Publications by authors named "Piergiorgio Marini"
Article Synopsis
- Coronary computed tomography angiography (CCTA) is being optimized to reduce radiation exposure while producing detailed images of coronary arteries.
- Recent technological advancements have led to a significant decrease in the median Dose-Length Product (DLP) values for CCTA at our center, from 1158 mGy·cm to 221 mGy·cm overall.
- The optimization success is attributed to improvements in technology, acquisition techniques, and image reconstruction algorithms, with future goals focused on enhancing image quality through advanced studies.
Purpose: The aim of this methods work is to explore the different behavior of radiomic features resulting by using or not the contrast medium in chest CT imaging of non-small cell lung cancer.
Methods: Chest CT scans, unenhanced and contrast-enhanced, of 17 patients were selected from images collected as part of the staging process. The major T1-T3 lesion was contoured through a semi-automatic approach.
Purpose: This work describes a new form of the calibration curve for radiochromic dosimetry that depends on one fit parameter. Some results are reported to show that the new curve performs as well as those previously used and, more importantly, significantly reduces the dependence on the lot of films, the film orientation on the scanner, and the time after exposure.
Methods: The form of the response curve makes use of the net optical densities ratio against the dose and has been studied by means of the Beer-Lambert law and a simple modeling of the film.
Purpose: To investigate the impact of rectum motion on dose - volume histograms of the rectum including filling and of the wall (DVH and DWH, respectively), during 3D-conformal radiotherapy (3DCRT) for localized prostate cancer.
Materials And Methods: Ten patients received a planning CT scan (CT(0)) and 11-14 CT during 3DCRT for prostate cancer (total CT scans=126). CT images were 3D matched using bony anatomy.