(a) The results of any medically acceptable test or procedure
reported by a physician and not addressed in this subpart, which tends
to demonstrate the presence or absence of pneumoconiosis, the sequelae
of pneumoconiosis or a respiratory or pulmonary impairment, may be
submitted in connection with a claim and shall be given appropriate
consideration.
(b) The party submitting the test or procedure pursuant to this
section bears the burden to demonstrate that the test or procedure is
medically acceptable and relevant to establishing or refuting a
claimant's entitlement to benefits.
