Mapping angiography

Sarmento-Leite R, Silva GV, Dohman HF, Rocha RM, Dohman HJ, de Mattos ND, Carvalho LA, Gottechall CA, Perin EC. Comparison of left ventricular electromechanical mapping and left ventricular angiography defining practical standards for analysis of NOGA maps. Tex Heart Inst /2003 30 19-26. 

Treatment planning requires a multi-disciplinary team with clear leadership and accountability to ensure that the screening, diagnostic and treatment procedures are conducted in a seamless fashion. The essential steps include (1) calculation of target liver mass to be infused and tumor burden (2) visceral angiography to map out tumor-perfusing vessels and embolize collaterals (3) assessment of pulmonary shunt (4) determination of the optimal therapeutic dose (5) room preparation (6) radiation monitoring and safety procedures (6) calculation of residual activity and efficiency of delivery. 

Even if very useful in loco-regional tumoral staging, MPR obviously cannot give volumetric evaluation of structures generally, MIP and VR are the preferred algorithms to create vascular maps, and especially VR has shown the potential for replacing angiography. 

In summary, dual-energy CT offers the possibility to exploit spectral information for diagnostic purposes in routine chnical examinations. The mapping of iodine distribution in the lung, liver or kidneys and the bone removal from angiography datasets can be regarded as very promising applications. The differentiation of kidney stones represents another clinically useful implementation. 

Chow LC, Napoli A, Klein MB, Chang J, Rubin GD (2005) Vascular mapping of the leg with multi-detector row CT angiography prior to free-flap transplantation. Radiology... 

Visualization of the preintervention road map, e.g. based on CT angiography (CTA) or magnetic resonance angiography (MRA)... 

---