Chronic Venous DiseaseNCT06834555
Mobile Phone Thermal Imaging Assessment of Incompetent Perforator Veins
A study testing Mobile phone thermal imaging in people with Chronic Venous Disease, run by Guangdong Second Provincial General Hospital.
Trial summary
Chronic venous disease is a common disease of the lower limbs. Severe CVD can lead to lower limb swelling, pigmentation, and repeated skin ulceration, which seriously affects patients' quality of life. About 10.5% to 92.7% of CVD patients with recurrent varicose veins had insufficient perforating veins. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Chronic Venous Disease
- What is being tested?
- Mobile phone thermal imaging
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 100 participants
- Where
- No sites listed yet
- Study dates
- 1 Mar 2025to 1 Dec 2025
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- A diagnosis of CVD by vascular surgeon, classified C0 to C6 according to CEAP (Clinical-Etiology - Anatomy - Pathophysiology) No history of lower extremity surgery The body mass index (BMI) is 18 to 35 kg/m2
Who cannot join
- deep vein thrombosis heart disease peripheral artery disease chronic liver disease chronic kidney disease pregnancy severe obesity (BMI ≥35 kg/m2)
About this study
Official title: Can Mobile Phone Thermal Imaging Provide an Ambulatory Assessment of Incompetent Perforator Veins?
Chronic venous disease is a common disease of the lower limbs. Severe CVD can lead to lower limb swelling, pigmentation, and repeated skin ulceration, which seriously affects patients' quality of life. About 10.5% to 92.7% of CVD patients with recurrent varicose veins had insufficient perforating veins. Treatment of these IPVs can promote venous ulcer healing and reduce the recurrence rate of venous ulcers. Accurate assessment and positioning of insufficient perforating veins in the lower leg is a key step in developing a personalized treatment strategy. At present, Color Doppler ultrasonography performed in the upright position in combination with the Valsalva maneuver or local pressure of the limb is regarded as the "gold standard" for the diagnosis of perforating veins insufficiency. However, in China, a large number of perforating veins insufficiency are diagnosed by venography. Because the majority of Chinese vascular surgeons are not versatile in vascular ultrasound examination and venous ultrasound protocols vary from institution to institution. A non-functioning valve in an insufficient perforated vein allows blood to flow retrograde from a deep vein to a superficial vein. Some researchers have shown that the venous blood temperature of deep veins is higher than that of superficial veins. Thus, the retrograde flow of "warm blood" from the deep vein to the superficial vein increases the skin temperature located on the insufficient perforated vein. This study tested the feasibility of a smartphone and its compatible portable thermal imaging device as a tool for assessing insufficient perforated vein. The objective is to study the sensitivity and specificity of smartphone thermal imaging in diagnosing and locating the insufficient perforated vein in CVD patients.
- Conditions
- Chronic Venous Disease
- Being tested
- Mobile phone thermal imaging
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Mobile phone thermal imagingDiagnostic test
The patient was supine, and the lower limb was naturally relaxed on a 20cm high stent to drain blood from the vein. The leg temperature was lowered with a cold towel at 2-6 ° C for five minutes. A tourniquet was applied to the upper 1/3 of the thigh and the level of the fibula of the lower leg with enough pressure to block the great saphenous vein and the small saphenous vein. The patient is then asked to stand. The smart phone and the supporting thermal imaging system were used to conduct continuous real-time imaging and take photos of the front, bilateral and rear of the thigh and lower leg. The hot spot of "rapid rewarming" of the lower limb was marked with a marker.
| Study group | Role | What they receive |
|---|---|---|
| insufficient perforated veins in CVD patients | Experimental | The patient was supine, and the lower limb was naturally relaxed on a 20cm high stent to drain blood from the vein. The leg temperature was lowered with a cold towel at 2-6 ° C for five minutes. A tourniquet was applied to the upper 1/3 of the thigh and the level of the fibula of the lower leg with enough pressure to block the great saphenous vein and the small saphenous vein. The patient is then asked to stand. The smart phone and the supporting thermal imaging system were used to conduct continuous real-time imaging and take photos of the front, bilateral and rear of the thigh and lower leg. The hot spot of "rapid rewarming" of the lower limb was marked with a marker. Receives: Diagnostic Test: Mobile phone thermal imaging |
What is being measured
The primary outcome is the main question the study is designed to answer.
sensitivity and specificity of smartphone thermal imaging in diagnosing and locating the insufficient perforated vein in CVD patients
Measured: 10 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Feb 2025
- Study start1 Mar 2025 (estimated)
- Primary completion1 Dec 2025 (estimated)
- Study completion1 Dec 2025 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Chronic Venous DiseaseStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Guangdong Second Provincial General Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hao Liu, Guangdong Second Provincial General Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06834555
- Sponsor's protocol ID
- 2024-KY-KZ-432
- Status last verified
- Feb 2025
- First submitted
- 8 Feb 2025
- Last updated
- 19 Feb 2025
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 19 Feb 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Can Mobile Phone Thermal Imaging Provide an Ambulatory Assessment of Incompetent Perforator Veins?
- ClinicalTrials.gov ID
- NCT06834555
- Acronym / sponsor ID
- 2024-KY-KZ-432
- Conditions
- Chronic Venous Disease
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Guangdong Second Provincial General HospitalUniversity, hospital or other
- Study start
- 1 Mar 2025 (estimated)
- Primary completion
- 1 Dec 2025 (estimated)
- Study completion
- 1 Dec 2025 (estimated)
- First posted
- 19 Feb 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Chronic venous disease is a common disease of the lower limbs. Severe CVD can lead to lower limb swelling, pigmentation, and repeated skin ulceration, which seriously affects patients' quality of life. About 10.5% to 92.7% of CVD patients with recurrent varicose veins had insufficient perforating veins. Treatment of these IPVs can promote venous ulcer healing and reduce the recurrence rate of venous ulcers. Accurate assessment and positioning of insufficient perforating veins in the lower leg is a key step in developing a personalized treatment strategy. At present, Color Doppler ultrasonography performed in the upright position in combination with the Valsalva maneuver or local pressure of the limb is regarded as the "gold standard" for the diagnosis of perforating veins insufficiency. However, in China, a large number of perforating veins insufficiency are diagnosed by venography. Because the majority of Chinese vascular surgeons are not versatile in vascular ultrasound examination and venous ultrasound protocols vary from institution to institution. A non-functioning valve in an insufficient perforated vein allows blood to flow retrograde from a deep vein to a superficial vein. Some researchers have shown that the venous blood temperature of deep veins is higher than that of superficial veins. Thus, the retrograde flow of "warm blood" from the deep vein to the superficial vein increases the skin temperature located on the insufficient perforated vein. This study tested the feasibility of a smartphone and its compatible portable thermal imaging device as a tool for assessing insufficient perforated vein. The objective is to study the sensitivity and specificity of smartphone thermal imaging in diagnosing and locating the insufficient perforated vein in CVD patients.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| insufficient perforated veins in CVD patients | Experimental | Diagnostic Test: Mobile phone thermal imagingThe patient was supine, and the lower limb was naturally relaxed on a 20cm high stent to drain blood from the vein. The leg temperature was lowered with a cold towel at 2-6 ° C for five minutes. A tourniquet was applied to the upper 1/3 of the thigh and the level of the fibula of the lower leg with enough pressure to block the great saphenous vein and the small saphenous vein. The patient is then asked to stand. The smart phone and the supporting thermal imaging system were used to conduct continuous real-time imaging and take photos of the front, bilateral and rear of the thigh and lower leg. The hot spot of "rapid rewarming" of the lower limb was marked with a marker. |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (1 listed)
- A diagnosis of CVD by vascular surgeon, classified C0 to C6 according to CEAP (Clinical-Etiology - Anatomy - Pathophysiology) No history of lower extremity surgery The body mass index (BMI) is 18 to 35 kg/m2
Key exclusion criteria (1 listed)
- deep vein thrombosis heart disease peripheral artery disease chronic liver disease chronic kidney disease pregnancy severe obesity (BMI ≥35 kg/m2)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Mobile phone thermal imagingThe patient was supine, and the lower limb was naturally relaxed on a 20cm high stent to drain blood from the vein. The leg temperature was lowered with a cold towel at 2-6 ° C for five minutes. A tourniquet was applied to the upper 1/3 of the thigh and the level of the fibula of the lower leg with enough pressure to block the great saphenous vein and the small saphenous vein. The patient is then asked to stand. The smart phone and the supporting thermal imaging system were used to conduct continuous real-time imaging and take photos of the front, bilateral and rear of the thigh and lower leg. The hot spot of "rapid rewarming" of the lower limb was marked with a marker. | Diagnostic test | insufficient perforated veins in CVD patients |
Primary outcome
sensitivity and specificity of smartphone thermal imaging in diagnosing and locating the insufficient perforated vein in CVD patients
Time frame: 10 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Feb 2025.
- Individual participant dataSharing planned: No
Related trials for Chronic Venous Disease
Recruiting
PAW-Hydrogel for Chronic Wound Healing
Diabetic Foot Ulcer (DFU), Pressure Ulcer (PU)
RecruitingPhase 4
Foam Sclerotherapy With or Without Transdermal Laser for Reticular Veins and Telangiectasias
Telangiectasias, Reticular Veins
Recruiting
Efficacy and Safety of ZKARE® Gel and Its Accessory ZKAPI® in the Treatment of Chronic Ulcers.
Chronic Ulcers
Not yet recruiting
Phenotyping Rehabilitation for Improving Frailty, Functional Capacity
Varicose Veins
Active, not recruitingPhase 1/2
A Study to Evaluate AZD7760 Safety and Pharmacokinetics in Healthy Adults (Phase I) and Adults With End-stage Kidney Disease on Hemodialysis With a Central Venous Catheter (Phase IIa)
Staphylococcus Aureus
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A study testing Mobile phone thermal imaging in people with Chronic Venous Disease, run by Guangdong Second Provincial General Hospital.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 19 Feb 2025. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
sensitivity and specificity of smartphone thermal imaging in diagnosing and locating the insufficient perforated vein in CVD patients (time frame: 10 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Feb 2025.