Surgical Planning

This is a thresholding technique to display all pixels with attenuation values greater than a user-specified HU threshold. Bone, opacified vessels, and calcification will be captured with a threshold of 80-100 HU however, most parenchymal structures will be excluded [77]. SSD is not as useful in acute stroke evaluation, as only pixels on the surface are displayed. This limits evaluation for partially occlusive thrombus. It has been most successfully used for surgical planning, such as for paraclinoid aneurysms. 

Preoperative phase. A surgical plan is developed from a patient-sjjecific model generated from preoperative images and a priori information about human anatomy contained in an anatomical... 

Kurtin A (1953) Corrective surgical planning of skin new technique for treatment of acne scars and other skin defects. AMA Arch Dermtol Syphilol 68 389-397... 

Generating data to create dental or surgical prosthetics, tissue engineered body parts, or for surgical planning. 

Fig. 12.23 Flowchart of the virtual reality surgical planning process [31]...

Vannier MW, Marsh JL, Warren JO (1984) Three dimensional CT reconstruction images for craniofacial surgical planning and evaluation. Radiology 179-184... 

Xia J, Samman N, Yeung RW, Wang D, Shen SG, Ip HH, Tideman H (2000) Computer-assisted three-dimensional surgical planning and simulation. 3D soft tissue planning and prediction. Int J Oral Maxillofac Surg 29 250-258... 

Knowledge of hepatic vascular abnormalities can be crucial for surgical planning in many situations, particularly in the workup of patients who are can-... 

Kamel IR, Kruskal JB, Pomfret EA, Keogan MT, Warmbrand G, Raptopoulos V (2001) Impact of multidetector CT on donor selection and surgical planning before living adult right lobe liver transplantation. AJR Am J Roentgenol 176 193-200... 

Nelson TR, Pretorius DH (1998) Three-dimensional ultrasound imaging. Ultrasound in Med 8c Biol 24 1243-1270 Nghiem HV, Dimas CT, Me Vicar JP et al (1999) Impact of double helical CT and three-dimensional CT arteriography on surgical planning for hepatic transplantation. Abdom Imaging 24 278-284... 

Moreover, MPR can furnish an accurate analysis of the infiltration of the retroperitoneal fat, corresponding to the retroportal resection margin, this another key point ofpre-surgical planning, due to the relationship between fat micro/macro invasion and patient survival (Luttges et al. 1998) (Fig. 21.5). 

The recent development of virtual CT pancreatic evaluation, moreover, opens new exciting fields of application, showing better results than previous techniques and resulting particularly useful, especially for surgical planning. 

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