We report a novel photoacoustic Z-scan (PAZ-scan) technique that combines the advantages offered by the conventional Z-scan method and the sensitivity of the photoacoustic detection. The sample is scanned through the focused laser beam and the generated photoacoustic signal is recorded using a 10 MHz focused ultrasound transducer. Since the signal strength is directly proportional to the optica...

In this paper, we propose a fully automatic method for the coupled 3D localization and segmentation of lower abdomen structures. We apply it to the joint segmentation of the prostate and bladder in a database of CT scans of the lower abdomen of male patients. A flexible approach on the bladder allows the process to easily adapt to high shape variation and to intensity inhomogeneities that would...

X-ray computed tomography is increasingly used in the studies of food structure. This paper describes the perspectives of use of phase contrast computed tomography in studies of heat induced structural changes in meat. From the data it was possible to obtain reconstructed images of the sample structure for visualization and qualitative studies of the sample structure. Further data segmentation ...

Background:Lymphoma is a malignancy that occurs primarily in the lymph nodes. Lymphoma divided into 2 major parts, namely: Non-Hodgkins (LNH) and Hodgkins (LH). About 85% of these malignancies are LNH. Epidemiological studies have found LH rare children under 5 years age relatively adults, but most common cancer among aged 15-19 years. Computed Tomography Scan(CT-Scan) frequently used examinati...

Abstract Background Pericoronary adipose tissue (PCAT) quantified from coronary computed tomography angiography (CCTA) is a new predictor of CT-derived high-risk plaque (HRP) and adverse cardiac events. There has been no report investigating the method to assess PCAT non-contrast CT so far. In this present study, we developed brand-new quantify value electrocardiogram (ECG)-gated (NC-PCAT). Pur...