The emergence of new management rules and algorithms for suspected pulmonary embolism (PE) allows clinicians to limit certain additional examinations. The PERC rule can « rule-out » PE without complementary investigation. The revised Geneva and Wells scores, the YEARS algorithm, the use of age-adjusted D-dimers, and D-dimers adjusted to clinical probability can all reduce the need for CT scan. Finally, PESI and HESTIA provide help to choose which patient is eligible to be treated as out-patient.