A lucency just means a dark area on the x-ray/CT as opposed to an opacity (which is a white area). I'm not sure what type of CT scan you got (i.e. with or without contrast injection), but don't jump to conclusions about it being cancer..... lucency just means a dark area on the x-ray/CT as opposed to an opacity (which is a white area). I'm not sure what type of CT scan you got (i.e. with or without contrast injection), but don't jump to conclusions about it being cancer.....
The operational details of amplifiers are buried in the field of electronics, but for audio purposes it is usually safe to say that current commercial audio amplifiers are so good that a normally operating amplifier is seldom the limitation on the fidelity of a sound reproduction system.
Audiometry is the term used to describe formal measurement of hearing. The measurement is usually performed using an âaudiometerâ by an âaudiologistâ. In audiometry, hearing is measured at frequencies varying from low pitches (250 Hz) to high pitches (8000 Hz). An example of an audiogram in a person with normal hearing is shown in figure 3.