Al-Al-Shaikh, M An MRI evaluation of changes in piriformis muscle morphology induced by botulinum toxin injections in the treatment of piriformis syndrome. [electronic resource] - Diagnostic and interventional imaging Jan 2015 - 37-43 p. digital Publication Type: Clinical Study; Journal Article ISSN: 2211-5684 Standard No.: 10.1016/j.diii.2014.02.015 doi Subjects--Topical Terms: AdultAgedBotulinum Toxins--administration & dosageCase-Control StudiesFemaleHumansInjections, IntralesionalMagnetic Resonance ImagingMaleMiddle AgedMuscle, Skeletal--drug effectsPiriformis Muscle Syndrome--drug therapyRetrospective Studies