Linear unsharp mask filtering of linear cross-sectional tomograms of the posterior mandible.
Identifieur interne : 003691 ( PubMed/Checkpoint ); précédent : 003690; suivant : 003692Linear unsharp mask filtering of linear cross-sectional tomograms of the posterior mandible.
Auteurs : S K Chen [États-Unis] ; L. HollenderSource :
- Swedish dental journal [ 0347-9994 ] ; 1995.
Descripteurs français
- KwdFr :
- Adulte d'âge moyen, Algorithmes, Amélioration d'image radiographique (), Femelle, Humains, Mandibule (imagerie diagnostique), Mâchoire édentée (imagerie diagnostique), Mâle, Sujet âgé, Sujet âgé de 80 ans ou plus, Technique de soustraction, Tomographie à rayons X (), Traitement d'image par ordinateur (), Traitement du signal assisté par ordinateur.
- MESH :
- imagerie diagnostique : Mandibule, Mâchoire édentée.
- Adulte d'âge moyen, Algorithmes, Amélioration d'image radiographique, Femelle, Humains, Mâle, Sujet âgé, Sujet âgé de 80 ans ou plus, Technique de soustraction, Tomographie à rayons X, Traitement d'image par ordinateur, Traitement du signal assisté par ordinateur.
English descriptors
- KwdEn :
- Aged, Aged, 80 and over, Algorithms, Female, Humans, Image Processing, Computer-Assisted (methods), Jaw, Edentulous (diagnostic imaging), Male, Mandible (diagnostic imaging), Middle Aged, Radiographic Image Enhancement (methods), Signal Processing, Computer-Assisted, Subtraction Technique, Tomography, X-Ray (methods).
- MESH :
- diagnostic imaging : Jaw, Edentulous, Mandible.
- methods : Image Processing, Computer-Assisted, Radiographic Image Enhancement, Tomography, X-Ray.
- Aged, Aged, 80 and over, Algorithms, Female, Humans, Male, Middle Aged, Signal Processing, Computer-Assisted, Subtraction Technique.
Abstract
Linear unsharp mask filtering is a digital image processing technique which can enhance diagnostic information by subtracting from the original image the linear blur which was formed in the direction of the linear tomographic movement. It was applied to linear cross-sectional tomograms of the posterior mandible aiming at retrieving cross-sectional outline information. This study demonstrated that the current Orthophos Program 16 with a 6.72 degrees tomographic angle does not provide accurate cross-sectional outline information of the posterior mandible. Linear unsharp mask filtering of these images also failed to provide more information. A larger tomographic angle of 10 degrees was employed with the Polytome to simulate the modified Program 16 with a wider beam. The resulting tomographic images showed better defined cross-sectional outlines, and after the linear unsharp mask filtering, the outlines were more readily retrieved. In order to get cross-sectional outline information of the posterior mandible, the tomographic angle of the Orthophos program 16 should be increased to more than 10 degrees which can be achieved by increasing the width of the x-ray beam.
PubMed: 8560397
Affiliations:
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pubmed:8560397Le document en format XML
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Hollender</name></author></analytic><series><title level="j">Swedish dental journal</title><idno type="ISSN">0347-9994</idno><imprint><date when="1995" type="published">1995</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Algorithms</term><term>Female</term><term>Humans</term><term>Image Processing, Computer-Assisted (methods)</term><term>Jaw, Edentulous (diagnostic imaging)</term><term>Male</term><term>Mandible (diagnostic imaging)</term><term>Middle Aged</term><term>Radiographic Image Enhancement (methods)</term><term>Signal Processing, Computer-Assisted</term><term>Subtraction Technique</term><term>Tomography, X-Ray (methods)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Adulte d'âge moyen</term><term>Algorithmes</term><term>Amélioration d'image radiographique ()</term><term>Femelle</term><term>Humains</term><term>Mandibule (imagerie diagnostique)</term><term>Mâchoire édentée (imagerie diagnostique)</term><term>Mâle</term><term>Sujet âgé</term><term>Sujet âgé de 80 ans ou plus</term><term>Technique de soustraction</term><term>Tomographie à rayons X ()</term><term>Traitement d'image par ordinateur ()</term><term>Traitement du signal assisté par ordinateur</term></keywords><keywords scheme="MESH" qualifier="diagnostic imaging" xml:lang="en"><term>Jaw, Edentulous</term><term>Mandible</term></keywords><keywords scheme="MESH" qualifier="imagerie diagnostique" xml:lang="fr"><term>Mandibule</term><term>Mâchoire édentée</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Image Processing, Computer-Assisted</term><term>Radiographic Image Enhancement</term><term>Tomography, X-Ray</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Aged, 80 and over</term><term>Algorithms</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Signal Processing, Computer-Assisted</term><term>Subtraction Technique</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Adulte d'âge moyen</term><term>Algorithmes</term><term>Amélioration d'image radiographique</term><term>Femelle</term><term>Humains</term><term>Mâle</term><term>Sujet âgé</term><term>Sujet âgé de 80 ans ou plus</term><term>Technique de soustraction</term><term>Tomographie à rayons X</term><term>Traitement d'image par ordinateur</term><term>Traitement du signal assisté par ordinateur</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Linear unsharp mask filtering is a digital image processing technique which can enhance diagnostic information by subtracting from the original image the linear blur which was formed in the direction of the linear tomographic movement. It was applied to linear cross-sectional tomograms of the posterior mandible aiming at retrieving cross-sectional outline information. This study demonstrated that the current Orthophos Program 16 with a 6.72 degrees tomographic angle does not provide accurate cross-sectional outline information of the posterior mandible. Linear unsharp mask filtering of these images also failed to provide more information. A larger tomographic angle of 10 degrees was employed with the Polytome to simulate the modified Program 16 with a wider beam. The resulting tomographic images showed better defined cross-sectional outlines, and after the linear unsharp mask filtering, the outlines were more readily retrieved. In order to get cross-sectional outline information of the posterior mandible, the tomographic angle of the Orthophos program 16 should be increased to more than 10 degrees which can be achieved by increasing the width of the x-ray beam.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">8560397</PMID><DateCompleted><Year>1996</Year><Month>02</Month><Day>23</Day></DateCompleted><DateRevised><Year>2016</Year><Month>11</Month><Day>23</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0347-9994</ISSN><JournalIssue CitedMedium="Print"><Volume>19</Volume><Issue>4</Issue><PubDate><Year>1995</Year></PubDate></JournalIssue><Title>Swedish dental journal</Title><ISOAbbreviation>Swed Dent J</ISOAbbreviation></Journal><ArticleTitle>Linear unsharp mask filtering of linear cross-sectional tomograms of the posterior mandible.</ArticleTitle><Pagination><MedlinePgn>139-47</MedlinePgn></Pagination><Abstract><AbstractText>Linear unsharp mask filtering is a digital image processing technique which can enhance diagnostic information by subtracting from the original image the linear blur which was formed in the direction of the linear tomographic movement. It was applied to linear cross-sectional tomograms of the posterior mandible aiming at retrieving cross-sectional outline information. This study demonstrated that the current Orthophos Program 16 with a 6.72 degrees tomographic angle does not provide accurate cross-sectional outline information of the posterior mandible. Linear unsharp mask filtering of these images also failed to provide more information. A larger tomographic angle of 10 degrees was employed with the Polytome to simulate the modified Program 16 with a wider beam. The resulting tomographic images showed better defined cross-sectional outlines, and after the linear unsharp mask filtering, the outlines were more readily retrieved. In order to get cross-sectional outline information of the posterior mandible, the tomographic angle of the Orthophos program 16 should be increased to more than 10 degrees which can be achieved by increasing the width of the x-ray beam.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Chen</LastName><ForeName>S K</ForeName><Initials>SK</Initials><AffiliationInfo><Affiliation>Department of Oral Medicine, School of Dentistry, University of Washington, Seattle, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hollender</LastName><ForeName>L</ForeName><Initials>L</Initials></Author></AuthorList><Language>eng</Language><GrantList CompleteYN="Y"><Grant><GrantID>1 R03 DE10384-01</GrantID><Acronym>DE</Acronym><Agency>NIDCR NIH HHS</Agency><Country>United States</Country></Grant></GrantList><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType><PublicationType UI="D013487">Research Support, U.S. Gov't, P.H.S.</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Sweden</Country><MedlineTA>Swed Dent J</MedlineTA><NlmUniqueID>7706129</NlmUniqueID><ISSNLinking>0347-9994</ISSNLinking></MedlineJournalInfo><CitationSubset>D</CitationSubset><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000368" MajorTopicYN="N">Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000369" MajorTopicYN="N">Aged, 80 and over</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000465" MajorTopicYN="N">Algorithms</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005260" MajorTopicYN="N">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D007091" MajorTopicYN="N">Image Processing, Computer-Assisted</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D007575" MajorTopicYN="N">Jaw, Edentulous</DescriptorName><QualifierName UI="Q000000981" MajorTopicYN="N">diagnostic imaging</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008297" MajorTopicYN="N">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008334" MajorTopicYN="N">Mandible</DescriptorName><QualifierName UI="Q000000981" MajorTopicYN="Y">diagnostic imaging</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008875" MajorTopicYN="N">Middle Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D011856" MajorTopicYN="N">Radiographic Image Enhancement</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012815" MajorTopicYN="N">Signal Processing, Computer-Assisted</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013382" MajorTopicYN="N">Subtraction Technique</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014056" MajorTopicYN="N">Tomography, X-Ray</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1995</Year><Month>1</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1995</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1995</Year><Month>1</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">8560397</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Washington (État)</li></region><settlement><li>Seattle</li></settlement><orgName><li>Université de Washington</li></orgName></list><tree><noCountry><name sortKey="Hollender, L" sort="Hollender, L" uniqKey="Hollender L" first="L" last="Hollender">L. Hollender</name></noCountry><country name="États-Unis"><region name="Washington (État)"><name sortKey="Chen, S K" sort="Chen, S K" uniqKey="Chen S" first="S K" last="Chen">S K Chen</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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