Data acquisition system for MAET with magnetic field measurements.

08:00 EDT 10th April 2019 | BioPortfolio

Summary of "Data acquisition system for MAET with magnetic field measurements."

Magneto-Acousto-Electrical Tomography (MAET) is an imaging modality to image the electrical conductivity of biological tissues. It is based on electrical current induction by using ultrasound under a static magnetic field. The aim of this study is to develop a data acquisition system for MAET based on magnetic field measurements. The static magnetic field is generated by six permanent neodymium magnets. A 16-element linear phased array (LPA) transducer is utilized to generate acoustic pressure waves inside the phantom. To measure the magnetic field intensity generated by the induced currents, contactless receiver sensors are developed using two similar disk multiple layer coils as the Helmholtz coil sensor. Physical properties and electrical characteristics of the sensors are assessed. A two-stage cascaded amplifier is designed and utilized in the receiving system. The gain of the cascaded amplifier at 1 MHz is adjusted to be 96 dB. Experimental studies are conducted with two different phantoms having 3 S/m and 58 S/m electrical conductivity, respectively. A-scan and B-scan images of phantoms are obtained with the LPA transducer. Comparison of the ultrasound (A-scan) and MAET signals reveals that 3 S/m conductive inhomogeneity can be detected with this data acquisition system. Furthermore, the front and rear interfaces of an inhomogeneity (15.15 mm × 30 mm × 20 mm) of 58 S/m conductivity are detectable.


Journal Details

This article was published in the following journal.

Name: Physics in medicine and biology
ISSN: 1361-6560


DeepDyve research library

PubMed Articles [29671 Associated PubMed Articles listed on BioPortfolio]

A novel tool for time-locking study plans to results.

Often researchers wish to mark an objective line between study plans that were specified before data acquisition and decisions that were made following data exploration. Contrary to common perception,...

MR elastography at 1 Hz of gelatin phantoms using 3D or 4D acquisition.

Magnetic Resonance Elastography (MRE) detects induced periodic motions in biological tissues allowing maps of tissue mechanical properties to be derived. In-vivo MRE is commonly performed at frequenci...

The characterization of a large multi-axis ionization chamber array in a 1.5 T MRI linac.

By combining magnetic resonance imaging (MRI) scanners and radiotherapy treatment units the need arises for new radiation measurement equipment that can be used in the magnetic field of the MRI. This ...

Phosphine oxide ligand based tetrahedral Co(II) complexes with field-induced slow magnetic relaxation behaviours modified by terminal ligands.

Two isostructural mononuclear Co(II) complexes [Co(xantpo)(NCE)2] (E = S (1) and O (2); xantpo = 9,9-dimethyl-4,5-bis(diphenylphosphoryl) xanthene) supported by a bidentate phosphine oxide ligand are ...

Enhanced nonlinear magneto-optical rotation in cold atoms: A theoretical study.

We theoretically investigate magneto-optical rotation (MOR) of a linearly polarized probe field in the four-level N-type cold atoms. By applying a static magnetic field and a weak coupling field, it i...

Clinical Trials [11544 Associated Clinical Trials listed on BioPortfolio]

Evaluation of MRI Sequences for Ultra-rapid Acquisition of Bile Ducts Images

The Institute of Imaged-Guided Surgery (IHU Strasbourg) has two clinical Magnetic Resonance Imaging (MRI) scanners, one with a 3T (3 Teslas) magnetic field used for diagnosis, the other wi...

Magnetic Field Modulation Pillow for Insomnia Clinical Trial

This observational study was designed to explore the clinical effect of magnetic field modulation system on insomnia patients and provide a new solution for insomnia treatment.

Low Field Magnetic Stimulation: Imaging Biomarkers in Geriatric Bipolar Depression

The protocol involves functional Magnetic Resonance Imaging and Magnetic Resonance Spectroscopy acquisitions immediately before and after Low Field Magnetic Stimulation treatment on two se...

Evaluation of Magnetic Scope Navigation in Teaching and Acquisition of Colonoscopy Skills

Colonoscopy is widely considered as the main choice for patients with suspected colorectal disease,and for screening those at high risk of colorectal cancer. The increasing widespread use ...

Parameters Analysis in Neurosurgical Critical Patients Through Big Data Acquisition

The PANDA trial is a multicenter prospective observational study designed to analyze various ICP derived parameters and clinical status in neurosurgical critical patients through a new big...

Medical and Biotech [MESH] Definitions

Interconnected system that is used in the automatic acquisition, storage, manipulation, movement, control, display, interchange, transmission, routing or reception of data or information, including computers, ancillary equipment, system software, support services, and related resources. (NAL Agricultural Thesaurus)

Observation and aquisition of physical data from a distance by viewing and making measurements from a distance or receiving transmitted data from observations made at distant location.

Timing the acquisition of imaging data to specific points in the breathing cycle to minimize image blurring and other motion artifacts. The images are used diagnostically and also interventionally to coordinate radiation treatment beam on/off cycles to protect healthy tissues when they move into the beam field during different times in the breathing cycle.

A field of biology concerned with the development of techniques for the collection and manipulation of biological data, and the use of such data to make biological discoveries or predictions. This field encompasses all computational methods and theories applicable to MOLECULAR BIOLOGY and areas of computer-based techniques for solving biological problems including manipulation of models and datasets.

The field of information science concerned with the analysis and dissemination of data through the application of computers applied to the field of nursing.

Quick Search


DeepDyve research library

Relevant Topics

Mergers & Acquisitions
Commercial and market reports on mergers and acquisitions in the biotechnology, pharmaceutical, medical device and life-science industries. Mergers and acquisitions (abbreviated M&A;) is an aspect of corporate strategy, corporate finance and manageme...

Biological Therapy
Biological therapy involves the use of living organisms, substances derived from living organisms, or laboratory-produced versions of such substances to treat disease. Some biological therapies for cancer use vaccines or bacteria to stimulate the body&rs...

Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...

Searches Linking to this Article