Assuntos
Constrição Patológica/induzido quimicamente , Dieta Redutora/efeitos adversos , Transtornos da Cefaleia Primários/induzido quimicamente , Constrição Patológica/diagnóstico por imagem , Imagem de Difusão por Ressonância Magnética , Feminino , Transtornos da Cefaleia Primários/diagnóstico por imagem , Humanos , Angiografia por Ressonância Magnética , Adulto JovemRESUMO
OBJECTIVES: To define the normative values of scrotal vein diameters, investigate the eventual presence and characteristics of scrotal reflux in healthy subjects, and describe its implication for the diagnosis of scrotal varicocele. METHODS: Color-Doppler ultrasonography was performed on a population of 145 healthy, symptomless subjects, with clinical examinations and semen analyses within normal limits. RESULTS: The upper limit of the scrotal veins diameter (3.7-3.8mm) exceeds values presently employed for a diagnosis of varicocele. Furthermore, a high percentage of healthy subjects (53%) were found to have reflux in the scrotal veins, currently considered one of the criteria for diagnosing varicocele, especially in its subclinical form. CONCLUSIONS: To reduce the risk of misinterpretations between the various specialists involved in Color-Doppler ultrasonography and urologists, quantitative data of the scrotal veins (i.e., maximum diameter and the presence, velocity, and duration of reflux) should be described in reports of sonographic examinations performed for scrotal varicocele.
Assuntos
Escroto/irrigação sanguínea , Escroto/diagnóstico por imagem , Ultrassonografia Doppler em Cores , Adulto , Humanos , Masculino , Valores de Referência , Varicocele/diagnóstico por imagem , Veias/diagnóstico por imagemRESUMO
PURPOSE: To investigate whether an imaging technique combining color Doppler ultrasonography and selective renal artery digital subtraction angiography reduces contrast requirements in patients with progressive renal insufficiency undergoing renal artery angioplasty and stenting. METHODS: Eight patients (5 men; mean age 58 years) with renal artery stenosis and renal insufficiency underwent percutaneous transluminal angioplasty and stenting under color Doppler ultrasound guidance. RESULTS: Color Doppler ultrasound imaging yielded the information necessary for verifying catheter position, stent placement and expansion, and hemodynamics after revascularization. The combined imaging technique considerably reduced contrast requirements to only 10 mL in each case. No worsening of renal function was seen in any patient. CONCLUSIONS: The combined imaging procedure uses low doses of contrast agent and is especially suited to patients with renal dysfunction undergoing percutaneous renal revascularization.
