Oncology & Cancer

X-rays have low diagnostic yield for pulmonary metastases

(HealthDay)—For patients treated for T1a renal cell carcinoma, chest X-rays have low diagnostic yield for detecting pulmonary metastases, according to a study published in the August issue of The Journal of Urology.

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Radio frequency

Radio frequency (RF) is a frequency or rate of oscillation within the range of about 3 Hz to 300 GHz. This range corresponds to frequency of alternating current electrical signals used to produce and detect radio waves. Since most of this range is beyond the vibration rate that most mechanical systems can respond to, RF usually refers to oscillations in electrical circuits.

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