An Investigation of the Effect of Gamma Rays Emitted by Patients Undergoing Radionuclide Bone Scintigraphy in Computed Radiography during X-ray Mammography Examination
For convenience of outpatients, mammographies of outpatients are often taken after the injection of a radionuclide. In this study, we investigated the effects of gamma rays emitted by a patient onto imaging plates (IPs). We used a flat container filled with 99mTc solution as a planar source to irrad...
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Veröffentlicht in: | Japanese Journal of Radiological Technology 2010/03/20, Vol.66(3), pp.193-200 |
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creator | Kamigiri, Akira Nagasawa, Naoki Yamaji, Masami Nakamura, Mikako Ito, Morihiro Nakanishi, Satoshi Kitano, Tokio |
description | For convenience of outpatients, mammographies of outpatients are often taken after the injection of a radionuclide. In this study, we investigated the effects of gamma rays emitted by a patient onto imaging plates (IPs). We used a flat container filled with 99mTc solution as a planar source to irradiate gamma rays onto IPs. We changed irradiation times on each IP, and took radiographies of an ACR-specified 156 model phantom and AGH-D210F phantom. We evaluated radiography images, using visual evaluation, and profile curves, histograms, and CNR and RMS granularities analyses. The results indicated that the depiction ability of a fibrous part began to fall when the irradiation time exceeded 3 minutes. With an increase in irradiation time, an increase in pixel value and RMS granularity value and a decrease in CNR value were observed. In conclusion, IP exposed by gamma rays influenced the evaluation of phantom images. |
doi_str_mv | 10.6009/jjrt.66.193 |
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In this study, we investigated the effects of gamma rays emitted by a patient onto imaging plates (IPs). We used a flat container filled with 99mTc solution as a planar source to irradiate gamma rays onto IPs. We changed irradiation times on each IP, and took radiographies of an ACR-specified 156 model phantom and AGH-D210F phantom. We evaluated radiography images, using visual evaluation, and profile curves, histograms, and CNR and RMS granularities analyses. The results indicated that the depiction ability of a fibrous part began to fall when the irradiation time exceeded 3 minutes. With an increase in irradiation time, an increase in pixel value and RMS granularity value and a decrease in CNR value were observed. 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J. Radiol. Technol.</addtitle><description>For convenience of outpatients, mammographies of outpatients are often taken after the injection of a radionuclide. In this study, we investigated the effects of gamma rays emitted by a patient onto imaging plates (IPs). We used a flat container filled with 99mTc solution as a planar source to irradiate gamma rays onto IPs. We changed irradiation times on each IP, and took radiographies of an ACR-specified 156 model phantom and AGH-D210F phantom. We evaluated radiography images, using visual evaluation, and profile curves, histograms, and CNR and RMS granularities analyses. The results indicated that the depiction ability of a fibrous part began to fall when the irradiation time exceeded 3 minutes. With an increase in irradiation time, an increase in pixel value and RMS granularity value and a decrease in CNR value were observed. In conclusion, IP exposed by gamma rays influenced the evaluation of phantom images.</description><subject>Bone and Bones - diagnostic imaging</subject><subject>bone scintigraphy</subject><subject>Gamma Rays</subject><subject>imaging plate (IP)</subject><subject>Mammography</subject><subject>Phantoms, Imaging</subject><subject>Radionuclide Imaging</subject><subject>Tomography, X-Ray Computed</subject><issn>0369-4305</issn><issn>1881-4883</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kUFv2yAUx9G0aY3annafuO0wOQNjY7iti9KuUqtV2yrtZmF4TohsnAGe5k_Ur1ncpLmAeO_H7yH-CH2gZMkJkV92Ox-XnC-pZG_QggpBs0II9hYtCOMyKxgpz9BlCLYhCU8lUrxHZzlhlSSlXKCnK4dv3T8I0W5UtIPDQ4vjFvC6bUHH-XSj-l7hn2oKeN3bGMHgZsIPiQYXA350BvxmsG6TGJMMo-6sAfxtcIB_aeuS2av9dsLW4dXQ78fZ8IIe62b08-0_mVcTvk_TXhvr_6q37uVZF-hdq7oAl8f9HD1er3-vvmd3P25uV1d3mc5FxTKmc5lXeWGoLBVphVLSGNVAWdGCQiMoZxQIVESUXPJSCw5t0xCghcx1BYydo08H794Pf8f0LXVvg4auUw6GMdQVY4ILUuSJ_HwgtR9C8NDWe2975aeaknrOpp6zqTmvUzaJ_nj0jk0P5sS-JpGArwdgF6LawAlQPlrdwUnGDktynlp6q3wNjj0D9n2kzQ</recordid><startdate>20100320</startdate><enddate>20100320</enddate><creator>Kamigiri, Akira</creator><creator>Nagasawa, Naoki</creator><creator>Yamaji, Masami</creator><creator>Nakamura, Mikako</creator><creator>Ito, Morihiro</creator><creator>Nakanishi, Satoshi</creator><creator>Kitano, Tokio</creator><general>Japanese Society of Radiological Technology</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20100320</creationdate><title>An Investigation of the Effect of Gamma Rays Emitted by Patients Undergoing Radionuclide Bone Scintigraphy in Computed Radiography during X-ray Mammography Examination</title><author>Kamigiri, Akira ; Nagasawa, Naoki ; Yamaji, Masami ; Nakamura, Mikako ; Ito, Morihiro ; Nakanishi, Satoshi ; Kitano, Tokio</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2873-3c292724d195a0f8aa9ddabe57141eb81631e0e70856965c86efbb0e1492c7e33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng ; jpn</language><creationdate>2010</creationdate><topic>Bone and Bones - diagnostic imaging</topic><topic>bone scintigraphy</topic><topic>Gamma Rays</topic><topic>imaging plate (IP)</topic><topic>Mammography</topic><topic>Phantoms, Imaging</topic><topic>Radionuclide Imaging</topic><topic>Tomography, X-Ray Computed</topic><toplevel>online_resources</toplevel><creatorcontrib>Kamigiri, Akira</creatorcontrib><creatorcontrib>Nagasawa, Naoki</creatorcontrib><creatorcontrib>Yamaji, Masami</creatorcontrib><creatorcontrib>Nakamura, Mikako</creatorcontrib><creatorcontrib>Ito, Morihiro</creatorcontrib><creatorcontrib>Nakanishi, Satoshi</creatorcontrib><creatorcontrib>Kitano, Tokio</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Japanese Journal of Radiological Technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kamigiri, Akira</au><au>Nagasawa, Naoki</au><au>Yamaji, Masami</au><au>Nakamura, Mikako</au><au>Ito, Morihiro</au><au>Nakanishi, Satoshi</au><au>Kitano, Tokio</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An Investigation of the Effect of Gamma Rays Emitted by Patients Undergoing Radionuclide Bone Scintigraphy in Computed Radiography during X-ray Mammography Examination</atitle><jtitle>Japanese Journal of Radiological Technology</jtitle><addtitle>Jpn. J. Radiol. Technol.</addtitle><date>2010-03-20</date><risdate>2010</risdate><volume>66</volume><issue>3</issue><spage>193</spage><epage>200</epage><pages>193-200</pages><issn>0369-4305</issn><eissn>1881-4883</eissn><abstract>For convenience of outpatients, mammographies of outpatients are often taken after the injection of a radionuclide. In this study, we investigated the effects of gamma rays emitted by a patient onto imaging plates (IPs). We used a flat container filled with 99mTc solution as a planar source to irradiate gamma rays onto IPs. We changed irradiation times on each IP, and took radiographies of an ACR-specified 156 model phantom and AGH-D210F phantom. We evaluated radiography images, using visual evaluation, and profile curves, histograms, and CNR and RMS granularities analyses. The results indicated that the depiction ability of a fibrous part began to fall when the irradiation time exceeded 3 minutes. 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subjects | Bone and Bones - diagnostic imaging bone scintigraphy Gamma Rays imaging plate (IP) Mammography Phantoms, Imaging Radionuclide Imaging Tomography, X-Ray Computed |
title | An Investigation of the Effect of Gamma Rays Emitted by Patients Undergoing Radionuclide Bone Scintigraphy in Computed Radiography during X-ray Mammography Examination |
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