MRI may be helpful in diagnosing venous thrombosis which is often associated with PNH. MRI is also useful for assessing for splenomegaly.
Paroxysmal nocturnal hemoglobinuria MRI
Thalassemia x ray
Paroxysmal nocturnal hemoglobinuria physical examination
Autoimmune hemolytic anemia ultrasound
Paroxysmal nocturnal hemoglobinuria echocardiography or ultrasound
Anemia of chronic disease CT scan
Glucose-6-phosphate dehydrogenase deficiency physical examination
Hemolytic anemia MRI scan