Low back pain is very common and most resolve within a few weeks. Therefore, not every case of low back pain requires immediate imaging. Early imaging often does not change treatment.
However, some findings require further examination: progressive loss of strength in the legs, deterioration in urinary or stool control, loss of sensation around the anus, fever, unexplained weight loss, previous cancer history, and pain that begins after a significant fall.
If these findings are present, magnetic resonance or tomography is planned. If there is no finding, the priority is pain control, preservation of mobility and, if necessary, physical therapy approaches; imaging comes to the agenda if the complaint persists.