• Journal of Chest Surgery
• /
• v.25 no.11
• /
• pp.1273-1277
• /
• 1992

Percutaneous Transluminal Angioplasty[PTA] was introduced by Dotter and JudKins [1964], using coaxial catheters of increasing diameter. The remarkable advances in vascular catheter technology over the past several decades have permitted the development. But the application of the balloon catheters carries with it the risk of arterial injury, thrombosis, embolism, and loss of life or limb. A 53-year-old man was admitted to other hospital due to a intermittent claudication in his right leg for 10 years. and PTA was performed at that hospital. Thereafter he was transferred to our hospital because of coldness, pulselessness, rest pain, ischemic ulcer, and progressing gangrene at the anterior aspect of left lower leg. The left lower extremity was salvaged by left ilio-femoral bypass and later saphenous in situ femoro-popliteal bypass.

• Journal of Chest Surgery
• /
• v.32 no.12
• /
• pp.1127-1130
• /
• 1999

Percutaneous coronary intervention including intracoronary stenting is currently an accepted treatment modality in the treatment of coronary artery disease and is widely performed to treat the patient with multivessel disease with decreased morbidities and less cost compared with conventional coronary rtery bypass grafting(CABG), Repeated interventions due to restenosis even after successful angioplasty are the major disadvantage of the angioplsty especially when the lesion is located inthe left anterior descending artery(LAD) Recently CABG through left anterior small thoracotomy using the left internal thoracic artery to revascularize the LAD territory without cardiopulmonary bypass so called Minimally Invasive Direct Coronary Artery Bypass(MIDCAB) was intrduced and performed with comparable early outcomes. In this regard the integrated approach with percutaneous coronary intervention and minimally invasive direct coronary artery bypass surgery so called 'Hybrid CABG' was suggested to be an effective treatment in suitable patients with multivessel coronary artery disease. We report three cases of Hybrid CABG.

• Proceedings of the Korean Society of Medical Physics Conference
• /
• 2002.09a
• /
• pp.328-330
• /
• 2002

Large balloon angio catheter is used for Percutaneous Transluminal Angioplsty(TPA) of the iliac, femoral and renal arteries as well as after Transjugular Intrahepatic portosystemic shunt(TIPS). The use of angioplasty balloon filled with liquid form of radioisotope reduces the rate of restenosis after PTA. The purpose of this study was to evaluate the absorbed dose to the target vessels from various sized large balloon filled with liquid form of Ho-166-DTPA. Four balloons of balloon dilatation catheters evaluated were 5, 6, 8 and 10 mm in diameter. GafChromic film was used for the estimation of the absorbed dose near the surface of the balloon catheters. Absorbed dose rates are plotted in units of Gy/min/GBq/ml as a function of radial distance in mm from the surface of balloon. The absorbed dose rate was 1.1, 1.6, 2.2 and 2.3 Gy/min/GBq/ml at a balloon surface, 0.3, 0.4, 0.5 and 0.6 Gy/min/GBq/ml at 1 mm depth for various balloon diameter 5, 6, 8 and 10 mm in diameter respectively. The study was conducted to estimate the absorbed doses to the vessels from various sized large balloons filled with liquid form of Ho-166-DTPA for clinical trial of radiation therapy after the PTA. The absorbed dose distribution of Ho-166 appeared to be nearly ideal for vascular irradiation since beta range is very short avoiding unnecessary radiation to surrounding normal tissues.