| NAA | N-acetyl aspartate; naphthaleneacetic acid; neutral amino acid; neutron activation analysis; neutrop... |
|---|---|
| PBNA | partial body neutron activation |
| PKAR | protein kinase activation ratio |
| RNAA | radiochemical neutron activation analysis |
| RVA | re-entrant ventricular arrhythmia; right ventricle activation; right vertebral artery |