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Regional pressure differences between sites within the left ventricular cavity have long been identified, and the potential clinical value of diastolic and systolic intraventricular pressure differences (IVPDs) is of increasing interest. This study concluded that the IVPD plays an important role in ventricular filling and emptying and is a reliable indicator of ventricular relaxation, elastic recoil, diastolic pumping, and effective left ventricular filling. Relative pressure imaging, as a novel and potentially clinically applicable measure of left IVPDs, enables early and more comprehensive identification of the temporal and spatial characteristics of IVPD. In the future, as research related to relative pressure imaging continues, this measurement method has the possibility to become more refined and serve as an additional clinical aid that can replace the gold standard cardiac catheterization technique for the diagnosis of diastolic dysfunction.

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(100)‐oriented GaSb crystalline wafers were implanted by 2 MeV N+ ions with doses from 1 × 1013 to 1 × 1015 cm−2. The radiation damage was characterized by spectroscopic ellipsometry (SE) and Rutherford backscattering spectrometry in combination with channeling (RBS/C). The critical dose between 1 × 1014 and 3 × 1014 cm−2 was determined. The SE data were fitted with the effective medium approximation (EMA) model, and RBS/C data were analyzed by numerical integration. Both give coinciding quantitative knowledge on the radiation damage.