- Limited ability in imaging the skull and facial bones -- conventional X-ray or CT scan is better in demonstrating bone details.
- Compared to CT scanning, MRI is less sensitive in demonstrating acute hemorrhage, as in subarachnoid hemorrhage and hemorrhagic infarction.
- Hard to depict calcifications
- MRI does not always distinguish tumor tissue from edema fluid
- Less sensitive in detecting small abnormalities compared to CT scans (poor spatial resolution)
- Inability to scan critically-ill patients requiring life support systems and monitoring devices that employ ferromagnetic materials.
- May be dangerous in scanning patients with metal implants and other metal objects
- May provoke claustrophobia
- Longer exam time compared to CT scans
- Safety in scanning pregnant women is not known.
Popular Posts
-
Like any technique, fMRI has advantages and disadvantages, and in order to be useful, the experiments that employ it must be carefully desi...
-
MRI Prostrate Spectroscopy SINGLE VOXEL Planning --> MRI Prostrate Spectroscopy MULTI VOXEL Planning
-
MR Arthrogram Protocol Axial T1 SE Axial T1 SE (fat sat) Sagittal Obl T1 SE (fat sat) Coronal Obl T1 SE (fat sat) Coronal Obl T2 TSE ...
-
SAGITAL ORBIT MRI PLANNING REFERRAL LINES AXIAL ORBIT MRI PLANNING REFERRAL LINES CORONAL ORBIT MRI PLANNING REFERRAL ... -
--> Routine shoulder protocols are the most variable, but most include SHOULDER MRI SEQUENCES ... -
Sagital T1 (whole head left to right) Axial Flair (brain) Ax T2 hi-res 3D FSE (symphysis of mandible to superior orbit) Cornonal T2...
-
Without contrast " Stroke Follow Up MRI Protocol" Sagital SE T1 Axial DWI Axial EPI-GRE Axial T2 FSE Axial FLAIR 3D T...
-
High Resolution Brainstem Imaging CISS (Constructive Interference Steady State) CISS is a strongly T2 weighted GRE sequence. In essen...
-
Normal MRI Anatomy The pectoralis tendon is best seen on axial T1 and T2-weighted images as a curvilinear low-signal band inserting o...
No comments:
Post a Comment