Comparison of radiation doses using weight-based protocol and dose modulation techniques for patients undergoing biphasic abdominal computed tomography examinations
Computed tomography (CT) of the abdomen contributes a substantial amount of man-made radiation dose to patients and use of this modality is on the increase. This study intends to compare radiation dose and image quality using dose modulation techniques and weight- based protocol exposure parameters...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2009-01-01
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| Series: | Journal of Medical Physics |
| Subjects: | |
| Online Access: | http://www.jmp.org.in/article.asp?issn=0971-6203;year=2009;volume=34;issue=4;spage=217;epage=222;aulast=Livingstone |
| _version_ | 1818897290942742528 |
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| author | Livingstone Roshan Dinakaran Paul Cherian Rekha Eapen Anu |
| author_facet | Livingstone Roshan Dinakaran Paul Cherian Rekha Eapen Anu |
| author_sort | Livingstone Roshan |
| collection | DOAJ |
| description | Computed tomography (CT) of the abdomen contributes a substantial amount of man-made radiation dose to patients and use of this modality is on the increase. This study intends to compare radiation dose and image quality using dose modulation techniques and weight- based protocol exposure parameters for biphasic abdominal CT. Using a six-slice CT scanner, a prospective study of 426 patients who underwent abdominal CT examinations was performed. Constant tube potentials of 90 kV and 120 kV were used for all arterial and portal venous phase respectively. The tube current-time product for weight-based protocol was optimized according to patient′s body weight; this was automatically selected in dose modulations. The effective dose using weight-based protocol, angular and z-axis dose modulation was 11.3 mSv, 9.5 mSv and 8.2 mSv respectively for the patient′s body weight ranging from 40 to 60 kg. For patients of body weights ranging 60 to 80 kg, the effective doses were 13.2 mSv, 11.2 mSv and 10.6 mSv respectively. The use of dose modulation technique resulted in a reduction of 16 to 28% in radiation dose with acceptable diagnostic accuracy in comparison to the use of weight-based protocol settings. |
| first_indexed | 2024-12-19T19:13:50Z |
| format | Article |
| id | doaj.art-82e59579e367409497796639ec341ae2 |
| institution | Directory Open Access Journal |
| issn | 0971-6203 1998-3913 |
| language | English |
| last_indexed | 2024-12-19T19:13:50Z |
| publishDate | 2009-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Journal of Medical Physics |
| spelling | doaj.art-82e59579e367409497796639ec341ae22022-12-21T20:09:12ZengWolters Kluwer Medknow PublicationsJournal of Medical Physics0971-62031998-39132009-01-01344217222Comparison of radiation doses using weight-based protocol and dose modulation techniques for patients undergoing biphasic abdominal computed tomography examinationsLivingstone RoshanDinakaran PaulCherian RekhaEapen AnuComputed tomography (CT) of the abdomen contributes a substantial amount of man-made radiation dose to patients and use of this modality is on the increase. This study intends to compare radiation dose and image quality using dose modulation techniques and weight- based protocol exposure parameters for biphasic abdominal CT. Using a six-slice CT scanner, a prospective study of 426 patients who underwent abdominal CT examinations was performed. Constant tube potentials of 90 kV and 120 kV were used for all arterial and portal venous phase respectively. The tube current-time product for weight-based protocol was optimized according to patient′s body weight; this was automatically selected in dose modulations. The effective dose using weight-based protocol, angular and z-axis dose modulation was 11.3 mSv, 9.5 mSv and 8.2 mSv respectively for the patient′s body weight ranging from 40 to 60 kg. For patients of body weights ranging 60 to 80 kg, the effective doses were 13.2 mSv, 11.2 mSv and 10.6 mSv respectively. The use of dose modulation technique resulted in a reduction of 16 to 28% in radiation dose with acceptable diagnostic accuracy in comparison to the use of weight-based protocol settings.http://www.jmp.org.in/article.asp?issn=0971-6203;year=2009;volume=34;issue=4;spage=217;epage=222;aulast=LivingstoneAbdominal computed tomographydose modulationeffective doseimage quality |
| spellingShingle | Livingstone Roshan Dinakaran Paul Cherian Rekha Eapen Anu Comparison of radiation doses using weight-based protocol and dose modulation techniques for patients undergoing biphasic abdominal computed tomography examinations Journal of Medical Physics Abdominal computed tomography dose modulation effective dose image quality |
| title | Comparison of radiation doses using weight-based protocol and dose modulation techniques for patients undergoing biphasic abdominal computed tomography examinations |
| title_full | Comparison of radiation doses using weight-based protocol and dose modulation techniques for patients undergoing biphasic abdominal computed tomography examinations |
| title_fullStr | Comparison of radiation doses using weight-based protocol and dose modulation techniques for patients undergoing biphasic abdominal computed tomography examinations |
| title_full_unstemmed | Comparison of radiation doses using weight-based protocol and dose modulation techniques for patients undergoing biphasic abdominal computed tomography examinations |
| title_short | Comparison of radiation doses using weight-based protocol and dose modulation techniques for patients undergoing biphasic abdominal computed tomography examinations |
| title_sort | comparison of radiation doses using weight based protocol and dose modulation techniques for patients undergoing biphasic abdominal computed tomography examinations |
| topic | Abdominal computed tomography dose modulation effective dose image quality |
| url | http://www.jmp.org.in/article.asp?issn=0971-6203;year=2009;volume=34;issue=4;spage=217;epage=222;aulast=Livingstone |
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