CT 3D Reformatting Technique to Aid Microtia Reconstruction Procedure Planning

An aid to accurate planning of alar reconstruction in rhinoplasty.

Accurate placement of intranasal incisions to achieve external alar symmetry is difficult. A detailed anatomical knowledge of intranasal anatomy is required to allow an appropriate incision to be made within the nasal vestibule. By marking the level of the intracartilaginous incision on the external surface using a pair of alice forceps, the marking is subsequently transferred onto the vestibul...

A Sketch Interface to Aid 3D Scene Reconstruction

The “Tour into the Picture” (TIP) system allows a user to work in the two-dimensional space of a single photograph to achieve a three-dimensional reconstruction [5]. This reconstruction models the scene as a box, much like a diorama. The user places the vanishing point and an “inner rectangle” indicating the back wall of the box, along with rectangles indicating foreground objects. To reconstru...

3D-Printed Patient-Specific Models for CT- and MRI-Guided Procedure Planning.

True 3D-CT-reconstruction in comparison to the FDK-algorithm

As has already been shown with 2D-models DIRECTT (Direct iterative reconstruction of computed tomography trajectories) exceeds the spatial resolution of the classical filtered back projection. In this work the DIRECTT algorithm is extended towards cone-beam projection including iterative 3D reconstruction. The improved speed is still overcompensated by the large amount of reconstruction space a...

Characterizing Single Ventricle Patient-Specific Anatomy Using Segmentation of MRI and 3D Reconstruction to Aid Surgical Planning

Single ventricle congenital heart defects occur 2 per every 1000 live births in the USA. In these cases, cyanosis occurs due to the mixing of venous deoxygenated blood and oxygenated blood from the lungs. These defects are surgically treated by the total cavopulmonary connection (TCPC), where the superior and inferior vena cavae are connected to the pulmonary arteries routing the systemic venou...