Cone beam computed tomography for dental and maxillofacial imaging: technique improvement and low-dose protocols
Objective The aim of this study was to evaluate images quality and radiation doses of Cone Beam Computed Tomography (CBCT) for dental and maxillofacial imaging testing five different acquisition protocols. Methods Dose measurements of different acquisition protocols were calculated for Pax Zenith th...
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| Veröffentlicht in: | Radiologia medica 2017-08, Vol.122 (8), p.581-588 |
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| creator | Feragalli, Beatrice Rampado, Osvaldo Abate, Cecilia Macrì, Monica Festa, Felice Stromei, Francesco Caputi, Sergio Guglielmi, Giuseppe |
| description | Objective
The aim of this study was to evaluate images quality and radiation doses of Cone Beam Computed Tomography (CBCT) for dental and maxillofacial imaging testing five different acquisition protocols.
Methods
Dose measurements of different acquisition protocols were calculated for Pax Zenith three-dimensional (3D) Cone Beam (Vatech, Korea) and for conventional orthopantomography (OPT) and cephalometric skull imaging Ortophos (Sirona Dental Systems, Bernsheim, Germany). The absorbed organ doses were measured using an anthropomorphic phantom loaded with thermoluminescent dosimeters at 58 sites related to sensitive organs. Five different CBCT protocols were evaluated for image quality and radiation doses. They differed in FOV, image resolution, kVp, mA, acquisition time in seconds and radiation dose. Measurements were then carried out with the orthopantomograph. Equivalent and effective doses were calculated.
Results
The reference protocol with large FOV, high resolution quality images, 95 kVp, 5 mA and acquisition time of 24 s resulted in a DAP value of 1556 mGy cm
2
instead the protocol with reduced kVp from 95 to 80 kVp translated into a value of DAP inferior to 35% (from 1556 to 1013 mGy cm
2
). Going from a high resolution to a normal resolution, there was a reduction of the acquisition time to 15 s which allowed further dose reduction of approximately 40% (628 mGy cm
2
); this protocol resulted in a value of effective dose of 35 microSievert (μSv). Moreover, the effect of changing FOV has been evaluated, considering two scans with a reduced FOV (160 × 140 and 120 × 90 mm, respectively).
Conclusions
CBCT low-dose protocol with large FOV, normal resolution quality images, 80 kVp, 5 mA and acquisition time of 15 s resulted in a value of effective dose of 35 microSievert (μSv). This protocol allows the study of maxillofacial region with high quality of images and a very low radiation dose and, therefore, could be proposed in selected case where a complete assessment of dental and maxillofacial region is useful for treatment planning. |
| doi_str_mv | 10.1007/s11547-017-0758-2 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_1918019176</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1918019176</sourcerecordid><originalsourceid>FETCH-LOGICAL-c372t-63cef238bcdad4b34b6fed8f2a67e127e172f90da0589f7602ac5abdae46a56d3</originalsourceid><addsrcrecordid>eNp1UMlOwzAUtBCIlsIHcEGWOAe8JI7DDVVsUiUucLYcL21QEgc7Bfr3vFJAXDg8WxrP8jwInVJyQQkpLxOlRV5mhMKUhczYHppSyUQmKsn30ZQQzjPJBZugo5ReCMkJJdUhmjAACynlFA3z0DtcO91hE7phPTqLx9CFZdTDaoN9iNi6ftQt1r3Fnf5o2jZ4bRpAmk4vm355hUdnVn3zunYADTG8uQ4kX4I2vGc2JIcBHoMJbTpGB163yZ183zP0fHvzNL_PFo93D_PrRWZ4ycZMcOM847I2Vtu85nktvLPSMy1KRxlMyXxFrCaFrHwpCNOm0LXVLhe6EJbP0PnOF5JhszSql7COPUQqWlFJ4CgFsOiOZWJIKTqvhgjfihtFidp2rHYdK-hYbTtWDDRn387runP2V_FTKhDYjpDgqV-6-Cf6X9dPLoeJww</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1918019176</pqid></control><display><type>article</type><title>Cone beam computed tomography for dental and maxillofacial imaging: technique improvement and low-dose protocols</title><source>MEDLINE</source><source>SpringerNature Journals</source><creator>Feragalli, Beatrice ; Rampado, Osvaldo ; Abate, Cecilia ; Macrì, Monica ; Festa, Felice ; Stromei, Francesco ; Caputi, Sergio ; Guglielmi, Giuseppe</creator><creatorcontrib>Feragalli, Beatrice ; Rampado, Osvaldo ; Abate, Cecilia ; Macrì, Monica ; Festa, Felice ; Stromei, Francesco ; Caputi, Sergio ; Guglielmi, Giuseppe</creatorcontrib><description>Objective
The aim of this study was to evaluate images quality and radiation doses of Cone Beam Computed Tomography (CBCT) for dental and maxillofacial imaging testing five different acquisition protocols.
Methods
Dose measurements of different acquisition protocols were calculated for Pax Zenith three-dimensional (3D) Cone Beam (Vatech, Korea) and for conventional orthopantomography (OPT) and cephalometric skull imaging Ortophos (Sirona Dental Systems, Bernsheim, Germany). The absorbed organ doses were measured using an anthropomorphic phantom loaded with thermoluminescent dosimeters at 58 sites related to sensitive organs. Five different CBCT protocols were evaluated for image quality and radiation doses. They differed in FOV, image resolution, kVp, mA, acquisition time in seconds and radiation dose. Measurements were then carried out with the orthopantomograph. Equivalent and effective doses were calculated.
Results
The reference protocol with large FOV, high resolution quality images, 95 kVp, 5 mA and acquisition time of 24 s resulted in a DAP value of 1556 mGy cm
2
instead the protocol with reduced kVp from 95 to 80 kVp translated into a value of DAP inferior to 35% (from 1556 to 1013 mGy cm
2
). Going from a high resolution to a normal resolution, there was a reduction of the acquisition time to 15 s which allowed further dose reduction of approximately 40% (628 mGy cm
2
); this protocol resulted in a value of effective dose of 35 microSievert (μSv). Moreover, the effect of changing FOV has been evaluated, considering two scans with a reduced FOV (160 × 140 and 120 × 90 mm, respectively).
Conclusions
CBCT low-dose protocol with large FOV, normal resolution quality images, 80 kVp, 5 mA and acquisition time of 15 s resulted in a value of effective dose of 35 microSievert (μSv). This protocol allows the study of maxillofacial region with high quality of images and a very low radiation dose and, therefore, could be proposed in selected case where a complete assessment of dental and maxillofacial region is useful for treatment planning.</description><identifier>ISSN: 0033-8362</identifier><identifier>EISSN: 1826-6983</identifier><identifier>DOI: 10.1007/s11547-017-0758-2</identifier><identifier>PMID: 28365888</identifier><language>eng</language><publisher>Milan: Springer Milan</publisher><subject>Cephalometry ; Computed Tomography ; Cone-Beam Computed Tomography - methods ; Diagnostic Radiology ; Dosimeters ; High resolution ; Humans ; Image acquisition ; Image quality ; Image resolution ; Imaging ; Interventional Radiology ; Mathematical analysis ; Measurement methods ; Medical imaging ; Medicine ; Medicine & Public Health ; Neuroradiology ; Organs ; Phantoms, Imaging ; Quality ; Radiation Dosage ; Radiography, Dental - methods ; Radiography, Panoramic ; Radiology ; Skull ; Thermoluminescent Dosimetry ; Ultrasound</subject><ispartof>Radiologia medica, 2017-08, Vol.122 (8), p.581-588</ispartof><rights>Italian Society of Medical Radiology 2017</rights><rights>Copyright Springer Science & Business Media 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c372t-63cef238bcdad4b34b6fed8f2a67e127e172f90da0589f7602ac5abdae46a56d3</citedby><cites>FETCH-LOGICAL-c372t-63cef238bcdad4b34b6fed8f2a67e127e172f90da0589f7602ac5abdae46a56d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11547-017-0758-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11547-017-0758-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28365888$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Feragalli, Beatrice</creatorcontrib><creatorcontrib>Rampado, Osvaldo</creatorcontrib><creatorcontrib>Abate, Cecilia</creatorcontrib><creatorcontrib>Macrì, Monica</creatorcontrib><creatorcontrib>Festa, Felice</creatorcontrib><creatorcontrib>Stromei, Francesco</creatorcontrib><creatorcontrib>Caputi, Sergio</creatorcontrib><creatorcontrib>Guglielmi, Giuseppe</creatorcontrib><title>Cone beam computed tomography for dental and maxillofacial imaging: technique improvement and low-dose protocols</title><title>Radiologia medica</title><addtitle>Radiol med</addtitle><addtitle>Radiol Med</addtitle><description>Objective
The aim of this study was to evaluate images quality and radiation doses of Cone Beam Computed Tomography (CBCT) for dental and maxillofacial imaging testing five different acquisition protocols.
Methods
Dose measurements of different acquisition protocols were calculated for Pax Zenith three-dimensional (3D) Cone Beam (Vatech, Korea) and for conventional orthopantomography (OPT) and cephalometric skull imaging Ortophos (Sirona Dental Systems, Bernsheim, Germany). The absorbed organ doses were measured using an anthropomorphic phantom loaded with thermoluminescent dosimeters at 58 sites related to sensitive organs. Five different CBCT protocols were evaluated for image quality and radiation doses. They differed in FOV, image resolution, kVp, mA, acquisition time in seconds and radiation dose. Measurements were then carried out with the orthopantomograph. Equivalent and effective doses were calculated.
Results
The reference protocol with large FOV, high resolution quality images, 95 kVp, 5 mA and acquisition time of 24 s resulted in a DAP value of 1556 mGy cm
2
instead the protocol with reduced kVp from 95 to 80 kVp translated into a value of DAP inferior to 35% (from 1556 to 1013 mGy cm
2
). Going from a high resolution to a normal resolution, there was a reduction of the acquisition time to 15 s which allowed further dose reduction of approximately 40% (628 mGy cm
2
); this protocol resulted in a value of effective dose of 35 microSievert (μSv). Moreover, the effect of changing FOV has been evaluated, considering two scans with a reduced FOV (160 × 140 and 120 × 90 mm, respectively).
Conclusions
CBCT low-dose protocol with large FOV, normal resolution quality images, 80 kVp, 5 mA and acquisition time of 15 s resulted in a value of effective dose of 35 microSievert (μSv). This protocol allows the study of maxillofacial region with high quality of images and a very low radiation dose and, therefore, could be proposed in selected case where a complete assessment of dental and maxillofacial region is useful for treatment planning.</description><subject>Cephalometry</subject><subject>Computed Tomography</subject><subject>Cone-Beam Computed Tomography - methods</subject><subject>Diagnostic Radiology</subject><subject>Dosimeters</subject><subject>High resolution</subject><subject>Humans</subject><subject>Image acquisition</subject><subject>Image quality</subject><subject>Image resolution</subject><subject>Imaging</subject><subject>Interventional Radiology</subject><subject>Mathematical analysis</subject><subject>Measurement methods</subject><subject>Medical imaging</subject><subject>Medicine</subject><subject>Medicine & Public Health</subject><subject>Neuroradiology</subject><subject>Organs</subject><subject>Phantoms, Imaging</subject><subject>Quality</subject><subject>Radiation Dosage</subject><subject>Radiography, Dental - methods</subject><subject>Radiography, Panoramic</subject><subject>Radiology</subject><subject>Skull</subject><subject>Thermoluminescent Dosimetry</subject><subject>Ultrasound</subject><issn>0033-8362</issn><issn>1826-6983</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1UMlOwzAUtBCIlsIHcEGWOAe8JI7DDVVsUiUucLYcL21QEgc7Bfr3vFJAXDg8WxrP8jwInVJyQQkpLxOlRV5mhMKUhczYHppSyUQmKsn30ZQQzjPJBZugo5ReCMkJJdUhmjAACynlFA3z0DtcO91hE7phPTqLx9CFZdTDaoN9iNi6ftQt1r3Fnf5o2jZ4bRpAmk4vm355hUdnVn3zunYADTG8uQ4kX4I2vGc2JIcBHoMJbTpGB163yZ183zP0fHvzNL_PFo93D_PrRWZ4ycZMcOM847I2Vtu85nktvLPSMy1KRxlMyXxFrCaFrHwpCNOm0LXVLhe6EJbP0PnOF5JhszSql7COPUQqWlFJ4CgFsOiOZWJIKTqvhgjfihtFidp2rHYdK-hYbTtWDDRn387runP2V_FTKhDYjpDgqV-6-Cf6X9dPLoeJww</recordid><startdate>20170801</startdate><enddate>20170801</enddate><creator>Feragalli, Beatrice</creator><creator>Rampado, Osvaldo</creator><creator>Abate, Cecilia</creator><creator>Macrì, Monica</creator><creator>Festa, Felice</creator><creator>Stromei, Francesco</creator><creator>Caputi, Sergio</creator><creator>Guglielmi, Giuseppe</creator><general>Springer Milan</general><general>Springer Nature B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20170801</creationdate><title>Cone beam computed tomography for dental and maxillofacial imaging: technique improvement and low-dose protocols</title><author>Feragalli, Beatrice ; Rampado, Osvaldo ; Abate, Cecilia ; Macrì, Monica ; Festa, Felice ; Stromei, Francesco ; Caputi, Sergio ; Guglielmi, Giuseppe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-63cef238bcdad4b34b6fed8f2a67e127e172f90da0589f7602ac5abdae46a56d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Cephalometry</topic><topic>Computed Tomography</topic><topic>Cone-Beam Computed Tomography - methods</topic><topic>Diagnostic Radiology</topic><topic>Dosimeters</topic><topic>High resolution</topic><topic>Humans</topic><topic>Image acquisition</topic><topic>Image quality</topic><topic>Image resolution</topic><topic>Imaging</topic><topic>Interventional Radiology</topic><topic>Mathematical analysis</topic><topic>Measurement methods</topic><topic>Medical imaging</topic><topic>Medicine</topic><topic>Medicine & Public Health</topic><topic>Neuroradiology</topic><topic>Organs</topic><topic>Phantoms, Imaging</topic><topic>Quality</topic><topic>Radiation Dosage</topic><topic>Radiography, Dental - methods</topic><topic>Radiography, Panoramic</topic><topic>Radiology</topic><topic>Skull</topic><topic>Thermoluminescent Dosimetry</topic><topic>Ultrasound</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Feragalli, Beatrice</creatorcontrib><creatorcontrib>Rampado, Osvaldo</creatorcontrib><creatorcontrib>Abate, Cecilia</creatorcontrib><creatorcontrib>Macrì, Monica</creatorcontrib><creatorcontrib>Festa, Felice</creatorcontrib><creatorcontrib>Stromei, Francesco</creatorcontrib><creatorcontrib>Caputi, Sergio</creatorcontrib><creatorcontrib>Guglielmi, Giuseppe</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><jtitle>Radiologia medica</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Feragalli, Beatrice</au><au>Rampado, Osvaldo</au><au>Abate, Cecilia</au><au>Macrì, Monica</au><au>Festa, Felice</au><au>Stromei, Francesco</au><au>Caputi, Sergio</au><au>Guglielmi, Giuseppe</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cone beam computed tomography for dental and maxillofacial imaging: technique improvement and low-dose protocols</atitle><jtitle>Radiologia medica</jtitle><stitle>Radiol med</stitle><addtitle>Radiol Med</addtitle><date>2017-08-01</date><risdate>2017</risdate><volume>122</volume><issue>8</issue><spage>581</spage><epage>588</epage><pages>581-588</pages><issn>0033-8362</issn><eissn>1826-6983</eissn><abstract>Objective
The aim of this study was to evaluate images quality and radiation doses of Cone Beam Computed Tomography (CBCT) for dental and maxillofacial imaging testing five different acquisition protocols.
Methods
Dose measurements of different acquisition protocols were calculated for Pax Zenith three-dimensional (3D) Cone Beam (Vatech, Korea) and for conventional orthopantomography (OPT) and cephalometric skull imaging Ortophos (Sirona Dental Systems, Bernsheim, Germany). The absorbed organ doses were measured using an anthropomorphic phantom loaded with thermoluminescent dosimeters at 58 sites related to sensitive organs. Five different CBCT protocols were evaluated for image quality and radiation doses. They differed in FOV, image resolution, kVp, mA, acquisition time in seconds and radiation dose. Measurements were then carried out with the orthopantomograph. Equivalent and effective doses were calculated.
Results
The reference protocol with large FOV, high resolution quality images, 95 kVp, 5 mA and acquisition time of 24 s resulted in a DAP value of 1556 mGy cm
2
instead the protocol with reduced kVp from 95 to 80 kVp translated into a value of DAP inferior to 35% (from 1556 to 1013 mGy cm
2
). Going from a high resolution to a normal resolution, there was a reduction of the acquisition time to 15 s which allowed further dose reduction of approximately 40% (628 mGy cm
2
); this protocol resulted in a value of effective dose of 35 microSievert (μSv). Moreover, the effect of changing FOV has been evaluated, considering two scans with a reduced FOV (160 × 140 and 120 × 90 mm, respectively).
Conclusions
CBCT low-dose protocol with large FOV, normal resolution quality images, 80 kVp, 5 mA and acquisition time of 15 s resulted in a value of effective dose of 35 microSievert (μSv). This protocol allows the study of maxillofacial region with high quality of images and a very low radiation dose and, therefore, could be proposed in selected case where a complete assessment of dental and maxillofacial region is useful for treatment planning.</abstract><cop>Milan</cop><pub>Springer Milan</pub><pmid>28365888</pmid><doi>10.1007/s11547-017-0758-2</doi><tpages>8</tpages></addata></record> |
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| subjects | Cephalometry Computed Tomography Cone-Beam Computed Tomography - methods Diagnostic Radiology Dosimeters High resolution Humans Image acquisition Image quality Image resolution Imaging Interventional Radiology Mathematical analysis Measurement methods Medical imaging Medicine Medicine & Public Health Neuroradiology Organs Phantoms, Imaging Quality Radiation Dosage Radiography, Dental - methods Radiography, Panoramic Radiology Skull Thermoluminescent Dosimetry Ultrasound |
| title | Cone beam computed tomography for dental and maxillofacial imaging: technique improvement and low-dose protocols |
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