Resolution of pulmonary multiplanar reconstruction images from 0.5-mm theoretical isotropic data: a fundamental study using an inflated and fixed lung specimen
The aim of the present study was to define the resolution of multiplanar reconstruction (MPR) of the lung from "theoretical isotropic data." Using inflated and fixed lung specimens of the pig placed in the chest wall phantom, 0.5-mm isotropic data were obtained with 2 different helical pit...
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| Veröffentlicht in: | Acta medica Okayama 2007-04, Vol.61 (2), p.63-69 |
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| container_title | Acta medica Okayama |
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| creator | Maki, Daisuke Takahashi, Masashi Ushio, Noritoshi Takazakura, Ryutaro Nitta, Norihisa Murata, Kiyoshi Kanazawa, Susumu |
| description | The aim of the present study was to define the resolution of multiplanar reconstruction (MPR) of the lung from "theoretical isotropic data." Using inflated and fixed lung specimens of the pig placed in the chest wall phantom, 0.5-mm isotropic data were obtained with 2 different helical pitches: 1:7 (high-quality mode) or 1:13, (high-speed mode), and 2 different tube currents: 250 mAs (high-tube-current mode) or 100 mAs (low-tube-current mode), with or without overlapping reconstruction. MPRs were created from these axial data. The diameter of the smallest visible pulmonary artery and bronchi of these CT images were measured on the corresponding slices of the specimen. The high-speed and low-tube-current mode significantly degraded the image quality due to increased noise. The smallest visible pulmonary artery and bronchus resolved on MPRs from axial-spiral data with 0.5-mm collimation were approximately 100 micrometer and 1,000 micrometer in diameter, respectively. In conclusion, helical pitch and tube current influence the resolution of MPR of the lung. |
| format | Article |
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Using inflated and fixed lung specimens of the pig placed in the chest wall phantom, 0.5-mm isotropic data were obtained with 2 different helical pitches: 1:7 (high-quality mode) or 1:13, (high-speed mode), and 2 different tube currents: 250 mAs (high-tube-current mode) or 100 mAs (low-tube-current mode), with or without overlapping reconstruction. MPRs were created from these axial data. The diameter of the smallest visible pulmonary artery and bronchi of these CT images were measured on the corresponding slices of the specimen. The high-speed and low-tube-current mode significantly degraded the image quality due to increased noise. The smallest visible pulmonary artery and bronchus resolved on MPRs from axial-spiral data with 0.5-mm collimation were approximately 100 micrometer and 1,000 micrometer in diameter, respectively. 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Using inflated and fixed lung specimens of the pig placed in the chest wall phantom, 0.5-mm isotropic data were obtained with 2 different helical pitches: 1:7 (high-quality mode) or 1:13, (high-speed mode), and 2 different tube currents: 250 mAs (high-tube-current mode) or 100 mAs (low-tube-current mode), with or without overlapping reconstruction. MPRs were created from these axial data. The diameter of the smallest visible pulmonary artery and bronchi of these CT images were measured on the corresponding slices of the specimen. The high-speed and low-tube-current mode significantly degraded the image quality due to increased noise. The smallest visible pulmonary artery and bronchus resolved on MPRs from axial-spiral data with 0.5-mm collimation were approximately 100 micrometer and 1,000 micrometer in diameter, respectively. In conclusion, helical pitch and tube current influence the resolution of MPR of the lung.</description><subject>Animals</subject><subject>Bronchography</subject><subject>Image Processing, Computer-Assisted - methods</subject><subject>Lung - diagnostic imaging</subject><subject>Phantoms, Imaging</subject><subject>Pulmonary Artery - diagnostic imaging</subject><subject>Radiography, Thoracic</subject><subject>Swine</subject><subject>Time Factors</subject><subject>Tomography, X-Ray Computed</subject><issn>0386-300X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo1kMtKxDAUhrtQnHH0FSQrd5U0TZPWnQzeQBBEwV3JJCdjhqSpuYDzNL6qQcfV-Q__ZfEdVUvc9qxuMX5fVKcx7jAmdGD4pFo0nPKmxWxZfb9A9DYn4yfkNZqzdX4SYY9ctsnMVpQHBZB-iilk-ZszTmwhIh28Q_iqq51D6QN8gGSksMhEn4KfjURKJHGNBNJ5UsLBlIobU1Z7lKOZtkiUrUlbkUAVrZA2X0XZXKw4gzSlclYda2EjnB_uqnq7u31dP9RPz_eP65unekc4T3VHBoJFo_jQ9hpLTbXuetEwKRVrFBDRY7lhagDeSDIwQnvoqOYUU4aV3OB2VV3-7c7Bf2aIaXQmSrAFAPgcR45phwlrS_DiEMwbB2qcQ8ER9uM_0vYHa0Z1vA</recordid><startdate>200704</startdate><enddate>200704</enddate><creator>Maki, Daisuke</creator><creator>Takahashi, Masashi</creator><creator>Ushio, Noritoshi</creator><creator>Takazakura, Ryutaro</creator><creator>Nitta, Norihisa</creator><creator>Murata, Kiyoshi</creator><creator>Kanazawa, Susumu</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>200704</creationdate><title>Resolution of pulmonary multiplanar reconstruction images from 0.5-mm theoretical isotropic data: a fundamental study using an inflated and fixed lung specimen</title><author>Maki, Daisuke ; Takahashi, Masashi ; Ushio, Noritoshi ; Takazakura, Ryutaro ; Nitta, Norihisa ; Murata, Kiyoshi ; Kanazawa, Susumu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j277t-52920a1d7938f0cf4ff58a16ccd61de2a80cb6d9e71c296248e54f740460dcb03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Animals</topic><topic>Bronchography</topic><topic>Image Processing, Computer-Assisted - methods</topic><topic>Lung - diagnostic imaging</topic><topic>Phantoms, Imaging</topic><topic>Pulmonary Artery - diagnostic imaging</topic><topic>Radiography, Thoracic</topic><topic>Swine</topic><topic>Time Factors</topic><topic>Tomography, X-Ray Computed</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Maki, Daisuke</creatorcontrib><creatorcontrib>Takahashi, Masashi</creatorcontrib><creatorcontrib>Ushio, Noritoshi</creatorcontrib><creatorcontrib>Takazakura, Ryutaro</creatorcontrib><creatorcontrib>Nitta, Norihisa</creatorcontrib><creatorcontrib>Murata, Kiyoshi</creatorcontrib><creatorcontrib>Kanazawa, Susumu</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Acta medica Okayama</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Maki, Daisuke</au><au>Takahashi, Masashi</au><au>Ushio, Noritoshi</au><au>Takazakura, Ryutaro</au><au>Nitta, Norihisa</au><au>Murata, Kiyoshi</au><au>Kanazawa, Susumu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Resolution of pulmonary multiplanar reconstruction images from 0.5-mm theoretical isotropic data: a fundamental study using an inflated and fixed lung specimen</atitle><jtitle>Acta medica Okayama</jtitle><addtitle>Acta Med Okayama</addtitle><date>2007-04</date><risdate>2007</risdate><volume>61</volume><issue>2</issue><spage>63</spage><epage>69</epage><pages>63-69</pages><issn>0386-300X</issn><abstract>The aim of the present study was to define the resolution of multiplanar reconstruction (MPR) of the lung from "theoretical isotropic data." Using inflated and fixed lung specimens of the pig placed in the chest wall phantom, 0.5-mm isotropic data were obtained with 2 different helical pitches: 1:7 (high-quality mode) or 1:13, (high-speed mode), and 2 different tube currents: 250 mAs (high-tube-current mode) or 100 mAs (low-tube-current mode), with or without overlapping reconstruction. MPRs were created from these axial data. The diameter of the smallest visible pulmonary artery and bronchi of these CT images were measured on the corresponding slices of the specimen. The high-speed and low-tube-current mode significantly degraded the image quality due to increased noise. The smallest visible pulmonary artery and bronchus resolved on MPRs from axial-spiral data with 0.5-mm collimation were approximately 100 micrometer and 1,000 micrometer in diameter, respectively. In conclusion, helical pitch and tube current influence the resolution of MPR of the lung.</abstract><cop>Japan</cop><pmid>17471306</pmid><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| source | MEDLINE; Open Access Titles of Japan; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Animals Bronchography Image Processing, Computer-Assisted - methods Lung - diagnostic imaging Phantoms, Imaging Pulmonary Artery - diagnostic imaging Radiography, Thoracic Swine Time Factors Tomography, X-Ray Computed |
| title | Resolution of pulmonary multiplanar reconstruction images from 0.5-mm theoretical isotropic data: a fundamental study using an inflated and fixed lung specimen |
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