A Reliable and Robust Method of Measuring Male Pelvic Floor Muscle Volume Using Three-dimensional Computed Tomography
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- SHIMIZU FUMITAKA
- Department of Urology, Juntendo University Graduate School of Medicine
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- ABUDUREZAKE ABULAITI
- Sportology Center, Juntendo University Graduate School of Medicine
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- DIABANGOUAYA MYRIAM
- Department of Urology, Juntendo University Graduate School of Medicine
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- TANAKA YASUNARI
- Department of Urology, Juntendo University Graduate School of Medicine
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- KOBAYASHI TAKURO
- Department of Urology, Juntendo University Graduate School of Medicine Department of Advanced Informatics for Genetic Diseases, Juntendo University Graduate School of Medicine
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- IDE HISAMITSU
- Department of Urology, Juntendo University Graduate School of Medicine Department of Digital Therapeutics, Juntendo University Graduate School of Medicine
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- TAMURA YOSHIFUMI
- Sportology Center, Juntendo University Graduate School of Medicine Department of Sports Medicine and Sportology, Juntendo University Graduate School of Medicine Department of Metabolism and Endocrinology, Juntendo University Graduate School of Medicine
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- HORIE SHIGEO
- Department of Urology, Juntendo University Graduate School of Medicine Department of Advanced Informatics for Genetic Diseases, Juntendo University Graduate School of Medicine Department of Digital Therapeutics, Juntendo University Graduate School of Medicine
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<p>Objectives The pelvic floor muscle (PFM) plays a major role in sexual and urinary functions. No objective method exists to measure the PFM in male. This study evaluated the reliability of male PFM volume using three-dimensional computed tomography (3D-CT).</p><p>Methods PFMs of five patients aged 43-83 years were selectively extracted from thin-slice CT using a workstation to reconstruct stereoscopic images and measure PFM volume. Two raters measured the PFM volume three times in all patients to confirm the reliability of PFM volume measurement. Intra- and inter-rater correlation coefficients, i.e., intraclass correlation coefficient, were determined. The CT attenuation of PFMs was also evaluated.</p><p>Results Raters 1 and 2 reported an average PFM volume of 46.4 ± 11.5 cm3 and 46.1 ± 12.5 cm3, respectively. The intra- and inter-rater correlation coefficients were 0.99 and 0.98, respectively. The average CT value of PFMs had a minimum of 13.7 Hounsfield Unit (HU) in the eldest male and a maximum of 38.9 HU in the youngest male.</p><p>Conclusions Male PFMs could be selectively extracted using a workstation to reconstruct a stereoscopic image. The PFM volume measurement is feasible and highly reproducible. To our knowledge, this is the first study that standardizes the method for measuring the male PFM volume using 3D-CT and examines its reliability.</p>
収録刊行物
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- 順天堂醫事雑誌
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順天堂醫事雑誌 70 (6), 429-435, 2024
順天堂医学会
