Personalised treatment of heart disease requires an understanding of the patient-specific characteristics,
which can vary over time. A newly developed implantable surface acoustic wave pressure sensor, capable of
continuous monitoring of the left ventricle filling pressure, is a novel device for personalised management of
patients with heart disease. However, a one-size-fits-all approach to device sizing will affect its positioning
within the pulmonary artery and its relationship to the interrogating device on the chest wall on a patientspecific
level. In this paper, we analyse the spatial orientation and morphology of the pulmonary artery and its
main branches in patients who could benefit from the device and normal controls. The results could optimise
the design of the sensor, its stent, and importantly its placement, ensuring long-term monitoring in patient
groups.