Application of color-coded quantitative digital subtraction angiography in predicting the outcomes of immediate type I and type III endoleaks

Zhou, Min; Su, Zijie; Shi, Zhenyu; Fu, Weiguo; Meng, Xiangjian; Wang, Yonggang; Guo, Baolei; Huang, Kaiyi

doi:10.1016/j.jvs.2016.11.048

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…The median cumulative dose-area product (DAP) during TEVAR was 26,664.95 μGy•m 2 (range, 13,355-46,996 μGy•m 2 ). In total, 102 DSA series, including 51 pre-operative and 51 post-operative imaging data, were [1] and ROI [5] located in the upper pole of the bilateral renal cortex, ROI [2] and ROI [6] located in the midpole of the bilateral renal cortex, ROI [3] and ROI [7] located in the lower pole of the bilateral renal cortex, and ROI [4] and ROI [8] located in the bilateral renal arteries. successfully post-processed.…”

Section: Resultsmentioning

confidence: 99%

“…(I) ROI area: area of the ROI (mm 2 ); ROIs were defined as follows (Figure 3): (I) Ref ROI: located in the true lumen of the abdominal aorta near T12 and kept constant for each measurement; (II) ROI [1] and ROI [5]: located in the upper pole of the bilateral renal cortex; (III) ROI [2] and ROI [6]: located in the mid-pole of the bilateral renal cortex; (IV) ROI [3] and ROI [7]: located in the lower pole of the bilateral renal cortex; and (V) ROI [4] and ROI [8]: located in the bilateral renal arteries. For a more accurate evaluation of renal perfusion, ROIs were drawn in the kidney cortex area that was regarded as parenchyma with little interference from overlapping vessels.…”

Section: Image Post-processingmentioning

confidence: 99%

“…syngo iFlow (Siemens Healthineers, Forchheim, Germany) is a digital color-coded DSA and represents a novel angiography imaging tool for instant intra-operative quantitative analysis. Previous studies have reported the application and practical value of syngo iFlow in evaluating the transcatheter embolization of tumors and interventional therapies for cerebrovascular diseases (4)(5)(6).…”

Section: Introductionmentioning

confidence: 99%

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Quantitative analysis of renal blood flow during thoracic endovascular aortic repair in type B aortic dissection using syngo iFlow

Fang

Zhao

Luo

et al. 2021

Quant Imaging Med Surg

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Background: Currently, the thoracic endovascular aortic repair is the recommended clinical treatment for type B aortic dissections. Unfortunately, malperfusion or ischemia of the kidneys is a major complication of type B aortic dissections. Despite this, few studies have focused on the effects of thoracic endovascular aortic repair on blood flow in renal arteries and parenchyma. This current investigation used novel realtime imaging software to quantitatively analyze the hemodynamic changes in renal artery blood flow and perfusion before and after stent graft placement.Methods: A total of 51 patients with type B aortic dissection undergoing thoracic endovascular aortic repair between April 2017 and September 2019 were retrospectively recruited. The pre-and post-procedural digital subtraction angiography images were converted into color-coded maps using syngo iFlow for quantitative comparison. Time-intensity curves and related parameters, including the average peak ratio (avg.Pr), average delayed time to peak (avg.dTTP), and average area under the curve ratio (avg.AUCr) of the renal arteries and renal cortex were obtained and analyzed. Wilcoxon signed-rank test was used to compare iFlow parameters before and after endovascular repair. Spearman correlation analyses were performed to study iFlow parameters and renal function parameters and the estimated glomerular filtration rate (eGFR) and blood urea nitrogen (BUN).Results: A total of 102 images including 51 pre-operative and 51 post-operative image datasets were successfully post-processed. Following endovascular repair, syngo iFlow showed a significant 33.0% increase in avg.Pr (P<0.001) and a significant 35.1% increase in avg.AUCr (P<0.001) in the renal artery. Additionally, there was a significant 12.2% decrease in the avg.dTTP (P=0.001), a significant 24.5% increase in avg.Pr (P=0.004), and a significant 38.3% increase in avg.AUCr (P=0.009) in the renal cortex. Spearman correlation analysis showed that after endovascular repair there was a significant correlation between the avg.Pr of the renal artery and eGFR (r=0.30; P=0.0349), the avg.Pr of the renal cortex and eGFR (r=0.30; P=0.0300), and ^ ORCID: 0000-0003-2066-1183.

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Section: Resultsmentioning

confidence: 99%

Section: Image Post-processingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quantitative analysis of renal blood flow during thoracic endovascular aortic repair in type B aortic dissection using syngo iFlow

Fang

Zhao

Luo

et al. 2021

Quant Imaging Med Surg

View full text Add to dashboard Cite

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Chemosaturation Percutaneous Hepatic Perfusion (CS-PHP) with Melphalan: Evaluation of 2D-Perfusion Angiography (2D-PA) for Leakage Detection of the Venous Double-Balloon Catheter

Dewald

Meine

Winther

et al. 2019

Cardiovasc Intervent Radiol

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Evaluation of perfusion changes using a 2D Parametric Parenchymal Blood Flow technique with automated vessel suppression following partial spleen embolization in patients with hypersplenism and portal hypertension

Meine¹,

Maschke²,

Kirstein

et al. 2021

Medicine

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To evaluate the feasibility and potential value of 2D Parametric Parenchymal Blood Flow (2D-PPBF) for the assessment of perfusion changes following partial spleen embolization (PSE) in a retrospective observational study design. Overall, 12 PSE procedures in 12 patients were included in this study. The outcome of the study was the platelet response (PR), calculated as the percentage increase of platelet count (PLT), following PSE. To quantify perfusion changes using 2D-PPBF, the acquired digital subtraction angiography series were post-processed. A reference region-of-interest (ROI) was placed in the afferent splenic artery and a target ROI was positioned on the embolization territory of the spleen on digital subtraction angiography series pre- and post-embolization. The ratios of the target ROIs to the reference ROIs were calculated for the Wash-In-Rate (WIR), the Time-To-Peak (TTP) and the Area-Under-the-Curve (AUC). Comparisons between pre- and post-embolization data were made using Wilcoxon signed-rank test and Spearman's rank correlation coefficient (r). Afterwards, the study population was divided by the median of the TTP before PSE to analyze its value for the prediction of PR following PSE. Following PSE, PLT increased significantly from 43,000 ± 21,405 platelets/μL to 128,500 ± 66,083 platelets/μL with a PR of 255 ± 243% (P = .003). In the embolized splenic territory, the pre-/post-embolization 2D-PPBF parameter changed significantly: WIRpre-PSE 1.23 ± 2.42/WIRpost-PSE 0.09 ± 0.07; -64 ± 46% (p = 0.04), TTPpre-PSE 4.41 ± 0.99/TTPpost-PSE 5.67 ± 1.52 (P = .041); +34 ± 47% and AUCpost-PSE 0.81 ± 0.85/AUCpost-PSE 0.14 ± 0.08; -71 ± 18% (P = .002). A significant correlation of a 2D-PPBF parameter with the PLT was found for TTPpre-PSE/PLTpre-PSE r = -0.66 (P = .01). Subgroup analysis showed a significantly increased PR for the group with TTPpre-PSE >4.44 compared to the group with TTPpre-PSE ≤4.44 (404 ± 267% versus 107 ± 76%; P = .04). 2D-PPBF is an objective approach to analyze the perfusion reduction of embolized splenic tissue. TTP derived from 2D-PPBF has the potential to predict the extent of PR during PSE.

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Application of color-coded quantitative digital subtraction angiography in predicting the outcomes of immediate type I and type III endoleaks

Cited by 4 publications

References 25 publications

Quantitative analysis of renal blood flow during thoracic endovascular aortic repair in type B aortic dissection using syngo iFlow

Quantitative analysis of renal blood flow during thoracic endovascular aortic repair in type B aortic dissection using syngo iFlow

Chemosaturation Percutaneous Hepatic Perfusion (CS-PHP) with Melphalan: Evaluation of 2D-Perfusion Angiography (2D-PA) for Leakage Detection of the Venous Double-Balloon Catheter

Evaluation of perfusion changes using a 2D Parametric Parenchymal Blood Flow technique with automated vessel suppression following partial spleen embolization in patients with hypersplenism and portal hypertension

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