Clinical significance of splenic switch-off in adenosine triphosphate 13N-ammonia positron emission tomography in patients without coronary artery disease. - Ohara K; Kawaguchi N; Okayama H; Ueda H; Ueno R; Hirai K; Tanabe Y; Matsuda M; Kido T; Inoue T (Japanese journal of radiology, 2025)