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Because visual inspection cannot reliablydistinguish certain skin discolorations from skin cancers, dermatologists atclinics have needed to perform tests of skin tissue taken from patients. At Westville Hospital
, dermatologicaldiagnostic costs were reduced by the purchase of a new imaging machine thatdiagnoses skin cancer in such cases as reliably as the tissue tests do. Consequently, even though the machine isexpensive, a dermatological clinic in Westville is considering buying one toreduce diagnostic costs.
Which of the following would it be mostuseful for the clinic to establish in order to make its decision?
- Whether the visits of patients who require diagnosis of skin discolorations tend to be shorter in duration at the clinic than at the hospital
- Whether the principles on which the machine operates have been known to science for a long time
- Whether the machine at the clinic would get significantly less heavy use than the machine at the hospital does
- Whether in certain cases of skin discoloration, visual inspection is sufficient to make a diagnosis of skin cancer
- Whether hospitals in other parts of the country have purchased such imaging machines
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发表于 2011-9-5 14:37:33
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