Final answer:
One and one-half-dimensional array transducers provide the greatest benefit in terms of improved slice thickness resolution (option c), enabling more detailed three-dimensional reconstructions similar to those obtained by CT scans. They enhance diagnostic imaging by providing high-resolution details necessary for accurate diagnoses.
Step-by-step explanation:
The greatest advantage of one-and-one-half dimensional array transducers is improved slice thickness resolution. These transducers offer more sophisticated imaging capabilities than traditional 2D images provided by standard X-rays. With the ability to capture data over a series of slices, one-half-dimensional array transducers can construct a more detailed and accurate three-dimensional reconstruction of the scanned area. The technique resembles computed tomography (CT) scans, where multiple slices can be analyzed to enhance specific types of tissue and provide three-dimensional information. This technology has greatly advanced the field of diagnostic imaging, leading to better diagnoses and treatment plans.
Regarding diagnostic ultrasound scanners, the difference in echo times for tissues located 3.50 and 3.60 cm beneath the surface is critical for the scanner to resolve details down to 1.00 mm. The period of the ultrasound must be shorter than this minimum time resolution to provide the necessary detail, dictating that the minimum frequency of the ultrasound be sufficiently high. Fortunately, the minimum frequency required falls within the normal range for diagnostic ultrasound, ensuring that such detail can be resolved without necessitating frequencies that are abnormal or harmful.