Value of high resolution compression elastography and color doppler sonography in characterisation of breast lesions: Comparison of different high-frequency transducers

2014 ◽  
Vol 57 (2) ◽  
pp. 129-135 ◽  
Author(s):  
D. Rjosk-Dendorfer ◽  
V.M. Gürtler ◽  
W.H. Sommer ◽  
M. Reiser ◽  
D.A. Clevert
Keyword(s):  
High Resolution ◽  
High Frequency ◽  
Doppler Sonography ◽  
Color Doppler ◽  
Color Doppler Sonography ◽  
Breast Lesions

Prognostic Value of Angiogenesis Evaluated with High-Frequency and Color Doppler Sonography for Preoperative Assessment of Melanomas

2002 ◽  
Vol 178 (6) ◽  
pp. 1547-1551 ◽  
Author(s):  
Nathalie Lassau ◽  
Serge Koscielny ◽  
Marie-Françoise Avril ◽  
Alvaro Margulis ◽  
Pierre Duvillard ◽  
...  
Keyword(s):  
High Frequency ◽  
Prognostic Value ◽  
Doppler Sonography ◽  
Color Doppler ◽  
Preoperative Assessment ◽  
Color Doppler Sonography

High-Frequency Color Doppler Sonography of Bullous Pemphigoid

2016 ◽  
Vol 35 (8) ◽  
pp. 1821-1825 ◽  
Author(s):  
María Librada Porriño-Bustamante ◽  
Fernando Alfageme ◽  
Lola Suárez ◽  
María Antonia González de Domingo ◽  
Mercedes Hospital ◽  
...  
Keyword(s):  
Bullous Pemphigoid ◽  
High Frequency ◽  
Doppler Sonography ◽  
Color Doppler ◽  
Color Doppler Sonography

Color Doppler sonography: characterizing breast lesions

2010 ◽  
Vol 2 (2) ◽  
pp. 151-163
Author(s):  
Atif Hashmi ◽  
Susan Ackerman ◽  
Abid Irshad
Keyword(s):  
Doppler Sonography ◽  
Color Doppler ◽  
Color Doppler Sonography ◽  
Breast Lesions

Differential Diagnosis of Acute Scrotum in Childhood and Adolescence with High-Resolution Duplex Sonography

2021 ◽  
Vol 42 (01) ◽  
pp. 10-38
Author(s):  
Karl-Heinz Deeg
Keyword(s):  
Differential Diagnosis ◽  
High Resolution ◽  
Spermatic Cord ◽  
Testicular Torsion ◽  
Doppler Sonography ◽  
Color Doppler ◽  
Resistance Index ◽  
Color Doppler Sonography ◽  
Spectral Doppler ◽  
Appendix Testis

AbstractAcute testicular pain in childhood can be caused by testicular torsion, torsion of the appendix testis, or epididymo-orchitis. Quick and reliable diagnosis is essential for determining the further course of action (surgery or conservative approach). The diagnostic tool of choice is high-resolution sonography with a linear transducer (> 10 MHz) combined with color and spectral Doppler sonography. The Doppler device settings should include a low pulse repetition frequency (< 4 cm/s), a low wall filter (< 100 Hz), and adequate gain. Comparison with the unaffected healthy testis is essential. The most important of the three diseases is torsion of the spermatic cord because it requires immediate surgical intervention and detorsion. The affected testis is enlarged and has an inhomogeneous echotexture with hypoechoic and hyperechoic areas as well as an associated hydrocele. In testicular torsion, color Doppler shows reduced or absent intratesticular vessels in comparison with the healthy contralateral testis. Spectral Doppler shows decreased flow velocities especially during diastole in intratesticular arteries and an increased resistance index. The investigation should always include imaging of the spermatic cord from the outer inguinal ring to the upper pole of the testis. In contrast to a normal finding, the vessels and the ductus deferens are not displayed as linear tubular structures but in form of a spiral twist. Ultrasound shows a target-like structure with multiple concentric rings. Color Doppler sonography shows the typical whirlpool sign. In torsion of the appendix testis, the appendix testis is enlarged in the groove between the testis and epididymis. The longitudinal diameter of the appendix testis can be greater than 5 mm. The echogenicity of the torsed appendage can vary between hypoechoic (acute torsion) and hyperechoic (prior torsion). An associated hydrocele of varying size is usually seen. Color Doppler sonography reveals a lack of perfusion of the enlarged appendix testis and increased vascularity of the testis and primarily the epididymis. Epididymo-orchitis is characterized by an enlarged epididymis and/or testis with inhomogeneous echogenicity (hypoechoic – hyperechoic). Color Doppler sonography shows increased vascularity in comparison with the unaffected testis. Spectral Doppler reveals increased diastolic flow velocities and a decreased resistance index. Idiopathic scrotal edema and an incarcerated inguinal hernia must be ruled out in the differential diagnosis.

High-Resolution and Color Doppler Sonography in the Evaluation of Skin Metastases

2003 ◽  
Vol 22 (10) ◽  
pp. 1017-1022 ◽  
Author(s):  
Francesco Giovagnorio ◽  
Cristina Valentini ◽  
Amalia Paonessa
Keyword(s):  
High Resolution ◽  
Doppler Sonography ◽  
Color Doppler ◽  
Color Doppler Sonography ◽  
Skin Metastases

Noninvasive Assessment of Renal Artery Stenosis

1995 ◽  
Vol 36 (3) ◽  
pp. 243-247 ◽  
Author(s):  
M. Strotzer ◽  
C. M. Fellner ◽  
A. Geissler ◽  
J. Gmeinwieser ◽  
S. M. Kohler ◽  
...  
Keyword(s):  
High Resolution ◽  
Arterial Hypertension ◽  
Renal Artery ◽  
Mr Angiography ◽  
Doppler Sonography ◽  
Color Doppler ◽  
Color Doppler Sonography ◽  
Screening Methods ◽  
Tof Mra ◽  
Noninvasive Assessment

The purpose of this study was to evaluate MR angiography (MRA) and color Doppler sonography as noninvasive screening methods in suspected renovascular hypertension. Fifty-five consecutive patients with arterial hypertension were examined prospectively using high resolution 3-D TOF MRA and color Doppler sonography. Intraarterial angiography was the standard of reference. Stenoses of 60% or more were regarded as significant. MR angiograms were evaluated by 3 independent observers who studied 110 main renal arteries. All 8 significant stenoses and 2 occlusions were correctly classified with MRA while one 60% stenosis was underestimated by color Doppler sonography. Mild stenoses were overestimated by MRA in 4 and by color Doppler sonography in 6 cases. A drawback of both methods was the large number of not evaluable arteries (6 in MRA, 11 in color Doppler sonography). These arteries were regarded as pathologic because stenosis could not be excluded. Due to this fact specificities of MRA and color Doppler sonography were 90% and 85% respectively. Accessory vessels were detected in 47% (8/17) by MRA and in 0% (0/17) by color Doppler sonography.

Solid Breast Lesions: Evaluation with Power versus Conventional Color Doppler Sonography

1998 ◽  
Vol 39 (5) ◽  
pp. 1015
Author(s):  
Seung Bum Chin ◽  
Shin Ho Kook ◽  
Young Rae Lee ◽  
Hae Won Park ◽  
Yoon Ok Park ◽  
...  
Keyword(s):  
Doppler Sonography ◽  
Color Doppler ◽  
Color Doppler Sonography ◽  
Breast Lesions
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