Publications by authors named "Wen Lieming"

Background: This study aimed to compare the diagnostic efficiency of Ovarian-Adnexal Reporting and Data System (O-RADS) and doctors' subjective judgment in diagnosing the malignancy risk of adnexal masses.

Methods: This was an analysis of 616 adnexal masses between 2017 and 2020. The clinical findings, preoperative ultrasound images, and pathological diagnosis were recorded.

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Objectives: To explore the differences in assessing obstetric anal sphincter injuries (OASI) between transperineal ultrasound (TPUS) and endoanal ultrasound (EAUS) and test relationships between ultrasound findings and anal incontinence (AI) symptoms.

Methods: A group of 196 women with a history of vaginal delivery was recruited. OASI was detected in a set of 5 slices by EAUS and 8 slices by TPUS.

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Objectives: International Ovarian Tumor Analysis (IOTA) working group proposed a logistic regression (IOTA LR2) model. It is served as a risk prediction model for benign and malignant adnexal tumors. This study aims to compare the diagnostic efficiency between the IOTA LR2 model and doctors' subjective assessment on diagnosing benign and malignant adnexal mass.

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Introduction And Hypothesis: This study was aimed at describing the morphological characteristics of the normal female anal sphincter complex (ASC) by high-resolution transperineal ultrasound (TPUS) and endoanal ultrasound (EAUS).

Methods: Thirty volunteers, including 19 nulliparous and 11 women who had only given birth by Cesarean section, were recruited. The ASC was shown in a set of five slices by EAUS and 8 slices by TPUS.

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Purpose: This study compared the diagnostic performance of the Ovarian-Adnexal Reporting and Data System (O-RADS), the Risk of Malignancy Index 4 (RMI4), the International Ovarian of Tumor Analysis Logistic Regression Model 2 (IOTA LR2), and the IOTA Simple Rules (IOTA SR) in predicting the malignancy of adnexal masses (AMs).

Methods: This retrospective study included 575 women with AMs between 2017 and 2020. All clinical messages, ultrasound images, and pathological findings were collected.

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Objectives: To describe the urethral course and position during urine leakage based on the visualized urethral mobility profile (UMP) and to explore the differences between supine and standing positions.

Method: This was a prospective study of 100 women with SUI and 100 control women who underwent a cough stress test (CST) with transperineal ultrasound (TPUS) in supine and standing positions. In the mid-sagittal plane, the UMP software automatically placed six equidistant points from the bladder neck (point 1) to the external urethral meatus (point 6).

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Objectives: To describe the ultrasonographic signs of ovarian collision tumors and evaluate the malignancy risk using the O-RADS system.

Methods: This was a retrospective analysis of 25 ovarian collision tumors from 8739 patients between May 2010 and January 2020. All clinical characteristics, ultrasound images, and histological findings were collected and analyzed.

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Purpose: This study aimed to evaluate the learning curve and explore the difficult points of the Ovarian-Adnexal Reporting and Data System (O-RADS) ultrasound risk stratification system.

Methods: One hundred adnexal masses (AMs) were randomly selected for five tests as training data. Two experienced trainers had an inter-rater agreement of 0.

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Objectives: To describe the urethral mobility during urine leaking in stress urinary incontinence (SUI) by transperineal ultrasound (TPUS) with urethral mobility profile (UMP) analysis.

Methods: This was a prospective study of 380 women who had a cough stress test (CST) with TPUS. UMP software automatically placed six equidistant points from the bladder neck (Point 1) to the external urethral meatus (Point 6) and determined their x and y coordinates relative to the symphysis pubis.

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Purpose: The aim of this study was to explore differences in the bladder neck configuration and segmental urethral mobility during the cough stress test (CST) in the supine and standing positions between women with and without stress urinary incontinence (SUI).

Methods: This prospective study included 100 control women and 100 incontinent women who had a CST with transperineal ultrasonography. The bladder neck configuration and urethral mobility were described in terms of urethral funneling, bladder neck descent (BND), retrovesical angle (RVA), urethral rotation angle, and urethral mobility at six points along the urethra (vectors 1 to 6).

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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.

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Recent studies suggest that pregnancy may not be absolutely contraindicated in women with moderate pulmonary hypertension. We aimed to evaluate the long-term outcomes of pregnant women with pulmonary hypertension diagnosed by echocardiography in our clinical department. Pregnant women with pulmonary hypertension, diagnosed by a pulmonary systolic arterial pressure > 30 mmHg via echocardiography, who were admitted in our department for termination of pregnancy or delivery between 2004 and 2016 were included in this retrospective cohort study.

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Introduction And Hypothesis: The objective was to describe the behaviour of the bladder neck and proximal urethra during urine leaking in the cough stress test (CST) in supine and standing positions using transperineal ultrasound (TPUS).

Method: We carried out prospective data collection and a retrospective data analysis of 102 women with stress urinary incontinence (SUI) who had a positive CST with TPUS in the supine and/or standing position. On TPUS, the behaviour of the bladder neck and proximal urethra was described by the urethral length, urethral funnelling, bladder neck descent (BND), retrovesical angle (RVA) and urethral rotation angle (URA).

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Objectives: To quantitatively assess the quality of the urethral rhabdosphincter muscle by measuring its shear wave velocity (V ) and calculating the Young modulus (E) with supersonic shear wave imaging (SSI).

Methods: This was a prospective study of 43 women with SUI and 52 female control participants who underwent a transperineal US examination with SSI. Supersonic shear wave imaging was performed at rest with a linear transducer and a specialized-preset procedure.

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Introduction And Hypothesis: The objective was to apply tomographic ultrasound imaging (TUI) to diagnose urethral diverticulum (UD) and summarize the specific imaging findings.

Methods: This was a retrospective analysis of 42 women with a paraurethral cyst. All women underwent a clinical interview, three-dimensional pelvic floor ultrasound and a transvaginal cystectomy between May 2016 and March 2019.

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Objectives: To assess the association between a widened vaginal canal on volume-rendered ultrasound (US) imaging with concealed uterine prolapse.

Methods: This work was a retrospective study of 253 women who had an International Continence Society Pelvic Organ Prolapse Quantification System examination and translabial US examination. The anteroposterior diameter of the vaginal canal was measured in the rendered axial plane for all women.

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Aim: To compare the evaluations of evaluate levator ani muscle injury (LAMI) by tomographic ultrasound imaging (TUI) and multiplanar (MP) ultrasound in patients with pelvic organ prolapse (POP).

Method: This retrospective analysis studied women who underwent International Continence Society POP quantification examination between October 2015 and June 2016. LAMI was assessed by both TUI and MP ultrasounds.

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Objectives: To use Z scores to quantify hiatal distensibility and to test the performance of Z scores for levator hiatal areas in predicting substantial pelvic organ prolapse (POP).

Methods: We undertook a retrospective study of the data from 145 nulliparas and 166 patients with POP who had a clinical POP examination with 3-dimensional translabial ultrasonography. Z scores were used to normalize levator hiatal areas of nulliparas.

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Purpose: We studied correlations between sonographic and urodynamic findings after suburethral sling surgery.

Materials And Methods: This retrospective study was done in 141 women who underwent multichannel urodynamic testing and translabial 4-dimensional ultrasound after suburethral sling surgery between 2006 and 2016. We determined the sling-pubis gap, ie the distance between the sling and the inferior posterior margin of the pubic symphysis, during the Valsalva maneuver and the urethral motion profile.

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Objectives: To analyze the association between the anteroposterior hiatal diameter and pelvic organ prolapse and to determine whether 2-dimensional translabial ultrasonography can evaluate hiatal ballooning by measuring the anteroposterior diameter.

Methods: This study was a retrospective analysis of 312 women seen for lower urinary tract symptoms or pelvic organ prolapse between December 2014 and July 2016. All women had an International Continence Society (ICS) Pelvic Organ Prolapse Quantification (POP-Q) system examination and 4-dimensional translabial ultrasonography.

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Aim: This study represents the first attempt to use 'Z-scores' to assess levator hiatal dimensions and quantify hiatal expansion.

Methods: We undertook a retrospective study on the data of 110 nulliparae and 73 pelvic organ prolapse (POP) patients who had a clinical POP exam and translabial 4-D ultrasound. We used Z-scores to normalize the dimensions of nulliparae levator hiatus and to build a Z-score model to evaluate the 'hiatal ballooning' against the POP staging.

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