The study of the so called “genuine” Bose-Einstein correlations (BEC) of three identical charged pions requires the subtraction of the 2nd order BEC of the pion pairs. The OPAL subtraction method used in the BEC study of the π±π±π± system, which utilised mixed charged pions triplets of the data themselves, is investigated in detail. The derivation of the subtraction formula is explained.

Introduction Soft tissue enhancement is the most important characteristic diagnostic for a renal neoplasm. Postprocessing image subtraction has been used successfully in MR in characterizing and evaluating enhancement of renal lesions. However, image noise is a potential pitfall in MR subtraction imaging. Our objective was to evaluate if there is a threshold signal-to-noise ratio of subtraction...

The purpose of this study was to improve dynamic two-dimensional projection magnetic resonance digital subtraction angiography by using remasking and filtering postprocessing techniques. Four methods were evaluated in 50 patients: default mask subtraction, remasked subtraction, filtering based on the SD, and linear filtering. The results demonstrated that postprocessing techniques such as linea...

DSR has made a significant improvement in the detection of dental & maxillofacial lesions. The Digital Subtraction Radiography is used to compare standardized radiographs taken at sequential examination visits. All unchanged structures are subtracted and these areas are displayed in neutral gray shade in the subtraction image; while regions that have changed are displayed in darker or lighter s...