 Good morning everyone, myself, Dr. Nirmala Roy from SMS Medical College, Jaipur, Rajasthan. I thank you, CTBus, for giving this opportunity to present my paper. The topic is incremental role of high-pitched prospective computer tomography in evaluation of pediatric congenital heart diseases and associated abnormalities. The prevalence of congenital heart diseases varies from 6 to 10 per thousand life-worths in India. Ecocardiography is initial imaging modality for assessment of the end diagnosis of CHDs. Three-dimensional imaging is particularly useful in diagnosing diagnostic investigation of complex congenital heart disease and preparation of complex interventional procedures and post-operative assessment of surgical reconstruction. MDCT has faster acquisition and high spatial resolution. It can show morphology of extra cardiac vasculature. National program, Rashtra Bhalswati Karikram also aims at early detection and early intervention of CHDs. The aim of my study was to identify role of prospective ECG-gated computer tomography in diagnosing CHDs with objectives to assess and compare accuracy of CT and trans thoracic ecocardiography in diagnosis of congenital heart diseases and determine sensitivity of CT in diagnosing intracardic malformation and extracardic grade vasculature malformations. It was a prospective type of descriptive study. The tools we used were chest x-ray, eco and prospective ECG-gated cardiac CT. The sample size was of 30 patients of suspected CHD. It was a five-month duration study. Inclusion criteria remained the patients of suspected CHD as diagnosed on eco and 20 patients were included in the study. The exclusion criteria was raised serum creatinine, chemodynamically unstable children and patients of with known allergy to IV contrast media CT protocol was non-contrast ionic agent was injected in peripheral vein at a dose of 122 ml per kg and at a flow rate of 2 to 3 ml per second followed by saline bolus. The results were age distribution, 8 patients fall in age group 6 to 1 to 6 months of age followed by 6 patients in 6 months to 1 year. Major anomalies been encountered were TAPVC in 5 patients out of which 3 had cytosambriquous, top patients were 6, Tungus arterios 1 patient, CCTGA 1 patient, DTEGA 2 patients, double outlet right ventricle 2 patients, double outlet left ventricle 1 patient, co-operational uterine 2 patients and 5 patients had PDA. 16 patients presented with apparent sinosis. Out of 20 patients, 13 were male and 7 were female. Two patients had right isomerism and one patient was each of cytos inverses and left isomerism. 16 had normal cytosolitis. In cardiac cytos, 16 patients had levocardia and 4 patients were dextrocardia. Systemic vein variations, 2 patients had double SVC and 1 had left SVC, 17 were normal. In pulmonary vein, 4 patients had TAPVC and 1 patient PAPVC. In pulmonary artery anomalies, 2 had dilated pulmonary arteries and 9 had erythritic or infernal pulmonary stenosis and aortic arch. 3 patients had right-sided mirror branching, 2 patients had co-operational aorta and 1 patient each was of left-sided aortic arch with evident right subclavian artery and right-sided aortic arch with evident left subclavian artery and 14 had normal. 2 had coronary artery variations, 6 patients had MAPCAS and 5 patients were of PDAs. Study included 20 patients with congenital heart diseases of both sexes. Chest sexes and eco-offee patients were noted for comparison. In our study, maximum number of patients were male, 13 out of 20 and 8 out of 20 were in age group 1 for 6 months. Most cases presented with clinically apparent sinosis, most common symptoms of frequent lung infections and infants and later failure to type and respiratory distress on exertion. Comparison between eco and cardiac CT, cardiac CT was superior to eco and diagnosing cytos, cardiac cytosystemic, vein pulmonary, vein pulmonary artery, aorta, coronary, MAPCAS and PDAs. Cardiac CT was as good as eco in diagnosing BSD, atria, ventricles and atrioventricular connections and ventricular arterial connections. Eco was superior in diagnosing cardiac CT in ASD. Cases, male chair presented with sandwich spell and dyspnea, we can see right perpendicular volume overload and D shaped IV septum and right atrium dilated. Membranous VSD, aorta overriding, narrow, right and left pulmonary artery and incandibular pulmonary stenosis. So this was a classical case of the tetralogy of fallow. Four month old female child presented with pneumonitis ASD, common AV canal, pulmonary artery, pulmonary veins draining into left atria. Then RVOT and LVOT from the left ventricle and left persistent SVC. So this was a case of double outer left ventricle and double SVC. Again, this is a case in which we found co-actation of aorta pre-ductal and relative narrowing of RPA. Then there was a progressive decreasing diameter of descending aorta. Then tubular shaped PDA can be seen and in lower lung fields, we can see ground plastic and consolidation. So this was a case of pre-ductal co-actation of VDA and suspicion of mid aortic syndrome. 18 month old female child presented with retina respiratory infections. We can see large inlet VSD in fundibular pulmonary stenosis and RVOT and LVOT having origin from the right ventricle. Then we can see a small LPA and PDA and dilated aortic annulus. Then this is the PDA and there were multiple MAPCAs. So this was a case of DORV PDA and major mid aortic aorta pulmonary co-actress. 18 month old boy pulmonary veins were prominent. Then there was a common origin of aorta and pulmonary artery tancas. Then a right-sided aortic arch with aberrant left subclavian artery, which traverses behind the esophagus. Common origin of both the cataract arteries and aberrant left subclavian artery. Tancas arch, so this was a case of Tancas artery rosin, right-sided aortic arch with AL-SEF. Common single atrium, then common atrioventricular defect with associated VSD. Then this is the pulmonary atriaesia and origin of aorta from the morphological right ventricle and due to the pulmonary artery. So this was a case of DTG dextro garden complete heavy canal defect. Then a male child presented with sinuses pulmonary veins draining into left atria, which was opening into morphological right ventricle. Pulmonary artery arising from the morphological left ventricle and o-rights the VSD. Then aorta originates from the morphological right ventricle and it is anterior and superior to anterior and left to the pulmonary artery and large membranous VSD. So this was a case of congenital corrected TGA. Two-month old male child, X-ray vacancy, dextrocardia and midline liver and a bilated trifalcate hepateria bronchi, right-sided aortic arch. Then pulmonary veins formed a venous channel and drained into the portal vein. Then dextrocardia and AV septal defect and complete absence of pulmonary arteries. So this was a case of right-sided isomersum with AV septal defect. Four-year old girl child with poor growth. On eco, we could see a left-sided cardiac effects and large VSD in common AV canal. Then both lobes, bilobs, bilateral, biloble lungs and bilateral bifurcated hepateria bronchi. Interruption or interrupted IVC with as I guess continuation into right-sided SVC. Antirefacing sinus gave the origin to RCA and LCX originated from the RCA and posterior phases sinus gave to origin to LMCA. Then left-sided liver and right-sided spleen and all the hepatic veins directly draining. Then the pulmonary veins are drained into a proximal chamber which was separated by a fibromuscular van. This was a classical core triatria. Then common AV canal and VSD and interrupted IVC and hyperplastic pulmonary arteries. So this was a case of left-sided isomersum with other associated findings. And again a 10-year old female child with respiratory distress. We could see a thombus and LPA. Then pulmonary atreasia with PDA. It is a volume image of this case. And posterior phase in sinus gave origin to the single coronary from which the LMCA originated giving rise to LMCA. RCA originated from the LMCA in this volume rendition image. Then spleen on the right side and left side liver and left LVC and SVC and IVC draining into left-sided rectum. So this was a case of sinus inverses with other associated findings. Conclusion. Congenital heart disease are fairly common in India. Maximum number of cases present below one year of age. X-ray and ecocardiography at good initial screening modalities. Cardiac CT angiography provides detail of pulmonary artery and its branches. Presence and absence of major aortic pulmonary collateral arteries. Coronary artery anomalies, aortic arch anomalies, adhesion findings of the lung pentagram and monikage. Cardiac CT angiography is useful in alternative to cardiac catheter angiography especially in pediatrics. Due to its non-invasion as a high sensitivity and specificity, it gives aggravated important information to treating cardiovascular surgeon to plan surgery accordingly. Thank you. These are my references.