Freehand 3-D Ultrasound Imaging: A Systematic Review

Mozaffari, Mohammad; Lee, Won Sook

doi:10.1016/j.ultrasmedbio.2017.06.009

Cited by 108 publications

(69 citation statements)

References 231 publications

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“…As an effective, prevalent means of inspection in clinic, ultrasound has the advantages of low psychological pressure and high cost‐performance for patients. [ 17 ] Also, this technique has widely been applied to noninvasively track the in vivo behaviors of biomedical materials/devices. [ 17a,17b ] Figure shows the representative ultrasonic images at various time points and the variation curves of hydrogel volume fraction with degradation time.…”

Section: Resultsmentioning

confidence: 99%

Visualizing the In Vivo Evolution of an Injectable and Thermosensitive Hydrogel Using Tri‐Modal Bioimaging

Chen

Zhang

et al. 2020

Small Methods

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Degradability of biomaterials brings many opportunities as well as great challenges to their clinical applications. However, reports of systematic in vivo biodegradation are rather limited due to lack of adequate methodology for real‐time observations. Herein, a tri‐modal bioimaging technique is developed, enabling real time monitoring of biodegradation of synthetic polymers in vivo. The demonstrated material is a successful preclinical poly(lactic acid‐co‐glycolic acid)‐b‐poly(ethylene glycol)‐b‐poly(lactic acid‐co‐glycolic acid) thermosensitive hydrogel that undergoes a spontaneous sol–gel transition upon heating. A macromolecular fluorescence probe and a contrast agent of magnetic resonance imaging (MRI) are designed and synthesized. After subcutaneous injection of the hydrogel containing the two probes into mice, the degradation behaviors of the material are longitudinally and noninvasively tracked via the collaborative application of ultrasound, fluorescence, and MRI. Integrating the noninvasive imaging with the traditional anatomic observations, a three‐stage degradation mechanism of such a hydrogel is proposed for the first time. Also, the dissolved polymers and degradation products in the body are mainly eliminated via liver, gallbladder, and spleen. This work has great value for promoting the future clinical application of these kind of promising hydrogels. Meanwhile, this technological platform provides beneficial inspiration and methodology to investigate in vivo fate of biomaterials.

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Section: Resultsmentioning

confidence: 99%

Visualizing the In Vivo Evolution of an Injectable and Thermosensitive Hydrogel Using Tri‐Modal Bioimaging

Chen

Zhang

et al. 2020

Small Methods

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“…The freehand method has advantages over the use of a 3D US transducer like lower cost, higher volume quality and improved field of view [40]. Bidimensional transducers already on the market can be used for 3D ultrasound scanning having proper 3D modeling techniques ( Figures 20, 21,22).…”

Section: The Advantages Of a 3d Free Hand Ultrasound Scannermentioning

confidence: 99%

“…The main advantages of the 3-D domain for US systems in comparison to 2-D images: visualization of the entire structure of an organ in three dimensions, less dependence on an operator, orientation-independent visualization, measurement of quantitative attributes in three dimensions, repeatability of ROI examination, fusion with other 3-D image modalities [40].…”

Section: S31mentioning

confidence: 99%

Periodontal evaluation using a non-invasive imaging method (ultrasonography)

Chifor

Badea

Chifor

et al. 2019

Medicine and Pharmacy Reports

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The periodontal disease and gingival bleeding are highly prevalent in the adult population worldwide. The World Health Organization (WHO) data shows that 90–100% of the 34-year-old adults present gingival inflammation. Therefore, an investigation method is required to allow the assessment of the periodontal disease as well as the monitoring of the evolution of the gingival inflammation after periodontal treatments. Non-invasive and operator-independent methods for periodontal examination are necessary for diagnosing and monitoring the periodontal disease. The periodontal ultrasonography is a reliable technique for visualizing the anatomical elements which are necessary to diagnose the periodontal status. Using this imaging technique the dentino-enamel junction, the cortical bone, the radicular surface from the crown to the alveolar bone, the gingival tissue can be seen without interfering with those elements during the examination. Also, calculus visualization is possible before and after scaling in order to evaluate the quality of the treatment. Using 2D ultrasonography is not feasible in dental practice as it requires extensive experience and is also time consuming. The reproducibility of the 2D slices is very difficult in order to have the possibility to compare different investigations efficiently. 3D reconstructions of the periodontal tissue can be a very good alternative to eliminate the operator dependence. Ultrasonography allows the practitioner to visualize the anatomic elements involved in making a periodontal diagnosis. It also allows tracking of subsequent changes. This method is not commonly used for periodontal examination and further studies are required. Previous studies show that ultrasonography can be a reliable non-invasive method to diagnose and monitor the periodontal disease.

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“…As for the real-time system, there is a need to synchronize the image captured, position and orientation, and the time [17]. This synchronization process is also known as the temporal calibration [18].…”

Section: Data Acquisitionmentioning

confidence: 99%

“…The volume reconstruction methods are the most important part in the 3D ultrasound reconstruction process, which involved the implementation of interpolation and approximation algorithm to get the 3D volume data and put them in a 3D volume grid based on the spatial information acquired from the tracking system. The volume reconstruction also aims to reduce computational requirements without damaging or losing the underlying shape of the data [18]. Before the volume reconstruction methods start, the coordinate system and volume grid of reconstructed volume need to be established, such as volume size, axes of volume, origin of axes, and the size of voxel [23].…”

Section: Volume Reconstructionmentioning

confidence: 99%

A Survey on 3D Ultrasound Reconstruction Techniques

Mohamed¹,

Siang²

2019

Artificial Intelligence - Applications in Medicine and Biology

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This book chapter aims to discuss the 3D ultrasound reconstruction and visualization. First, the various types of 3D ultrasound system are reviewed, such as mechanical, 2D array, position tracking-based freehand, and untrackedbased freehand. Second, the 3D ultrasound reconstruction technique or pipeline used by the current existing system, which includes the data acquisition, data preprocessing, reconstruction method and 3D visualization, is discussed. The reconstruction method and 3D visualization will be emphasized. The reconstruction method includes the pixel-based method, volume-based method, and function-based method, accompanied with their benefits and drawbacks. In the 3D visualization, methods such as multiplanar reformatting, volume rendering, and surface rendering are presented. Lastly, its application in the medical field is reviewed as well.

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Freehand 3-D Ultrasound Imaging: A Systematic Review

Cited by 108 publications

References 231 publications

Visualizing the In Vivo Evolution of an Injectable and Thermosensitive Hydrogel Using Tri‐Modal Bioimaging

Visualizing the In Vivo Evolution of an Injectable and Thermosensitive Hydrogel Using Tri‐Modal Bioimaging

Periodontal evaluation using a non-invasive imaging method (ultrasonography)

A Survey on 3D Ultrasound Reconstruction Techniques

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