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Volume 48 (2008)
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- Issue 2 Pages 13-
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Volume 48, Issue 2
Displaying 1-5 of 5 articles from this issue
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—A study of CD34+ cells and CD71+ cells—Kohtarou Fujimaki, Daigo Satoh, Takashi Yosue2008 Volume 48 Issue 2 Pages 13-18
Published: 2008
Released on J-STAGE: January 21, 2009
JOURNAL FREE ACCESSThis study was to investigate the difference in influence on hematopoietic stem cells between the local irradiation (10Gy) to a portion of the maxilla and whole body irradiation (0.5, 1, 4 Gy, respectively) , in particular focusing on the CD34+ cells (hematopoietic stem cells) and CD71+ cells (cell that express transferrin receptor) in mice. We analyzed the absolute number of the lymphocytes, T cells, B cells, CD34+ cells and CD71+ cells in the spleen by using flow cytometry after the irradiation.
The following results were obtained: 1. In each whole-body irradiation group, B cells showed decrease at the early stage after irradiation. However, B cell recovered earlier than T cell, and showed increase compared with non-irradiation groups thereafter. CD34+ cells showed decrease at the early stage after irradiation. However CD34+ cells showed increase compared with non-irradiation groups thereafter. Moreover, CD71+ cells showed a similar result with CD34+ cells. 2. In the local irradiation groups, B cells recovered at the early stage after irradiation compared with T cells. B cells did not show any significant changes after irradiation, and CD71+ cells showed decrease at the early stage after irradiation. These results indicated that the number of lymphocytes recovers because of an increase of CD34+ cells (hematopoietic stem Cell) and CD71+ cells in whole-body irradiation group. On the other hand, it was suggested that the number of lymphocytes recovered even if neither CD34+ cells nor CD71+ cells increased in the local irradiation groups.View full abstractDownload PDF (687K)
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Minori Nojiri, Akitoshi Katsumata, Masami Fujishita2008 Volume 48 Issue 2 Pages 19-23
Published: 2008
Released on J-STAGE: January 21, 2009
JOURNAL FREE ACCESSA case of temporomandibular joint (TMJ) disorder demonstrated a remarkable osseous deformity 6 months after arthroscopic lysis and lavage surgery. The patient was a 39-year-old female who complained of pain in the bilateral TMJ and restriction of mouth opening. Magnetic resonance imaging (MRI) findings showed bilateral joint effusions and anterior displacement of the disc without reduction. Arthrography of the TMJ showed extensive adhesion of the right upper joint cavity.
Six months postoperatively, MR images showed a low signal intensity in the right condyle head. However, there was no distinct osseous deformity on plain radiograph at that time. CT examination performed 8 months postoperatively, demonstrated remarkable bony deformity and a pseudocyst-like lesion. MR imaging findings might be useful to predict subsequent degenerative osseous changes.View full abstractDownload PDF (528K) -
Two Cases with Marked Enhancing Effect of the Margin in Contrast-enhanced Magnetic Resonance ImagingComparison with Histopathological FindingsMasao Araki, Satoshi Nishimura, Teruhiko Ishii, Naoyuki Matsumoto, Kaz ...2008 Volume 48 Issue 2 Pages 24-29
Published: 2008
Released on J-STAGE: January 21, 2009
JOURNAL FREE ACCESSThis study compared magnetic resonance imaging (MRI) with histopathological findings in 2 cases which had focal defect-like findings on enhanced MRI, in order to elucidate the characteristics of such focal defects. We herein defined focal defect as a lesion with rim enhancement on MRI.
Case 1 was a 72-year-old woman with a chief complaint of induration on the tip of the tongue. ultrasonography (US) showed a well-circumscribed hypoechoic area with gross echogenicity, and Doppler US showed a strong blood flow signal. T1-weighted axial MRI showed low signal intensity, T2-weighted axial MRI showed moderately high intensity and gadolinium-enhanced T1-weighted axial MRI showed thin enhanced high intensity with markedly enhanced margin in the right tip of the tongue. Histopathological diagnosis was mucoepidermoid carcinoma.
Case 2 was a 26-year-old woman with a chief complaint of marked painless swelling in the left submandibular region. US showed a homogeneous hypoechoic mass with relatively smooth and well-defined margins in the left submandibular gland. T1-weighted axial MRI showed low signal intensity, T2-weighted axial MRI showed low signal intensity with heterogeneous moderate signal intensity and Gadolinium-enhanced T1-weighted axial MRI showed a focal defect with marked enhanced margins at the edge of the left submandibular gland. Enhanced computed tomography (CT) also showed a focal defect in the marginal region of the left submandibular gland. Histopathological diagnosis was pleomorphic adenoma.
The results suggest that the focal defect-like findings in these two lesions contained tumor substance surrounded by a rich vascular network. Hence the focal defect appeared different to the internal constituents for example necrosis, cyst, fibrosis, tumor tissue on MRI.View full abstractDownload PDF (1177K)
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Shintaro Mori, Takashi Kaneda, Masataka Kato, Masashi Sakayanagi, Miya ...2008 Volume 48 Issue 2 Pages 30-33
Published: 2008
Released on J-STAGE: January 21, 2009
JOURNAL FREE ACCESSPurpose: The filmless operation using Electronic Medical Recording (EMR) System is started at Nihon University Hospital, (school of dentistry at Matsudo) from April 2006. Recently, the medical hospital that introduces EMR system is increasing, however, our hospital operated it for the first time in the dento-maxillo-facial area in Japan. Especially, we tried the unprecedented experiment in the intraoral radiography. We report to the filmless operation of intraoral radiography by the EMR system.
Materials and methods: The modality used SCAN X® (Morita) and VISTASCAN® (Yoshida) as IP methods, and Compuray® (Yoshida) was used as CMOS sensor method. All intraoral method corresponded to HIS/RIS, MWM, and DICOM Storage for operation of EMR system, and all radiograms operated by filmless system.
Results: DICOM Storage to the PACS server was indispensable, and corresponding to MWM was important to smooth operation.In the use of a different modality, card reading system was useful for prevent to switched IP scanner.
Conclusion: The radiology information system is composed of the imaging modality, the workstation, the reporting system, and the PACS server. It was suggested that corresponding to the intraoral radiography is especially important by the filmless operation using EMR system in the dental hospital.View full abstractDownload PDF (553K)
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Yukiko Matsuda, Kazuyuki Araki, Tomohiro Okano2008 Volume 48 Issue 2 Pages 34-35
Published: 2008
Released on J-STAGE: January 21, 2009
JOURNAL FREE ACCESSDownload PDF (500K)
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