1. Kuhl DE, Hale J, Eaton WL. Transmission scanning: a useful adjunct to conventional emission scanning for accurately keying isotope deposition to radiographic anatomy. Radiology 1966: 87: 278.
2. Anger HO, McRae J. Transmission scintiphotography. J Nucl Med 1968; 9: 267?269.
3. Sorenson JA, Briggs RC, Cameron JR.99mTc point source for transmission scanning. J Nucl Med 1969; 10: 252?253.
4. Morozumi T, Nakajima M, Ogawa K, Yuta S. Attenuation correction methods using the information of attenuation distribution for single photon emission CT.Med Imag Tech 1984;2: 20?28.
5. Manglos SH, Jaszczak RJ, Floyd CE, Hahn LJ, Greer KL, Coleman RJ. Nonisotropic attenuation in SPECT: phantom tests of quantitative effects and compensation techniques.J Nucl Med 1987; 28: 1584?1591.