Preoperative planning plays a crucial role in modern surgical interventions. Many imaging techniques have been introduced in the past years, allowing clinicians to observe the interior of the body in a non-invasive way. Such possibility has resulted in an improvement of surgical intervention outcomes because of the information acquired thanks to imaging within the pre-operative procedure. Medical imaging introduction has also paved the way to a new approach in surgery, i.e. transcutaneous procedures. Such interventions are performed with the help of catheters which are inserted into the patients through a small incision on their skin. In the cardiovascular field, thanks to transcutaneous procedures it has been possible to perform surgery that would have been otherwise impossible on subjects presenting comorbility. Medical imaging plays another fundamental role in transcutaneous procedures, i.e. guidance. Angiography and fluoroscopy are currently the most widespread techniques for such purpose, but they are limited to two-dimensional rendering. The aim of this work was to investigate the possible use of mixed reality in preoperative planning. We started from a conventional image dataset obtained from computed tomography scan, and we tried to create a three-dimensional triangulated surface suitable for rendering with mixed reality. This surface should be representative of the anatomical features of the cardiovascular system, which can be easily investigated if rendered in three dimensions. Many parameters were considered for the triangulated surface quality assessment, together with the mixed reality smart-glasses performance. A discussion on the benefits and limitations of such approach to preoperative planning closed our dissertation.
Le procedure di planning preoperatorio hanno un ruolo fondamentale nei moderni interventi chirurgici. Negli ultimi anni sono state introdotte molte tecniche di imaging nel campo della medicina, permettendo ai clinici di osservare l’interno del corpo umano in un modo non invasivo. Le informazioni raccolte in sede preoperatoria per mezzo di immagini mediche hanno permesso di migliorare l’esito di molti interventi chirurgici. L’introduzione di queste immagini ha anche aperto la strada a nuove tecniche di intervento note come terapie transcutanee. Questi interventi sono eseguiti per mezzo di un catetere che viene inserito nel paziente tramite una piccola incisione nella pelle. In particolare, nel campo della cardiochirurgia, queste nuove tecniche hanno permesso di svolgere operazioni su pazienti che presentano comorbilità e che non sono adatti ad una classica operazione a cuore aperto, a causa delle complicazioni che potrebbero insorgere. Varie tecniche di imaging sono utilizzate oggi come guida per eseguire tali operazioni. Angiografia e fluoroscopia sono tra le tecniche più utilizzate a questo scopo, ma sono in grado di produrre solo immagini bi-dimensionali. In questo lavoro abbiamo cercato di sopperire a questo limite attraverso l’utilizzo della realtà aumentata. Abbiamo cercato di creare una mesh tri-dimensionale adatta alla realtà aumentata partendo da un dataset convenzionale ottenuto per mezzo di tomografia assiale computerizzata. La superficie ottenuta mira a rappresentare le caratteristiche anatomiche del sistema cardiovascolare, che sono meglio rese in tre dimensioni. È stata effettuata una valutazione sulla qualità della mesh e sulle performance del dispositivo utilizzato per visualizzare la superficie con la realtà aumentata. Concludiamo con una breve discussione sui benefici e le limitazioni di questa tecnologia se impiegata per il planning preoperatorio.
Mixed reality for preoperative planning : a new tool to support clinician decision with anatomical models created from computed tomography scan
MONTI, JACOPO
2017/2018
Abstract
Preoperative planning plays a crucial role in modern surgical interventions. Many imaging techniques have been introduced in the past years, allowing clinicians to observe the interior of the body in a non-invasive way. Such possibility has resulted in an improvement of surgical intervention outcomes because of the information acquired thanks to imaging within the pre-operative procedure. Medical imaging introduction has also paved the way to a new approach in surgery, i.e. transcutaneous procedures. Such interventions are performed with the help of catheters which are inserted into the patients through a small incision on their skin. In the cardiovascular field, thanks to transcutaneous procedures it has been possible to perform surgery that would have been otherwise impossible on subjects presenting comorbility. Medical imaging plays another fundamental role in transcutaneous procedures, i.e. guidance. Angiography and fluoroscopy are currently the most widespread techniques for such purpose, but they are limited to two-dimensional rendering. The aim of this work was to investigate the possible use of mixed reality in preoperative planning. We started from a conventional image dataset obtained from computed tomography scan, and we tried to create a three-dimensional triangulated surface suitable for rendering with mixed reality. This surface should be representative of the anatomical features of the cardiovascular system, which can be easily investigated if rendered in three dimensions. Many parameters were considered for the triangulated surface quality assessment, together with the mixed reality smart-glasses performance. A discussion on the benefits and limitations of such approach to preoperative planning closed our dissertation.File | Dimensione | Formato | |
---|---|---|---|
Thesis.pdf
non accessibile
Descrizione: Testo della tesi
Dimensione
28.58 MB
Formato
Adobe PDF
|
28.58 MB | Adobe PDF | Visualizza/Apri |
I documenti in POLITesi sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/10589/146263