A testicular tubule evaluation method by ultrasonic array probe

Takashima, Yuya; Kuramoto, Kei; Kobashi, Syoji; Hata, Yutaka; Ishikawa, Tomomoto

doi:10.1109/fuzzy.2011.6007362

Cited by 3 publications

(5 citation statements)

References 7 publications

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“…[8], [12], from relation of diameter and frequency, we evaluate only rate of large line by amplitude value which applied band pass filters as an evaluate system before surgery. In this study, from same relation, we evaluate existing and distance of large line as a surgery support system.…”

Section: Discussionmentioning

confidence: 99%

Ultrasonic Evaluation of Seminiferous Tubules by Frequency Map

Takashima

Ishikawa

Kobashi

et al. 2012

2012 Fifth International Conference on Emerging Trends in Engineering and Technology

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This paper describes a seminiferous tubules evaluation system using an ultrasonic probe. This system evaluates diameters of seminiferous tubules for azoospermia patients. We employ a 5.0MHz ultrasonic single probe. In the experiment, we employ large and small nylon lines as the healthy and unhealthy seminiferous tubules. We acquired the waveforms by the ultrasonic probe and calculated frequency spectrum by short-time Fourier transform. The system visualizes the position of small and large line by a frequency map. The frequency map shows distance and frequency value. In the results, our proposed method detected the large and small lines. Additionally, the system evaluated distance between probe and these lines clearly. The proposed method thus successfully evaluated the position of the large lines.

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Section: Discussionmentioning

confidence: 99%

Ultrasonic Evaluation of Seminiferous Tubules by Frequency Map

Takashima

Ishikawa

Kobashi

et al. 2012

2012 Fifth International Conference on Emerging Trends in Engineering and Technology

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“…The single 5.0 MHz probe used here is lower cost than array probe used in [8]. Thus this method has advantage of cost and tractability as well as accuracy.…”

Section: Discussionmentioning

confidence: 99%

“…The notation N S denotes number of small lines, and N L denotes number of large lines. In Fig.11, the red line shows our evaluation result, the green line shows evaluation method in [8], the purple line shows MRA result and the blue line shows the true value. As shown in this figure, the rate of large line increased with the increment of the number of large line.…”

Section: S Rfx(an) (Rf)mentioning

confidence: 99%

“…RF L (a) and RF H (a) is defined as the ratio of the cumulative relative frequency of low frequency domain and high frequency domain, respectively. These are calculated by (7) and (8). From the learning data, we select most suitable RF L (a) and RF H (a) to evaluate large line rate from the calculated absolute correlation coefficients between true rate of large line and RF L (a) or RF H (a) for all a.…”

Section: Evaluation Of Rate Of Large Linementioning

confidence: 99%

“…In our previous study [8], we proposed a method to evaluate a rate of large line of a phantom by a 1.0MHz ultrasonic array probe. The phantom lined up large and small lines in total 24 in parallelisms.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ultrasonic thickness evaluation of seminiferous tubule by fuzzy inference

Takashima

Ishikawa

Kuramoto

et al. 2012

2012 IEEE International Conference on Fuzzy Systems

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Abstract-This paper describes a seminiferous tubules evaluation using an ultrasonic probe. In this system, we evaluate a diameter of seminiferous tubules for azoospermia patients. We employ a 5.0MHz ultrasonic single probe. In the experiment, we employ large and small nylon lines as the healthy and unhealthy seminiferous tubules. We made ball shape phantom from small and large lines in total 24. We acquire the waveforms by the ultrasonic probe and calculate amplitude values from the data that band pass filters applied. We then calculate cumulative relative frequency of amplitude values. Fuzzy if-then rules are made for the cumulative relative frequency of large and small lines. We evaluate a rate of large lines among all lines by using the fuzzy MIN-MAX center-of-gravity method. In the result, the mean absolute error was 5.98 %. The correlation coefficient was 0.98. The proposed method thus successfully evaluated the rate of the large lines.

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Computational Medical and Health Care Technology

Hata

Nakajima

2013

2013 IEEE 43rd International Symposium on Multiple-Valued Logic

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A testicular tubule evaluation method by ultrasonic array probe

Cited by 3 publications

References 7 publications

Ultrasonic Evaluation of Seminiferous Tubules by Frequency Map

Ultrasonic Evaluation of Seminiferous Tubules by Frequency Map

Ultrasonic thickness evaluation of seminiferous tubule by fuzzy inference

Computational Medical and Health Care Technology

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