1. Articles in category: Clinical Trials

    1-24 of 196 1 2 3 4 5 6 7 8 9 »
    1. Optical Coherence Tomography in Staging Patients With Upper Tract Urothelial Cancer

      Optical Coherence Tomography in Staging Patients With Upper Tract Urothelial Cancer

      This clinical trial studies how well optical coherence tomography works in staging patients with upper-tract urothelial carcinomas. Staging describes the severity of a person's cancer based on the size and/or extent (reach) of the original (primary) tumor and whether or not cancer has spread in the body. It also helps the doctor plan the appropriate treatment. Optical coherence tomography is a procedure that uses infrared light waves to give three-dimensional pictures of structures inside tissues and organs. The pictures are made by a computer linked to the light source. Optical coherence tomography may be effective in staging patients ...

      Read Full Article
    2. Yonsei OCT (Optical Coherence Tomography) Registry for Evaluation of Efficacy and Safety of Coronary Stenting

      Yonsei OCT (Optical Coherence Tomography) Registry for Evaluation of Efficacy and Safety of Coronary Stenting

      Optical coherence tomography (OCT) has been recently studied for evaluation of coronary stenting. Because of high resolutions, several reports have shown that OCT is appropriate for evaluating neointimal tissue after coronary stent implantation. Also, the strut coverage and the characterization of neointimal tissue can be accurately evaluated. Furthermore, OCT-defined coverage of a stent strut was proposed to be related with clinical safety in drug-eluting stents-treated patients. Therefore, we will evaluate the appropriateness of currently using coronary stents (e.g. Sirolimus eluting stent, Paclitaxel-eluting stent, Zotarolimus-eluting stent, Everolimus-eluting stent, Biolimus eluting stent, EPC(endothelial progenitor cell) Capture stent, etc) based on ...

      Read Full Article
    3. Comparison of Biodegradable Stents: Orsiro and BioMatrix

      Comparison of Biodegradable Stents: Orsiro and BioMatrix

      The use of a biodegradable polymer has the potential to reduce the sustained inflammatory response of the arterial wall, facilitating re-endothelialization and minimizing the risk of thrombus formation and late restenosis. In the study, we are going to two biodegradable polymer stents, Orsiro and BioMatrix, especially regarding the stent strut coverage by optical coherence tomography at 3 months after stent implantation. The primary objective of this study is to test the hypothesis that Orsiro is non-inferior to Biomatrix in terms of stent strut coverage by optical coherence tomography at 3 months. The secondary endpoint is clinical outcomes up to 1 ...

      Read Full Article
    4. Non-Invasive Evaluation of Transplant Kidney Using OCT

      Non-Invasive Evaluation of Transplant Kidney Using OCT

      Optical coherence tomography (OCT) is a rapidly emerging imaging modality that can function as a type of "optical biopsy", providing non-invasive cross-sectional images of tissue architectural morphology in situ and in real-time. This proposal will demonstrate that OCT has the ability to provide novel and valuable histopathological information regarding donor kidneys that can be used to predict post-transplant renal function. These investigations will result in a major breakthrough in increasing the number of healthy kidneys available for transplantation by making the most efficient use of available donor kidneys, eliminating the possible use of bad donor kidneys, providing an accurate measure ...

      Read Full Article
    5. Optical Coherence Tomography to Improve Clinical Outcomes During Coronary Angioplasty

      Optical Coherence Tomography to Improve Clinical Outcomes During Coronary Angioplasty

      Coronary artery stenting has evolved as an effective treatment for angina and involves stretching up narrowings within the heart arteries using a balloon (coronary angioplasty) before implanting a small metal scaffold (stent) to splint the artery open. It is imperative that stents are fully expanded when they are deployed. If not, then patients are exposed to the serious risk of a blood clot forming in the stent (stent thrombosis), or the stent renarrowing (restenosis). One fifth of patients experiencing stent thrombosis will die and 70% will suffer a heart attack. Restenosis is associated with recurrent angina and heart attacks. Arguably ...

      Read Full Article
    6. Comparison of the 3-month Strut Coverage After Coronary Stenting by Optical Coherence Tomography; Cilotax and DESyne

      Comparison of the 3-month Strut Coverage After Coronary Stenting by Optical Coherence Tomography; Cilotax and DESyne

      We will compare the stent coverage at 3 months by optical coherence tomography (OCT) between the Cilotax and DESyne drug-eluting stents (DES). The extent of the strut uncoverage has not been evaluated yet for both the Cilotax and DESyne and we first sought to decide the reference intervals using 40 samples (total 44 patients for each group considering 10% drop-out rate) as the pilot study.

      Read Full Article
    7. Optical Coherence Tomography as a Biomarker in Clinical Trials for Ophthalmology and Neurology (Book Chapter)

      Optical Coherence Tomography as a Biomarker in Clinical Trials for Ophthalmology and Neurology (Book Chapter)

      In the past, clinical trials in neuro-ophthalmology have focused upon functional endpoints including Snellen visual acuity and visual field testing, both of which may have significant test/retest variability because of their dependence upon subject alertness and cognitive function. The introduction of optical coherence tomography (OCT) into the practice of clinical ophthalmology has now extended into clinical trials in both ophthalmology and neurology. Recent advances in the resolution and reproducibility of spectral-domain OCT have now produced algorithms that measure the structural integrity of the optic nerve and retina. OCT is in vivo histopathology and the qualitative and quantitative metrics of ...

      Read Full Article
    8. Imaging Lens Deposits in Exfoliation Syndrome

      Imaging Lens Deposits in Exfoliation Syndrome

      The purpose of this study is to use a special eye imaging technique, anterior segment optical coherence tomography (AS-OCT), to image the lens (the curved, transparent part of the eye that helps you to see clearly by directing images of light onto the back of your eye) and note any changes in exfoliation syndrome. Exfoliation syndrome is a common condition that has many ways of showing up in the eye, including the formation of deposits in the eye, shakiness of the lens that can complicate cataract surgery, and a higher chance of developing a type of glaucoma called exfoliation glaucoma ...

      Read Full Article
      Mentions: Duke University
    9. Multicenter Comparison of Early and Late Vascular Responses to Everolimus-eluting Cobalt-CHromium Stent and Platelet AggregatioN Studies In Patients With Stable Angina Managed as Elective Case

      Multicenter Comparison of Early and Late Vascular Responses to Everolimus-eluting Cobalt-CHromium Stent and Platelet AggregatioN Studies In Patients With Stable Angina Managed as Elective Case

      To treat patients with stable coronary artery disease, elective percutaneous coronary intervention (PCI) will be performed with the use of an everolimus-eluting cobalt- chromium stent (everolimus-eluting stent: EES, Xience Prime, Xpedition), which is the current standard drug-eluting stent (DES). Vascular responses at the site of stent placement will be evaluated by optical coherence tomography (OCT) at 1 or 3 months and at 12 months after stent placement, along with observation of changes over time in the target vessel. The relationships between OCT findings and the time course of platelet aggregation and between OCT findings and the occurrence of major cardio- ...

      Read Full Article
    10. Multicenter Randomized Comparison of Early Vascular Responses Between Multicenter Randomized Comparison of Early Vascular Responses Between Everolimus-eluting Cobalt-CHromium Stent ANd Identically DeSigned Bare-Metal Stent in Patients With Acute Myocardia

      Multicenter Randomized Comparison of Early Vascular Responses Between Multicenter Randomized Comparison of Early Vascular Responses Between Everolimus-eluting Cobalt-CHromium Stent ANd Identically DeSigned Bare-Metal Stent in Patients With Acute Myocardia

      To evaluate early vessel response between current standard drug-eluting stent and bare-metal stent in acute myocardial infarction (AMI) patients by optical coherence tomography (OCT).

      Read Full Article
    11. OCT in Retinal Vein Occlusions

      OCT in Retinal Vein Occlusions

      Retinal blood vessel disease encompasses a wide variety of vision-threatening conditions. Of these conditions, retinal vein occlusions are the most common. Vision loss can occur as a result of macular ischemia (loss of blood flow to the macula) or macular edema (fluid build-up at the macula). OCT is an imaging technology that can perform non-contact cross-sectional imaging of retinal and choroidal tissue structures in real time. It is similar to ultrasound imaging, except that OCT measures the intensity of reflected light rather than sound waves. The purpose of this study is to see if non-invasive OCT technology can changes due ...

      Read Full Article
    12. Transform OCT TRiple Assessment of Neointima Stent FOrmation to Reabsorbable polyMer With Optical Coherence Tomography

      Transform OCT TRiple Assessment of Neointima Stent FOrmation to Reabsorbable polyMer With Optical Coherence Tomography

      First prospective randomized controlled study to evaluate in an 'all-comers' population with coronary artery disease whether treatment with a novel everolimus eluting stent (EES) with a biodegradable polymer is superior to a durable polymer zotarolimus eluting stent (ZES), with respect to the long term vascular response to treatment These data are important to ascertain the superiority of a new generation DES with bioabsorbable polymer coating to reduce the long term development of in-stent neoatherosclerosis.

      Read Full Article
      Mentions: Giulio Guagliumi
    13. Proof of Concept Study of Re-treatment in BRVO With Ranibizumab Guided by OCT

      Proof of Concept Study of Re-treatment in BRVO With Ranibizumab Guided by OCT

      The aim of the trial is to evaluate the efficacy and safety of intravitreal injections of ranibizumab for the treatment of macular edema due to BRVO if the re-treatment regimen is guided by morphological macular changes detected by OCT compared to re-treatment according to SmPC defined re-treatment criteria (in case of increase of CRT and concomitant decrease of BCVA).

      Read Full Article
    14. Serial Evaluation of Drug-Eluting Stents Using OCT (STRUT-OCT)

      Serial Evaluation of Drug-Eluting Stents Using OCT (STRUT-OCT)

      The study is proposed as a 48-patient randomized-controlled pilot study that will use Optical Coherence Tomography (OCT) imaging to compare stent strut coverage and malapposition of three second-generation Drug Eluting Stents (DES) [Xience EES (Abbott Vascular, Santa Clara, CA), Resolute Integrity ZES (Medtronic, Minneapolis, MN) and Promus Element EES (Boston Scientific, Natick, MA)] at 6 weeks post implantation. Study Hypothesis is that the rates of stent strut coverage and malapposition of the Xience EES, Promus EES and will be similar to each other and improved (higher rates of stent strut coverage and lower rates of malapposition) compared to the Resolute ...

      Read Full Article
    15. Blood Vessel Patterns in Small Choroidal Tumors

      Blood Vessel Patterns in Small Choroidal Tumors

      The purpose of this study is to see if mapping blood vessel patterns with optical coherence tomography (OCT) will help identify life-threatening choroidal tumors in their early stages and improve overall patient survival through early detection. Uveal melanomas are melanocytic tumors that arise in the pigmented tissues of the eye: the iris, ciliary body, and choroid. Iris melanomas rarely metastasize (spread to other tissues or organs). In contrast, uveal melanomas arising in the ciliary body and choroid are highly malignant (cancerous and invasive to other tissues or organs). Despite having excellent local tumor control rates, uveal melanoma remains a life-threatening ...

      Read Full Article
    16. Vascular Response to Brachytherapy Using Functional OCT

      Vascular Response to Brachytherapy Using Functional OCT

      The purpose of this study is to learn how blood flows to tumors in patients treated with I-125 plaque brachytherapy for uveal melanoma. Despite having excellent local tumor control rates, uveal melanoma remains a life-threatening cancer, and even eye-sparing therapy with radiation treatment often leads to significant loss of vision. Major challenges to providing care to patients with uveal melanoma include the inability to accurately predict long-term vision in an eye treated with radiation, due to a poor understanding of the nature of radiation retinopathy and optic neuropathy. Optical coherence tomography (OCT) is a commonly used ophthalmic imaging modality that ...

      Read Full Article
    17. Rapid Inflation/Deflation Compared With Prolonged High-Pressure Balloon Inflation (INFLATION/DE)

      Rapid Inflation/Deflation Compared With Prolonged High-Pressure Balloon Inflation (INFLATION/DE)

      It is universally accepted that high-pressure balloon inflation is required to most effectively deploy a coronary balloon-expandable stent. However, there is not consensus nor are there any guidelines regarding the method of balloon inflation, particularly the duration of inflation. Underexpansion and strut malapposition after stent deployment are among the most powerful predictors for adverse vessel outcomes. High-pressure inflation for stent deployment is effective to optimally expand the stent, but unlike in vitro testing in air, there are poorly distensible plaque elements that may not instantaneously yield to the balloon pressure. However, these elements may ultimately yield to prolonged inflation. Most ...

      Read Full Article
    18. Evaluation of the Retina of Subjects Without Diabetes Mellitus and Subjects With Diabetes Mellitus Without Diabetic Retinopathy Using Optical Coherence Tomography

      Evaluation of the Retina of Subjects Without Diabetes Mellitus and Subjects With Diabetes Mellitus Without Diabetic Retinopathy Using Optical Coherence Tomography

      The purpose of this study is to evaluate topographic features of the posterior pole of the eye in normal subjects as well as in subjects with diabetes mellitus but without diabetic retinopathy (DR) usingoptical coherence tomography (OCT). The investigators proposal is a novel study to determine retinal volume of normal and diabetic subjects without DR. Specifically, the investigators will establish a standardized reference range for retinal thickness and volume that will provide standards for OCT analysis of different clinical trials for retinal diseases.

      Read Full Article
    19. Relation Among Shear Stress Distribution, Stent Design, and Subsequent Vessel Healing After Drug-eluting Stent Implantation (SHEAR Des)

      Relation Among Shear Stress Distribution, Stent Design, and Subsequent Vessel Healing After Drug-eluting Stent Implantation (SHEAR Des)

      The purpose of this study is to evaluate the differences of wall shear stress distribution among different types of drug-eluting stents and its impact on vessel healing evaluated by intravascular optical coherence tomography evaluation.

      Read Full Article
    20. Reproducibility of Anterior Segment Optical Coherence Tomography (AS-OCT) for Imaging Conjunctivochalasis

      Reproducibility of Anterior Segment Optical Coherence Tomography (AS-OCT) for Imaging Conjunctivochalasis

      Conjunctivochalasis refers to loose redundant, non-edematous inferior conjunctiva that is situated between the globe and lower eyelid, and usually it occurs bilaterally. It has been reported to cause ocular discomfort, tear instability, alteration of tear spreading and subsequently dry eye, which is a common condition that affects vision and quality of life in patients. This condition has also been reported to be associated with aging and ocular surface inflammation. The assessment of conjunctivochalasis was traditionally based on silt lamp examination and this may be cumbersome and highly subjective. Only recently, researchers have advocated the use of imaging and more objective ...

      Read Full Article
    1-24 of 196 1 2 3 4 5 6 7 8 9 »
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources, Velocimetry
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. Popular Articles

  3. Organizations in the News

    1. (1 articles) National Cancer Institute
    2. (1 articles) Yonsei University
  4. People in the News

    1. (1 articles) Myeong-Ki Hong