Results 181 to 190 of about 7,264 (221)
Some of the next articles are maybe not open access.
2010
Lasers can be used as intracorporeal lithotriptors for urinary calculi. Laser lithotripsy generally involves one of two mechanisms: photoacoustic or photothermal lithotripsy. Photoacoustic lithotripsy produces large fragments but has difficulty in fragmenting calcium oxalate monohydrate, cystine, and brushite stones.
Andrew J. Marks +4 more
openaire +1 more source
Lasers can be used as intracorporeal lithotriptors for urinary calculi. Laser lithotripsy generally involves one of two mechanisms: photoacoustic or photothermal lithotripsy. Photoacoustic lithotripsy produces large fragments but has difficulty in fragmenting calcium oxalate monohydrate, cystine, and brushite stones.
Andrew J. Marks +4 more
openaire +1 more source
Vapor Channel Oscillations in Laser Lithotripsy
Lasers in Surgery and MedicineABSTRACTObjectivesLaser‐based endoscopic procedures present special challenges to deliver energy for ablation or coagulation of target tissues. When optical fiber–target quasi‐contact (< 0.5 mm distance) cannot be maintained or is undesirable, the creation of intervening vapor bubbles and channels provide for the necessary transmission of laser ...
James J. Childs +6 more
openaire +2 more sources
[Laser lithotripsy with the neodymium YAG laser].
Der Urologe. Ausg. A, 1991Laser-induced shock wave lithotripsy (LISL) with a Q-switched neodymium-YAG laser depends on the generation of a laser-induced breakdown in the fluid surrounding the stone. An oscillating plasma bubble is created, directing shock waves towards the stone. These cavitational effects fragment the calculus into small particles.
R, Hofmann +3 more
openaire +1 more source
[Laser lithotripsy in gastroenterology].
Schweizerische Rundschau fur Medizin Praxis = Revue suisse de medecine Praxis, 1992Almost 90% of all stones in the bile duct can be removed after sphincterotomy and additional mechanical or electrohydraulic lithotripsy. However, a small number of very large or very hard or impacted stones remain, which cannot be removed by conventional endoscopic methods.
openaire +1 more source