32 Channel receive-only 3T array optimized for brain and cervical spine imaging
Introduction: Simultaneous imaging of the brain and cervical spinal cord is integral to the study of pathologies involving both structures such as multiple sclerosis. Imaging the spinal cord is challenging due to its small size (~1cm diameter) and the presence of large B0 inhomogeneities that result in severe image distortions in diffusion-weighted and functional MRI acquisitions. These issues ...
متن کاملDevelopment of a Receiver Coil Array for 2D Accelerated Imaging of the Complete Neurovascular System
Introduction Two-dimensional accelerated imaging [1] with acceleration factors as high as R = 8 has been applied successfully in contrastenhanced MR angiography (CE-MRA) of the brain [2, 3] and calves [4]. A key element of this implementation has been the use of multielement receiver coils which are designed for the targeted anatomic region. Multi-element coils for brain MRI are available on co...
متن کاملA 32-channel Receive Array Coil for Pediatric Brain Imaging at 3T
Introduction: Pediatric MRI currently requires general anesthesia to preclude motion artifacts. With highly accelerated image encoding in conjunction motion navigators it may be possible to significantly reduce or even eliminate anesthesia. For research studies of brain development where anesthesia is not possible, improved motion robustness can significantly improve the success rate. Highly pa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- AJNR. American journal of neuroradiology
دوره 22 10 شماره
صفحات -
تاریخ انتشار 2001