TY - JOUR T1 - The Pinwheel Sign: Artifact from Head Rotation During SPECT Acquisition for Dopamine Transporter Imaging JF - Journal of Nuclear Medicine Technology JO - J. Nucl. Med. Technol. SP - 75 LP - 76 DO - 10.2967/jnmt.113.126078 VL - 42 IS - 1 AU - Amy K. Janicek AU - Ryan J. Avery AU - Phillip H. Kuo Y1 - 2014/03/01 UR - http://tech.snmjournals.org/content/42/1/75.abstract N2 - This case study illustrates the pattern and significance of the pinwheel sign, a SPECT artifact from rotational head motion that can complicate the diagnosis of Parkinson disease. Monitoring the patient during image acquisition is crucial since rotational motion artifacts are difficult to identify on raw or processed images and may lead to incorrect interpretation of findings. ER -