The pinwheel sign: artifact from head rotation during SPECT acquisition for dopamine transporter imaging.
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.
Department of Medical Imaging, University of Arizona, Tucson, Arizona; and.
Amy K
AK
Janicek
Ryan J
RJ
Avery
Phillip H
PH
Kuo
D000368:Aged; D016477:Artifacts; D050483:Dopamine Plasma Membrane Transport Proteins / Q000378:metabolism*; D006257:Head / Q000502:physiology; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D009068:Movement; D010300:Parkinson Disease / Q000000981:diagnostic imaging / Q000378:metabolism; D015899:Tomography, Emission-Computed, Single-Photon
D050483:Dopamine Plasma Membrane Transport Proteins
DAT scan; Parkinson’s disease; SPECT; artifact; neurology; quality assurance