Reduced scan range abdominopelvic CT in patients with suspected acute appendicitis - impact on diagnostic accuracy and effective radiation dose
Abstract Background To evaluate a reduced range CT protocol in patients with suspected acute appendicitis as compared to standard abdominal CT regarding diagnostic performance, effective radiation dose and organ doses. Methods In this study, we retrospectively included 90 patients (43 female, mean a...
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| Format: | Article |
| Language: | English |
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BMC
2019-01-01
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| Series: | BMC Medical Imaging |
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| Online Access: | http://link.springer.com/article/10.1186/s12880-019-0304-x |
| _version_ | 1818270519878746112 |
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| author | Dominik Zinsser Michael Maurer Phuong-Linh Do Jakob Weiß Mike Notohamiprodjo Fabian Bamberg Ahmed E. Othman |
| author_facet | Dominik Zinsser Michael Maurer Phuong-Linh Do Jakob Weiß Mike Notohamiprodjo Fabian Bamberg Ahmed E. Othman |
| author_sort | Dominik Zinsser |
| collection | DOAJ |
| description | Abstract Background To evaluate a reduced range CT protocol in patients with suspected acute appendicitis as compared to standard abdominal CT regarding diagnostic performance, effective radiation dose and organ doses. Methods In this study, we retrospectively included 90 patients (43 female, mean age 56.7 ± 17 years) with suspected acute appendicitis who underwent CT of abdomen and pelvis. From those CTs, we reconstructed images with a reduced scan range from L1 to the the pubic symphysis. Full range and reduced range datasets were assessed by two radiologists for i) coverage of the Appendix, ii) presence/absence of appendicitis and iii) presence of differential diagnoses. Furthermore, effective radiation doses as well as organ doses were calculated using a commercially available dose management platform (Radimetrics, Bayer HealthCare). Results The Appendix was covered by the reduced range CT in all cases. In 66 patients CT confirmed the presence of appendicitis. In 14 patients, other relevant differential diagnoses were identified by CT, whereas in 10 patients no relevant findings were detected. Both readers identified all patients with appendicitis on both full and reduced range CT. For reduced range CT, total effective dose was 39% lower than for full range CT (reduced range: 4.5 [1.9–11.2] vs. full range: 7.4 [3.3–18.8] mSv; p ≤ 0.001). Notably, a remarkable reduction of organ dose in the female breasts by 97% (0.1 [0.1–0.6] vs. 3.8 [0.5–18.8] mSv; p ≤ 0.001) and in the testicles in males by 81% (3.4 [0.7–32.7] vs. 17.6 [5.4–52.9] mSv; p ≤ 0.001) was observed for reduced range CT compared to full range CT. Conclusions In patients with suspected acute appendicitis, reduced range abdominopelvic CT results in a comparable diagnostic performance with a remarkable reduction of total effective radiation dose and organ doses (especially breast dose in female and testicle dose in male patients) as compared to full range CT. |
| first_indexed | 2024-12-12T21:11:35Z |
| format | Article |
| id | doaj.art-da074278ee32470ab1a2414775eca206 |
| institution | Directory Open Access Journal |
| issn | 1471-2342 |
| language | English |
| last_indexed | 2024-12-12T21:11:35Z |
| publishDate | 2019-01-01 |
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| series | BMC Medical Imaging |
| spelling | doaj.art-da074278ee32470ab1a2414775eca2062022-12-22T00:11:52ZengBMCBMC Medical Imaging1471-23422019-01-011911710.1186/s12880-019-0304-xReduced scan range abdominopelvic CT in patients with suspected acute appendicitis - impact on diagnostic accuracy and effective radiation doseDominik Zinsser0Michael Maurer1Phuong-Linh Do2Jakob Weiß3Mike Notohamiprodjo4Fabian Bamberg5Ahmed E. Othman6Department of Diagnostic and Interventional Radiology, Eberhard-Karls-University Tuebingen, University Hospital TuebingenDepartment of Diagnostic and Interventional Radiology, Eberhard-Karls-University Tuebingen, University Hospital TuebingenDepartment of Diagnostic and Interventional Radiology, Eberhard-Karls-University Tuebingen, University Hospital TuebingenDepartment of Diagnostic and Interventional Radiology, Eberhard-Karls-University Tuebingen, University Hospital TuebingenDepartment of Diagnostic and Interventional Radiology, Eberhard-Karls-University Tuebingen, University Hospital TuebingenDepartment of Diagnostic and Interventional Radiology, Eberhard-Karls-University Tuebingen, University Hospital TuebingenDepartment of Diagnostic and Interventional Radiology, Eberhard-Karls-University Tuebingen, University Hospital TuebingenAbstract Background To evaluate a reduced range CT protocol in patients with suspected acute appendicitis as compared to standard abdominal CT regarding diagnostic performance, effective radiation dose and organ doses. Methods In this study, we retrospectively included 90 patients (43 female, mean age 56.7 ± 17 years) with suspected acute appendicitis who underwent CT of abdomen and pelvis. From those CTs, we reconstructed images with a reduced scan range from L1 to the the pubic symphysis. Full range and reduced range datasets were assessed by two radiologists for i) coverage of the Appendix, ii) presence/absence of appendicitis and iii) presence of differential diagnoses. Furthermore, effective radiation doses as well as organ doses were calculated using a commercially available dose management platform (Radimetrics, Bayer HealthCare). Results The Appendix was covered by the reduced range CT in all cases. In 66 patients CT confirmed the presence of appendicitis. In 14 patients, other relevant differential diagnoses were identified by CT, whereas in 10 patients no relevant findings were detected. Both readers identified all patients with appendicitis on both full and reduced range CT. For reduced range CT, total effective dose was 39% lower than for full range CT (reduced range: 4.5 [1.9–11.2] vs. full range: 7.4 [3.3–18.8] mSv; p ≤ 0.001). Notably, a remarkable reduction of organ dose in the female breasts by 97% (0.1 [0.1–0.6] vs. 3.8 [0.5–18.8] mSv; p ≤ 0.001) and in the testicles in males by 81% (3.4 [0.7–32.7] vs. 17.6 [5.4–52.9] mSv; p ≤ 0.001) was observed for reduced range CT compared to full range CT. Conclusions In patients with suspected acute appendicitis, reduced range abdominopelvic CT results in a comparable diagnostic performance with a remarkable reduction of total effective radiation dose and organ doses (especially breast dose in female and testicle dose in male patients) as compared to full range CT.http://link.springer.com/article/10.1186/s12880-019-0304-xAppendicitisComputed tomographyScan rangeRadiation dose |
| spellingShingle | Dominik Zinsser Michael Maurer Phuong-Linh Do Jakob Weiß Mike Notohamiprodjo Fabian Bamberg Ahmed E. Othman Reduced scan range abdominopelvic CT in patients with suspected acute appendicitis - impact on diagnostic accuracy and effective radiation dose BMC Medical Imaging Appendicitis Computed tomography Scan range Radiation dose |
| title | Reduced scan range abdominopelvic CT in patients with suspected acute appendicitis - impact on diagnostic accuracy and effective radiation dose |
| title_full | Reduced scan range abdominopelvic CT in patients with suspected acute appendicitis - impact on diagnostic accuracy and effective radiation dose |
| title_fullStr | Reduced scan range abdominopelvic CT in patients with suspected acute appendicitis - impact on diagnostic accuracy and effective radiation dose |
| title_full_unstemmed | Reduced scan range abdominopelvic CT in patients with suspected acute appendicitis - impact on diagnostic accuracy and effective radiation dose |
| title_short | Reduced scan range abdominopelvic CT in patients with suspected acute appendicitis - impact on diagnostic accuracy and effective radiation dose |
| title_sort | reduced scan range abdominopelvic ct in patients with suspected acute appendicitis impact on diagnostic accuracy and effective radiation dose |
| topic | Appendicitis Computed tomography Scan range Radiation dose |
| url | http://link.springer.com/article/10.1186/s12880-019-0304-x |
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