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Sato E, Yoshida S, Takeda K, Yoshida R, Sato Y, Yoshioka K, Moriyama H, Hagiwara O, Matsukiyo H, Enomoto T, Watanabe M. Whole cancer-region enhancement using meglumine-gadopentetate-glucose solution and 7.0-T magnetic resonance imaging. Magn Reson Imaging 2021; 81:10-16. [PMID: 33901583 DOI: 10.1016/j.mri.2021.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 03/22/2021] [Accepted: 04/21/2021] [Indexed: 11/25/2022]
Abstract
To visualize whole cancerous region including hypoxic cancer without radiation exposure, we developed meglumine-gadopentetate-glucose solution for 7.0-T magnetic resonance imaging. The infusion solution consists of meglumine-gadopentetate and glucose solutions, and these solutions are mixed before the vein drip infusion. We used readily available solutions, and the concentrations of the meglumine-gadopentetate and glucose solutions were 37.14 and 5.0%, respectively. In the first and second experiments, vein infusions were conducted from a rabbit ear using meglumine-gadopentetate-saline and meglumine-gadopentetate-glucose solutions, and T1 weighted imaging was performed to visualize cancerous region. Using the meglumine-gadopentetate saline, it was not difficult to image cancer-growth regions with new blood vessels. Using the meglumine-gadopentetate-glucose solution, the signal intensity of whole cancerous region including hypoxic cancer substantially increased. The visualizing duration for the meglumine gadopentetate glucose was beyond 90 min, and the rabbit survived after the infusion. The signal intensity in the hypoxic cancer was increasing until 90 min using the meglumine-gadopentetate-glucose solution, since the meglumine-gadopentetate molecules were absorbed into almost the whole cancerous region along with glucose-molecule flows.
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Affiliation(s)
- Eiichi Sato
- Department of Physics, Iwate Medical University, 1-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan.
| | - Sohei Yoshida
- Department of Radiology, School of Medicine, Iwate Medical University, 2-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan
| | - Kota Takeda
- Central Radiation Department, Iwate Medical University Hospital, 2-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan
| | - Ryoko Yoshida
- Department of Physics, Iwate Medical University, 1-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan
| | - Yuichi Sato
- Central Radiation Department, Iwate Medical University Hospital, 2-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan
| | - Kunihiro Yoshioka
- Department of Radiology, School of Medicine, Iwate Medical University, 2-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan
| | - Hodaka Moriyama
- Department of Surgery, Toho University Ohashi Medical Center, 2-22-36 Ohashi, Meguro, Tokyo 153-8515, Japan
| | - Osahiko Hagiwara
- Department of Surgery, Toho University Ohashi Medical Center, 2-22-36 Ohashi, Meguro, Tokyo 153-8515, Japan
| | - Hiroshi Matsukiyo
- Department of Surgery, Toho University Ohashi Medical Center, 2-22-36 Ohashi, Meguro, Tokyo 153-8515, Japan
| | - Toshiyuki Enomoto
- Department of Surgery, Toho University Ohashi Medical Center, 2-22-36 Ohashi, Meguro, Tokyo 153-8515, Japan
| | - Manabu Watanabe
- Department of Surgery, Toho University Ohashi Medical Center, 2-22-36 Ohashi, Meguro, Tokyo 153-8515, Japan
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Sato E, Oda Y, Yoshida S, Yoshioka K, Moriyama H, Watanabe M. Near-infrared-ray computed tomography with an 808 nm laser beam and high spatial resolutions. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:013702. [PMID: 33514199 DOI: 10.1063/5.0018976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
To increase the penetrating photons and to improve the spatial resolution in near-infrared-ray computed tomography (NIR-CT), we used an 808 nm laser module. The NIR photons are produced from the laser module, and an object is exposed to the laser beam. The laser power is controlled by the applied voltage, and the photodiode detects photons penetrating through the object. To reduce scattering photons from the object, a 1.0-mm-diameter graphite pinhole is set behind the object. The spatial resolutions were improved using a 1.0-mm-diameter 5.0-mm-length graphite collimator and were ∼1 × 1 mm2. The NIR-CT was accomplished by repeating the object-reciprocating translations and rotations of the object using the turntable, and the ray-sampling-translation and rotation steps were 0.1 mm and 0.5°, respectively. The scanning time was 19.6 min at a total rotation angle of 180°. Triple-sensitivity CT was accomplished using amplifiers, and a graphite rod in the chicken fillet was visible when increasing amplification factor.
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Affiliation(s)
- Eiichi Sato
- Department of Physics, Iwate Medical University, 1-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan
| | - Yasuyuki Oda
- Department of Physics, Iwate Medical University, 1-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan
| | - Sohei Yoshida
- Department of Radiology, School of Medicine, Iwate Medical University, 2-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan
| | - Kunihiro Yoshioka
- Department of Radiology, School of Medicine, Iwate Medical University, 2-1-1 Idaidori, Yahaba, Iwate 028-3694, Japan
| | - Hodaka Moriyama
- Department of Surgery, Toho University Ohashi Medical Center, 2-22-36 Ohashi, Meguro, Tokyo 153-8515, Japan
| | - Manabu Watanabe
- Department of Surgery, Toho University Ohashi Medical Center, 2-22-36 Ohashi, Meguro, Tokyo 153-8515, Japan
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Yoshida S, Sato E, Oda Y, Yoshioka K, Moriyama H, Watanabe M. Triple-sensitivity high-spatial-resolution X-ray computed tomography using a cadmium-telluride detector and its beam-hardening effect. Appl Radiat Isot 2020; 159:109089. [DOI: 10.1016/j.apradiso.2020.109089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 12/26/2019] [Accepted: 02/19/2020] [Indexed: 11/15/2022]
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Moriyama H, Watanabe M, Kusachi S, Oda Y, Sato E. Low-dose low-scattering X-ray computed tomography with high-spatial-energy resolutions using a cooled cadmium telluride detector. Ultramicroscopy 2019; 199:62-69. [DOI: 10.1016/j.ultramic.2019.01.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/09/2019] [Accepted: 01/20/2019] [Indexed: 10/27/2022]
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Sato T, Sato E, Oda Y, Sato Y, Yamaguchi S, Hagiwara O, Yoshida S, Matsukiyo H, Enomoto T, Watanabe M, Kusachi S. Dual-energy high-count-rate X-ray computed tomography scanner using a cerium-doped yttrium aluminum perovskite crystal and a small-photomultiplier tube. HEALTH AND TECHNOLOGY 2018. [DOI: 10.1007/s12553-018-0234-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Sato Y, Takaoka A, Sato T, Sato E, Oda Y, Yoshida S, Moriyama H, Hagiwara O, Matsukiyo H, Enomoto T, Watanabe M, Kusachi S. 850-nm-peak high-sensitivity near-infrared-ray computed tomography scanner in the living-body window. HEALTH AND TECHNOLOGY 2018. [DOI: 10.1007/s12553-018-0237-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Sato E, Oda Y, Ishii T, Hagiwara O, Matsukiyo H, Enomoto T, Watanabe M, Kusachi S. Brief measurement of X-ray spectra using a lutetium-yttrium-oxyorthosilicate crystal and a micro-photomultiplier tube. RADIAT MEAS 2017. [DOI: 10.1016/j.radmeas.2017.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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