Results 31 to 40 of about 1,928 (197)

Full‐Color Metaoptical Imaging in Visible Light

Advanced Photonics Research, Volume 3, Issue 5, May 2022., 2022
Meta‐optics has emerged as an attractive platform for miniaturizing imaging systems. Despite progress, the meta‐optical imaging systems suffer from strong chromatic aberrations. Herein, the challenges, progress, and opportunities on full‐color imaging using the visible light using meta‐optics are reviewed.
Luocheng Huang, Shane Colburn, Alan Zhan, Arka Majumdar   +3 more
wiley   +1 more source

Coronary angioscopy of abrupt occlusion after angioplasty [PDF]

, 1995
Objectives. This study used angioscopy to determine the specific cause of vessel occlusion after percutaneous transluminal coronary angioplasty and compared the angiographic and angioscopic lesion morphologies in this setting.Background.
Escobar, Alvaro, Suresh P. Jain, Jain, S. P., Escobar, A., Jain, Suresh P., White, Christopher J., Tyrone J. Collins, Collins, T. J., Stephen R. Ramee, Ramee, Stephen R., Christopher J. White, Alvaro Escobar, Collins, Tyrone J.   +12 more
core   +1 more source

Embolic Stroke Caused by Aortic Ruptured Plaque and Thrombus Visualized by Angioscopy

JACC: Case Reports, 2020
Aortogenic embolization is among the major mechanisms of cryptogenic stroke. Angioscopic surveillance of the aortic wall clearly visualized the existence of thrombi and spontaneously ruptured plaques, which dynamically liberated embolic materials. (Level
Yoshiharu Higuchi, MD, Atsushi Hirayama, MD, Sei Komatsu, MD, Kazuhisa Kodama, MD   +3 more
doaj   +1 more source

Evaluation of flushing parameters for clear view vascular endoscopy

Current Directions in Biomedical Engineering, 2023
Vascular diseases like aneurysms or atherosclerosis belong to the leading causes of death. For diagnosis and treatment, medical imaging is essential. Standard imaging methods are Ultrasound, X-ray-based Angiography, Computed tomography or Magnet Resonant
Böckmann Julian, Klebingat Stefan, Schwab Roland, Behme Daniel, Boese Axel   +4 more
doaj   +1 more source

934-29 Coronary Angioscopy Safety Survey: European Multicenter Experience [PDF]

, 1995
Percutaneous coronary angioscopy (CA) which allows direct visualization of the interior of the coronary arteries has potentially widespread application in research and as an adjunct to coronary interventional procedures.
Lablanche, Jean Marc, Geschwind, Herbert, Hejjer, Peter Den, Hopp, H.W., Jeagere, Peter De, Cribier, Alain   +5 more
core   +1 more source

Catheter pose-dependent virtual angioscopy images for endovascular aortic repair: validation with a video graphics array (VGA) camera

Current Directions in Biomedical Engineering, 2020
Previous research reported catheter pose-dependent virtual angioscopy images for endovascular aortic repair (EVAR) (phantom studies) without any validation with video images.
García-Vázquez Verónica, Matysiak Florian, Jäckle Sonja, Eixmann Tim, Sieren Malte Maria, von Haxthausen Felix, Ernst Floris   +6 more
doaj   +1 more source

False lumen thrombus following aortic dissection diagnosed as the source of repeat lower extremity emboli with angioscopy: a case report

Surgical Case Reports, 2022
Background Acute arterial embolization caused by a free-floating thrombus of the false lumen after surgery for acute aortic dissection is a rare complication; hence, determining its cause may be difficult.
Riha Shimizu, Makoto Sumi, Yuri Murakami, Takao Ohki   +3 more
doaj   +1 more source

Percutaneous angioscopy of saphenous vein coronary bypass grafts [PDF]

, 1993
Objectives. We compared the results of percutaneous angioscopy and angiography for detecting critical elements of surface lesion morphology in 21 patients undergoing balloon angioplasty of saphenous vein coronary bypass grafts.Background.
Mesa, Juan E., White, Christopher J., Collins, Tyrone J., Jain, Ashit, Ramee, Stephen R.   +4 more
core   +1 more source

Calcified Nodules in the Superficial Femoral Artery Confirmed by Intravascular Ultrasound, Angioscopy, and Histology

JACC: Case Reports, 2020
An 84-year-old man was admitted to the authors’ hospital for the treatment of intermittent claudication. Angiography revealed an exophytic calcified nodules in the distal superficial femoral artery.
Kota Tanaka, MD, Hiroyuki Nagai, MD, Atsunori Okamura, MD, Mutsumi Iwamoto, MD, Satoshi Watanabe, MD, Akinori Sumiyoshi, MD, Satoshi Suzuki, MD, Hirokazu Tanaka, MD, Koichi Inoue, MD, Yasushi Koyama, MD, Katsuomi Iwakura, MD, Kenshi Fujii, MD   +11 more
doaj   +1 more source

Coronary angioscopy during cardiac catheterization [PDF]

, 1985
Coronary angioscopy should permit direct inspection of the luminal cross section and identification of disease. The feasibility of introducing a 5F Olympus Ultrathin fiberscope into the obstructed right coronary artery in five patients after routine ...
H. John Marais, Spokojny, Artur M., J. Richard Spears, Artur M. Spokojny, Spears, J. Richard, Marais, H. John   +5 more
core   +1 more source