Publications by authors named "D Tresoldi"

Article Synopsis
  • A new method was developed to automatically extract a 3D geometric model of the thoracic aorta from 3D cine phase contrast MRI (PCMRI) images.
  • The method involves two steps: using a segmentation algorithm based on Level Set to identify the aorta and creating a 3D model represented by a surface mesh and centerline.
  • Results showed high accuracy in segmentation, with excellent agreement between manual and automatic contours, and consistent 3D models across different datasets, making the method effective for further aortic studies.
View Article and Find Full Text PDF

Peripheral quantitative computed tomography (pQCT) has found new fields of application in bone medicine, but none of them concerns the forensic practice. This study exposes the potential of pQCT applied to a penetrating lesion in a vertebral body. A pQCT scanner was used for the measurements (XCT Research SA+; Stratec Medizintechnik GmbH, Pforzheim, Germany).

View Article and Find Full Text PDF

In this paper, we present the autofocusing system of the imaging instrument to be used on IMAT, a new neutron-imaging facility under construction at the ISIS (UK) target station 2. We have compared 16 different autofocus algorithms to select the one with the best performance. The algorithms have been evaluated by using both a qualitative analysis and a quantitative one.

View Article and Find Full Text PDF

Purpose: To propose and evaluate an anisotropic diffusion filter to improve visualization and analysis of the thoracic aorta local hemodynamics from phase-contrast MRI sensitivity encoding imaging.

Methods: The filter parameters were tailored to the phase-contrast MRI sensitivity encoding data, using a simple calibration procedure. The filter was applied to 20 phase-contrast MR image studies (five subjects acquired with four different sensitivity encoding reduction factors).

View Article and Find Full Text PDF

The structure of skeletal muscle (SM) can be characterized by quantitative (size) and qualitative (composition) attributes, which are disparately reported to be influenced by body adiposity. This study tests the hypothesis that body adiposity exerts a systematic influence on these muscle characteristics and evaluates the possible functional implications for movements. Lower limb SM volume (VSM) and attenuation (ATTSM), an inverse measure of lipid infiltration in muscle, were determined with computed tomography in 21 men (BMI = 21-36 kg m(-2) ; age = 31-71 years.

View Article and Find Full Text PDF