Identification of Ulnar Artery Perforators Using Color Doppler Ultrasonography

2020 ◽  
Vol 36 (09) ◽  
pp. 667-672
Author(s):  
Megumi Ishiko ◽  
Koichi Yano ◽  
Ema Onode ◽  
Kiyohito Takamatsu
Keyword(s):  
Healthy Volunteers ◽  
High Frequency ◽  
Doppler Ultrasonography ◽  
Color Doppler ◽  
Ulnar Artery ◽  
Color Doppler Ultrasonography ◽  
Doppler Us ◽  
Frequency Transducer ◽  
High Frequency Transducer ◽  
Color Doppler Us

Abstract Background The ulnar artery perforator (UAP) flap, which is hairless, thin, and pliable, has been used for the reconstruction of soft tissues from the finger to the elbow. Preoperative planning is essential for a perforator flap surgery, and there are some tests to identify perforators. Color Doppler ultrasonography (US) with a high-frequency transducer helps in detecting decreased flow in smaller vessels, such as perforators. The purpose of this study was to determine the anatomical locations and origins of perforators arising from the ulnar artery using color Doppler US in healthy volunteers. Methods Forty forearms of 20 healthy volunteers were included in the study. Perforators arising from the ulnar artery, within 100 mm proximal to the pisiform, were investigated using color Doppler US with a high-frequency transducer. Results A total of 205 perforators were identified. On comparing the locations in each 20 mm section from the pisiform, the largest number of perforators was 58 (28%), within 20 mm proximal to the pisiform. The axial view demonstrated 44 (21%), 64 (31%), 32 (16%), and 65 (32%) perforators in the radial, ulnar, superficial, and deep aspects of the ulnar artery, respectively. Fifty-two and 28 essential perforators were supplied by the UAPs arising from the superficial and ulnar aspect within 20 mm proximal to the pisiform and between 21 and 40 mm proximal to the pisiform, respectively, while elevating the UAP flap. Conclusion This is the first study to assess the UAP using color Doppler US. Identification of UAP using color Doppler US can be used as a preoperative assessment for reliable elevation of a UAP flap.

EVALUATION OF EPIDIDYMORCHITIS BY HIGH FREQUENCY GRAY SCALE AND COLOR DOPPLER ULTRASONOGRAPHY

2021 ◽  
pp. 54-56
Author(s):  
Akhil Sharma ◽  
Sameer R. Verma ◽  
Neeraj Prajapati ◽  
Vinod Kumar Mogha
Keyword(s):  
High Frequency ◽  
Doppler Ultrasonography ◽  
Low Cost ◽  
Color Doppler ◽  
Color Doppler Ultrasonography ◽  
The Body ◽  
Mri Imaging ◽  
Gray Scale ◽  
Doppler Study

INTRODUCTION: Ultrasonography is extremely well suited to study of scrotum and its contents. Ultrasound is simple to perform, quick, non-invasive, low cost effective, easily reproducible, widely available and does not involve irradiation of gonads.It is very helpful in differentiating intratesticular and extratesticular pathologies. Ultrasound is the modality to differentiate solid from cystic lesions of testes and with the introduction of color Doppler, it becomes easiear to assess the viability of testis in cases of torsion and guiding the treatment accordingly. USG is helpful in differentiating torsion/ischaemia of testis from the acute inammatory pathologies. Role of other Modalities: CT and MRI have dominated imaging of other regions of the body, they have certain restrictions in evaluation of scrotal diseases. Computed Tomography delivers radiation to gonads, On the contrary, MRI imaging is expensive and not readily obtainable. Radionuclide scan helps in equivocal presentations to assess vascularity within the testis in setting of torsion but its readily availability and cost is the main set back. AIM: To assess the role of high frequency gray scale and color doppler ultrasonography in evaluation of epididymorchitis. MATERIAL & METHODS: SAMPLE: 50 cases of scrotal pathology were taken using High-frequency real time gray scale ultrasonography and Color Doppler . Patients were referred to our department for scrotal ultrasonography and Doppler study by department of Urology and department of Surgery of SRMS IMS Bareilly. RESULTS: In the present study total evaluated cases of epididymoorchitis were 15,among them 11 cases were acute and 4 cases were of chronic epididymoorchitis.. Majority of cases were having unilateral involvement with 1 case of B/L involvement. USG gray scale found heterogenous echogenicity or reduced echogenicity in acute EPO while the echogenicity was reduced with calcication in chronic EPO. .Doppler study found increased vascularity in majority of cases of acute EPO with reactive hydrocele while vascularity was either normal or increased in chronic EPO without any reactive hydrocele. CONCLUSION: High-frequency gray scale USG helps in clear evaluation of anatomical structural alterations associated with acute scrotal inammatory diseases, and color Doppler USG is highly sensitive in diagnosing acute scrotal pathology. In addition, Color Doppler USG accurately differentiates between testicular ischemia and torsion from acute inammatory diseases in acute painful scrotal conditions.

High-Frequency Color Doppler Ultrasonography of the Spermatic Cord Arteries

2005 ◽  
Vol 24 (7) ◽  
pp. 905-909 ◽  
Author(s):  
Zelena A. Aziz ◽  
Keshthra Satchithananda ◽  
Mohammed Khan ◽  
Paul S. Sidhu
Keyword(s):  
High Frequency ◽  
Spermatic Cord ◽  
Doppler Ultrasonography ◽  
Color Doppler ◽  
Color Doppler Ultrasonography

scholarly journals Testicular Arteriovenous Malformation: Gray-Scale and Color Doppler Ultrasonography Features

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Fatih Gulsen ◽  
Ismail Mihmanli ◽  
Fatih Kantarci ◽  
Abdulkadir Eren ◽  
Suleyman Onder Ataus
Keyword(s):  
Differential Diagnosis ◽  
Arteriovenous Malformations ◽  
Doppler Ultrasonography ◽  
Color Doppler ◽  
Color Doppler Ultrasonography ◽  
Solid Mass ◽  
Gray Scale ◽  
Testicular Tumors ◽  
Doppler Us ◽  
Incidental Lesions

Intratesticular arteriovenous malformations (AVMs) are extremely rare benign incidental lesions of the testis. Ultrasonography (US) generally reveals a hypoechoic solid mass within the testicular parenchyma. We describe a patient with intratesticular AVM which was found incidentally during workup for infertility. The gray-scale and Doppler US appearance of an intratesticular AVM and the differential diagnosis have been presented. Based on the gray-scale, US appearance differentiation from malignant testicular tumors is difficult. Doppler US examination aids in the diagnosis by demonstrating the vascular nature of the tumor.

scholarly journals Oral Presentation III

2016 ◽  
Vol 8 (1) ◽  
pp. 15-20
Author(s):  
Seyed Ziaeddin Rasihashemi ◽  
Ali Ramouz ◽  
Nassir Rostambeigi
Keyword(s):  
Predictive Value ◽  
Doppler Ultrasonography ◽  
Thyroid Nodules ◽  
Color Doppler ◽  
Needle Aspiration ◽  
Benign Lesions ◽  
Fine Needle ◽  
Doppler Us ◽  
Color Doppler Us ◽  
Us Elastography

ABSTRACT BACKGROUND AND AIMS Thyroid nodules occur in more than 50% of populations over 50 years, and only 5% of thyroid nodules are malignant. This study was aimed to evaluate Doppler ultrasonography (US) combined with elastography in the diagnosis of the malignant thyroid nodules with suspicious fine needle aspiration cytological (FNAC) results. METHODS From August 2012 to March 2013, 107 consecutive patients eligible for thyroid surgery enrolled in the study. All patients underwent FNAC study followed by conventional US, color Doppler US, and US elastography with a real-time instrument. Thyroid nodules ultrasonographic parameters were evaluated during conventional and color Doppler US study and elastography performed in order to calculate the strain index (SI) by dividing the strain value of the nodule by that of the peripheral normal parenchyma, prior to thyroidectomy. RESULTS Of 161 nodules in 107 patients, 76 (47.2%) were benign lesions and 85 (52.8%) were malignant. The overall Doppler US score depicted a sensitivity of 64% and specificity of 59%. Using a cut of 2.905, the sensitivity and specificity for elastography US were about 54 and 76% respectively, with positive predictive value of 71.8% and negative predictive value of 59.8%. Evaluating quantitative elastography combined with Doppler US, out of 68 nodules with positive peripheral halo ring, 44 had elasticity ≥ 2.905, which was statistically significant (p < 0.001). CONCLUSION Quantitative elastography combined with Doppler US is more accurate in thyroid nodules diagnosis comparing to other methods and can limit the use of FNAC and the subsequent thyroidectomy in patients with nondiagnostic or unsatisfactory cytological findings.

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