Non-contrast-enhanced MR angiography for detecting arteriovenous fistula dysfunction in haemodialysis patients

Jin, Wen-Tao; Zhang, G.F.; Liu, H.C.; Zhang, H.; Li, B.; Zhu, Xianglan

doi:10.1016/j.crad.2015.04.005

Cited by 7 publications

(5 citation statements)

References 29 publications

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“…Generally, this is the way a vascular access, called an arteriovenous fistula (AVF), is created and done by a surgical operation in which arteries and veins are connected together. As mentioned in another study [ 2 , 3 ], AVF provides the lowest risk of death caused by inadequate vascular access, low complication rate, long term use, and lower cost compared to other (arteriovenous graft and central venous catheter) vascular access options. Ready to use (mature) AVF are characterized by the formation of venous distension and arterialization after 6–12 weeks.…”

Section: Introductionmentioning

confidence: 99%

A Novel Classification Technique of Arteriovenous Fistula Stenosis Evaluation Using Bilateral PPG Analysis

Stephanus

2016

Micromachines

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The most common treatment for end-stage renal disease (ESRD) patients is the hemodialysis (HD). For this kind of treatment, the functional vascular access that called arteriovenous fistula (AVF) is done by surgery to connect the vein and artery. Stenosis is considered the major cause of dysfunction of AVF. In this study, a noninvasive approach based on asynchronous analysis of bilateral photoplethysmography (PPG) with error correcting output coding support vector machine one versus rest (ESVM-OVR) for the degree of stenosis (DOS) evaluation is proposed. An artificial neural network (ANN) classifier is also applied to compare the performance with the proposed system. The testing data has been collected from 22 patients at the right and left thumb of the hand. The experimental results indicated that the proposed system could provide positive predictive value (PPV) reaching 91.67% and had higher noise tolerance. The system has the potential for providing diagnostic assistance in a wearable device for evaluation of AVF stenosis.

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Section: Introductionmentioning

confidence: 99%

A Novel Classification Technique of Arteriovenous Fistula Stenosis Evaluation Using Bilateral PPG Analysis

Stephanus

2016

Micromachines

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“…When TOF-MRA was applied for cerebrovasculature, a presaturation pulse was used inferior to the slice to suppress the signal from venous blood, and the presaturation bands were omitted in our study to allow simultaneous visualization of both arterial and venous blood flow. Jin et al assessed the diagnostic value of TOF-MRA in comparison to multidetector CTA, and the study yielded a 96.4% sensitivity and a 94.3–97.1% specificity ( 27 ). In our study, the region-based analyses of significant stenosis (50–100%) for TOF-MRA showed a 99.1% sensitivity and a 93.1% specificity, which is consistent with the previous study.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of 3.0T magnetic resonance angiography for the detection of arteriovenous fistula dysfunction in hemodialysis patients requiring interventional therapy: a prospective study

Wei,

Yu,

Bao

et al. 2024

Quant Imaging Med Surg

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Background Color Doppler ultrasonography (CDUS) is feasible to detect arteriovenous fistula (AVF) dysfunction in hemodialysis patients but is not sufficient to map the structure of fistula required for interventions. This study is designed to evaluate the diagnostic accuracy of three-dimensional time-of-flight magnetic resonance angiography (TOF-MRA) at 3.0T versus CDUS for AVF dysfunction, by using digital subtraction angiography (DSA) as reference. Methods This prospective study enrolled 68 consecutive patients with dysfunctional AVF who underwent both CDUS and TOF-MRA at Shanghai Sixth People’s Hospital affiliated to Shanghai Jiao Tong University School of Medicine. The analysis of the dysfunctional AVFs was divided into three regions: the feeding artery, fistula and draining veins. In the whole- and per-regional-based analyses, two observers who were blinded to the clinical and DSA results independently analyzed all CDUS and TOF-MRA datasets. The image quality and stenosis severity of the lesions on TOF-MRA were evaluated. A receiver operating characteristic curve was applied to analyze the detection of AVF dysfunction with TOF-MRA. Results A total of 204 vessel regions were evaluated. The whole-region-based image quality of TOF-MRA was poorer in patients with a total occlusion (1.8±0.8) than in those with stenosis (2.7±0.6, P<0.001). In the whole-region analyses, TOF-MRA had higher sensitivity [99.1% (94.6–100.0%) vs . 82.9% (74.6–89.0%), P<0.001] and similar specificity [93.1% (85.0–97.1%) vs . 94.3% (86.5–97.9%), P=0.755] than CDUS. The per-region-based analyses showed that TOF-MRA yielded higher sensitivity [fistula region, 98.1% (88.4–99.9%) vs . 80.8% (67.0–89.9%); P=0.004; draining vein region, 100.0% (92.5–100.0%) vs . 85.0% (72.9–2.5%); P=0.003] and similar specificity [fistula region, 88.2% (62.3–97.8%) vs . 88.2% (62.3–97.9%); P>0.99; draining vein region, 100.0% (59.8–100.0%) vs . 87.5% (46.7–99.3%); P>0.99] than CDUS. Sensitivity and specificity of TOF-MRA were comparable to those of CDUS in feeding artery region. Conclusions TOF-MRA is a feasible and accurate method to display AVF dysfunction in hemodialysis patients, and this method might fulfill the endovascular treatment planning requirements.

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“…Use of black-blood techniques in lumen measurements of AVFs and CFD modeling of wall shear stress has been demonstrated. 11 However, 3D black-blood scans take longer to perform, 12 resulting in scan times that can be uncomfortable for some patients.…”

Section: Discussionmentioning

confidence: 99%

Experimental Assessment of Two Non-Contrast MRI Sequences Used for Computational Fluid Dynamics: Investigation of Consistency Between Techniques

MacDonald

Hellmuth

Priba

et al. 2020

Cardiovasc Eng Tech

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Purpose-Recent studies have noted a degree of variance between the geometries segmented by different groups from 3D medical images that are used in computational fluid dynamics (CFD) simulations of patient-specific cardiovascular systems. The aim of this study was to determine if the applied sequence of magnetic resonance imaging (MRI) also introduced observable variance in CFD results. Methods-Using a series of phantoms MR images of vessels of known diameter were assessed for the time-of-flight and multi-echo data image combination sequences. Following this, patient images of arterio-venous fistulas were acquired using the same sequences. Comparisons of geometry were made using the phantom and patient images, and of wall shear stress quantities using the CFD results from the patient images. Results-Phantom images showed deviations in diameter between 0 and 15% between the sequences, depending on vessel diameter. Patient images showed different geometrical features such as narrowings that were not present on both sequences. Distributions of wall shear stress (WSS) quantities differed from simulations between the geometries obtained from the sequences. Conclusion-In conclusion, choosing different MRI sequences resulted in slightly different geometries of the same anatomy, which led to compounded errors in WSS quantities from CFD simulation.

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Non-contrast-enhanced MR angiography for detecting arteriovenous fistula dysfunction in haemodialysis patients

Cited by 7 publications

References 29 publications

A Novel Classification Technique of Arteriovenous Fistula Stenosis Evaluation Using Bilateral PPG Analysis

A Novel Classification Technique of Arteriovenous Fistula Stenosis Evaluation Using Bilateral PPG Analysis

Accuracy of 3.0T magnetic resonance angiography for the detection of arteriovenous fistula dysfunction in hemodialysis patients requiring interventional therapy: a prospective study

Experimental Assessment of Two Non-Contrast MRI Sequences Used for Computational Fluid Dynamics: Investigation of Consistency Between Techniques

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