Percutaneous Renal Intervention: Comparison of 2-D and Time-Resolved 3-D (4-D) Ultrasound for Minimal Calyceal Dilation Using an Ultrasound Phantom and Fluoroscopic Control

John, Babbin; Rowland, David; Ratnam, Lakshmi; Walkden, Miles; Nayak, S.; Patel, Uday; Anson, Ken; Nassiri, D. K.

doi:10.1016/j.ultrasmedbio.2008.03.014

Cited by 8 publications

(2 citation statements)

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“…It is difficult to be accepted in clinical use. This problem may be solved by using the real-time 3DUS probes instead of the freehand method [22]. …”

Section: Resultsmentioning

confidence: 99%

Augmenting intraoperative ultrasound with preoperative magnetic resonance planning models for percutaneous renal access

Zhan

et al. 2012

BioMedical Engineering OnLine

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BackgroundUltrasound (US) is a commonly-used intraoperative imaging modality for guiding percutaneous renal access (PRA). However, the anatomy identification and target localization abilities of the US imaging are limited. This paper evaluates the feasibility and efficiency of a proposed image-guided PRA by augmenting the intraoperative US with preoperative magnetic resonance (MR) planning models.MethodsFirst, a preoperative surgical planning approach is presented to define an optimal needle trajectory using MR volume data. Then, a MR to US registration is proposed to transfer the preoperative planning into the intraoperative context. The proposed registration makes use of orthogonal US slices to avoid local minima while reduce processing time. During the registration, a respiratory gating method is used to minimize the impact of kidney deformation. By augmenting the intraoperative US with preoperative MR models and a virtual needle, a visual guidance is provided to guarantee the correct execution of the surgical planning. The accuracy, robustness and processing time of the proposed registration were evaluated by four urologists on human data from four volunteers. Furthermore, the PRA experiments were performed by the same four urologists on a kidney phantom. The puncture accuracy in terms of the needle-target distance was measured, while the perceptual quality in using the proposed image guidance was evaluated according to custom scoring method.ResultsThe mean registration accuracy in terms of the root mean square (RMS) target registration error (TRE) is 3.53 mm. The RMS distance from the registered feature points to their average is 0.81 mm. The mean operating time of the registration is 6'4". In the phantom evaluation, the mean needle-target distance is 2.08 mm for the left lesion and 1.85 mm for the right one. The mean duration for all phantom PRA tests was 4'26". According to the custom scoring method, the mean scores of the Intervention Improvement, Workflow Impact, and Clinical Relevance were 4.0, 3.3 and 3.9 respectively.ConclusionsThe presented image guidance is feasible and promising for PRA procedure. With careful setup it can be efficient for overcoming the limitation of current US-guided PRA.

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“…It is difficult to be accepted in clinical use. This problem may be solved by using the real-time 3DUS probes instead of the freehand method [22]. …”

Section: Resultsmentioning

confidence: 99%

Augmenting intraoperative ultrasound with preoperative magnetic resonance planning models for percutaneous renal access

Zhan

et al. 2012

BioMedical Engineering OnLine

View full text Add to dashboard Cite

show abstract

“…To overcome this problem, some investigators have used 3-dimensional (3D) US, and have reported that this method provides improved visualization of the needle tip, and more perceptible information on the spatial relationship between the needle tip and the target lesion. [3][4][5][6][7] However, 3D US techniques using mechanical acquisition have been reported to be relatively slow and complicated with regard to the acquisition of volumetric data. In addition, the reformatted planes obtained by the mechanical transducer, may show decreased resolution compared with the reference 2D image planes.…”

mentioning

confidence: 99%