Automatic tracking of gold seed markers from CBCT image projections in lung and prostate radiotherapy |
| |
| Institution: | 1. Breast Imaging Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian 1, 20133 Milano, Italy;2. Medical Physics Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian 1, 20133 Milano, Italy;3. Unit of Medical Statistics, Biometry and Bioinformatics, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian 1, 20133 Milano, Italy;4. Information and Communication Technology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Via Venezian 1, 20133 Milano, Italy |
| |
| Abstract: | PurposeTo construct a method and software to track gold seed implants in prostate and lung patients undergoing radiotherapy using CBCT image projections.MethodsA mathematical model was developed in the MatLab (Mathworks, Natick, USA) environment which uses a combination of discreet cosine transforms and filtering to enhance several edge detection methods for identifying and tracking gold seed fiducial markers in images obtained from Varian (Varian Medical Systems, Palo Alto, USA) and Elekta (Kungstensgatan, Sweden) CBCT projections.ResultsOrgan motion was captured for 16 prostate patients and 1 lung patient.ConclusionImage enhancement and edge detection is capable of automatically tracking markers for up to 98% (Varian) and 79% (Elekta) of CBCT projections for prostate and lung markers however inclusion of excessive bony anatomy (LT and RT LAT) inhibit the ability of the model to accurate determine marker location. |
| |
| Keywords: | Motion tracking CBCT Image-guided radiation therapy |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
