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CT v. MRI Part 2
Body Imaging
Pelvis
▪MR and CT both have roles in pelvic imaging
▪CT allows for bony info and some smaller structures
▪MR is very good for uterine anatomy and has no ionizing radiation
Endometriosis
▪MR allows for visualization of all the layers of the uterus.
Bladder cancer
▪Both MR and CT can be used
Prostate cancer
▪Endo coils have increased the utility of MR in prostate imaging
▪CT is useful in staging bony involvement
Colon mets
▪Frequently seen as liver mets; however, intestinal lesions can met locally
Liver
▪CT is very good for most abnormalities▸Spiral has improved the efficacy of CT
▪MR has application, especially in mets▸Iron chelate contrast media
Hemangioma
▪Questionable low density areas can be evaluated with spiral techniques and power injectors; thereby, increasing the overall diagnostic ability of the exam
Liver mets
▪For accurate diagnosis contrast is a must
▪Some lesions are difficult to adequately visualize
▪MR has serious application in liver mets
Lungs
▪As a rule the chest is the purview of CT
▪MR as some use in the mediastineum and chest wall
Abdomen
▪Both CT and MR work in the abdomen
▪The key is the appropriate modality for the diagnosis
Pancreatitis
Herniations
▪Omacele
Kidney
▪Renal artery
▪Renal tumors
Neuroblastoma▪Wilm’s tumor
Appendicitis▪Big increase in use since the middle 90s.
Adrenal
▪MR is great for adrenal abnormalities because of it’s multiplanar capabilities
▪Can use surface coils to increase image quality
FlowWithout contrast
▪A variety of fluids move within the abdomen and MR techniques have been developed or are being developed for all of them
Organ Lacerations
▪Most of the structures are at risk for traumatic laceration resulting in a multitude of outcomes
Conclusion