Color Doppler ultrasonography as a routine clinical examination in male infertility

Sasaki, Hideo; Saito, Katsuyuki; Shichizyo, Takeshi; Ishikawa, Kiyomu; Igarashi, Atushi; Yoshida, Hideki

doi:10.1111/j.1442-2042.2006.01499.x

Cited by 63 publications

(57 citation statements)

References 31 publications

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“…Essa patologia é caracterizada pela presença de calcificações intratubulares compostas por múltiplas camadas de fibras colágenas, sem a formação de sombra acústica. A doença está frequentemente associada a neoplasias testiculares, e, quando diagnosticada, requer acompanhamento ultrassonográfico anual (Dogra et al 2003, Sakamoto et al 2006. Embora essas formações não apresentem sombra acústica posterior, ocasionalmente podem gerar artefatos em cauda de cometa ou um padrão cintilante ao doppler colorido (Roy & Tuchmann 2003).…”

Section: Discussionunclassified

Análise quantitativa da ecogenicidade testicular pela técnica do histograma de ovinos da baixada ocidental maranhense

et al. 2015

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RESUMO.-A ultrassonografia é um método de diagnóstico por imagem que permite a avaliação de diferentes órgãos e estruturas corpóreas de maneira não invasiva. No entanto, a avaliação subjetiva das imagens caracteriza um dos grandes entraves na utilização desta técnica de diagnósti-co, havendo necessidade de mecanismos que minimizem a subjetividade do exame e a divergência na interpretação dos achados ultrassonográficos. Desta forma este trabalho objetivou caracterizar a ecogenicidade do parênquima e mediastino testicular de ovinos utilizando a técnica do histograma escala-cinza. Foram utilizados 30 animais divididos em três grupos de acordo com a faixa etária (FE): de três a seis meses (FE1), sete a 12 meses (FE2), 13 a 18 meses (FE3) e realizadas varreduras testiculares nos planos frontal, sagital e transversal, elaborando ao final um histo- Ultrasound is a diagnostic imaging method that allows a no invasive evaluation of different organs and body structures. However, the personal evaluation of images is one of the major hampers in using this technique. In order to reduce this drawback, it is necessary to find out tools that can help diminish the divergence in the interpretation of sonographic findings. Therefore, this study aimed to identify features of the parenchyma's and mediastinum's testis of sheep echogenicity using the technique of gray scale histogram. 30 animals were divided into three groups according to age (FE): three to six months (FE1), seven to 12 months (FE2), 13 to 18 months (FE3). The testicular scans were performed in the frontal, sagital and transverse views, and the gray scale histograms were analyzed. It was observed that such parenchymal as the mediastinum testis echogenicity gradually increased with the aging of the animals, with mean and standard deviation of 95.00±19.05 and 94.35±18.82 for the echogenicity parenchyma of the right and left antimere, respectively, and 127.95±12.97 to 126.59±11.78, for the right and the left mediastinum. The technique of gray scale histogram was an efficient method for determination of testicular echogenicity, enabling the establishment of normal standards that may assist future research in monitoring testicular development as well as for detecting pathologies. For exclusive regimes of extensive farming, as the western lowland region of Maranhão, is a valuable tool for use in social projects of the State to attend the family farm.

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Section: Discussionunclassified

Análise quantitativa da ecogenicidade testicular pela técnica do histograma de ovinos da baixada ocidental maranhense

et al. 2015

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“…It has been detected in 20-40% of the infertile men and is the main cause of male infertility [2][3][4]. Since infertility-related varicocele may be treated, radiological diagnosis is very important in the detection of this disease.…”

Section: Introductionmentioning

confidence: 99%

“…However, with the recent advances in functional magnetic resonance imaging (MRI) techniques, varicocele and testicular parenchymal tissue may be evaluated as well [4][5][6]. Diffusion-weighted imaging (DWI) is a functional MRI technique, and is the measurement of the decrease and increase of microscopic water movements within the tissue A reduction of movement of water molecules in tissue is defined as the diffusion restriction [7,8].…”

Section: Introductionmentioning

confidence: 99%

Comparison of diffusion-weighed MRI findings of the testis in patients with the advanced stage unilateral testicular varicocele

Burulday¹,

Şahan²,

Erdem³

et al. 2017

Med-Science

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The aim of this study was to compare the testicular apparent diffusion coefficient (ADC) values of the patients with unilateral advanced stage varicocele and healthy volunteers. Twenty-seven patients with unilateral advanced stage varicocele and twenty-seven healthy volunteers were included in the study. Those with a diagnosis of clinical varicocele and the healthy volunteers were examined clinical and color Doppler ultrasonography. Patients with a unilateral (left) varicocele clinically grade III, color Doppler ultrasound grade IV-V were included in the study. All the patients and healthy volunteers were obtained ADC values. Mean values were calculated and statistical comparison was performed. ADC values were analysed by using an independent t test for each participant. Pearson's correlation test was used for the comparison of left pampiniform venous diameter and both testicular parenchymal ADC values. Left testicular ADC values were observed to be significantly lower when a comparison of the testicular parenchymal with left advanced stage varicocele and healthy volunteers revealed significantly low left testicular ADC values in patients (p<0.05) Furthermore, a negative correlation was detected between the increase in the left testicular venous diameter and parenchymal ADC values of the bilateral testis in patients with left advanced stage varicocele (left p= -624, right p= -0.382). Diffusion weighted magnetic resonance imaging may be beneficial in defining the testicular damage in patients with varicocele.

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“…Color Doppler ultrasonography has become a valuable method for diagnosing scrotal abnormalities in the infertile population (Sakamoto et al, 2006;Qublan et al, 2007), which increases the frequency of diagnosing TM. In infertile patients undergoing scrotal ultrasonography, the incidence of TM varies from 1.5% to 2.8% (Ganem et al, 1999;Qublan et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…T esticular microlithiasis (TM) is a rare pathologic condition that is usually discovered incidentally during testicular ultrasound evaluation for other conditions, such as infertility (Aizenstein et al, 1998;Sakamoto et al, 2006;Qublan et al, 2007). Microliths are randomly scattered throughout the seminiferous tubules of testicular parenchyma and cause infertility in some men by seminiferous tubule obstruction (Smith et al, 1999).…”

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confidence: 99%

Nanobacteria May Be Linked to Testicular Microlithiasis in Infertility

Zhang¹,

Lu²,

Shen³

et al. 2010

Journal of Andrology

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Testicular microlithiasis (TM) in infertility is an uncommon pathologic condition of unclear etiology that is characterized by calcium deposits within the seminiferous tubules. Nanobacteria (NB), as novel microorganisms mediating tissue calcification, have been discovered in some diseases. In this study, we hypothesized that NB may participate in the pathogenesis of TM, particularly in infertility. Seventeen infertility patients with TM detected by scrotal color Doppler ultrasonography and 17 infertility patients without TM as controls were enrolled in the study. The NB were isolated and cultured from semen samples and urine samples. After 3 to 6 weeks of culture, 10 of 17 (58.8%) semen samples and 2 urine samples from infertile patients with TM showed the growth of white granular microbes that firmly attached to the bottom of the culture flask and were visible to the naked eye. In the control group, only 1 of 17 (5.9%) semen samples from infertile patients without TM showed the growth of white granular microbes. The cultured microbes were identified by indirect immunofluorescent staining (IIFS), transmission electron microscopy (TEM), and 16s rRNA gene expression. IIFS and TEM revealed NB to be coccoid and 100 to 500 nm in diameter. The BLAST result revealed that the 16s rRNA gene sequence from the cultured microbes was 97% the same as that of the known NB. Our results showed that NB may be linked to the development of TM, which may provide a potential target for the diagnosis and treatment of infertility with TM.

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Color Doppler ultrasonography as a routine clinical examination in male infertility

Cited by 63 publications

References 31 publications

Análise quantitativa da ecogenicidade testicular pela técnica do histograma de ovinos da baixada ocidental maranhense

Análise quantitativa da ecogenicidade testicular pela técnica do histograma de ovinos da baixada ocidental maranhense

Comparison of diffusion-weighed MRI findings of the testis in patients with the advanced stage unilateral testicular varicocele

Nanobacteria May Be Linked to Testicular Microlithiasis in Infertility

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