Fusion IMAGING.pptx

Myocardial fusion imaging

1. Fusion IMAGING Dr. ROHIT (PG-2)

2. Hybrid imaging / FUSION Imaging  refers to the fusion of two (or more) imaging modalities to form a new technique. INTRODUCTION

3. Existing hybrid imaging modalities include : Ultrasound & CT Ultrasound & MRI MRI & CT

4. Other hybrid modalities include PET-CT SPECT-CT PET-MRI SPECT-MRI

5. benefits I ncreased diagnostic accuracy precise monitoring of interventional procedures reduced radiation exposure, e.g. dynamic US after obtaining CT map

6. Fusion imaging of real-time ultrasonography with CT or MRI for hepatic intervention PROCEDURE : Images are transferred from CT/MRI to USG machine. -A sensor unit is attached to usg probe to detect any change in position of probe during the scan. -The transmitter of sensor unit is placed on surface of patient. -During examination, split images are seen on usg machine screen -An attempt is made to match these two images . This is done by freezing CT/MRI image to some anatomic lndmark ( e.g PV bifurcation) and identify the same landmark on usg -Images are matched

7. applications Lesions poorly visualized on usg Clearly seen on CT/ MRI USG guided intervention or RFA with visualization on CT/MRI done I I

8. Plane registration Point registration

9. The process of image fusion between real-time ultrasonography (US) and magnetic resonance (MR) images by using internal markers.

10. Fusion imaging-guided biopsy of a focal hepatic lesion with poor sonographic conspicuity in a patient with pancreatic head cancer.

11. Fusion imaging-guided biopsy of a focal hepatic lesion in a patient with hepatitis B virus carrier.

12. Fusion imaging-guided radiofrequency ablation (RFA) of a 1.2-cm hepatocellular carcinoma (HCC) with poor sonographic conspicuity in a patient with a hepatitis B virus carrier.

13. LIMITATIONS Can’t be done when CT/MRI is contraindicated Synchronisation of images not always possible Prolong examination time Expensive- multiple interventions may be needed

14. THANK YOU