دورية أكاديمية
Retrospective reconstruction of four-dimensional magnetic resonance from interleaved cine imaging – A comparative study with four-dimensional computed tomography in the lung
| العنوان: | Retrospective reconstruction of four-dimensional magnetic resonance from interleaved cine imaging – A comparative study with four-dimensional computed tomography in the lung |
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| المؤلفون: | Giulia Peteani, Chiara Paganelli, Anna Chiara Giovannelli, Barbara Bachtiary, Sairos Safai, Susanne Rogers, Orso Pusterla, Oliver Riesterer, Damien Charles Weber, Antony John Lomax, Guido Baroni, Giovanni Fattori |
| المصدر: | Physics and Imaging in Radiation Oncology, Vol 29, Iss , Pp 100529- (2024) |
| بيانات النشر: | Elsevier, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Medical physics. Medical radiology. Nuclear medicine LCC:Neoplasms. Tumors. Oncology. Including cancer and carcinogens |
| مصطلحات موضوعية: | 4DMR, Lung cancer, Organ motion, Radiotherapy, Medical physics. Medical radiology. Nuclear medicine, R895-920, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282 |
| الوصف: | Background and purpose: Imaging of respiration-induced anatomical changes is essential to ensure high accuracy in radiotherapy of lung cancer. We expanded here on methods for retrospective reconstruction of time-resolved volumetric magnetic resonance (4DMR) of the thoracic region and benchmarked the results against 4D computed tomography (4DCT). Materials and method: MR data of six lung cancer patients were collected by interleaving cine-navigator images with 2D data frame images, acquired across the thorax. The data frame images have been stacked in volumes based on a similarity metric that considers the anatomical deformation of lungs, while addressing ambiguities in respiratory phase detection and interpolation of missing data. The resulting images were validated against cine-navigator images and compared to paired 4DCTs in terms of amplitude and period of motion, assessing differences in internal target volume (ITV) margin definition. Results: 4DMR-based motion amplitude was on average within 1.8 mm of that measured in the corresponding 2D cine-navigator images. In our dataset, the 4DCT motion and the 4DMR median amplitude were always within 3.8 mm. The median period was generally close to CT references, although deviations up to 24 % have been observed. These changes were reflected in the ITV, which was generally larger for MRI than for 4DCT (up to 39.7 %). Conclusions: The proposed algorithm for retrospective reconstruction of time-resolved volumetric MR provided quality anatomical images with high temporal resolution for motion modelling and treatment planning. The potential for imaging organ motion variability makes 4DMR a valuable complement to standard 4DCT imaging. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2405-6316 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2405631623001203; https://doaj.org/toc/2405-6316 |
| DOI: | 10.1016/j.phro.2023.100529 |
| URL الوصول: | https://doaj.org/article/442dcd156eb642e5af28dc5f1c82236f |
| رقم الأكسشن: | edsdoj.442dcd156eb642e5af28dc5f1c82236f |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 24056316 |
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| DOI: | 10.1016/j.phro.2023.100529 |