Attenuation coefficients of various body tissues, fluids, and lesions at photon energies of 18 to 136 keV.
Identifieur interne : 000C23 ( Ncbi/Merge ); précédent : 000C22; suivant : 000C24Attenuation coefficients of various body tissues, fluids, and lesions at photon energies of 18 to 136 keV.
Auteurs : M E Phelps ; E J Hoffman ; M M Ter-PogossianSource :
- Radiology [ 0033-8419 ] ; 1975.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- Americium, Animals, Brain Neoplasms (radiography), Cerebrospinal Fluid (radiography), Cobalt Radioisotopes, Computers, Erythrocytes (radiography), Gadolinium, Haplorhini, Humans, Iodine Radioisotopes, Macaca mulatta, Plasma (radiography), Radioisotopes, Radionuclide Imaging, Thulium, Tomography, X-Ray.
- MESH :
- chemical : Americium, Cobalt Radioisotopes, Gadolinium, Iodine Radioisotopes, Radioisotopes, Thulium.
- radiography : Brain Neoplasms, Cerebrospinal Fluid, Erythrocytes, Plasma.
- Animals, Computers, Haplorhini, Humans, Macaca mulatta, Radionuclide Imaging, Tomography, X-Ray.
Abstract
Radioactive sources of 241Am, 125I, 153Gd, 170Tm, and 57Co were used to measure the attenuation coefficient muL of various body tissues (gray and white matter, fat, liver, pancreas, and muscle), fluids (water, cerebrospinal fluid, plasma, and red blood cells), and cerebral lesions (blood clots, edematous brain tissue, and eight types of brain tumors) at 16 different energies in the range 18-136 keV. Experimental accuracy was about 0.1-0.3% and 0.2-0.4% in the energy ranges 18-60 keV and 60-136 keV, respectively. Comparisons with values determined in vivo and in vitro with an EMI scanner showed excellent agreement. It is hoped that these findings will provide a better understanding of the photon interactions at the sensitivity level of computed tomography.
DOI: 10.1148/117.3.573
PubMed: 810827
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Experimental accuracy was about 0.1-0.3% and 0.2-0.4% in the energy ranges 18-60 keV and 60-136 keV, respectively. Comparisons with values determined in vivo and in vitro with an EMI scanner showed excellent agreement. It is hoped that these findings will provide a better understanding of the photon interactions at the sensitivity level of computed tomography.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">810827</PMID><DateCreated><Year>1976</Year><Month>01</Month><Day>16</Day></DateCreated><DateCompleted><Year>1976</Year><Month>01</Month><Day>16</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0033-8419</ISSN><JournalIssue CitedMedium="Print"><Volume>117</Volume><Issue>3 Pt 1</Issue><PubDate><Year>1975</Year><Month>Dec</Month></PubDate></JournalIssue><Title>Radiology</Title><ISOAbbreviation>Radiology</ISOAbbreviation></Journal><ArticleTitle>Attenuation coefficients of various body tissues, fluids, and lesions at photon energies of 18 to 136 keV.</ArticleTitle><Pagination><MedlinePgn>573-83</MedlinePgn></Pagination><Abstract><AbstractText>Radioactive sources of 241Am, 125I, 153Gd, 170Tm, and 57Co were used to measure the attenuation coefficient muL of various body tissues (gray and white matter, fat, liver, pancreas, and muscle), fluids (water, cerebrospinal fluid, plasma, and red blood cells), and cerebral lesions (blood clots, edematous brain tissue, and eight types of brain tumors) at 16 different energies in the range 18-136 keV. Experimental accuracy was about 0.1-0.3% and 0.2-0.4% in the energy ranges 18-60 keV and 60-136 keV, respectively. Comparisons with values determined in vivo and in vitro with an EMI scanner showed excellent agreement. It is hoped that these findings will provide a better understanding of the photon interactions at the sensitivity level of computed tomography.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Phelps</LastName><ForeName>M E</ForeName><Initials>ME</Initials></Author><Author ValidYN="Y"><LastName>Hoffman</LastName><ForeName>E J</ForeName><Initials>EJ</Initials></Author><Author ValidYN="Y"><LastName>Ter-Pogossian</LastName><ForeName>M M</ForeName><Initials>MM</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013487">Research Support, U.S. Gov't, P.H.S.</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>UNITED STATES</Country><MedlineTA>Radiology</MedlineTA><NlmUniqueID>0401260</NlmUniqueID><ISSNLinking>0033-8419</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D003037">Cobalt Radioisotopes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D007457">Iodine Radioisotopes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D011868">Radioisotopes</NameOfSubstance></Chemical><Chemical><RegistryNumber>8RKC5ATI4P</RegistryNumber><NameOfSubstance UI="D013932">Thulium</NameOfSubstance></Chemical><Chemical><RegistryNumber>AU0V1LM3JT</RegistryNumber><NameOfSubstance UI="D005682">Gadolinium</NameOfSubstance></Chemical><Chemical><RegistryNumber>VW92PHU2UY</RegistryNumber><NameOfSubstance UI="D000576">Americium</NameOfSubstance></Chemical></ChemicalList><CitationSubset>AIM</CitationSubset><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000576">Americium</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000818">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D001932">Brain Neoplasms</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000530">radiography</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D002555">Cerebrospinal Fluid</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000530">radiography</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D003037">Cobalt Radioisotopes</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D003201">Computers</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D004912">Erythrocytes</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000530">radiography</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005682">Gadolinium</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000882">Haplorhini</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D007457">Iodine Radioisotopes</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008253">Macaca mulatta</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D010949">Plasma</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000530">radiography</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011868">Radioisotopes</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D011877">Radionuclide Imaging</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D013932">Thulium</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D014056">Tomography, X-Ray</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1975</Year><Month>12</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1975</Year><Month>12</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1975</Year><Month>12</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">810827</ArticleId><ArticleId IdType="doi">10.1148/117.3.573</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list></list><tree><noCountry><name sortKey="Hoffman, E J" sort="Hoffman, E J" uniqKey="Hoffman E" first="E J" last="Hoffman">E J Hoffman</name><name sortKey="Phelps, M E" sort="Phelps, M E" uniqKey="Phelps M" first="M E" last="Phelps">M E Phelps</name><name sortKey="Ter Pogossian, M M" sort="Ter Pogossian, M M" uniqKey="Ter Pogossian M" first="M M" last="Ter-Pogossian">M M Ter-Pogossian</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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