Figure 9a: Transverse intermolecular double-quantum coherence (IDQC) MR images (1500/60; matrix, 128 x 128; four signals acquired) reveal enhanced contrast in healthy human brain. (a) IDQC-encode gradient was applied along direction of the magnetic field (B0). (b) IDQC-encode gradient was applied along "magic angle," where signals are minimized. (c) Conventional T2-weighted single-quantum coherence image. Images in a and b are displayed with same window setting but are different from that for c. (Image courtesy of Jianhui Zhong, PhD, University of Rochester, Rochester, NY.)