- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT01924338
Validation of a Method to Measure Soft Tissue Thickness Using Near Infrared Laser Light
Validierung Der Bestimmung Der Gewebedicke Mit Hilfe Von Licht im Infrarotbereich
The study is intended to verify a newly developed method to measure the thickness of cranial soft tissue. In the study, a high-resolution MRI scan is used as ground truth for a laser scan of the forehead. The laser scan is acquired point by point with a prototype scanning unit developed at the University of Luebeck's Institute for Robotics.
The measured tissue thickness using the near-infrared scanning approach is validated against the ground truth obtained by the MRI scan. The average accuracy of the reconstruction method is then computed over all subjects from the individual study arms.
The required laser intensity and exposure time as well as the achieved measurement accuracy is evaluated with respect to the different skin types of the test subjects. Correlation between these features and the skin type according to the Fitzpatrick scale will be computed.
For 1/3 of the subjects, the laser and MRI scans are repeated after 2 and 8 weeks. The results of the scans are compared and time dependency is analysed.
연구 개요
연구 유형
등록 (예상)
단계
- 해당 없음
연락처 및 위치
연구 장소
-
-
Schleswig-Holstein
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Lübeck, Schleswig-Holstein, 독일, 23562
- 모집하지 않고 적극적으로
- Clinic for Maxillofacial Surgery of the University Hospital Schleswig-Holstein
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Lübeck, Schleswig-Holstein, 독일, 23562
- 모병
- University of Luebeck, Institute for Robotics
-
연락하다:
- Floris Ernst, PhD
- 전화번호: +494515005208
- 이메일: ernst@rob.uni-luebeck.de
-
수석 연구원:
- Floris Ernst, PhD
-
-
참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion Criteria:
- male and female adults
- variations in skin type (at least 10 subjects with skin types I & II, at least 2 subjects with skin type III, at least 3 subjects with skin type IV, at least 3 subjects with skin types V & VI)
- optional: availability of high-resolution CT or CBCT (cone-beam CT) scan of the forehead
Exclusion Criteria:
- allergies or intolerances against ABS (acrylonitrile butadiene styrene), PMMA (polymethyl methacrylate) or alginate
- elevated light sensitivity of the skin
- exclusion criteria for MRI (claustrophobia, motoric disorders, tattoos, body piercings, metallic implants in the skull, epilepsy, cardiac pacemakers)
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 기초 과학
- 할당: 무작위화되지 않음
- 중재 모델: 단일 그룹 할당
- 마스킹: 없음(오픈 라벨)
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
|
실험적: Skin types I and II
Volunteers classified as skin types I and II according to the Fitzpatrick Scale Procedures: dental cast creation, MRI scan, laser scan |
Acquisition of a high-resolution MRI scan (0.15 x 0.15 x 1.0 mm³) aligned with the AC-PC (anterior commissure-posterior commissure) line
A near-infrared laser scan of the subject's forehead is acquired
A dental cast made of PMMA (polymethyl methacrylate) of the subject's maxilla is created
|
|
실험적: Skin type III
Volunteers classified as skin type III according to the Fitzpatrick Scale Procedures: dental cast creation, MRI scan, laser scan |
Acquisition of a high-resolution MRI scan (0.15 x 0.15 x 1.0 mm³) aligned with the AC-PC (anterior commissure-posterior commissure) line
A near-infrared laser scan of the subject's forehead is acquired
A dental cast made of PMMA (polymethyl methacrylate) of the subject's maxilla is created
|
|
실험적: Skin type IV
Volunteers classified as skin type IV according to the Fitzpatrick Scale Procedures: dental cast creation, MRI scan, laser scan |
Acquisition of a high-resolution MRI scan (0.15 x 0.15 x 1.0 mm³) aligned with the AC-PC (anterior commissure-posterior commissure) line
A near-infrared laser scan of the subject's forehead is acquired
A dental cast made of PMMA (polymethyl methacrylate) of the subject's maxilla is created
|
|
실험적: Skin types V and VI
Volunteers classified as skin types V and VI according to the Fitzpatrick Scale Procedures: dental cast creation, MRI scan, laser scan |
Acquisition of a high-resolution MRI scan (0.15 x 0.15 x 1.0 mm³) aligned with the AC-PC (anterior commissure-posterior commissure) line
A near-infrared laser scan of the subject's forehead is acquired
A dental cast made of PMMA (polymethyl methacrylate) of the subject's maxilla is created
|
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
기간 |
|---|---|
|
Average accuracy of tissue thickness measurement method [mm]
기간: up to 6 months
|
up to 6 months
|
2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
System dependency on skin color - required intensity
기간: up to 6 months
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Correlation between skin types (according to the Fitzpatrick scale) and the outcome (required laser intensity [mW])
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up to 6 months
|
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Long-term stability of measured features - accuracy
기간: up to 8 months
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Change in measurement accuracy [mm]
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up to 8 months
|
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Long-term stability of measured features - required intensity
기간: up to 8 months
|
Change in required laser intensity [mW]
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up to 8 months
|
|
Long-term stability of measured features - required exposure time
기간: up to 8 months
|
Change in required exposure time [ms]
|
up to 8 months
|
|
System dependency on skin color - accuracy
기간: up to 6 months
|
Correlation between skin types (according to the Fitzpatrick scale) and the outcome (accuracy of tissue thickness measurement [mm])
|
up to 6 months
|
|
System dependency on skin color - exposure time
기간: up to 6 months
|
Correlation between skin types (according to the Fitzpatrick scale) and the outcome (required exposure time [ms])
|
up to 6 months
|
공동 작업자 및 조사자
스폰서
수사관
- 수석 연구원: Floris Ernst, PhD, University of Luebeck
간행물 및 유용한 링크
유용한 링크
연구 기록 날짜
연구 주요 날짜
연구 시작
기본 완료 (예상)
연구 완료 (예상)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (추정)
연구 기록 업데이트
마지막 업데이트 게시됨 (추정)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
기타 연구 ID 번호
- ROB-NIRMR-001
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .
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