This paper presents a method for monitoring biological tissue cauterization using the variation in the electromechanical impedance characteristics of the piezothermal heating elements used for tissue ablation. Piezoelectric ultrasonic heaters microfabricated from lead zirconate titanate (PZT) with 200 μm diameter and 100 μm thickness are embedded in a 20-gauge biopsy needle. A modified Butterwo...

Highly advanced optical equipment enables endoscopic surgery to be performed in neurosurgery. We developed an angle-type rigid endoscope having an angled shaft, and has performed endoscope-assisted surgery in neck clipping of 50 cerebral aneurysms. Anatomical study concerning the perforating branch was made through a pterional approach using 3 cadavers. By using endoscope, we can observe the po...

Development of robotic technology has enabled totally endoscopic coronary artery bypass grafting (TECAB) procedures. With complete preservation of sternal and thoracic stability, this operation would be an interesting option for obese patients, who are known to be at higher risk for deep sternal wound infection. We describe a case of successful totally endoscopic left internal mammary artery to...

The aim of the study was to compare three different methods of radial artery harvesting with regard to postoperative complications and perioperative stress of the patient. A total of 60 patients admitted for coronary artery bypass surgery were randomized into three groups. Each patient underwent extraction of radial artery, all performed by a single surgeon. The radial artery was harvested by o...

BACKGROUND Coronary artery bypass grafting using the radial artery has, since the 1990s, gone through a revival. Observational studies have indicated better long-term patency when using radial arteries. Therefore, radial artery might be preferred especially in younger patients where long time patency is important. During the last 10 years different endoscopic techniques to harvest the radial ar...

BACKGROUND This study assessed the neurologic and cosmetic outcome of the endoscopic radial artery harvesting (ERH) technique in coronary artery bypass grafting (CABG). METHODS AND RESULTS The study group comprised 257 consecutive patients who underwent CABG between January 2001 and August 2005 at Kyungpook National University Hospital. The first 157 patients (open group) underwent convention...

OBJECTIVE To describe the technique and evaluate the immediate results of using an ultrasonic scalpel in the skeletonization of the internal thoracic artery for coronary artery bypass grafting surgery. METHODS From January 2000 to October 2006, 188 patients were submitted to coronary artery bypass grafting with the internal thoracic artery skeletonized using an ultrasonic scalpel. Seventy-one...

COMPLICATIONS DEFINITION Benign, biologically progressive, highly vascular, high incidence of persistence and recurrence. 0.5% of all neoplasms of head and neck. Hippocrates described a polyp in the nose which weeped blood. Finally Friedberg in 1940 used the term Angiofibroma. Sphenopalatine foramen (Usually Superior lip of the sphenopalatine foramen at the junction of the Pterygoid Process of ...