N # 20 – CT Scan at IMMR : preoperative planning and anatomical insight

CT Scan at IMMR : preoperative planning and anatomical insight

Computed tomography (CT) has been shown to provide crucial information concerning anatomy and pathology in many surgical and medical specialties and is a very useful adjunct in preparing the optimal procedural strategy (which approach, what size of implanted device). CT-based custom-made prostheses are also quite common in orthopedics, reconstructive and oral/maxillofacial surgery.

In cardiology, among the imaging modalities available for the evaluation of patients prior to TAVI or any other structural heart intervention, computed tomography (CT) plays a central role in patient selection. CT reliably visualizes the dimensions of the aortic root, pulmonary veins or left atrium and allows a proper choice of the prosthesis size. In “real patients” the morphology of the access path and relevant comorbidities can also be assessed. In preclinical research, CT preoperative planning allows to find the proper animal model for whichever device is assessed, in particular when there is only one size available!

Further, magnetic resonance imaging, echocardiography, and rotational angiography can surely be used to fabricate life-sized models of anatomy and pathology, as well as patient-specific implants and surgical guides, but computed tomography is the preferred 3D approach with the highest resolution to obtain solid 3D reconstructions such that surgeons and interventionalists can have the operated organ in their hands before the procedure.

As regards preclinical research, adequate preoperative planning enables a better model selection, therefore refining the animal model and following the rules of the 3Rs in accordance with recommendations of ethics committees.

We currently use a 64-slice system. Our images are quite spectacular and they have provided extremely insightful information for many groups. Do not hesitate to ask for more information.

 

Nicolas Borenstein, DVM, PhD
Scientific and technical manager IMMR

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