Fig A1. Dynamic defocusing. Moving a lamp in a concave pattern. Captured with a 30 sec camera exposure. Reflected on a canvas
Fig A2. Dynamic focusing. Moving a lamp in a convex pattern.Captured with a 30 sec camera exposure
Fig A3. No dynamic defocusing. Moving a lamp in a linear pattern keeping the light beam in one direction at all times. 30 sec photo exposure.
Fig A4. Dynamic focusing. Computer simulation of a convex application.
Fig A5. Dynamic focusing (same as A4). Exposure time variation from across the diameter of the exposed "limb" model.
Fig B1. Simulation of energy distribution across a plane skin surface.
Fig B2. Simulation of energy distribution. Circular "beam" shape and concentric "beam" intensity.
Fig B3. Simulation of energy distribution. Circular "beam" shape and random "beam" intensity.
Fig B4. Simulation of energy distribution. Idealized square "beam" shape and even "beam" intensity.
Fig B5. Simulation of energy distribution. Random beam shape and intensity.
Moving a lamp from side to side like a pendulum hinged in the rear end of the lamp causing the light bulb to point and radiate away from a common centre behind the bulb.
Moving a lamp from side to side causing the light bulb to point and radiate towards a common centre in front of the bulb, at the lower edge of the picture.
Moving a lamp from side to side in a straight position without tilting the lamp, causes the light to point in parallel directions with no focus.
Compare light Photo #2. A long rectangle representing a uniform ultrasound beam is rotated around a "limb centre" simulating exposure to a convex surface. The accumulated exposure time pattern is demonstrated in this figure. The distribution is caused solely by the dynamic focusing. See next photo.
Does the moving transducer technique secure an even distribution of energy?: The accumulated energy distribution across a computer screen was captured with a long time camera exposure. The energy source was a moving light beam configured as indicated by the numbered pattern to the bottom right. Cf. fig. B1-5.
Does the moving transducer technique secure an even distribution of energy?: Simulated energy distribution across the skin surface during the entire treatment with a circular "beam" shape and concentric beam intensity.
Does the moving transducer technique secure an even distribution of energy?: Simulated energy distribution across the skin surface during the entire treatment with a circular "beam" shape and random beam intensity.
Does the moving transducer technique secure an even distribution of energy?: Simulated energy distribution across the skin surface during the entire treatment with a constructed "beam" of square shape and even beam intensity.
Does the moving transducer technique secure an even distribution of energy?: Simulated energy distribution across the skin surface during the entire treatment with a beam of random shape and beam intensity.
