<prompt> Tc labelled RBCs are used forBiliary treeRenal diseasePulmonary embolismSpleenic disease  <response>: D i.e. Splenic disease Tc99 - labelled RBCs provides information about red cell pooling, so it is used in : Haerningioma detection Gastrointestinal bleedingQ Spleenic diseaseQ Cardiac ventriculography 