1,854 results match your criteria transperineal ultrasound


The effect of the birth method on changes of the prepartum and postpartum dimensions of perineal body.

Eur J Obstet Gynecol Reprod Biol 2021 May 5;262:36-39. Epub 2021 May 5.

Ministry of Health Ankara City Hospital, Department of Obstetrics and Gynecology, Turkey.

Objective: The perineal body is critical for maintaining the integrity of the pelvic floor, especially in females as it can be injured during vaginal delivery. This study aimed to evaluate the effect of childbirth on perineal body dimensions by using a transperineal 2D ultrasound.

Study Design: This prospective cohort study was performed in a tertiary obstetric care center. Read More

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The Association of Hiatal Dimensions and Urethral Mobility with Stress Urinary Incontinence.

J Ultrasound Med 2021 May 14. Epub 2021 May 14.

Second Xiangya Hospital, Central South University, China.

Objectives: To investigate the association of hiatal area (HA), bladder neck mobility, and urethral mobility during the cough stress test (CST) with stress urinary incontinence (SUI).

Methods: This was a prospective study of 110 continent and 190 incontinent women using transperineal ultrasound. HA, bladder neck mobility, and the mobility of six points along the urethra (Vectors 1-6) were measured. Read More

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Vesico-urethral anastomosis sampling: a forgotten tool for guiding salvage radiation after radical prostatectomy.

BJU Int 2021 May;127 Suppl 1:23-29

Department of Urology, Austin Health, Heidelberg, Vic., Australia.

Objective: To review the utility of vesicourethral anastomosis (VUA)-directed biopsy in the setting of biochemical recurrence (BCR) after radical prostatectomy (RP) for prostate cancer (PCa) in patients who have undergone evaluation by gallium-68 prostate-specific membrane antigen positron emission tomography with computed tomography ( Ga-PSMA PET/CT).

Methods: We completed a retrospective review of a prospectively maintained dataset from January 2015 to August 2020. Patient demographics were recorded for those who experienced BCR, as defined by a rise in prostate-specific antigen (PSA) level to above 0. Read More

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Towards Dosimetry for Prostate Radiotherapy with a Transperineal Ultrasound Array: A Simulation Study.

IEEE Trans Radiat Plasma Med Sci 2021 May 10;5(3):373-382. Epub 2020 Aug 10.

School of Electrical and Computer Engineering, University of Oklahoma, Norman, OK, 73019, USA.

X-ray-induced acoustic computed tomography (XACT) is a promising imaging modality to monitor the position of the radiation beam and the deposited dose during external beam radiotherapy delivery. The purpose of this study was to investigate the feasibility of using a transperineal ultrasound transducer array for XACT imaging to guide the prostate radiotherapy. A customized two-dimensional (2D) matrix ultrasound transducer array with 10000 (100×100 elements) ultrasonic sensors with a central frequency of 1 MHz was designed on a 5 cm×5 cm plane to optimize three-dimensional (3D) volumetric imaging. Read More

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Ultrasonographic evaluation of pelvic floor structure at antepartum and postpartum periods using three-dimensional transperineal ultrasound.

J Med Ultrason (2001) 2021 May 8. Epub 2021 May 8.

Department of Obstetrics and Gynecology, Saitama Medical University, 38 Morohongo Moroyama-machi, Iruma-gun, Saitama, 3500495, Japan.

Purpose: To examine the changes in the pelvic floor structure caused by pregnancy and delivery.

Methods: A total of 141 nulliparous women were examined with three-dimensional transperineal ultrasound (3D-TPU) at the 24th and 34th weeks of gestation, 5th day postpartum, and 1 month postpartum. Puborectalis muscle trauma was diagnosed and the area of levator hiatus (ALH) was measured. Read More

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Abdominal pressure and pelvic organ prolapse: is there an association?

Int Urogynecol J 2021 May 4. Epub 2021 May 4.

University of Sydney, Penrith, NSW, Australia.

Introduction And Hypothesis: The primary aim of this study was to assess for an association between maximal intra-abdominal pressure reached on Valsalva (MAP) and pelvic organ prolapse (POP) on subjective, clinical and sonographic evaluation. Another objective was to test for association between MAP and body mass index (BMI).

Methods: A retrospective cross-sectional study was carried out on 504 archived datasets of women seen for pelvic floor dysfunction symptoms between January 2017 to September 2019 at a tertiary urogynaecology clinic. Read More

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Risk of obstetric anal sphincter injury with fundal pressure in second stage of labor: Transperineal ultrasound study.

Neurourol Urodyn 2021 May 4. Epub 2021 May 4.

Department of Obstetrics and Gynecology, Medicalpark Göztepe Hospital, Istanbul, Turkey.

Aims: Clinical management of the second stage of labor and effectiveness of preventive measures for severe perineal tears are controversial. The aim of this study was to evaluate the effect of using uterine fundal pressure during the second stage of delivery on obstetric anal sphincter injury (OASI), among primiparous women using three-dimensional (3D) transperineal ultrasonography.

Methods: A total of 73 women who had their first vaginal birth were included in the study, the fundal pressure group included women where the fundal pressure maneuver was applied (n = 37); and the control group included women who delivered spontaneously without fundal pressure (n = 36). Read More

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Acute Toxicity in Hypofractionated/Stereotactic Prostate Radiotherapy of Elderly Patients: Use of the Image-guided Radio Therapy (IGRT) Clarity System.

In Vivo 2021 May-Jun;35(3):1849-1856

Department of Radiation Oncology, Istituto Nazionale Tumori - IRCCS - Fondazione G. Pascale, Naples, Italy.

Background: The use of intra-fractional monitoring and correction of prostate position with the Image Guided Radio Therapy (IGRT) system can increase the spatial accuracy of dose delivery. Clarity is a system used for intrafraction prostate-motion management, it provides a real-time visualization of prostate with a transperineal ultrasound. The aim of this study was to evaluate the use of Clarity-IGRT on proper intrafraction alignment and monitoring, its impact on Planning Tumor Volume margin and on urinary and rectal toxicity in elderly patients not eligible for surgery. Read More

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January 2021

Can ultrasound on admission in active labor predict labor duration and a spontaneous delivery?: Condensation: Ultrasound at the beginning of the active phase can predict length of labor and mode of delivery in nulliparous women.

Am J Obstet Gynecol MFM 2021 Apr 23:100383. Epub 2021 Apr 23.

National Center for Fetal Medicine, St. Olavs hospital, Trondheim University Hospital, Trondheim, Norway; Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway; Institute of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.

Background: Identifying predictive factors for a normal outcome at admission in the labor ward would be of value for planning labor care, timing interventions and in preventing labor dystocia. Clinical assessments of fetal head station and position at the start of labor have some predictive value but the value of ultrasound methods for this purpose has not been investigated. Studies using transperineal ultrasound before labor onset show possibilities of using these methods to predict outcome. Read More

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Development and internal validation of a prediction model of prostate cancer on initial transperineal template-guided prostate biopsy.

BMC Urol 2021 Apr 23;21(1):68. Epub 2021 Apr 23.

The Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, No. 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China.

Background: Due to the invasiveness of prostate biopsy, a prediction model of the individual risk of a positive biopsy result could be helpful to guide clinical decision-making. Most existing models are based on transrectal ultrasonography (TRUS)-guided biopsy. On the other hand, transperineal template-guided prostate biopsy (TTPB) has been reported to be more accurate in evaluating prostate cancer. Read More

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Limitations of overlapping cores in systematic and MRI-US fusion biopsy.

Urol Oncol 2021 Apr 19. Epub 2021 Apr 19.

Department of Urology, Singapore General Hospital, Singapore. Electronic address:

Objectives: To evaluate the clinically-significant prostate cancer (csCaP) detection rate of systematic (SBx) vs. targeted biopsy (TBx), after accounting for the overlapping systematic cores within the MRI regions of interest.

Materials And Methods: We identified 398 consecutive men who underwent both transperineal systematic and targeted biopsy between January 2015 to January 2019. Read More

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Development of a transperineal prostate biopsy robot guided by MRI-TRUS image.

Int J Med Robot 2021 Apr 22:e2266. Epub 2021 Apr 22.

State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, Heilongjiang, China.

Background: In the transrectal ultrasound (TRUS)-guided transperineal prostate biopsy, doctors determine the biopsy target by observing the prostate region in TRUS images. However, ultrasound images with low imaging quality make doctors easy to be interfered when determining the biopsy route, which reduces the biopsy success rate.

Methods: This paper introduces the guidance method of magnetic resonance image (MRI) registration to ultrasound image and develops a 5-degrees of freedom robot for prostate biopsy guided by MRI-TRUS image. Read More

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Demographic risk factors for pelvic organ prolapse: Do smoking, asthma, heavy lifting or family history matter?

Eur J Obstet Gynecol Reprod Biol 2021 Apr 12;261:25-28. Epub 2021 Apr 12.

Sydney Medical School Nepean, University of Sydney, Sydney, NSW, Australia.

Objective: Our objective was to identify non-obstetric risk factors for pelvic organ prolapse in women attending a urogynecology clinic.

Study Design: A retrospective study of 662 women referred for pelvic floor dysfunction between January 2017 and August 2018. Participants underwent a standardized interview, clinical exam including Pelvic Organ Prolapse Qualification (POP-Q) assessment, and four-dimensional transperineal ultrasound. Read More

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Advanced midwifery practice: intrapartum ultrasonography to assess fetal head station and comparison with vaginal digital examination.

Minerva Obstet Gynecol 2021 Apr;73(2):253-260

Department of Gynecology, Obstetrics and Urology, Sapienza University, Rome, Italy.

Background: Vaginal digital examination is considered the gold standard to evaluate patients during labor and delivery. However, transperineal ultrasound has been suggested as an effective tool in determining fetal head station during labor. Angle of progression (AOP), head-perineal distance (HPD) and head-symphysis distance (HSD) are reliable parameters to assess fetal head station during labor. Read More

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Optimizing biopsy strategy for prostate cancer: Bayesian framework of network meta-analysis and hierarchical summary receiver operating characteristic model for diagnostic accuracy.

Indian J Urol 2021 Jan-Mar;37(1):20-31. Epub 2021 Jan 1.

Department of Public Health, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia.

Overdiagnosis and overtreatment are well known problems in prostate cancer (PCa). The transrectal ultrasound (TRUS) Guided biopsy (GB) as a current gold standard investigation has a low positive detection rate resulting in unnecessary biopsies. The choice of optimal biopsy strategy needs to be defined. Read More

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January 2021

The effect of pessary treatment on puborectalis muscle function.

Int Urogynecol J 2021 Apr 13. Epub 2021 Apr 13.

Department of Reproductive Medicine and Gynecology, University Medical Center Utrecht, Utrecht, The Netherlands.

Introduction And Hypothesis: The objective was to assess if puborectalis muscle (PRM) function changes in women with pelvic organ prolapse (POP) undergoing pessary treatment.

Methods: This was a prospective cohort study of women with symptomatic POP choosing pessary treatment. An interview, clinical examination and 3D/4D transperineal ultrasound were performed at baseline and at 3-month follow-up. Read More

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The "breech progression angle": a new feasible and reliable transperineal ultrasound parameter for the fetal breech descent in the birth canal.

Ultrasound Obstet Gynecol 2021 Apr 13. Epub 2021 Apr 13.

Department of Obstetrics and Gynecology, Goethe University Frankfurt, Frankfurt, Germany.

Objectives: The aim of the present study was to assess the feasibility and reliability of transperineal ultrasound in the assessment of breech descent in the birth canal, by measuring the "breech progression angle".

Methods: We recruited pregnant women with singleton pregnancies and fetuses in breech presentation between 34 and 41 weeks' gestation. We acquired transperineal ultrasound images in the midsagittal view for each woman twice by an operator and once by another. Read More

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Transperineal core-needle biopsy of a rectal subepithelial lesion guided by endorectal ultrasound after contrast-enhanced ultrasound: A case report.

World J Gastroenterol 2021 Apr;27(13):1354-1361

Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China.

Background: Rectal subepithelial lesions (SELs) are commonly seen in endoscopic examination, generally manifested as bumps with a smooth surface. Precise preoperative diagnoses for rectal SELs are difficult because abnormal tissues are not easily to be obtained by regular endoscopic forceps biopsy. Traditional guidance modalities of preoperative biopsy, including endoscopic ultrasound, computed tomography, and transabdominal ultrasound, are often unsatisfactory. Read More

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Preoperative exercise interventions to optimize continence outcomes following radical prostatectomy.

Nat Rev Urol 2021 May 8;18(5):259-281. Epub 2021 Apr 8.

Specialty of Surgery, Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia.

Urinary incontinence is a common and predictable consequence among men with localized prostate cancer who have undergone radical prostatectomy. Despite advances in the surgical technique, urinary continence recovery time remains variable. A range of surgical and patient-related risk factors contributing to urinary incontinence after radical prostatectomy have been described, including age, BMI, membranous urethral length and urethral sphincter insufficiency. Read More

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[Treatment of patients with abscess of prostate gland by the method of percutaneous punction].

Urologiia 2021 Mar(1):45-49

Educational Institution Grodno State Medical University, Grodno, Republic of Belarus.

Objectives: Demonstrate the treatment of prostatic abscess with a minimally invasive method - abscess puncture with aspiration of purulent fluid and injection of an antibiotic into abscess cavity.

Materials And Methods: Diagnosis of prostatic abscess of 23 patients using ultrasonography, computed tomography and magnetic resonance imaging of the pelvic region. 19 patients with the abscess within the prostatic capsule were treated with perineal percutaneous puncture method with aspiration of the abscess fluid and injection of antibiotics into cavity. Read More

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Feasibility, safety, and efficacy of ultrasound-guided transperineal laser ablation for the treatment of benign prostatic hyperplasia: a single institutional experience.

World J Urol 2021 Apr 3. Epub 2021 Apr 3.

Department of Urology, Humanitas Clinical and Research Center-IRCCS, Rozzano, Italy.

Purpose: To evaluate the feasibility, safety, and efficacy of ultrasound-guided transperineal laser ablation (TPLA) as a new minimally invasive surgical therapy (MIST) for the treatment of lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH).

Materials And Methods: Under local anesthesia and conscious sedation up to two laser fibers for each prostatic lobe were inserted under US-guidance by a percutaneous approach. TPLA was performed using a continuous wave diode laser (SoracteLite-EchoLaserX4) able to generate a light-induced thermal heating and subsequent coagulative necrosis of the prostatic tissue. Read More

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Comparative Effectiveness of Techniques in Targeted Prostate Biopsy.

Cancers (Basel) 2021 Mar 22;13(6). Epub 2021 Mar 22.

USC Institute of Urology and Catherine & Joseph Aresty Department of Urology, Center for Image-Guided and Focal Therapy for Prostate Cancer, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA.

In this review, we evaluated literature regarding different modalities for multiparametric magnetic resonance imaging (mpMRI) and mpMRI-targeted biopsy (TB) for the detection of prostate cancer (PCa). We identified studies evaluating systematic biopsy (SB) and TB in the same patient, thereby allowing each patient to serve as their own control. Although the evidence supports the accuracy of TB, there is still a proportion of clinically significant PCa (csPCa) that is detected only in SB, indicating the importance of maintaining SB in the diagnostic pathway, albeit with additional cost and morbidity. Read More

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An abdominal-sacral approach with preoperative embolisation for vulvar solitary fibrous tumour: a case report.

World J Surg Oncol 2021 Mar 29;19(1):92. Epub 2021 Mar 29.

Department of Obstetrics and Gynecology, Shiga University of Medical Science, Setatsukinowa-cho, Otsu, Shiga, 520-2192, Japan.

Background: Solitary fibrous tumours (SFTs) in the female genital tract are uncommon. Resection of these tumours is controversial because it can cause life-threatening haemorrhage. We report a case of vulvar SFT that was excised in a combined abdominal-sacral approach after preoperative embolisation. Read More

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Ultrasound-guided transperineal laser ablation for percutaneous treatment of benign prostatic hyperplasia: a new minimally invasive interventional therapy.

Acta Radiol 2021 Mar 28:2841851211003289. Epub 2021 Mar 28.

Department of Ultrasound, Zhejiang Hospital, Hangzhou, Zhejiang Province, PR China.

Background: Although there are different treatments for benign prostate hyperplasia, their efficacy and safety differ. We are currently exploring a new minimally invasive interventional therapy for benign prostatic hyperplasia (BPH).

Purpose: To determine the feasibility, effectiveness, and safety of ultrasound-guided transperineal laser ablation (US-TPLA) for the treatment of BPH. Read More

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Postpartum perineal muscle sonogram in Madura beef cow.

Vet World 2021 Feb 10;14(2):380-392. Epub 2021 Feb 10.

Division of Veterinary Reproduction, Obstetrics and Gynecology, Department of Veterinary Clinic, Reproduction, and Pathology, Faculty of Veterinary Medicine, Bogor Agricultural University, Bogor, West Java of Indonesia.

Background And Aim: Ultrasonography (USG) is useful for non-invasively identifying changes that occur in soft tissue architecture. The objective of this research was to demonstrate postpartum (PP) uterine involution through the changes of perineal muscle intensity and thickness in Madura beef cow by ultrasonography.

Materials And Methods: Madura's breed cows used in the research consist of eight non-pregnant (NP) cows and three PP cow. Read More

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February 2021

External validation and comparison of magnetic resonance imaging-based predictive models for clinically significant prostate cancer.

Urol Oncol 2021 Mar 25. Epub 2021 Mar 25.

Department of Urology, Singapore General Hospital, Singapore.

Purpose: Several multiparametric magnetic resonance imaging (mpMRI)-based models have been developed with significant improvements in diagnostic accuracy for clinically significant prostate cancer (csCaP), but lack proper external validation. We therefore sought to externally validate and compare all published mpMRI-based csCaP risk prediction models in an independent Asian population.

Patients And Methods: A total of 449 men undergoing combined transperineal fusion-targeted/systematic prostate biopsy at our specialist center between 2015 to 2019 were retrospectively analyzed. Read More

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Reliability of ultrasound imaging of pelvic floor morphology and function among females who have undergone pelvic radiotherapy.

Neurourol Urodyn 2021 Mar 19. Epub 2021 Mar 19.

Department of Rehabilitation, Faculté de Médecine, Université Laval, Québec, Québec, Canada.

Aims: To investigate the intra- and inter-rater reliability of two-dimensional (2D) transperineal ultrasound imaging (USI) measures of bladder wall thickness (BWT), urethral length (UL), and parameters related to levator plate length (LP) and transient changes in LP during pelvic floor muscle (PFM) contraction, and on Valsalva in women who received radiation therapy (RT) for treatment of pelvic cancer.

Methods: Twenty women with a history of RT for the treatment of pelvic cancer were assessed independently by two raters on the same day. Five outcomes were assessed for reliability: BWT, UL, and LP at rest (LP-R), during a maximal voluntary contraction of the PFMs (LP-MVC), and during a maximal-effort Valsalva maneuver (LP-MVM). Read More

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Vaginal birth after Cesarean section and levator ani avulsion: a case-control study.

Ultrasound Obstet Gynecol 2021 Mar 16. Epub 2021 Mar 16.

Department of Obstetrics and Gynecology, Faculty of Medicine in Plzen, Charles University, Czech Republic.

Objective: The aim of the study was to explore the risk of levator ani avulsion and levator hiatus enlargement following vaginal birth after cesarean section (VBAC) in comparison to primiparous women after their first vaginal delivery.

Methods: In this multicenter observational cohort study we identified all women who had a term VBAC for their second delivery at the Departments of Gynecology and Obstetrics, Faculty of Medicine in Pilsen and the 1st Faculty of Medicine , Prague, Charles University, Czech Republic between 2012 and 2016. Women having a repeat VBAC, preterm birth or stillbirth were excluded from the study. Read More

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Image-guided robots for low dose rate prostate brachytherapy: Perspectives on safety in design and use.

Int J Med Robot 2021 Jun 10;17(3):e2239. Epub 2021 Mar 10.

Robotics & Engineering Research Center, Harbin University of Science and Technology, Harbin, China.

Background: Image-guided brachytherapy (BT) robots can be used to assist urologists during seed implantation, thereby improving therapeutic effects. However, safety issues must be considered in the design of such robots, including their structure, mechanical movements, function, materials and actuators. Previous reviews focused on image-guided prostate BT robot technology (e. Read More

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