Taşınabilir duşuk maliyetli ultrason görüntüleme sistemi

The use of ultrasound in medicine has increased in the last decade either in diagnostics or in treatments. Ultrasound is safe and easy to use compared to other imaging methods, such as X-ray imaging. Various probes are used to image di erent body parts and internal organs. Probes usually employ a transducer array. Typically these transducer arrays have 64, 96 or 128 elements. While in use, each element of the transducer is driven by a dedicated beam former electronics in transmit an receive. A typical ultrasound system costs somewhere between $100K to $250K. Recently, low cost laptop computer based ultrasound systems have been developed to facilitate the common use of ultrasound devices. The cost reduction is achieved by reducing the channel count. However, even these systems are quite expensive, on the orders of $20K (except a few systems). This high cost limited the wide use of these systems. This thesis aims the design of a mechanically scanned hand-probe for ultrasound imaging with a signi cantly reduced channel count (2-4 array elements). The operator will scan the organ to be imaged by the motion of his/her hand. The probe will consist of the transducer, inertial sensors and the driver electronics. While the probe is swung on the body of the patient, the movement of the probe in the 3D space will be monitored by inertial sensors. Acceleration and rotation data from the inertial sensor will be converted to location data by the use of a positioning algorithm (Quaternion estimator), and this data will then be used for the construction of the ultrasound image. This approach will signi cantly simplify the transducer electronics and, hence, will reduce the system cost.