- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03411889
A Feasibility Study to Develop a Protocol for Functional Lacrimal Magnetic Resonance Imaging
A Study to Develop a Protocol for Functional Magnetic Resonance Imaging of the Lacrimal Drainage System
Watering eyes (epiphora) is a very common ophthalmic condition. It is frequently caused by dysfunction of the lacrimal (tear) drainage system which is the 'pipework' that takes tears from the eye to the nasal cavity. If the system is completely blocked then the patient is offered surgery to unblock or bypass the obstruction. However, the system is often either partially obstructed, or there is tear drainage delay despite there being no apparent obstruction (functional obstruction). Currently this is investigated with two separate scans, conducted at different times in different departments (CT and nuclear medicine). These are dacryocystography (DCG) and dacryoscintigraphy (DSG) and both are required as they have different limitations and benefits. Moreover DCG is a CT scan that uses radiation.
Functional magnetic resonance dacryocystography (MR DCG) is increasingly widely used in other fields of medicine (e.g. cardiology) because of the increasing acquisition speed and resolution of MRI scanners in recent years. The investigators anticipate functional MRI of the lacrimal drainage system (i.e. scanning as eye drops are instilled and pass down the system) will overcome the shortcomings of DCG and DSG, by simultaneously providing both good anatomical detail and physiological images. Various methods of MR DCG have been described in the literature and there is no standard protocol for this procedure as of current. In this study, the investigators aim to develop a protocol for MR DCG that can be used in routine radiological practice in place of DCG and DSG and get pilot data on tear drainage in participants with known delayed tear drainage and controls with normal tear drainage systems.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Tear drainage delay is a common problem that causes a watery eye. This can impair activities of daily living such as reading and driving, can be a huge nuisance requiring continual dabbing with a tissue and can cause infections and abscesses of the tear drainage system. The current, standard investigations for tear drainage delay have significant limitations with two separate scans in separate departments being required. A functional MRI scan would be able to combine these two scans and provide both better anatomical and functional detail than each one respectively. This would have several major benefits:
- Improved diagnostic information to guide the treatment choice
- Reduced scan resource usage as one scan would provide all the required functional anatomical and functional information.
- Improved patient convenience
- Improved safety as radiation is used for CT DCG, where MRI The study involves investigation of both controls with normal tear drainage and individuals with known tear drainage delay. Both groups are required for the development of the protocol as the speed of tear transit will differ greatly which will facilitate optimisation of the MRI scan protocol. This will also provide preliminary data on the speed of tear passage in a normal lacrimal drainage system and in an impaired system.
Several other functional lacrimal drainage MRI studies have been done. However, a clear protocol has not been developed and there is no data on normal and abnormal MRI appearances and tear transit times.
The normal standard of care will not be delayed by this investigation as it will be conducted while patients are awaiting other lacrimal investigations (DCG and DSG) or lacrimal surgery, none of which would be affected by this study.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
East Sussex
-
Brighton, East Sussex, United Kingdom, BN" 5BE
- Brighton & Sussex University Hospitals
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
Lacrimal drainage disease participants (n=5)
- Symptomatic epiphora (tearing)
Nasolacrimal drainage dysfunction confirmed by the following characteristics:
- An abnormal delay of tear transit on DSG
- A normal DCG and lacrimal syringing investigation
- Normal eyelid and punctal anatomy
Controls
- No epiphora
- Normal lacrimal syringing in clinic.
Exclusion criteria
- Age under 18
- Renal function <30mL/min/1.73m2
- Contra-indications to MRI e.g. electronic or metal implants, severe claustrophobia
- Known adverse reactions to contrast agents
- Pregnancy
Exclusion Criteria:
-
Study Plan
How is the study designed?
Design Details
- Primary Purpose: DIAGNOSTIC
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: functional lacrimal delay
Participants shown to have functional delay on DSG will be included.
The intervention will be an MRI scan during tear drainage
|
MRI scanning during tear drainage
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
A protocol for functional MRI scanning
Time Frame: 60 minutes. This is a feasibility study in which participants are seen on one occasion and have one MRI scan which is expected to take around 60 minutes
|
This is a feasibility study for functional MRI scanning.
The primary outcome is a MRI scanning protocol that can be routinely used to assess the 'real-time' drainage of lacrimal flow
|
60 minutes. This is a feasibility study in which participants are seen on one occasion and have one MRI scan which is expected to take around 60 minutes
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 225255
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Lacrimal Duct Obstruction
-
Tehran University of Medical SciencesUnknownCongenital Nasolacrimal Duct ObstructionIran, Islamic Republic of
-
Rutgers, The State University of New JerseyBausch & Lomb IncorporatedCompletedCongenital Nasolacrimal Duct ObstructionUnited States
-
Cairo UniversityUnknownCongenital Nasolacrimal Duct ObstructionEgypt
-
Menoufia UniversityCompletedPrimary Acquired Nasolacrimal Duct Obstruction
-
Western Galilee Hospital-NahariyaUnknownAcquired Nasolacrimal Duct ObstructionIsrael
-
Cathay General HospitalCompletedCongenital Nasolacrimal Duct ObstructionTaiwan
-
Jaeb Center for Health ResearchNational Eye Institute (NEI)CompletedNasolacrimal Duct ObstructionUnited States
-
University Hospital OstravaCompletedNasolacrimal Duct ObstructionCzech Republic
-
University of British ColumbiaCompletedNasolacrimal Duct ObstructionCanada
-
Instituto de Oftalmología Fundación Conde de ValencianaRecruitingDacryocystorhinostomy | Nasolacrimal Duct ObstructionMexico
Clinical Trials on MRI scanning
-
Assistance Publique Hopitaux De MarseilleCompleted
-
University of PittsburghNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK); Brown... and other collaboratorsRecruitingPediatric Obesity | Binge-Eating DisorderUnited States
-
University of Texas Southwestern Medical CenterCancer Prevention Research Institute of TexasCompletedMalignant Gliomas | Astrocytomas | OligodendrogliomasUnited States
-
AHS Cancer Control AlbertaCompleted
-
The Christie NHS Foundation TrustCompleted
-
Washington University Early Recognition CenterCompleted
-
NHS Greater Glasgow and ClydeUniversity of GlasgowUnknownStroke | Transient Ischaemic Attack
-
University of NottinghamNottingham University Hospitals NHS TrustCompletedHearing Loss | TinnitusUnited Kingdom
-
Memorial Sloan Kettering Cancer CenterCompletedTransitional Cell Carcinoma | Bladder CancerUnited States
-
University of Texas Southwestern Medical CenterNational Cancer Institute (NCI); National Institutes of Health (NIH)CompletedMalignant Gliomas | Astrocytomas | OligodendrogliomasUnited States