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          leisure time  
          
                                   
                 
                                      author：entertainment   
                                        
                                      
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browse：69945
                                  
                                    
          
                                    
            
          
 
          This image provided by Eisai in January 2023 shows vials and packaging for their medication, Leqembi.
          A newly approved Alzheimer’s drug made by Eisai and Biogen, called Leqembi, aims to clear out amyloid plaques in patients’ brains.																									Illustration: Alex Hogan/STAT; Photo: Eisai via AP
          WASHINGTON — Medicare on Monday proposed ending restrictions on how many PET scans patients can receive to detect amyloid plaques in their brains, which will offer physicians more options as they treat patients with a new drug to slow the progression of dementia.
          The agency that oversees Medicare had previously restricted coverage to a single scan for patients who participated in clinical studies. Advocates had warned that could cause issues related to a new class of Alzheimer’s drugs designed to clear those plaques.
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          “We know there is significant interest in the medical community about new treatments that may be effective in slowing the development of Alzheimer’s disease. PET scans are an important part of diagnosis and treatment of Alzheimer’s disease,” Centers for Medicare and Medicaid Administrator Chiquita Brooks-LaSure said in a written statement.
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