<b>Two-Dimensional Versus Three-Dimensional CT Scan for Aortic Measurement</b>

Dillavou, Ellen D.; Buck, David G.; Muluk, Satish C.; Makaroun, Michel S.

doi:10.1583/1545-1550(2003)010<0531:tvtcsf>2.0.co;2

Cited by 21 publications

(14 citation statements)

References 26 publications

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“…We found that intraclass correlation coefficients for diameter and volume measurements were excellent, which indicates that one AAA measurement is likely sufficient for the follow-up of patients with AAA. The correlation coefficients found in our study are slightly better than those previously reported in the literature (13,15,16). This is most likely the result of our having specially trained dedicated 3D imaging technologists and confirms the results of a previous study that showed improvement of 3D laboratory measurements with increasing technologist experience (24).…”

Section: Predictive Value Of Diameter and Volume Changes For Appearansupporting

confidence: 86%

What Is the Optimal Abdominal Aortic Aneurysm Sac Measurement on CT Images during Follow-up after Endovascular Repair?

et al. 2017

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Purpose To develop a computed tomographic (CT) angiographic postprocessing protocol with two- and three-dimensional measurements for follow-up of patients who underwent endovascular aortic repair. Materials and Methods This HIPAA-compliant institutional review board-approved retrospective study included 159 patients (129 men, 30 women; mean age ± standard deviation, 74.9 years ± 8.2) who underwent 824 CT examinations (median of five examinations per patient; range, two to 14) with unenhanced and arterial -phase imaging performed between September 2004 and March 2015. The largest diameter on the axial plane; coronal, sagittal, and maximal diameter perpendicular to the reconstructed centerline; volume of the abdominal aortic aneurysm sac; and volume from the lowest renal artery to the aortic bifurcation and to the common iliac artery bifurcation were measured. Endoleaks on contrast material-enhanced images were considered the reference standard, and the predictive value of diameter and volume changes was analyzed. Intraclass correlation was used to compare diameters and volumes. Results All diameters and volumes showed excellent correlation (intraclass coefficient, 0.95 and 0.94, respectively). Average interobserver difference for diameters and volumes was 2%-3% and 4%-12%, respectively. Endoleaks were observed in 80 (50%) of 159 patients (59 [74%] at initial and 21 [26%] at later CT angiography). New endo-leaks were associated with increased aneurysm size measured as the largest diameter on the axial plane (P = .04) and perpendicular to the centerline (P = .01), and volume was measured from the lowest renal artery to the aortic bifurcation (P = .03) and to the common iliac artery bifurcation (P = .01). With a 5% size threshold, sensitivity and specificity for detection of endoleaks was optimal for centerline diameter (64.3% and 81.7%, respectively) and volume from the lowest renal artery to the common iliac artery bifurcation (57.1% and 63.5%). Conclusion The maximal diameter and volume of an abdominal aortic aneurysm sac can be used for temporal monitoring after endovascular aortic repair, with excellent correlation and interobserver agreement. An increase in the centerline diameter and volume from the lowest renal artery to the iliac bifurcation were the most sensitive criteria for detecting endoleaks. RSNA, 2017 Online supplemental material is available for this article.

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Section: Predictive Value Of Diameter and Volume Changes For Appearansupporting

confidence: 86%

What Is the Optimal Abdominal Aortic Aneurysm Sac Measurement on CT Images during Follow-up after Endovascular Repair?

et al. 2017

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“…1 Distortion in the axial image introduced by aortic tortuosity may be minimized by measuring the lesser diameter. 90 Interobserver variability is always higher than intraobserver variability, 91,92 suggesting that follow-up of aortic disease in a specific patient should be performed by a single experienced observer. 88,89 In summary, CTA is one of the most used techniques in the assessment of aortic diseases.…”

Section: F Ctmentioning

confidence: 99%

Multimodality Imaging of Diseases of the Thoracic Aorta in Adults: From the American Society of Echocardiography and the European Association of Cardiovascular Imaging

Goldstein

Evangelista

Abbara

et al. 2015

Journal of the American Society of Echocardiography

543

434

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“…This measurement should be taken outer wall to outer wall in lateral and anteroposterior projection. There is still some controversy if measurement should be taken on axial slices or longitudinal reformation perpendicularly to aneurysm central line [70][71][72]. Then CTA will display the relation ship of AAA with renal, mesenteric and celiac arteries and aneurysm extension in iliac arteries.…”

Section: Abdominal Aortic Aneurysmmentioning

confidence: 99%

Management of peripheral arterial disease: Role of computed tomography angiography and magnetic resonance angiography

et al. 2011

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Two-Dimensional Versus Three-Dimensional CT Scan for Aortic Measurement

Abstract: Minor axis measurements on axial CT scan can substitute for diameters obtained from 3D reconstructions in most clinical situations.

Cited by 21 publications

References 26 publications

What Is the Optimal Abdominal Aortic Aneurysm Sac Measurement on CT Images during Follow-up after Endovascular Repair?

What Is the Optimal Abdominal Aortic Aneurysm Sac Measurement on CT Images during Follow-up after Endovascular Repair?

Multimodality Imaging of Diseases of the Thoracic Aorta in Adults: From the American Society of Echocardiography and the European Association of Cardiovascular Imaging

Management of peripheral arterial disease: Role of computed tomography angiography and magnetic resonance angiography

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