The impact of precise robotic lesion length measurement on stent length selection: Ramifications for stent savings

2015 ◽  
Vol 16 (6) ◽  
pp. 348-350 ◽  
Author(s):  
Paul T. Campbell ◽  
Kevin R. Kruse ◽  
Christopher R. Kroll ◽  
Janet Y. Patterson ◽  
Michele J. Esposito
Keyword(s):  
Length Measurement ◽  
Lesion Length ◽  
Stent Length ◽  
The Impact

scholarly journals CRT-161 The Impact of Precise Robotic Lesion Length Measurement on Stent Length Selection: Ramifications For Stent Savings

2015 ◽  
Vol 8 (2) ◽  
pp. S26
Author(s):  
Paul T. Campbell ◽  
Kevin R. Kruse ◽  
Christopher R. Kroll ◽  
Janet Y. Patterson ◽  
Michele J. Esposito
Keyword(s):  
Length Measurement ◽  
Lesion Length ◽  
Stent Length ◽  
The Impact

Preprocedural β-Blockers in the Functional Assessment of Intermediate Coronary Lesions by Instantaneous Wave-Free Ratio

Angiology ◽  
2021 ◽  
pp. 000331972199617
Author(s):  
Monica Verdoia ◽  
Rocco Gioscia ◽  
Matteo Nardin ◽  
Orazio Viola ◽  
Marta Francesca Brancati ◽  
...  
Keyword(s):  
Functional Assessment ◽  
Lesion Length ◽  
Functional Evaluation ◽  
Luminal Diameter ◽  
Coronary Syndrome ◽  
Coronary Stenoses ◽  
Minimal Luminal Diameter ◽  
Coronary Lesions ◽  
Β Blockers ◽  
The Impact

Aim: Instantaneous wave-free ratio (iFR) has emerged as the strategy of choice for the assessment of intermediate coronary lesions. The impact of preprocedural β-blockers therapy on the iFR was the aim of this study. Methods: We included patients undergoing functional assessment of intermediate (40%-70%) coronary lesions in 2 centers. The iFR measurement was performed by pressure-recording guidewire and calculated at the core laboratory using the manufacturers’ dedicated software. Minimal luminal diameter, reference diameter, percent diameter stenosis, and length of the lesion were measured. Positive iFR was considered for values <0.90. Results: We included 197 patients undergoing functional evaluation of 223 coronary lesions. Patients on β-blockers (69%) had more frequently hypertension ( P = .05); previous myocardial infarction ( P = .01); therapy with clopidogrel ( P = .02), statins, and aspirin; and acute coronary syndrome at presentation ( P < .001, respectively). Mean iFR values were slightly higher in patients on β-blockers (0.94 ± 0.06 vs 0.92 ± 0.06, P = .11). The rate of positive iFR was significantly lower with β-blockers (14.9% vs 27.5%, P = .04). On multivariate analysis, β-blockers use was a predictor of the significance of coronary stenoses (odds ratio [OR] = 0.48; 95% CI = 0.23-0.98; P = .05) together with lesion length (OR = 1.04; 95% CI = 1.01-1.07; P = .007). Conclusion: Among patients undergoing iFR, preprocedural β-blockers are associated with higher absolute values and a lower rate of positive iFR.

Impact of lipoprotein(a) levels on angiographic severity of femoropopliteal lesions

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
K Yanaka ◽  
H Akahori ◽  
T Imanaka ◽  
K Miki ◽  
N Yoshihara ◽  
...  
Keyword(s):  
De Novo ◽  
Independent Predictor ◽  
Lesion Length ◽  
Peripheral Artery ◽  
Lipoprotein A ◽  
Class D ◽  
Artery Disease ◽  
Peripheral Arterial ◽  
The Impact ◽  
Severe Calcification

Abstract Background High lipoprotein(a) [Lp(a)] levels are a risk factor for peripheral artery disease (PAD). However, the association between Lp(a) levels and angiographic severity of PAD has not been systematically studied. Purpose The aim of this study was to assess the impact of Lp(a) levels on angiographic severity of femoropopliteal lesions in patients with PAD. Methods We retrospectively analyzed a single-center database including 108 patients (74±8 years, 69% male) who underwent endovascular therapy for de novo femoropopliteal lesions and measured Lp(a) levels before therapy between June 2016 and September 2019. Patients were divided into low Lp(a) [LP(a) &lt;30 mg/dL; 77 patients] and high Lp(a) [LP(a) ≥30 mg/dL; 31 patients] groups. Trans-Atlantic Inter-Society Consensus (TASC) II classification, calcification [referring to peripheral arterial calcium scoring system (PACSS) classification] and lesion length were compared between the groups. Results Median Lp(a) was 16 (7–31) mg/dL.The prevalence of TASC II class D (13% vs 38%, P&lt;0.01) and severe calcification (PACSS 4) (6% vs 23%, P=0.02) was significantly higher and lesion length was longer (123±88 mm vs 175±102 mm, P&lt;0.01) in the high Lp(a) group than in the low Lp(a) group.(Table and Figure) In multivariate analysis, Lp(a)≥30 was an independent predictor for TASC II class D (HR=3.67, P=0.02) and PACSS 4 (HR=4.97, P=0.02) prevalence. Conclusion Lp(a) was associated with angiographic severity of femoropopliteal lesions in patients with PAD. Comparison of angiographic severity Funding Acknowledgement Type of funding source: None

scholarly journals The Impact of Lesion Length on Angiographic Restenosis after Vertebral Artery Origin Stenting

2006 ◽  
Vol 32 (4) ◽  
pp. 379-385 ◽  
Author(s):  
Y.H. Lin ◽  
Y.C. Liu ◽  
W.Y.I. Tseng ◽  
J.M. Juang ◽  
C.S. Hung ◽  
...  
Keyword(s):  
Vertebral Artery ◽  
Lesion Length ◽  
Angiographic Restenosis ◽  
The Impact

scholarly journals An Analysis of the Optical System of a Length Measurement Comparator

Mechanika ◽  
2020 ◽  
Vol 26 (6) ◽  
pp. 518-525
Author(s):  
Rimantas LAZDINAS ◽  
Mindaugas JUREVICIUS ◽  
Vladas VEKTERIS ◽  
Vytautas TURLA ◽  
Eugenijus JURKONIS
Keyword(s):  
Optical System ◽  
Processing Speed ◽  
Length Measurement ◽  
Identification Algorithm ◽  
High Processing Speed ◽  
Image Blurring ◽  
Scale Calibration ◽  
Calibration Accuracy ◽  
The Impact ◽  
High Processing

In the paper, the optical system of a precise bar length measuring comparator is analysed. The requirements for such a system are determined and systematized. The impact of the resolution, signal discretization frequency, image blurring, bar edge measurement indeterminacy and camera noise on measuring the bar width and establishing the bar position is discussed upon. Various algorithms have been analysed and finally a bar edge identification algorithm oriented to the scale calibration accuracy and the high processing speed was proposed. In the end of the paper, conclusions are provided.

scholarly journals Assessing the effect of phenotyping scoring systems and SNP calling and filtering methods on detection of QTL associated with reaction of Brassica napus to Sclerotinia sclerotiorum

2021 ◽  
Author(s):  
Fereshteh Shahoveisi ◽  
Atena Oladzad ◽  
Luis E. del Rio Mendoza ◽  
Seyedali Hosseinirad ◽  
Susan Ruud ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Missing Data ◽  
Sclerotinia Sclerotiorum ◽  
Scoring Systems ◽  
Mortality Data ◽  
Lesion Length ◽  
Data Sets ◽  
Qtl Detection ◽  
Snp Calling ◽  
The Impact

The polyploid nature of canola (Brassica napus) represents a challenge for the accurate identification of single nucleotide polymorphisms (SNPs) and the detection of quantitative trait loci (QTL). In this study, combinations of eight phenotyping scoring systems and six SNP calling and filtering parameters were evaluated for their efficiency in detection of QTL associated with response to Sclerotinia stem rot, caused by Sclerotinia sclerotiorum, in two doubled haploid (DH) canola mapping populations. Most QTL were detected in lesion length, relative areas under the disease progress curve (rAUDPC) for lesion length, and binomial-plant mortality data sets. Binomial data derived from lesion size were less efficient in QTL detection. Inclusion of additional phenotypic sets to the analysis increased the numbers of significant QTL by 2.3-fold; however, the continuous data sets were more efficient. Between two filtering parameters used to analyze genotyping by sequencing (GBS) data, imputation of missing data increased QTL detection in one population with a high level of missing data but not in the other. Inclusion of segregation-distorted SNPs increased QTL detection but did not impact their R2 values significantly. Twelve of the 16 detected QTL were on chromosomes A02 and C01, and the rest were on A07, A09, and C03. Marker A02-7594120, associated with a QTL on chromosome A02 was detected in both populations. Results of this study suggest the impact of genotypic variant calling and filtering parameters may be population dependent while deriving additional phenotyping scoring systems such as rAUDPC datasets and mortality binary may improve QTL detection efficiency.

The impact of different viewing conditions on radiological file and working length measurement

2010 ◽  
Vol 43 (7) ◽  
pp. 600-607 ◽  
Author(s):  
I. Orafi ◽  
H. V. Worthington ◽  
A. J. E. Qualtrough ◽  
V. E. Rushton
Keyword(s):  
Length Measurement ◽  
Working Length ◽  
The Impact

scholarly journals Variation in Susceptibility of Tanoak to the NA1 and EU1 Lineages of Phytophthora ramorum, the Cause of Sudden Oak Death

Plant Disease ◽  
2019 ◽  
Vol 103 (12) ◽  
pp. 3154-3160 ◽  
Author(s):  
Kelsey L. Søndreli ◽  
Alan Kanaskie ◽  
Susanna Keriö ◽  
Jared M. LeBoldus
Keyword(s):  
Disease Resistance ◽  
Forest Ecosystems ◽  
Phytophthora Ramorum ◽  
Sudden Oak Death ◽  
Artificial Inoculation ◽  
Lesion Length ◽  
Significant Difference ◽  
Notholithocarpus Densiflorus ◽  
The Impact ◽  
Inoculation Assay

Phytophthora ramorum, the cause of sudden oak death (SOD), kills tanoak (Notholithocarpus densiflorus) trees in southwestern Oregon and California. Two lineages of P. ramorum are now found in wildland forests of Oregon (NA1 and EU1). In addition to the management of SOD in forest ecosystems, disease resistance could be used as a way to mitigate the impact of P. ramorum. The objectives of this study were to (i) characterize the variability in resistance of N. densiflorus among families using lesion length; (ii) determine whether lineage, isolate, family, or their interactions significantly affect variation in lesion length; and (iii) determine whether there are differences among isolates and among families in terms of lesion length. The parameters isolate nested within lineage (isolate[lineage]) and family × isolate(lineage) interaction explained the majority of the variation in lesion length. There was no significant difference between the NA1 and EU1 lineages in terms of mean lesion length; however, there were differences among the six isolates. Lesions on seedlings collected from surviving trees at infested sites were smaller, on average, than lesions of seedlings collected from trees at noninfested sites (P = 0.0064). The results indicate that there is potential to establish a breeding program for tanoak resistance to SOD and that several isolates of P. ramorum should be used in an artificial inoculation assay.

Impact of coronary calcium score and lesion characteristics on the diagnostic performance of machine-learning-based computed tomography-derived fractional flow reserve

2021 ◽  
Author(s):  
Hyun Jung Koo ◽  
Joon-Won Kang ◽  
Soo-Jin Kang ◽  
Jihoon Kweon ◽  
June-Goo Lee ◽  
...  
Keyword(s):  
Machine Learning ◽  
Computed Tomography ◽  
Coronary Artery ◽  
Coronary Angiography ◽  
Fractional Flow Reserve ◽  
Diagnostic Performance ◽  
Lesion Length ◽  
Fractional Flow ◽  
Flow Reserve ◽  
The Impact

Abstract Aims To evaluate the impact of coronary artery calcium (CAC) score, minimal lumen area (MLA), and length of coronary artery stenosis on the diagnostic performance of the machine-learning-based computed tomography-derived fractional flow reserve (ML-FFR). Methods and results In 471 patients with coronary artery disease, computed tomography angiography (CTA) and invasive coronary angiography were performed with fractional flow reserve (FFR) in 557 lesions at a single centre. Diagnostic performances of ML-FFR, computational fluid dynamics-based CT-FFR (CFD-FFR), MLA, quantitative coronary angiography (QCA), and visual stenosis grading were evaluated using invasive FFR as a reference standard. Diagnostic performances were analysed according to lesion characteristics including the MLA, length of stenosis, CAC score, and stenosis degree. ML-FFR was obtained by automated feature selection and model building from quantitative CTA. A total of 272 lesions showed significant ischaemia, defined by invasive FFR ≤0.80. There was a significant correlation between CFD-FFR and ML-FFR (r = 0.99, P &lt; 0.001). ML-FFR showed moderate sensitivity and specificity in the per-patient analysis. Diagnostic performances of CFD-FFR and ML-FFR did not decline in patients with high CAC scores (CAC &gt; 400). Sensitivities of CFD-FFR and ML-FFR showed a downward trend along with the increase in lesion length and decrease in MLA. The area under the curve (AUC) of ML-FFR (0.73) was higher than those of QCA and visual grading (AUC = 0.65 for both, P &lt; 0.001) and comparable to those of MLA (AUC = 0.71, P = 0.21) and CFD-FFR (AUC = 0.73, P = 0.86). Conclusion ML-FFR showed comparable results to MLA and CFD-FFR for the prediction of lesion-specific ischaemia. Specificities and accuracies of CFD-FFR and ML-FFR decreased with smaller MLA and long lesion length.

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