scholarly journals Dynamic Doppler Ultrasound Assessment of Tissue Perfusion Is a Better Tool than a Single Vessel Doppler Examination in Differentiating Malignant and Inflammatory Pancreatic Lesions

Diagnostics ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2289
Author(s):  
Przemysław Dyrla ◽  
Arkadiusz Lubas ◽  
Jerzy Gil ◽  
Marek Saracyn ◽  
Maciej Gonciarz
Keyword(s):  
Flow Velocity ◽  
Color Doppler ◽  
Resistive Index ◽  
Tissue Perfusion ◽  
Inflammatory Lesions ◽  
Perfusion Measurement ◽  
Single Vessel ◽  
Ultrasound Assessment ◽  
Malignant Lesions ◽  
Vessel Flow

Dynamic tissue perfusion measurement (DTPM) and single vessel flow measurement (SVFM) were assessed in differentiating inflammatory and malignant lesions of the pancreas. Sixty-nine patients (age 62.0 ± 14.7; 33 Female and 36 Men; 40 with malignant and 29 with inflammatory lesions) in whom during the endoscopic ultrasound (EUS) of focal pancreatic lesions it was possible to adequately evaluate the flow in the color Doppler, and then perform a biopsy, were qualified for the study. The assessed DTPM parameters flow velocity (TFV), perfusion intensity (TPI), and resistive index (TRI) as well as the following SVFM parameters: flow velocity (FV), volume flow (VolF), and resistive index (RI) differed significantly between the malignant and inflammatory lesions (p < 0.005). TFV and TPI have slightly better discriminatory properties than the corresponding FV and VolF parameters (p < 0.10). Considering the Doppler parameters usually evaluated in a given method, the TPI = 0.009 cm/s (sensitivity 79%, specificity 92%, AUC 0.899, p < 0.001) was significantly better (p = 0.014) in differentiating between inflammatory and malignant pancreatic lesions in comparison to FV = 2.526 cm/s (sensitivity 79%, specificity 70%, AUC 0.731, p < 0.001). Tissue perfusion has better discriminatory properties in the differentiation of solid pancreatic lesions than the Doppler blood flow examination in the single vessel within the tumor.

scholarly journals Color Doppler dynamic tissue perfusion measurement: a novel tool in the assessment of renal parenchymal perfusion in children with vesicoureteral reflux

2016 ◽  
Vol 3 ◽  
pp. 621-628 ◽  
Author(s):  
Magdalena M. Woźniak ◽  
Thomas M. Scholbach ◽  
Jakob Scholbach ◽  
Agata Pawelec ◽  
Paweł Nachulewicz ◽  
...  
Keyword(s):  
Vesicoureteral Reflux ◽  
Color Doppler ◽  
Tissue Perfusion ◽  
Perfusion Measurement

scholarly journals Intestinal Dynamic Color Doppler Sonographic Tissue Perfusion Measurement

Colonoscopy ◽  
10.5772/20720 ◽  
2011 ◽  
Author(s):  
Thomas Scholbach ◽  
Jorg Hofmann ◽  
Jakob Scholbach
Keyword(s):  
Color Doppler ◽  
Tissue Perfusion ◽  
Perfusion Measurement

Color doppler ultrasonography of soft-tissue masses

1998 ◽  
Vol 39 (4) ◽  
pp. 421-426 ◽  
Author(s):  
R. Lagalla ◽  
A. Iovane ◽  
G. Caruso ◽  
M. Lo Bello ◽  
L. E. Derchi
Keyword(s):  
Soft Tissue ◽  
Doppler Ultrasonography ◽  
Color Doppler ◽  
Soft Tissue Tumors ◽  
Color Doppler Ultrasonography ◽  
Tissue Mass ◽  
Vascular Impedance ◽  
The Us ◽  
Soft Tissue Masses ◽  
Malignant Lesions

Purpose: To evaluate the capability of color Doppler ultrasonography to differentiate between benign and malignant soft-tissue tumors. Material and Methods: We reviewed the ultrasonographic (US) and color Doppler (CD) findings in 46 consecutive patients with a palpable periskeletal mass. The presence of 3 or more vascular hila and of tortuous and irregular internal vessels within the lesions was considered an indication of malignancy. The CD diagnosis was compared with that obtained at US alone. Results: The sensitivity and specificity of CD were respectively 85% and 92%; these values were higher than those obtained at US alone, respectively 75% and 50%. Arteriovenous malformations presented as lesions with large internal vessels that had low vascular impedance and were easily diagnosed. The waveform patterns within solid tumors were not specific. Conclusion: At present, US is commonly employed to confirm the presence of a suspected soft-tissue mass, to locate it accurately, and to indicate its nature. CD findings enhance the role of the US technique in such lesions. The combined use of US and CD can allow the differentiation of benign from malignant lesions, and thus provide a better basis for treatment.

scholarly journals AGE-RELATED CHANGES IN RENAL RESISTIVE INDEX AFTER ESWL

2014 ◽  
Vol 21 (1) ◽  
Author(s):  
Anton Hermawan ◽  
Sabilal Alif ◽  
Wahjoe Djatisoesanto ◽  
Tri Wulanhandarini ◽  
Budiono Budiono
Keyword(s):  
Shock Wave ◽  
Extracorporeal Shock Wave Lithotripsy ◽  
Shock Wave Lithotripsy ◽  
Color Doppler ◽  
Resistive Index ◽  
Renal Resistive Index ◽  
Kidney Calculi ◽  
Pelvic Kidney ◽  
Extracorporeal Shock Wave ◽  
Age Related

Objective: To determine relation between age and resistive index (RI) changes occurring after extracorporeal shock wave lithotripsy (ESWL). Material & Method: We performed a prospective study in Soetomo Hospital Surabaya. Using duplex ultrasonography, RI was determined in 20 patients with calyceal kidney calculi and pelvic kidney calculi. RI of the interlobar renal arteries were measured in the region near the calculi (distance, less than 2 cm), one hour before ESWL and RI was measured again at 1 hour, 3 days and 7 days after ESWL. Changes in RI values and relation with age (≤ 60 years old and > 60 years old) were evaluated. Results: The renal RI increased significantly 1 hour and 3 days after ESWL, but returned to before ESWL values 7 days after ESWL in the both groups. Although there was positive correlation between age and RI before ESWL, but there was no correlation between age and RI changes after ESWL. Conclusion: Renal RI is higher with age > 60 years, after ESWL renal RI showed transient increase which returned to baseline after 7 days.Key words: Color Doppler Ultrasonography, extracorporeal shock wave lithotripsy, renal resistive index, calyceal kidney calculi, pelvic kidney calculi.

Dynamic Sonographic Tissue Perfusion Measurement with the PixelFlux Method

2008 ◽  
pp. 115-125 ◽  
Author(s):  
Thomas Scholbach ◽  
Jakob Scholbach ◽  
Ercole Di Martino
Keyword(s):  
Tissue Perfusion ◽  
Perfusion Measurement

P2599Echo color doppler evaluation of renal hemodynamic during acute heart failure

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
A Sacchi ◽  
M Galassi ◽  
F Brugioni ◽  
B Ricco' ◽  
F Lami ◽  
...  
Keyword(s):  
Heart Failure ◽  
Acute Heart Failure ◽  
Color Doppler ◽  
Diuretic Therapy ◽  
Systolic Pressure ◽  
Resistive Index ◽  
Kidney Injury ◽  
Pulmonary Artery Systolic Pressure ◽  
Venous Flow ◽  
Renal Hemodynamic

Abstract Background Acute heart failure (AHF) is often accompanied by impairment in renal function. A profound derangement of normal abdominal haemodynamic is always present during this clinical phase. Methods 14 patients (6 F – mean age 80 – mean EF 0.39) admitted for acute heart failure underwent cardiac and renal Echo Doppler examination at day 1-3-5 of Hospital stay. Parameters of arterial and venous flow within cortical right kidney were recorded. Venous Doppler Profile (VDP) was classified as: continuous (C), pulsatile (P), biphasic (B) or monophasic (M) according to the growing degree of derangement. Arterial resistive index (RI) >0.8 was considered elevated. Correlation between renal hemodynamic (and its changes) with biohumoral and echo parameters was sought. Outcome At day 1 VDP was M or B in 8 patients (57%) and in four (50%) of them dropped to C or P at day 5. RI was elevated in 8 patients at day 1 while only in 4 at day 5. VDP and RI were not related to EF or BNP values. One patient died before day 5, no other worsening heart failure episodes occurred. Two patients (14%) developed acute kidney injury but their VDP and RI were normal and did not change. Three patients (21%) did not improve their BNP (decrease >30%) but this was not associated with VDP or RI changes. Elevated derived pulmonary artery systolic pressure (>40 mmHg) was present in 6 out of 8 patients (75%) with M or B VDP and in all 4 patients with both elevated RI and M or B VDP. Venous Pattern Day 1 Day 3 Day 5 Continous 2 8 5 Pulsatile 4 2 4 Biphasic 2 1 2 Monophasic 6 3 2 Arterial RI >0.8 8 6 4 BNP, pg/ml 1060±1180* 372±281* 424±213* Creatinine, mg/dl 1.4±0.6 1.5±0.6 1.3±0.6 Hb, g/dl 12.1±2.3 12.3±3.6 13.2±2.3 *p>0.05. Conclusions This is the first study exploring changes in renal hemodynamic by echo Doppler during AHF. With respect to previous studies among stable patients, our preliminary data shows a higher proportion of deranged renal venous and/or arterial pattern. After diuretic therapy a trend towards improvement in VDP was recorded. No clear association with other clinical and hemodynamic parameters seems evident.

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