Quantitative Software Analysis of Ultrasonographic Textures in Experimental Testicular Torsion

Aslan, Mustafa; Küçükaslan, İbrahim; Mülazimoğlu, S. Barış; Soyer, Tutku; Şenyücel, Mine; Çakmak, Murat; Scholbach, Jakob; Aslan, Selim

doi:10.1055/s-0032-1324800

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…Regarding the patients (n=10) with advanced but compensated liver cirrhosis, all measurements (n=30 PFA and n=30 PW-Doppler) were also applicable (median angle alpha of 14 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 degrees). The PFA and PW-Doppler showed good correlation (r=0.61, 95% CI −0.03–0.89).…”

Section: Resultsmentioning

confidence: 99%

“…1a/b demonstrates the principle of this pixel flow analysis (PFA) tool compared to the established PW-Doppler. PFA has already been evaluated for placenta vascularization, umbilical cord flow during pregnancy, and in an experimental setting to detect ischemic lesions in testicular torsion in rats, with promising results 20 21 22 23 . Furthermore, a phantom study showed a good correlation of the actual flow recorded with PFA using a plastic tube with a predefined flow volume 22 .…”

Section: Introductionmentioning

confidence: 99%

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Quantification of Portal Vein Vascularization Using an Automated Post-Processing Video Analysis Tool

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Heni

Karlas

2023

Ultrasound Int Open

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Purpose Blood flow dynamics represent a diagnostic criterion for many diseases. However, no established reference standard is available. In clinical practice, ultrasound pulsed-wave Doppler (PW-Doppler) is frequently used to assess visceral blood flow, despite its well-known limitations. A quantitative analysis of conventional color Doppler patterns can be performed using an innovative ultrasound-based algorithm (pixel flow analysis, PFA). This tool already shows promising results in obstetrics, but the technique has not yet been evaluated for portal venous blood flow assessment. Methods This prospective exploratory research study evaluated the applicability of PFA in the portal venous system. Measurements of portal venous flow using PFA and PW-Doppler were compared in healthy volunteers (n=20) and in patients with hepatic steatosis (n=10) and liver cirrhosis (n=10). Results In healthy volunteers (60% female, mean age 23 years, BMI 21.5 kg/m2 [20.4–23.8]), PFA and PW-Doppler showed a strong positive correlation in fasting conditions (r=0.69; 95% CI 0.36–0.87), recording a median blood flow of 834 ml/min (624–1066) and 718 ml/min (620–811), respectively. PFA was also applicable in patients with chronic liver diseases (55% female, age 65 years (55–72); BMI 27.8 kg/m2 (25.4–30.8)), but the correlation between PFA and PW-Doppler was poor (r=− 0.09) in the subgroup with steatosis. A better correlation (r=0.61) was observed in patients with liver cirrhosis. Conclusion PFA and PW-Doppler assessment of portal venous vascularization showed high agreement in healthy volunteers and patients with liver cirrhosis. Therefore, PFA represents a possible alternative to conventional PW-Doppler sonography for visceral blood flow diagnostics and merits further evaluation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantification of Portal Vein Vascularization Using an Automated Post-Processing Video Analysis Tool

Blank

Heni

Karlas

2023

Ultrasound Int Open

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“…For this purpose, the testes need to be slightly suspended because, even resting, the organ on the operating 12 and is recognized as the most accurate method for measuring testicular volume in situ 1,6 . It is a noninvasive method that allows for the diagnosis of a wide range of testicular diseases 10,[17][18][19] .…”

Section: Discussionmentioning

confidence: 99%

Measurement of testicular volume in Wistar rats using a caliper and ultrasonography in experimental surgery

et al. 2016

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PURPOSE:To compare the measurement of the testicular volume of Wistar rats using a caliper and ultrasonography. METHODS:Forty Wistar rats were randomly assigned into four groups. A tensile force of 1.6 Newton (N) and 1.0 N was applied to the right spermatic cord in group I and group II, respectively. Group III was the sham group, and group IV served as a control. The initial and final testicular volumes were measured using a caliper and ultrasonography and compared. A significance level of 5% was used. RESULTS:The Kappa coefficient was equal to 0.292 (p = 0.006). The Pearson correlation coefficient obtained for the percent reduction in the right testicular volume using ultrasonography and a caliper was equal to 0.696 (p < 0.001). CONCLUSION:There was reasonable agreement and a significant positive correlation between the percent reduction in the right testicular volume using ultrasonography and a caliper.

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“…horns, the uterine horns were removed and the right and left ovaries were seen. All measurements were taken by the same person (SBM) using a portable LOGIQ Book XP ultrasound (General Electric Healthcare, Solingen, Germany), with a 6-10 MHz linear probe in a manner that had a minimal mechanical effect on the ovaries [16]. At least 3 Power Doppler US (angio mod) images were taken for each ovary.…”

Section: Rosiglitazone Treatmentmentioning

confidence: 99%

“…Afterward, the Pixelflux program (Version 1.0, Chameleon-Software, Leipzig, Germany) was utilized to obtain dynamic tissue perfusion measurements on the Power Doppler images. The temporal variation in intensity (I) red, Vred, average intensity, and whole intensity values were statistically evaluated [16].…”

Section: Rosiglitazone Treatmentmentioning

confidence: 99%

What is the impact of PPAR-γ agonist-rosiglitazone on ovarian reserve after hysterectomy? An experimental study

Gündoğdu¹,

Tapisiz²,

Dilbaz³

et al. 2020

Turk J Med Sci

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Background/aim: To evaluate the effects of hysterectomy on rat ovaries and the possible protective role of peroxisome proliferatoractivated receptor gamma (PPAR-γ) agonist-rosiglitazone against ovarian reserve decrement. Materials and methods: Forty-five adult Wistar albino rats were randomly divided into three groups. Hysterectomy was performed (n = 15) in group 1 [H]; 1 mg/kg/day PPAR-γ agonist/rosiglitazone was used for 50 days after hysterectomy (n = 15) in group 2 [H + R]; a sham operation was performed (n = 15) in group 3 [control, C]. Blood samples were collected for anti-Müllerian hormone (AMH) evaluation in all groups and simultaneous ovarian Doppler examination was performed in [H] and [H + R] groups before and after (50 days) hysterectomy. All animals were sacrificed to obtain ovaries for histological examination. Results: AMH levels were found to be significantly decreased at postoperative day 50 in all groups (P < 0.05). Histopathologic analysis showed that primary, preantral, and antral follicle counts were significantly higher in the [H] group as compared to the [C] and [H + R] groups (P < 0.05). There was no significant difference between the [C] and [H + R] groups in terms of follicle numbers (P > 0.05). In the ovarian Doppler blood flow analysis, all parameters were significantly decreased in group [H] (P < 0.05), but not in the [H + R] group (P > 0.05) on postoperative day 50. Conclusion: Hysterectomy affects the histopathological structure of rat ovaries and PPAR-γ agonist-rosiglitazone improves the ovarian Doppler blood flow parameters.

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Quantitative Software Analysis of Ultrasonographic Textures in Experimental Testicular Torsion

Abstract: In experimental testicular torsion, ischemic changes can be detected by PDUS power/angio mode using blood flow alterations as early as the second hour. Tissue damage cannot be evaluated within the first 2 hours of torsion with B-mode ETX analysis.

Cited by 8 publications

References 17 publications

Quantification of Portal Vein Vascularization Using an Automated Post-Processing Video Analysis Tool

Quantification of Portal Vein Vascularization Using an Automated Post-Processing Video Analysis Tool

Measurement of testicular volume in Wistar rats using a caliper and ultrasonography in experimental surgery

What is the impact of PPAR-γ agonist-rosiglitazone on ovarian reserve after hysterectomy? An experimental study

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