The patent ductus arteriosus (PDA) is a vascular structure connecting the proximal descending aorta to the roof of the main pulmonary artery, near the origin of the left branch pulmonary artery. Transcatheter closure has become the treatment of choice for most cases of PDA in both children and adults; however, measurement of the exact size and morphology of the shunt in adult cases using only contrast fluoroscopy is difficult. We report on a case of a 49-year-old woman who underwent transcatheter closure of PDA with intravascular ultrasound (IVUS) guideance. In the current case, IVUS is feasible and helpful for measuring the exact size and shape of the PDA.

"Samkwangbyeo" is a new japonica rice variety developed and registered by the rice breeding team of National Institute of Crop Science, RDA in 2003, which was derived from a cross between good quality, high yielding line Suweon361 and a disease resistant line Milyangl01. This variety has about 129 days duration from seeding to heading in central lowland and mid-mountainous areas. It is about 87 cm in culm length and moderately tolerant to lodging. It has also erect pubescent leaf blade and slightly tough culm with good canopy architecture. Samkwangbyeo has the same number of tillers per hill and spikelets per panicle as those of Ilpumbyeo. It shows less sensitivity to premature heading by lately transplanting of 50-day old seedlings. It is slightly less tolerant to cold stress in terms of both heading delay and spikelet fertility than those of Ilpumbyeo. It shows delayed leaf senescence and considerable tolerance to viviparous germination at ripening stage. It shows moderate resistance to leaf blast, bacterial blight, and stripe virus, but susceptibility to insect pests. The milled rice of Samkwangbyeo exhibits translucent, relatively clear non-glutinous endosperm and medium short grain. It has similar amylose content of 18.3% and similar gelatinization temperature, and good palatability of cooked rice compared to Ilpumbyeo. The milled rice yield of Samkwangbyeo is about 5.69 MT/ha at ordinary culture in local adaptability test for three years. Samkwangbyeo would be highly adaptable to central lowland and mid-southern mountainous areas of Korea.

A new single cross waxy corn (Zea mays L.) hybrid, “Jomichal” with white kernel was developed by the Maize Experiment Station (MES), Gangwon-do Agricultural Research and Extension Services (GARES) in 2005. This hybrid, which has early flowering, short-cul

A new single cross waxy corn (Zea mays L.) hybrid, “Mibaek 2” with white kernel was developed by the Maize Experiment Station (MES), Gangwon-do Agricultural Research and Extension Services (GARES) in 2005. This hybrid, which has good eating quality, high

A single cross, Jangdaok, is an yellow dent maize hybrid (Zea mays L.) developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2003. This hybrid, which has a high yield of dry matter, total digestible nutrients (TDN)

Chalok3, a new waxy corn hybrid was developed at the National Crop Experiment Station, RDA in 2001. It is a single cross hybrid, which was crossed between KW35 as a seed parent and KW7 as a pollen parent. Chalok3 was 73 days in days to silking and eight d

Sinchalok, a new waxy corn hybrid was developed from the cross between two inbred lines KW36 as a seed parent and KW1 as a pollen parent at the National Crop Experiment Station, RDA in 2001. Sinchalok was 66 days in days to silking and early maturity hybr

A single cross, Pungmiok is yellow dent hybrid maize (Zea mays L.) developed by the corn breeding team at the National Crop Experiment Station (NCES), RDA in 2002. This hybrid, which has a high yield of dry matter, total digestible nutrients (TDN), is mad

A new single cross hybrid, 'Dumechal', is a white waxy corn (Zea mays L.) developed by the Maize Experiment Station(MES) of Gangwondo Agricultural Research and Extension Services (GARES) in Hongcheon in 1999. 'Dumechal' was made by crossing two inbred lin