PLUS: Open-Source Toolkit for Ultrasound-Guided Intervention Systems

Lassó, András; Heffter, Tamas; Rankin, Adam; Pintér, Csaba; Ungi, Tamás; Fichtinger, Gabor

doi:10.1109/tbme.2014.2322864

Cited by 337 publications

(209 citation statements)

References 41 publications

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“…4. At the lowest level, the public software library for the ultrasound (PLUS) 23 toolkit communicates with the ultrasound imaging and spatial tracking hardware, synchronizes, interpolates, processes the data, and then streams the live data through standard OpenIGTLink protocol 24 to a navigation computer with SlicerIGT. Volume reconstruction is implemented in PLUS and it can run on either the ultrasound computer or the navigation computer.…”

Section: Methodsmentioning

confidence: 99%

Hole filling with oriented sticks in ultrasound volume reconstruction

et al. 2015

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Abstract. Volumes reconstructed from tracked planar ultrasound images often contain regions where no information was recorded. Existing interpolation methods introduce image artifacts and tend to be slow in filling large missing regions. Our goal was to develop a computationally efficient method that fills missing regions while adequately preserving image features. We use directional sticks to interpolate between pairs of known opposing voxels in nearby images. We tested our method on 30 volumetric ultrasound scans acquired from human subjects, and compared its performance to that of other published hole-filling methods. Reconstruction accuracy, fidelity, and time were improved compared with other methods.

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Section: Methodsmentioning

confidence: 99%

Hole filling with oriented sticks in ultrasound volume reconstruction

et al. 2015

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“…Furthermore, the recognition accuracy rate of ultrasound image processing of the N-wedge can be up to 92% in each group of 15 experiments. The segmentation time of other calibration methods can be determined using fCal software, which is freely available in the PLUS (Public software Library for UltraSound image research) toolkit developed by the Perklab group at Queen's University [25].…”

Section: Image Segmentation Timementioning

confidence: 99%

Closed-form freehand 3D ultrasound spatial calibration based on N-wedge phantom

Lin¹,

Wang²,

Guo³

et al. 2018

EasyChair Preprints

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Freehand 3D ultrasound imaging system has many applications in healthcare. The purpose of ultrasound calibration is to determine the transformation matrix from the ultrasound probe coordinate system to the ultrasound image coordinate system. In this study, we propose a variant of the widely used N-wire phantom called the N-wedge phantom, which is a combination phantom of wires and wedges. Prototypes of the two phantoms were produced, and we compared the N-wedge phantom and N-wire phantom in terms of their precision, accuracy, calibration time, ease of use, and ease of manufacture. The mean values of the precision of the N-wedge phantom and N-wire phantom at the center point are 0.67 mm and 0.74 mm, respectively, while the mean values of the accuracy of the phantoms are 1.73 mm and 1.89 mm, respectively. Calibration using the two phantoms can meet the requirements for medical application; however, the N-wedge phantom is easier to use and can be manufactured without sacrificing precision and accuracy.

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“…(1). We used the method available in the PLUS library, 26 a freely available, open-source library that includes well-tested calibration software and instructions for building the associated calibration phantom. A modified PLUS phantom, integrated with an EM sensor and equipped with three "N" shapes (also called Nwires), was 3-D printed.…”

Section: Ems Us Usmentioning

confidence: 99%

Laparoscopic stereoscopic augmented reality: toward a clinically viable electromagnetic tracking solution

et al. 2016

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Abstract. The purpose of this work was to develop a clinically viable laparoscopic augmented reality (AR) system employing stereoscopic (3-D) vision, laparoscopic ultrasound (LUS), and electromagnetic (EM) tracking to achieve image registration. We investigated clinically feasible solutions to mount the EM sensors on the 3-D laparoscope and the LUS probe. This led to a solution of integrating an externally attached EM sensor near the imaging tip of the LUS probe, only slightly increasing the overall diameter of the probe. Likewise, a solution for mounting an EM sensor on the handle of the 3-D laparoscope was proposed. The spatial image-to-video registration accuracy of the AR system was measured to be 2.59 AE 0.58 mm and 2.43 AE 0.48 mm for the leftand right-eye channels, respectively. The AR system contributed 58-ms latency to stereoscopic visualization. We further performed an animal experiment to demonstrate the use of the system as a visualization approach for laparoscopic procedures. In conclusion, we have developed an integrated, compact, and EM tracking-based stereoscopic AR visualization system, which has the potential for clinical use. The system has been demonstrated to achieve clinically acceptable accuracy and latency. This work is a critical step toward clinical translation of AR visualization for laparoscopic procedures.

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PLUS: Open-Source Toolkit for Ultrasound-Guided Intervention Systems

Cited by 337 publications

References 41 publications

Hole filling with oriented sticks in ultrasound volume reconstruction

Hole filling with oriented sticks in ultrasound volume reconstruction

Closed-form freehand 3D ultrasound spatial calibration based on N-wedge phantom

Laparoscopic stereoscopic augmented reality: toward a clinically viable electromagnetic tracking solution

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