Three-dimensional transrectal sonography of the bulbo-urethal glands

Strasser, Hannes; Janetschek, G.; Bartsch, G.

doi:10.1007/bf00184943

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…The positions of the individual planes are indicated in the two other planes by reference lines. The three planes can be targeted on any site recorded in the volume scan, using three position keys [9][10][11].…”

Section: Methodsmentioning

confidence: 99%

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The value of three‐dimensional transrectal ultrasonography in staging prostate cancer

et al. 2007

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RESULTSPathological staging of specimens showed extracapsular extension in 69 patients, of whom 53 had pathological capsular perforation and 16 had seminal vesicle invasion. 3D-TRUS identified 58 patients with sites of extracapsular extension with 84% sensitivity, 96% specificity, 94% positive predictive value, 91% negative predictive value and an overall accuracy of 92%. Of the 16 patients with seminal vesicle invasion 14 were identified correctly on 3D-TRUS. Overall the 3D-TRUS staging sensitivity was 84%, specificity 96%, positive predictive value 93%, negative predictive value 91% and accuracy 91%. CONCLUSIONS3D-TRUS seems to be an accurate technique for staging localized prostate cancer. If 3D-TRUS indicates locally advanced disease, the probability of capsular perforation or seminal vesicle invasion is very high.

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Section: Methodsmentioning

confidence: 99%

“…Apart from the additional information obtained by the third, i.e. the coronal plane, this technique permits precise 3D analyses of relevant anatomical and pathological structures [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

The value of three‐dimensional transrectal ultrasonography in staging prostate cancer

et al. 2007

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Transrektale dreidimensionale Sonographie

et al. 2004

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In 3-D transrectal ultrasound it is possible, for the first time, to investigate the region of interest in three planes simultaneously. Exact examination of the organs of the small pelvis as well as of pathologic changes in the region of the pelvic floor can be performed with this new imaging technique. The bulbourethral glands can be investigated routinely, which enables the diagnosis of cysts of these glands. The prostatic zones, their relations as well as the growth of the transitional zone during the development of benign prostatic hyperplasia can be visualized. Furthermore, 3-D transrectal ultrasound allows investigation of morphology and function of the rhabdosphincter. The contractility of the muscle can be quantified. 3-D ultrasound guided puncture and drainage of prostatic abscesses represents a minimally invasive therapeutic modality. This technique can be used to place needles as well as implants in the lower urinary tract. Generally, 3-D transrectal ultrasound offers new diagnostic and therapeutic possibilities.

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Three-dimensional transrectal ultrasound of the male urethral rhabdosphincter

et al. 2004

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The rhabdosphincter of the male urethra is an omega-shaped loop of striated muscle fibers that surrounds the membranous urethra at its lateral and anterior aspects. We investigated whether this muscle can be visualized by means of three-dimensional ultrasound to define morphological and dynamic ultrasound criteria. We examined the rhabdosphincter of the male urethra in 77 patients by means of this new imaging technique; 37 patients presented with urinary stress incontinence after transurethral resection of the prostate or radical prostatectomy while 40 were fully continent after radical prostatectomy and served as a control group. Contractility of the muscle was quantified by a specially defined parameter (rhabdosphincter-urethra distance). The anatomical arrangement and the contractions of the rhabdosphincter-loop could be clearly visualized in three-dimensional transrectal and transurethral ultrasound; during contraction the rhabdosphincter retracts the urethra, pulling it towards the rectum. We detected defects and postoperative scarrings in the majority of the patients with postoperative urinary stress incontinence. Furthermore, the patients presented with thinnings in parts of the muscle and atrophies of the rhabdosphincter. The rhabdosphincter-urethra distance was significantly lower in the incontinent group than in the continent group (59 vs. 1.42 mm). Our study shows that the rhabdosphincter of the male urethra can be visualized by means of three-dimensional transrectal ultrasound. The sonographic pathomorphological findings of postoperative urinary stress incontinence are well correlated well with the clinical symptoms.

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Three-dimensional transrectal sonography of the bulbo-urethal glands

Cited by 5 publications

References 9 publications

The value of three‐dimensional transrectal ultrasonography in staging prostate cancer

The value of three‐dimensional transrectal ultrasonography in staging prostate cancer

Transrektale dreidimensionale Sonographie

Three-dimensional transrectal ultrasound of the male urethral rhabdosphincter

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