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Not yet recruitingNCT06309082Updated Oct 29, 2024

Assessing Diabetic Foot Ulcer Microcirculation With High-frequency Contrast Enhanced Ultrasound

An observational study in Diabetes Mellitus, sponsored by First Affiliated Hospital of Wenzhou Medical University. Not yet recruiting at 1 site in China. Per ClinicalTrials.gov, last updated 2024-10-29.

Sponsored by First Affiliated Hospital of Wenzhou Medical University · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
100
Sex
All
01

Study summary

The objective of this observational study is to investigate and validate the utility of high-frame-rate ultrasound imaging technology for dynamic observation of the blood perfusion process at the site of ulcer wounds in real-time, focusing on patients with Diabetic Foot Ulcers (DFU). The primary research questions it seeks to address are as follows:

  • What are the dynamic characteristics of vascular dynamics at the site of ulcer wounds in patients with DFU under high-frame-rate ultrasound imaging?
  • Is High-Frequency Contrast-Enhanced Ultrasound (H-CEUS) technology feasible for effectively visualizing the microcirculation of ulcer wounds in patients with DFU? Participants will Undergo high-frame-rate ultrasound imaging for real-time observation of blood perfusion dynamics at the site of ulcer wounds.

Researchers will compare ulcerated sites with normal sites to see whether the use of High-Frequency Contrast-Enhanced Ultrasound (H-CEUS) has any discernible impact on the visualization of microcirculation in ulcer wounds.

Read the detailed description
  1. Investigate H-CEUS abnormalities in microcirculation at DFU ulcer sites Conduct H-CEUS detection of blood vessels at ulcer sites for each participant. Qualitatively and quantitatively analyze differences in contrast enhancement time, intensity, uniformity, direction, and vessel morphology among different patient groups based on time-intensity curves. Compare H-CEUS indicators between DFU ulcer and normal sites, followed by single-factor and multi-factor logistic regression analysis to identify meaningful imaging indicators for diagnosing DFU and construct an H-CEUS score.
  2. Correlate H-CEUS score with traditional measurement indicators Perform color Doppler ultrasound (CDU), laser Doppler perfusion monitoring (LDPM), and transcutaneous partial pressure of oxygen (TcPO2) measurements at ulcer sites for participants. Analyze the correlation between H-CEUS score and the aforementioned five traditional microcirculation assessment methods. This analysis aims to determine if H-CEUS effectively reflects the degree of ischemia in DFU patients' ulcerated limbs, providing a new, non-invasive assessment tool to assist physicians in accurately assessing ulcer severity and tissue damage, facilitating the formulation of individualized and effective treatment plans.
  3. Construct and evaluate the limb salvage predictive model using H-CEUS Conduct a retrospective analysis of clinical data from hospitalized DFU patients, categorizing them into limb salvage and amputation groups. Compare baseline data, biochemical indicators, and data based on H-CEUS scores between the two groups. Utilize single-factor and multi-factor logistic regression analysis to identify amputation-related risk factors. Subsequently, employ a random forest algorithm to construct a model based on H-CEUS data to predict limb salvage in DFU patients. To further validate the accuracy and clinical utility of this predictive model, nomogram charts and decision curve analysis (DCA) will be created.
02

Conditions studied

  • Diabetes Mellitus

Keywords

  • Diabetic Foot Ulcers
  • High-Frequency Contrast-Enhanced Ultrasound
  • Microcirculation blood supply assessment
  • Amputation
  • Limb salvage
03

In context

Diabetic Foot

1,054 studies on the registry are indexed under Diabetic Foot; 222 are open to participants now.

This study's planned enrollment of 100 is close to the median of 100 across 186 observational studies indexed under Diabetic Foot.

Browse Diabetic Foot studies →

Lead sponsor

First Affiliated Hospital of Wenzhou Medical University is the lead sponsor of 82 studies on the registry; 56 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Diabetes is the second most common chronic disease, following hypertension. Diabetic foot ulcers are a prevalent and severe complication among diabetic patients, resulting from peripheral neuropathy or vascular lesions caused by thickening of the arterial walls and narrowing of the lumen in the lower limbs. This condition can lead to foot infections, ulcers, or deep tissue damage. In the early stages of the disease, patients may not perceive any noticeable changes, experiencing occasional walking pain in the feet. Without proper attention, this can progress to ulcers, difficulty in walking, and even gangrene, causing necrosis of muscles and bone tissues. In severe cases, it may lead to amputation, posing a significant threat to the patient\'s health.

Inclusion criteria

  1. Patients meet the diagnosis criteria for diabetes
  2. They exhibit concurrent peripheral neuropathy and/or lower limb vascular lesions
  3. The feet show varying degrees of infection, ulcers, and/or damage to deep tissues

Exclusion criteria

Exclusion Criteria:

  1. Other causes of inflammatory skin reactions (such as trauma, gout, acute neuropathic arthropathy, fibular fracture, thrombosis, venous congestion)
  2. Exclusion of patients with impaired fasting glucose and abnormal glucose tolerance
  3. Diabetes complicated by stasis dermatitis
  4. Use of medications or substances affecting vascular conditions, such as vasoconstrictors
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
100 participants (estimated)
Target follow-up
3 Years
Patient registry
Yes

Groups and cohorts

  • Diabetic foot ulcer limb salvage group

    The patient was treated without amputation

    Procedure: Debridement

  • Diabetic foot ulcer without limb salvage group

    The treatment option for the patient was amputation

    Procedure: Amputation

Interventions

  • ProcedureAmputation

    Amputation was performed on diabetic foot ulcer

  • ProcedureDebridement

    Debridement of diabetic foot ulcers was performed

06

What researchers measure

Primary outcomes

  1. H-CEUS score

    Establishment of the H-CEUS Score: Single-factor and multi-factor logistic regression analyses will be performed on parameters obtained from H-CEUS. H-CEUS candidate parameters with statistically significant values (p \< 0.05) will be selected. Finally, the diagnostic model's H-CEUS scoring formula will be built using the identified indicators. The H-CEUS score is calculated as follows: H-CEUS Score = val(Parameter1) \* β1 + val(Parameter2) \* β2 + ⋯ + val(Parameter n) \* βn + Intercept Value. Here, "val" represents the CEUS parameter value, and "β" represents the regression coefficient.

    Time frame: baseline, pre-intervention

07

Study locations

1 site
  • the First Affiliated Hospital the First Affiliated Hospital
    Wenzhou, Zhejiang 325006, China
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 29, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06309082
Lead sponsor
First Affiliated Hospital of Wenzhou Medical University
Responsible party
Sponsor
First posted
Mar 13, 2024
Start date
Nov 2024 (estimated)
Primary completion
Dec 2026 (estimated)
Completion
Dec 2026 (estimated)
Last update
Oct 29, 2024

Study contacts

Shihao Xu, doctor
Contact
dcxshvip@wmu.edu.cn
+86 13857766918

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Feb 2024. You cannot join it, but the record below documents what was studied.

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