US Imaging for the Assessment of LUTS

Lower Urinary Tract Symptoms Clinical Trial

Official title:

Ultrasound Imaging for the Assessment of Lower Urinary Tract Symptoms

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT06323109
• Other study ID #: 2023-1331
• Secondary ID: A196200Protocol
• Status: Recruiting
• Start date: November 28, 2023
• Est. completion date: January 1, 2027

Study information

• Verified date: March 2024
• Source: University of Wisconsin, Madison
• Contact: Gemma Gliori, MS
• Phone: 608.262.7269
• Email: ggliori[@]uwhealth.org
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

The purpose of this research is to develop an ultrasound (US) based urodynamics (UDS) evaluation of voiding based on successful magnetic resonance imaging (MRI)-UDS evaluation. Both US and MRI are non-invasive imaging techniques, but US is a more cost-effective and widely available technology. 80 participants will be enrolled and will be on study for up to 2.5 hours (1.5 hour MRI and 1 hour US).

Description:

The MRI - UDS technique provides voiding flow rates and bladder pressures which can be used to calculate the widely used metrics of obstruction (bladder outlet obstruction index, BOOI) and contractility (bladder contractility index, BCI). In a preliminary study, values for maximum flow (Qmax) and detrusor pressure at maximum flow (PdetQmax) were obtained from MRI-UDS for patients with BPH/LUTS. These results closely correlated with multichannel urodynamics (MCUD).

Men with BPH/LUTS and age-matched controls will undergo a comprehensive protocol of dynamic MRI, 3D ultrasound and multi-channel urodynamics (MCUD) to evaluate and validate this novel methodology.

Specific aims include:

Aim1. Develop an ultrasound/CFD based urodynamics (US-UDS) method. A protocol combining 3D US imaging and CFD analysis will be developed. This approach will be validated both in vitro and in vivo, first in an anatomically realistic model and then in control human subjects.

Aim2. Establish the accuracy of voiding metrics determined with ultrasound urodynamics (US-UDS). MCUD, MRI-UDS and the new US-UDS protocols will all be performed to evaluate voiding in patients with BPH/LUTS and healthy controls. Urodynamic metrics derived from ultrasound will be compared to those obtained from the reference clinical standard MCUD and MRI-UDS.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 80
• Est. completion date: January 1, 2027
• Est. primary completion date: January 1, 2026
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 18 Years to 80 Years

Eligibility

Inclusion Criteria: Patients with BPH/LUTS

• Age 18-80 years old

• Diagnosed with BPH/LUTS with or without obstruction

Exclusion Criteria:

• Patients with contraindication to MRI and/or GBCA contrast agent.

Inclusion Criteria: Healthy Volunteers

• Age 18-80 years old not experiencing any symptoms consistent with LUTS

Exclusion Criteria:

• Patients with contraindication to MRI and/or GBCA contrast agent.

• History of pelvic surgery or radiation, medications with known effects on the bladder, overt neurologic disease other than diabetic neuropathy, urinary tract infection within the last 4 weeks or urinary retention symptoms.

Related Conditions & MeSH terms

• BPH
• Lower Urinary Tract Symptoms

Intervention

Device:
• MRI-UDS; US-UDS; MCUD
Imaging procedures will include a comprehensive protocol of dynamic MRI, 3D ultrasound and MCUD to evaluate and validate this entirely novel methodology.

Locations

Country	Name	City	State
United States	University of Wisconsin	Madison	Wisconsin

Sponsors (2)

Lead Sponsor	Collaborator
University of Wisconsin, Madison	Wisconsin Partnership Program

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	MRI Urodynamics - Change in Bladder Volume	MRI-based CFD technique (MRI - UDS) provides voiding flow rates and bladder pressures which can be used to calculate the widely used metrics of obstruction (bladder outlet obstruction index, BOOI) and contractility (bladder contractility index, BCI).; Bladder volumes are quantified from the time resolved volumetric data acquired during the void event in each patient.; The outcomes from the MRI based CFD simulations of the voiding event are urine velocity and pressure in the bladder and urethra at the different time points during the void.	Research visit 1 day
Primary	MRI Urodynamics - Change in Urine Velocity	MRI-based CFD technique (MRI - UDS) provides voiding flow rates and bladder pressures which can be used to calculate the widely used metrics of obstruction (bladder outlet obstruction index, BOOI) and contractility (bladder contractility index, BCI). Flow rates are derived from the volume change of the bladder. Volumes are quantified from the time resolved volumetric data acquired during the void in each patient. Calculated flow rate is used to computationally estimate the pressure required to drive that flow using computational fluid dynamics.; In summary, the outcome from the MRI acquisition is bladder volume as well as urethral anatomy during the void event. The outcomes from the MRI based CFD simulations of the voiding event are urine velocity and pressure in the bladder and urethra at the different time points during the void.	Research visit 1 day
Primary	MRI Urodynamics - Change in Pressure	MRI-based CFD technique (MRI - UDS) provides voiding flow rates and bladder pressures which can be used to calculate the widely used metrics of obstruction (bladder outlet obstruction index, BOOI) and contractility (bladder contractility index, BCI). Flow rates are derived from the volume change of the bladder. Volumes are quantified from the time resolved volumetric data acquired during the void in each patient. Calculated flow rate is used to computationally estimate the pressure required to drive that flow using computational fluid dynamics.; In summary, the outcome from the MRI acquisition is bladder volume as well as urethral anatomy during the void event. The outcomes from the MRI based CFD simulations of the voiding event are urine velocity and pressure in the bladder and urethra at the different time points during the void.	Research visit 1 day
Primary	Bladder outlet obstruction index (BOOI)	Bladder outlet obstruction index (BOOI): A metric of obstruction calculated from MRI flow rates and bladder pressures then compared to US values.; BOOI, is derived from the equation PdetQmax - 2Qmax. Scores: <20 means unobstructed, 20-40 means equivocol, >40 means obstructed.	Research visit 1 day
Primary	Bladder contractility index (BOI)	Bladder contractility index (BOI): a metric of bladder contractility calculated from MRI flow rates and bladder pressures then compared to US values.; BOI is derived from the equation PdetQmax + 5Qmax. Scores: <100 means weak, 100-150 menas normal, >150 means strong.	Research visit 1 day
Primary	International Prostate Symptom Score (IPSS)	The IPSS is a validated global questionnaire used to assess the degree of "bother" from benign prostatic hyperplasia symptoms based on the answers to 7 questions concerning urinary symptoms. Each question is assigned points from 0 to 5 indicating increasing severity of the particular symptom. The voiding score is the sum of the responses to 4 questions relating to urination (incomplete emptying, intermittency, weak stream and straining) and ranges from 0 to 20 (asymptomatic to very symptomatic).	Research visit 1 day