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Abstract
Imaging of hard and soft tissue of the oral cavity is important for dentistry. However, medical computed tomography, cone beam computed tomography (CBCT), nor MRI enables soft and hard tissue imaging simultaneously. Some MRI sequences were shown to provide fast soft and hard tissue imaging of hydrogen, which increased the interest in dental MRI. Recently, MRI allowed direct visualization of cancellous bone, intraoral mucosa, and dental pulp despite that cortical bone and dental roots are indirectly visualized. MRI seems to be adequate for many indications that CBCT is currently used for: implant treatment and inflammatory diseases of the tooth.
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Affiliation(s)
- Husniye Demirturk Kocasarac
- Division of Oral and Maxillofacial Radiology, Department of Comprehensive Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA.
| | - Hassem Geha
- Division of Oral and Maxillofacial Radiology, Department of Comprehensive Dentistry, University of Texas Health San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - Laurence R Gaalaas
- Oral and Maxillofacial Radiology, Division of Oral Medicine, Diagnosis and Radiology, Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, 7-536 Moos Tower, 515 Delaware Street Southeast, Minneapolis, MN 55455, USA
| | - Donald R Nixdorf
- Division of TMD and Orofacial Pain, Department of Diagnostic and Biological Sciences, School of Dentistry, University of Minnesota, 6-320 Moos Tower, 515 Delaware Street SE, Minneapolis, MN 55455, USA
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Godeke A, Abraimov DV, Arroyo E, Barret N, Bird MD, Francis A, Jaroszynski J, Kurteva DV, Markiewicz WD, Marks EL, Marshall WS, McRae DM, Noyes PD, Pereira RCP, Viouchkov YL, Walsh RP, White JM. A Feasibility Study of High-Strength Bi-2223 Conductor for High-Field Solenoids. SUPERCONDUCTOR SCIENCE & TECHNOLOGY 2017; 30:035011. [PMID: 28360455 PMCID: PMC5367628 DOI: 10.1088/1361-6668/aa5582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We performed a feasibility study on a high-strength Bi2-x Pb x Sr2Ca2Cu3O10-x (Bi-2223) tape conductor for high-field solenoid applications. The investigated conductor, DI-BSCCO Type HT-XX, is a pre-production version of Type HT-NX, which has recently become available from Sumitomo Electric Industries (SEI). It is based on their DI-BSCCO Type H tape, but laminated with a high-strength Ni-alloy. We used stress-strain characterizations, single- and double-bend tests, easy- and hard-way bent coil-turns at various radii, straight and helical samples in up to 31.2 T background field, and small 20-turn coils in up to 17 T background field to systematically determine the electro-mechanical limits in magnet-relevant conditions. In longitudinal tensile tests at 77 K, we found critical stress- and strain-levels of 516 MPa and 0.57%, respectively. In three decidedly different experiments we detected an amplification of the allowable strain with a combination of pure bending and Lorentz loading to ≥ 0.92% (calculated elastically at the outer tape edge). This significant strain level, and the fact that it is multi-filamentary conductor and available in the reacted and insulated state, makes DI-BSCCO HT-NX highly suitable for very high-field solenoids, for which high current densities and therefore high loads are required to retain manageable magnet dimensions.
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Affiliation(s)
- A Godeke
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - D V Abraimov
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - E Arroyo
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - N Barret
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - M D Bird
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - A Francis
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - J Jaroszynski
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - D V Kurteva
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - W D Markiewicz
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - E L Marks
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - W S Marshall
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - D M McRae
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - P D Noyes
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - R C P Pereira
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - Y L Viouchkov
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - R P Walsh
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
| | - J M White
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 31310, USA,
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