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Ultrasound and Fluorescence Optical Imaging Biomarkers for Early Diagnosis and Prediction of Rheumatoid Arthritis.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Ultrasound and Fluorescence Optical Imaging Biomarkers for Early Diagnosis and Prediction of Rheumatoid Arthritis./
作者:
Kisten, Yogan.
面頁冊數:
1 online resource (103 pages)
附註:
Source: Dissertations Abstracts International, Volume: 84-09, Section: B.
Contained By:
Dissertations Abstracts International84-09B.
標題:
Rheumatology. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30346246click for full text (PQDT)
ISBN:
9798374487541
Ultrasound and Fluorescence Optical Imaging Biomarkers for Early Diagnosis and Prediction of Rheumatoid Arthritis.
Kisten, Yogan.
Ultrasound and Fluorescence Optical Imaging Biomarkers for Early Diagnosis and Prediction of Rheumatoid Arthritis.
- 1 online resource (103 pages)
Source: Dissertations Abstracts International, Volume: 84-09, Section: B.
Thesis (Ph.D.)--Karolinska Institutet (Sweden), 2023.
Includes bibliographical references
Prevention of rheumatoid arthritis (RA) is most desirable together with curative treatment which is, however, not yet available. Today, the correct timely diagnosis and early treatment interventions to prevent disease progression remain the best options for our patients. In this thesis, I explore the diagnostic and predictive value of musculoskeletal ultrasound (MSUS) and fluorescence optical imaging (FOI) in identifying biological features on images indicative of existing or emerging joint inflammation (synovitis).In study 1, we tested and compared the diagnostic utility of FOI with clinical examination and musculoskeletal ultrasound (MSUS) to detect active synovitis in 872 joints of 26 patients with different rheumatic diseases (46% early RA). Fluorescence optical imaging proved to be 80% sensitive and 96% specific, having a 77% positive predictive value (PPV) and 97% negative predictive value (NPV) for detecting silent synovitis.In study 2 we showed FOI's ability to quantify digital disease activity (DACT) scores of 1326 joints in 39 early RA patients to be 81% sensitive and 90% specific, with 96% PPV and 61% NPV. These results justify FOI use in clinical practice, to assist the rheumatologist to make an earlier diagnosis with greater confidence. Unsupervised cluster differences emerged for seropositive and seronegative RA patients showing FOI's ability to objectively quantify hand joint inflammation using novel DACT scoring methods.In study 3 we report good association among the two ultrasound semi-quantitative scoring (SQS) methods to that of a novel quantitative scoring (QS) measure of color Doppler pixel counts in 37 established RA patients. Although SQS well correlated with QS to assess active synovitis, the SQS methods lacked visual perceptions of raters to distinguish between grade cut-offs which may help to further revise the criteria used to objectively quantify disease activity.In study 4, we show the value of ultrasound and immune-inflammatory biomarkers in predicting arthritis onset in individuals positive for Anti-CCP with musculoskeletal complaints at risk of RA development. We propose the recognition of a high-risk RA phase characterized by presence of certain ACPA reactivities, IL15-Rα, IL6; and ultrasound detected tenosynovitis, and possibilities to identify (low and high) risk groups for arthritis progression.Overall, our findings on imaging contribute towards a) silent synovitis detection despite negative clinical investigation, b) objective quantitative measures to monitor the effects of RA therapy and c) early identification of certain predictive imaging and biological features/biomarkers that precede arthritis development (tenosynovitis and/or bursitis) in individuals at risk for developing RA, enabling closer monitoring and early diagnosis.
Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023
Mode of access: World Wide Web
ISBN: 9798374487541Subjects--Topical Terms:
894494
Rheumatology.
Index Terms--Genre/Form:
542853
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Ultrasound and Fluorescence Optical Imaging Biomarkers for Early Diagnosis and Prediction of Rheumatoid Arthritis.
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Source: Dissertations Abstracts International, Volume: 84-09, Section: B.
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Prevention of rheumatoid arthritis (RA) is most desirable together with curative treatment which is, however, not yet available. Today, the correct timely diagnosis and early treatment interventions to prevent disease progression remain the best options for our patients. In this thesis, I explore the diagnostic and predictive value of musculoskeletal ultrasound (MSUS) and fluorescence optical imaging (FOI) in identifying biological features on images indicative of existing or emerging joint inflammation (synovitis).In study 1, we tested and compared the diagnostic utility of FOI with clinical examination and musculoskeletal ultrasound (MSUS) to detect active synovitis in 872 joints of 26 patients with different rheumatic diseases (46% early RA). Fluorescence optical imaging proved to be 80% sensitive and 96% specific, having a 77% positive predictive value (PPV) and 97% negative predictive value (NPV) for detecting silent synovitis.In study 2 we showed FOI's ability to quantify digital disease activity (DACT) scores of 1326 joints in 39 early RA patients to be 81% sensitive and 90% specific, with 96% PPV and 61% NPV. These results justify FOI use in clinical practice, to assist the rheumatologist to make an earlier diagnosis with greater confidence. Unsupervised cluster differences emerged for seropositive and seronegative RA patients showing FOI's ability to objectively quantify hand joint inflammation using novel DACT scoring methods.In study 3 we report good association among the two ultrasound semi-quantitative scoring (SQS) methods to that of a novel quantitative scoring (QS) measure of color Doppler pixel counts in 37 established RA patients. Although SQS well correlated with QS to assess active synovitis, the SQS methods lacked visual perceptions of raters to distinguish between grade cut-offs which may help to further revise the criteria used to objectively quantify disease activity.In study 4, we show the value of ultrasound and immune-inflammatory biomarkers in predicting arthritis onset in individuals positive for Anti-CCP with musculoskeletal complaints at risk of RA development. We propose the recognition of a high-risk RA phase characterized by presence of certain ACPA reactivities, IL15-Rα, IL6; and ultrasound detected tenosynovitis, and possibilities to identify (low and high) risk groups for arthritis progression.Overall, our findings on imaging contribute towards a) silent synovitis detection despite negative clinical investigation, b) objective quantitative measures to monitor the effects of RA therapy and c) early identification of certain predictive imaging and biological features/biomarkers that precede arthritis development (tenosynovitis and/or bursitis) in individuals at risk for developing RA, enabling closer monitoring and early diagnosis.
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