CT v. MRI Part 2

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CT v. MRI Part 2

• Body Imaging

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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

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Endometriosis

• MR allows for visualization of all the layers of
  the uterus.

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Bladder cancer

• Both MR and CT can be used

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Prostate cancer

• Endo coils have increased the utility of MR in
  prostate imaging
• CT is useful in staging bony involvement

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Colon mets

• Frequently seen as liver mets however,
  intestinal lesions can met locally

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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

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Hemangioma

• Questionable low density areas can be evaluated
  with spiral techniques and power injectors
  thereby, increasing the overall diagnostic
  ability of the exam

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Liver mets

• For accurate diagnosis contrast is a must
• Some lesions are difficult to adequately
  visualize
• MR has serious application in liver mets

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Lungs

• As a rule the chest is the purview of CT
• MR as some use in the mediastineum and chest wall

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Abdomen

• Both CT and MR work in the abdomen
• The key is the appropriate modality for the
  diagnosis

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Pancreatitis
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Herniations

• Omacele

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Kidney

• Renal artery
• Renal tumors

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Neuroblastoma

• Wilms tumor

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Appendicitis

• Big increase in use since the middle 90s.

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Adrenal

• MR is great for adrenal abnormalities because of
  its multiplanar capabilities
• Can use surface coils to increase image quality

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Flow
Without contrast

• A variety of fluids move within the abdomen and
  MR techniques have been developed or are being
  developed for all of them

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Organ Lacerations

• Most of the structures are at risk for traumatic
  laceration resulting in a multitude of outcomes

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Conclusion