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Radionuclide Study in Pulmonary Sequestration

Jikei University School of Medicine, Minato-ku, Tokyo, Japan

Correspondence: For reprints contact: Kenji Kawakami, Dept. of Radiology, Jikei University School of Medicine, 28-8, Nishi-Shimbashi, 3-Chome, Minato-ku, Tokyo 105, Japan.

ABSTRACT

A radionuclide hemodynamic study was helpful in demonstrating blood supply from the aberrant artery in pulmonary sequestration. Two regions of interest were set up in corresponding lower lung fields of a patient suspected of sequestration in the left lower lobe. Following i.v. injection of Tc-99m albumin, radioactivity appeared in the left target area 8–10 sec behind that on the right. This delay is due to the systemic arterial supply to the sequestration, rather than through the pulmonary artery.

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