What is use of SPECT? CT and MRI?

-Most modern sestamibi scans are performed with singlephoton computed tomography (SPECT) -This technique combines the detection of the radioactivity with the detailed imaging of CT scanning, allowing better sensitivity and more precise anatomic localization than standard planar imaging -CT scanning and magnetic resonance imaging (MRI) have also been used also to locate abnormal parathyroid glands -Standard CT scanning has inadequate sensitivity -Newer techniques of CT scanning with dynamic contrast images (4D-CT) have shown promise, with accuracy rates as high as 88% -MRI can be useful, particularly in cases of recurrent or persistent disease and in ectopic locations such as the mediastinum