To the Editor: We greatly appreciated the thoughtful book review by Andrew F. Leuchter, M.D. (1), published in the May 2009 issue of the Journal, on Daniel Amen's Healing the Hardware of the Soul: Enhance Your Brain to Improve Your Work, Love, and Spiritual Life (2). Dr. Amen claims that numerous psychiatric illnesses can be diagnosed and treatments prescribed based on resting single photon emission computerized tomography (SPECT) images. Dr. Leuchter correctly points out the absence of empirical data to support the claims of Dr. Amen. Several years ago, following conversations with Dr. Amen on how to address such concerns, the Brain Imaging Council of the Society of Nuclear Medicine offered Dr. Amen the opportunity to submit his analyses of a blinded set of SPECT scans (to have been prepared by the Brain Imaging Council) to determine how effective his technique is at correctly diagnosing subjects. Although this proposed study could have provided support for his approach, the offer was declined. Nevertheless, for more than two decades, Dr. Amen has persisted in using scientifically unfounded claims to diagnose and treat patients (over 45,000 by his own count).