Full-Volume Assessment of Abdominal Aortic Aneurysms by 3-D Ultrasound and Magnetic Tracking

Zielinski, Alexander Hakon; Bredahl, Kim; Ghulam, Qasam; Rouet, Laurence; Dufour, Cécile; Sillesen, Henrik; Eiberg, Jonas

doi:10.1016/j.ultrasmedbio.2020.09.002

Cited by 11 publications

(4 citation statements)

References 15 publications

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“…The average length of the captured region that was segmented was 60 mm ± 21 for volunteers and 65 mm ± 15 for AAA patients. Due to bowel gas and obesity, the image quality can locally be reduced, leading to incomplete measurements, as has previously been reported in studies with freehand 2D US ( 14 , 15 , 17 ). However, similar challenges occur with conventional 2D US imaging or 3D US imaging with a matrix array.…”

Section: Discussionmentioning

confidence: 93%

“…Another 3D approach is freehand 2D US with 3D image reconstruction, where an operator moves a 2D US transducer, that is connected to a probe tracker, after which a single 3D volume is reconstructed offline. Compared to imaging with a matrix array, this approach has lower costs, higher volume quality and an improved field of view (14)(15)(16)(17). So far, with electrocardiogram-gated (ECG-gated) or non-ECG-gated freehand 2D US of AAAs, the patient specific geometry and volume have been assessed, from which the vessel diameter and area at the maximal aneurysm diameter location have been computed (14,15,(17)(18)(19).…”

Section: Introductionmentioning

confidence: 99%

“…Compared to imaging with a matrix array, this approach has lower costs, higher volume quality and an improved field of view (14)(15)(16)(17). So far, with electrocardiogram-gated (ECG-gated) or non-ECG-gated freehand 2D US of AAAs, the patient specific geometry and volume have been assessed, from which the vessel diameter and area at the maximal aneurysm diameter location have been computed (14,15,(17)(18)(19). It was previously demonstrated that reproducible AAA volume measurements can be obtained from 3D reconstructions obtained with freehand 2D US (17).…”

Section: Introductionmentioning

confidence: 99%

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Local and global distensibility assessment of abdominal aortic aneurysms in vivo from probe tracked 2D ultrasound images

Jansen

Schwab²,

Vosse³

et al. 2023

Front. Med. Technol.

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Rupture risk estimation of abdominal aortic aneurysm (AAA) patients is currently based on the maximum diameter of the AAA. Mechanical properties that characterize the mechanical state of the vessel may serve as a better rupture risk predictor. Non-electrocardiogram-gated (non-ECG-gated) freehand 2D ultrasound imaging is a fast approach from which a reconstructed volumetric image of the aorta can be obtained. From this 3D image, the geometry, volume, and maximum diameter can be obtained. The distortion caused by the pulsatility of the vessel during the acquisition is usually neglected, while it could provide additional quantitative parameters of the vessel wall. In this study, a framework was established to semi-automatically segment probe tracked images of healthy aortas (N = 10) and AAAs (N = 16), after which patient-specific geometries of the vessel at end diastole (ED), end systole (ES), and at the mean arterial pressure (MAP) state were automatically assessed using heart frequency detection and envelope detection. After registration AAA geometries were compared to the gold standard computed tomography (CT). Local mechanical properties, i.e., compliance, distensibility and circumferential strain, were computed from the assessed ED and ES geometries for healthy aortas and AAAs, and by using measured brachial pulse pressure values. Globally, volume, compliance, and distensibility were computed. Geometries were in good agreement with CT geometries, with a median similarity index and interquartile range of 0.91 [0.90–0.92] and mean Hausdorff distance and interquartile range of 4.7 [3.9–5.6] mm. As expected, distensibility (Healthy aortas: 80 ± 15·10−3 kPa−1; AAAs: 29 ± 9.6·10−3 kPa−1) and circumferential strain (Healthy aortas: 0.25 ± 0.03; AAAs: 0.15 ± 0.03) were larger in healthy vessels compared to AAAs. Circumferential strain values were in accordance with literature. Global healthy aorta distensibility was significantly different from AAAs, as was demonstrated with a Wilcoxon test (p-value = 2·10−5). Improved image contrast and lateral resolution could help to further improve segmentation to improve mechanical characterization. The presented work has demonstrated how besides accurate geometrical assessment freehand 2D ultrasound imaging is a promising tool for additional mechanical property characterization of AAAs.

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Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Local and global distensibility assessment of abdominal aortic aneurysms in vivo from probe tracked 2D ultrasound images

Jansen

Schwab²,

Vosse³

et al. 2023

Front. Med. Technol.

View full text Add to dashboard Cite

show abstract

“…Therefore, a variety of US volume reconstruction techniques from a set of 2D US frames have been proposed to compensate for this limitation [4]. Among these methods, mechanical scanning techniques [5] are opposed to freehand scanning approach based on tracking devices [6,7]. The tracking devices can be optical or electromagnetic and requires a sensor to be attached to the probe.…”

Section: Introductionmentioning

confidence: 99%

Stretched reconstruction based on 2D freehand ultrasound for peripheral artery imaging

Leblanc

Lalys²,

Tollenaere

et al. 2022

Int J CARS

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Purpose. Endovascular revascularization is becoming the established first-line treatment of peripheral artery disease (PAD). Ultrasound (US) imaging is used pre-operatively to make the first diagnosis and is often followed by a CT angiography (CTA). US provides a non-invasive and non-ionizing method for the visualization of arteries and lesion(s). This paper proposes to generate a 3D stretched reconstruction of the femoral artery from a sequence of 2D US B-mode frames.Methods. The proposed method is solely image-based. A Mask-RCNN is used to segment the femoral artery on the 2D US frames. In-plane registration is achieved by aligning the artery segmentation masks. Subsequently, a convolutional neural network (CNN) predicts the out-of-plane translation. After processing all input frames and re-sampling the volume according to the vessel's centerline, the whole femoral artery can be visualized on a single slice of the resulting stretched view.Results. 111 tracked US sequences of the left or right femoral arteries have been acquired on 18 healthy volunteers. 5-fold cross-validation was used to validate our method and achieve an absolute mean error of 0.28 ± 0.28 mm and a median drift error of 8.98%. Conclusion.This study demonstrates the feasibility of freehand US stretched reconstruction following a deep learning strategy for imaging the femoral artery. Stretched views are generated and can give rich diagnosis information in the pre-operative planning of PAD procedures. This visualization could replace traditional 3D imaging in the pre-operative planning process, and during the pre-operative diagnosis phase, to identify, locate, and size stenosis/thrombosis lesions.

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Clinical Validation of Three-Dimensional Ultrasound for Diagnosis of Abdominal Aortic Aneurysm

Sillesen¹,

Eiberg²

2021

Noninvasive Vascular Diagnosis

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Full-Volume Assessment of Abdominal Aortic Aneurysms by 3-D Ultrasound and Magnetic Tracking

Cited by 11 publications

References 15 publications

Local and global distensibility assessment of abdominal aortic aneurysms in vivo from probe tracked 2D ultrasound images

Local and global distensibility assessment of abdominal aortic aneurysms in vivo from probe tracked 2D ultrasound images

Stretched reconstruction based on 2D freehand ultrasound for peripheral artery imaging

Clinical Validation of Three-Dimensional Ultrasound for Diagnosis of Abdominal Aortic Aneurysm

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