Laryngeal tumor volume measurements determined with CT : A study on intra- and interobserver variability
To investigate the intra- and interobserver variability of computed tomography-based volume measurements of laryngeal tumors. The volume of 13 laryngeal tumors was repeatedly measured by five independent observers in four different sessions, using the summation-of-areas technique. Mean tumor volume...
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| Veröffentlicht in: | International journal of radiation oncology, biology, physics biology, physics, 1998-02, Vol.40 (3), p.553-557 |
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| container_title | International journal of radiation oncology, biology, physics |
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| creator | HERMANS, R FERON, M BELLON, E DUPONT, P VAN DEN BOGAERT, W BAERT, A. L |
| description | To investigate the intra- and interobserver variability of computed tomography-based volume measurements of laryngeal tumors.
The volume of 13 laryngeal tumors was repeatedly measured by five independent observers in four different sessions, using the summation-of-areas technique. Mean tumor volume and its standard deviation were calculated for each tumor. Statistical analysis was done with analysis of variance, Spearman rank correlation, and linear regression.
Both the effect of the observers (p < 0.0001) and the effect of the session (p < 0.01) on tumor volume was statistically significant. Interobserver variability was the most important component of total variability (89.3%). A significant rank correlation was found between mean volume and standard deviation (p < 0.01); the relationship between mean tumor volume and standard deviation can be described using linear regression [standard deviation = 0.28 volume + 0.35 (R = 0.79)].
Total variability in the computed tomography-based measurement of laryngeal tumor volume can be reduced by having the measurements done by a single trained observer. |
| doi_str_mv | 10.1016/S0360-3016(97)00853-5 |
| format | Article |
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The volume of 13 laryngeal tumors was repeatedly measured by five independent observers in four different sessions, using the summation-of-areas technique. Mean tumor volume and its standard deviation were calculated for each tumor. Statistical analysis was done with analysis of variance, Spearman rank correlation, and linear regression.
Both the effect of the observers (p < 0.0001) and the effect of the session (p < 0.01) on tumor volume was statistically significant. Interobserver variability was the most important component of total variability (89.3%). A significant rank correlation was found between mean volume and standard deviation (p < 0.01); the relationship between mean tumor volume and standard deviation can be described using linear regression [standard deviation = 0.28 volume + 0.35 (R = 0.79)].
Total variability in the computed tomography-based measurement of laryngeal tumor volume can be reduced by having the measurements done by a single trained observer.</description><identifier>ISSN: 0360-3016</identifier><identifier>EISSN: 1879-355X</identifier><identifier>DOI: 10.1016/S0360-3016(97)00853-5</identifier><identifier>PMID: 9486604</identifier><identifier>CODEN: IOBPD3</identifier><language>eng</language><publisher>New York, NY: Elsevier</publisher><subject>Analysis of Variance ; Biological and medical sciences ; Glottis ; Humans ; Laryngeal Neoplasms - diagnostic imaging ; Laryngeal Neoplasms - pathology ; Medical sciences ; Observer Variation ; Otorhinolaryngology (head neck, general aspects and miscellaneous) ; Otorhinolaryngology. Stomatology ; Tomography, X-Ray Computed ; Tumors</subject><ispartof>International journal of radiation oncology, biology, physics, 1998-02, Vol.40 (3), p.553-557</ispartof><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c333t-805e13573c90cc6d69fba82b88784a1431c60a03d3cd95d3014e63ef9f92482a3</citedby><cites>FETCH-LOGICAL-c333t-805e13573c90cc6d69fba82b88784a1431c60a03d3cd95d3014e63ef9f92482a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2165183$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/9486604$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>HERMANS, R</creatorcontrib><creatorcontrib>FERON, M</creatorcontrib><creatorcontrib>BELLON, E</creatorcontrib><creatorcontrib>DUPONT, P</creatorcontrib><creatorcontrib>VAN DEN BOGAERT, W</creatorcontrib><creatorcontrib>BAERT, A. L</creatorcontrib><title>Laryngeal tumor volume measurements determined with CT : A study on intra- and interobserver variability</title><title>International journal of radiation oncology, biology, physics</title><addtitle>Int J Radiat Oncol Biol Phys</addtitle><description>To investigate the intra- and interobserver variability of computed tomography-based volume measurements of laryngeal tumors.
The volume of 13 laryngeal tumors was repeatedly measured by five independent observers in four different sessions, using the summation-of-areas technique. Mean tumor volume and its standard deviation were calculated for each tumor. Statistical analysis was done with analysis of variance, Spearman rank correlation, and linear regression.
Both the effect of the observers (p < 0.0001) and the effect of the session (p < 0.01) on tumor volume was statistically significant. Interobserver variability was the most important component of total variability (89.3%). A significant rank correlation was found between mean volume and standard deviation (p < 0.01); the relationship between mean tumor volume and standard deviation can be described using linear regression [standard deviation = 0.28 volume + 0.35 (R = 0.79)].
Total variability in the computed tomography-based measurement of laryngeal tumor volume can be reduced by having the measurements done by a single trained observer.</description><subject>Analysis of Variance</subject><subject>Biological and medical sciences</subject><subject>Glottis</subject><subject>Humans</subject><subject>Laryngeal Neoplasms - diagnostic imaging</subject><subject>Laryngeal Neoplasms - pathology</subject><subject>Medical sciences</subject><subject>Observer Variation</subject><subject>Otorhinolaryngology (head neck, general aspects and miscellaneous)</subject><subject>Otorhinolaryngology. Stomatology</subject><subject>Tomography, X-Ray Computed</subject><subject>Tumors</subject><issn>0360-3016</issn><issn>1879-355X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kEtLAzEUhYMotT5-QiELEV2MJs3k5U6KLyi4UMFdyCR3NDIPTTJK_71TLV3dA_ecc7kfQjNKLiih4vKJMEEKNsozLc8JUZwVfAdNqZK6YJy_7qLp1rKPDlL6IIRQKssJmuhSCUHKKXpf2rjq3sA2OA9tH_F33wwt4BZsGiK00OWEPWSIbejA45-Q3_HiGV_ha5zy4Fe473DocrQFtp1fS4h9lSB-w1hmY7BVaEJeHaG92jYJjjfzEL3c3jwv7ovl493D4npZOMZYLhThQBmXzGninPBC15VV80opqUpLS0adIJYwz5zX3I-_lSAY1LrW81LNLTtEp_-9n7H_GiBl04bkoGlsB_2QjNSSUCnlaOT_Rhf7lCLU5jOGdqRhKDFrwuaPsFnjM1qaP8KGj7nZ5sBQteC3qQ3ScX-y2dvkbFNH27mQtrY5FZwqxn4BO9aEGA</recordid><startdate>19980201</startdate><enddate>19980201</enddate><creator>HERMANS, R</creator><creator>FERON, M</creator><creator>BELLON, E</creator><creator>DUPONT, P</creator><creator>VAN DEN BOGAERT, W</creator><creator>BAERT, A. L</creator><general>Elsevier</general><scope>IQODW</scope><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>19980201</creationdate><title>Laryngeal tumor volume measurements determined with CT : A study on intra- and interobserver variability</title><author>HERMANS, R ; FERON, M ; BELLON, E ; DUPONT, P ; VAN DEN BOGAERT, W ; BAERT, A. L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c333t-805e13573c90cc6d69fba82b88784a1431c60a03d3cd95d3014e63ef9f92482a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Analysis of Variance</topic><topic>Biological and medical sciences</topic><topic>Glottis</topic><topic>Humans</topic><topic>Laryngeal Neoplasms - diagnostic imaging</topic><topic>Laryngeal Neoplasms - pathology</topic><topic>Medical sciences</topic><topic>Observer Variation</topic><topic>Otorhinolaryngology (head neck, general aspects and miscellaneous)</topic><topic>Otorhinolaryngology. Stomatology</topic><topic>Tomography, X-Ray Computed</topic><topic>Tumors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>HERMANS, R</creatorcontrib><creatorcontrib>FERON, M</creatorcontrib><creatorcontrib>BELLON, E</creatorcontrib><creatorcontrib>DUPONT, P</creatorcontrib><creatorcontrib>VAN DEN BOGAERT, W</creatorcontrib><creatorcontrib>BAERT, A. L</creatorcontrib><collection>Pascal-Francis</collection><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>International journal of radiation oncology, biology, physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>HERMANS, R</au><au>FERON, M</au><au>BELLON, E</au><au>DUPONT, P</au><au>VAN DEN BOGAERT, W</au><au>BAERT, A. L</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Laryngeal tumor volume measurements determined with CT : A study on intra- and interobserver variability</atitle><jtitle>International journal of radiation oncology, biology, physics</jtitle><addtitle>Int J Radiat Oncol Biol Phys</addtitle><date>1998-02-01</date><risdate>1998</risdate><volume>40</volume><issue>3</issue><spage>553</spage><epage>557</epage><pages>553-557</pages><issn>0360-3016</issn><eissn>1879-355X</eissn><coden>IOBPD3</coden><abstract>To investigate the intra- and interobserver variability of computed tomography-based volume measurements of laryngeal tumors.
The volume of 13 laryngeal tumors was repeatedly measured by five independent observers in four different sessions, using the summation-of-areas technique. Mean tumor volume and its standard deviation were calculated for each tumor. Statistical analysis was done with analysis of variance, Spearman rank correlation, and linear regression.
Both the effect of the observers (p < 0.0001) and the effect of the session (p < 0.01) on tumor volume was statistically significant. Interobserver variability was the most important component of total variability (89.3%). A significant rank correlation was found between mean volume and standard deviation (p < 0.01); the relationship between mean tumor volume and standard deviation can be described using linear regression [standard deviation = 0.28 volume + 0.35 (R = 0.79)].
Total variability in the computed tomography-based measurement of laryngeal tumor volume can be reduced by having the measurements done by a single trained observer.</abstract><cop>New York, NY</cop><pub>Elsevier</pub><pmid>9486604</pmid><doi>10.1016/S0360-3016(97)00853-5</doi><tpages>5</tpages></addata></record> |
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| ispartof | International journal of radiation oncology, biology, physics, 1998-02, Vol.40 (3), p.553-557 |
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| source | MEDLINE; Access via ScienceDirect (Elsevier) |
| subjects | Analysis of Variance Biological and medical sciences Glottis Humans Laryngeal Neoplasms - diagnostic imaging Laryngeal Neoplasms - pathology Medical sciences Observer Variation Otorhinolaryngology (head neck, general aspects and miscellaneous) Otorhinolaryngology. Stomatology Tomography, X-Ray Computed Tumors |
| title | Laryngeal tumor volume measurements determined with CT : A study on intra- and interobserver variability |
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