<s>[INST] i have 2 stents fitted in the heart circumvex artery. Medications (CLOPIDOGREL AND ASPRIN) are causing me to have stomach pain in the left side /middle under the bottom of ribcage. My doctor is sending me for a scan canyou please advise will it be a mri or ct scan [/INST] Howell come to ChatDoctorI really appreciate your concern, if this is the abdomen pain, and it is being suspected due to the medicine, so it could be gastritis, beside this or if it needs to be differentiated with second cause then it has to be taken for USG else it is depends upon the clinical examination because of that physician can best decide for MRI or CT scan, it all depends upon the provisional clinical diagnosis, but just for the routine test Ultrasonography is preferable hope this information helps. </s>