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Nearly all emergency department doctors recently surveyed said they order magnetic resonance imaging or computed tomography scans their patients may not need

Majority of ER Doctors Admit Ordering Tests Defensively

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97 percent said they had patients undergo procedures that weren't medically needed
For patients with suspected angina due to coronary heart disease

ACC: CTCA Alters Diagnosis, Management in Suspected Angina

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CTCA alters diagnosis, testing, tx for patients with suspected angina due to coronary heart disease
Use of the American College of Radiology Lung Imaging Reporting and Data System classification system for low-dose computed tomography can reduce the false-positive result rate but also decreases sensitivity

Lung-RADS Criteria Can Reduce False-Positive Result Rate

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Reduction in false-positive result rate, but reduction in sensitivity also observed