<prompt> Which aery is disected most frequently following aeriography by femoral route:Celiac trunkSuperior mesenteric aeryInferior mesentric aeryGastroduodenal aery  <response>: C i.e. Inferior mesentric aery Direct catheter aeriography angiography is percutaneous aerial catheterization based on original work of Seldinger in Stockholm, 1953. The most useful and commonly used sites for inseion of catheter into the aerial tree are 1 femoral aery most preferred most common route and 2 axillary aery although most proximal poion of brachial aery is punctured rather than axillary aery, so high brachial is preferred term. The most common vessel punctured for diagnostic and therapeutic angiography is common femoral aery. Retrograde femoral aery puncture is the most common technique used to approch aeries above inguinal ligament such as coronary, carotid etc. Antegrade femoral aery puncture is used when performing ipsilateral superficial femoral, popliteal or infragenicular aery angioplasty. In practice, femoral axillary aeries permit investigation of most areas so other sites like popliteal, lower brachial, radial aery, common carotid, etc are used in special circumstances eg if femoral approach is not possible dt iliac-occlusive disease. In recent years, there has been a trend toward a greater use of upper extremity access even in those individuals with patent femoral vessels because of lower morbidity caused by small caliber catheters and DSA technique enables adequate studies to be obtained by injection through small caliber catheters. Digital substraction angiography DSA, digitally substract manipuletes computer the shadow that are present on plain films from the films taken after contrast injection resulting in an image containing detalis of opacified structures only. Selective catheterization of renal aery, coeliac axis etc is done by fluoroscopic manipulation of special shape catheters like straight flushpigtailcobrasidewinder. Superselective or subselective catheterization is catheterization of small subsidiary aeries that themselves arise from named branch aeries mostly during embolization procedure. A co-axial catheter one that passes through the lumen of a diagnostic or guiding catheter is often used for catheterization of these small vessels. Damage to aerial wall like subintimal stripping leading to dissection occurs during puncture, manipulation and injection of salinelarge volumes of contrast. The decreasing order of aery damaged during femoral route celiac angiography is external iliac aery internal iliac aery inferior mesenteric gastroduodenal celiac trunk superior mesenteric aery. 