An observational study in Vitiligo and Skin Abnormalities, sponsored by University of Cambridge. Status unknown. Open to participants aged 20 Years to 70 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-09-26.
Sponsored by University of Cambridge · Observational
Photoacoustic imaging (PAI) is an emerging method which combines light and ultrasound to assess the blood content and oxygenation of the body. Light is absorbed by the blood, leading to the generation of ultrasound, from which the levels of oxygen can be derived. This high sensitivity to blood has seen it applied in multiple clinical trials for the assessment of a number of conditions including breast cancer assessment. However, the accuracy of the measurements and image quality is known to decrease as you look deeper into the body because light intensity decreases. Melanin in the skin is known to absorb light very strongly and so there is considerable concern that this may bias measurements made in people with darker skin tones compared to those with lighter skin tones. In this pilot study, we intend to recruit volunteers with a wide range of skin tones and vitiligo. We will scan a number of blood vessels and muscles using PAI and evaluate the photoacoustic measurements of blood content and oxygenation to identify, and ultimately correct for, biases in advance of further clinical studies.
343 studies on the registry are indexed under Vitiligo; 96 are open to participants now.
This study's planned enrollment of 42 is below the median of 114 across 67 observational studies indexed under Vitiligo.
Browse Vitiligo studies →University of Cambridge is the lead sponsor of 116 studies on the registry; 23 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Normal adult population across range of skin tones
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Exclusion Criteria:
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Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Device: Photoacoustic imaging
Device: Photoacoustic imaging
Device: Photoacoustic imaging
Device: Photoacoustic imaging
Device: Photoacoustic imaging
Device: Photoacoustic imaging
Device: Photoacoustic imaging
Photoacoustic imaging
Quantitative photoacoustic imaging
Identify biases in quantitative photoacoustic imaging when scanning people with different Fitzpatrick skin tones and Vitiligo.
Time frame: 1 year
No study locations are listed for this record.
Plan to share: No
No publications or documents are linked to this record.
This study is status unknown, as verified in Sep 2022. You cannot join it, but the record below documents what was studied.
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