The orthogonal measurements approach in estimating spleen size on CT images
PURPOSE:To find out which single measurement and/or linear regression model correlates well with splenic volume using the orthogonal measurements approach.METHODS:The study relied on retrospective analysis of 205 contrast-enhanced abdominal CT examinations carried out in adult patients using a 320-d...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Galenos Publishing House
2020-01-01
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| Series: | Diagnostic and Interventional Radiology |
| Online Access: |
http://www.dirjournal.org/archives/archive-detail/article-preview/the-orthogonal-measurements-approach-in-estimating/54820
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| _version_ | 1797691285615673344 |
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| author | Hakan İmamoğlu Gökmen Zararsız Mustafa Özdemir Nuri Erdoğan |
| author_facet | Hakan İmamoğlu Gökmen Zararsız Mustafa Özdemir Nuri Erdoğan |
| author_sort | Hakan İmamoğlu |
| collection | DOAJ |
| description | PURPOSE:To find out which single measurement and/or linear regression model correlates well with splenic volume using the orthogonal measurements approach.METHODS:The study relied on retrospective analysis of 205 contrast-enhanced abdominal CT examinations carried out in adult patients using a 320-detector CT system. CT volumetry was conducted by a semi-automated, model and threshold based segmentation algorithm that enables voxel-based volume calculation of abdominal organs. The orthogonal measurements were carried out in axial sections by measuring the maximum diameters of spleen projected in sagittal, coronal and transverse planes. In addition, we calculated the diagonal diameter of spleen, which is a derivative of orthogonal measurements. Statistical analysis included calculation of interobserver agreement on orthogonal measurements, followed by model building using linear regression analysis of the measurements.RESULTS:The interobserver agreement between two radiologists was very strong for all orthogonal measurements (r ≥ 0.971). The highest model performance was detected with the diagonal diameter (r2 = 0.956), followed by the superoinferior diameter (r2 = 0.857). Agreement statistics revealed that the regression formula derived from the diagonal diameter outperformed that of superoinferior diameter.CONCLUSION:The diagonal diameter appears to be the best parameter which correlates with splenic volume, whereas the superoinferior diameter can be an alternative in daily CT reporting practice. The orthogonal measurements approach not only provides a high interobserver agreement, but also the diagonal diameter can be translated into ultrasound studies. |
| first_indexed | 2024-03-12T02:11:16Z |
| format | Article |
| id | doaj.art-7f60660de8814e1c9725a4b52783960e |
| institution | Directory Open Access Journal |
| issn | 1305-3825 1305-3612 |
| language | English |
| last_indexed | 2024-03-12T02:11:16Z |
| publishDate | 2020-01-01 |
| publisher | Galenos Publishing House |
| record_format | Article |
| series | Diagnostic and Interventional Radiology |
| spelling | doaj.art-7f60660de8814e1c9725a4b52783960e2023-09-06T13:00:40ZengGalenos Publishing HouseDiagnostic and Interventional Radiology1305-38251305-36122020-01-0126151010.5152/dir.2019.1858713049054The orthogonal measurements approach in estimating spleen size on CT imagesHakan İmamoğlu0Gökmen Zararsız1Mustafa Özdemir2Nuri Erdoğan3 Department of Radiology, Erciyes University School of Medicine, Kayseri, Turkey Department of Biostatistics, Erciyes University School of Medicine, Kayseri, Turkey; Turcosa Analytics Solutions Ltd Co, Kayseri, Turkey Department of Radiology, Erciyes University School of Medicine, Kayseri, Turkey Department of Radiology, Erciyes University School of Medicine, Kayseri, Turkey PURPOSE:To find out which single measurement and/or linear regression model correlates well with splenic volume using the orthogonal measurements approach.METHODS:The study relied on retrospective analysis of 205 contrast-enhanced abdominal CT examinations carried out in adult patients using a 320-detector CT system. CT volumetry was conducted by a semi-automated, model and threshold based segmentation algorithm that enables voxel-based volume calculation of abdominal organs. The orthogonal measurements were carried out in axial sections by measuring the maximum diameters of spleen projected in sagittal, coronal and transverse planes. In addition, we calculated the diagonal diameter of spleen, which is a derivative of orthogonal measurements. Statistical analysis included calculation of interobserver agreement on orthogonal measurements, followed by model building using linear regression analysis of the measurements.RESULTS:The interobserver agreement between two radiologists was very strong for all orthogonal measurements (r ≥ 0.971). The highest model performance was detected with the diagonal diameter (r2 = 0.956), followed by the superoinferior diameter (r2 = 0.857). Agreement statistics revealed that the regression formula derived from the diagonal diameter outperformed that of superoinferior diameter.CONCLUSION:The diagonal diameter appears to be the best parameter which correlates with splenic volume, whereas the superoinferior diameter can be an alternative in daily CT reporting practice. The orthogonal measurements approach not only provides a high interobserver agreement, but also the diagonal diameter can be translated into ultrasound studies. http://www.dirjournal.org/archives/archive-detail/article-preview/the-orthogonal-measurements-approach-in-estimating/54820 |
| spellingShingle | Hakan İmamoğlu Gökmen Zararsız Mustafa Özdemir Nuri Erdoğan The orthogonal measurements approach in estimating spleen size on CT images Diagnostic and Interventional Radiology |
| title | The orthogonal measurements approach in estimating spleen size on CT images |
| title_full | The orthogonal measurements approach in estimating spleen size on CT images |
| title_fullStr | The orthogonal measurements approach in estimating spleen size on CT images |
| title_full_unstemmed | The orthogonal measurements approach in estimating spleen size on CT images |
| title_short | The orthogonal measurements approach in estimating spleen size on CT images |
| title_sort | orthogonal measurements approach in estimating spleen size on ct images |
| url |
http://www.dirjournal.org/archives/archive-detail/article-preview/the-orthogonal-measurements-approach-in-estimating/54820
|
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