tag:blogger.com,1999:blog-92053823785928892842024-03-27T05:02:59.570-07:00 MRI ProtocolsWorlds Largest MRI Protocol and MRI Techniques DatabaseUnknownnoreply@blogger.comBlogger503125tag:blogger.com,1999:blog-9205382378592889284.post-26664472718632992612020-12-01T23:27:00.004-08:002020-12-02T01:41:31.554-08:00OPTIC CHIASM in lateral BRAIN MRI <p> </p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidEfF0EZPeoQkdXWpymraRY5sQTQQfCN3KGcAjBeUEBpohbu2ppZAnsF-8edWMiIi7hff2PGpZo6H2OYTxtNLcM928FnGDNkO8O1T2CBkagqWmRkEoqHmVzA8gIhShdAJSzzknoS9z4ow/s1280/Aerial_view_of_the_Statue_of_Christ_the_Redeemer.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="720" data-original-width="1280" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidEfF0EZPeoQkdXWpymraRY5sQTQQfCN3KGcAjBeUEBpohbu2ppZAnsF-8edWMiIi7hff2PGpZo6H2OYTxtNLcM928FnGDNkO8O1T2CBkagqWmRkEoqHmVzA8gIhShdAJSzzknoS9z4ow/w640-h360/Aerial_view_of_the_Statue_of_Christ_the_Redeemer.jpg" width="640" /></a></div><br /><p></p>Unknownnoreply@blogger.com12tag:blogger.com,1999:blog-9205382378592889284.post-25868024447563846782020-12-01T22:42:00.005-08:002020-12-01T22:42:56.742-08:00TORCULA IN MRI BRAIN ANATOMY , MRV <p> </p><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiFWGCQpTC1H-xp2baWWCru2aaCQLhObwBPg_PxqEQKE_1fG-XX_tEbZK7TzSgOqp0VRoTIhu2EcP_Eg_00AJG1_EbgqXxMfxAoi-IKRbXpVCN3XAZo_KsedbQ7zspvlSe8AoeO_sz89Qc/s705/Aerial_view_of_the_Statue_of_Christ_the_Redeemer.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="705" data-original-width="655" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiFWGCQpTC1H-xp2baWWCru2aaCQLhObwBPg_PxqEQKE_1fG-XX_tEbZK7TzSgOqp0VRoTIhu2EcP_Eg_00AJG1_EbgqXxMfxAoi-IKRbXpVCN3XAZo_KsedbQ7zspvlSe8AoeO_sz89Qc/w371-h400/Aerial_view_of_the_Statue_of_Christ_the_Redeemer.jpg" width="371" /></a></div><br />Unknownnoreply@blogger.com7tag:blogger.com,1999:blog-9205382378592889284.post-90147428963178431742020-09-09T03:59:00.006-07:002020-09-09T03:59:26.603-07:00MRI BRAIN AXIAL ANATOMY - DETAIL<p> </p><p><img alt="Normal anatomy of the brain on CT and MRI with a few normal variants | Practical Neurology" height="779" src="https://pn.bmj.com/content/practneurol/12/4/225/F3/graphic-5.large.jpg" width="819" /></p><p><br /></p><p><img alt="Normal anatomy of the brain on CT and MRI with a few normal variants | Practical Neurology" height="776" src="https://pn.bmj.com/content/practneurol/12/4/225/F3/graphic-6.large.jpg" width="819" /></p>Unknownnoreply@blogger.com24tag:blogger.com,1999:blog-9205382378592889284.post-78914189588327172092020-09-09T03:58:00.003-07:002020-09-09T03:58:18.065-07:00MRI BRAIN DETAILED ANATOMY<p> <img src="https://pn.bmj.com/content/practneurol/12/4/225/F2.large.jpg" /></p>Unknownnoreply@blogger.com13tag:blogger.com,1999:blog-9205382378592889284.post-47537805272191414142020-08-26T05:18:00.001-07:002020-08-26T05:18:04.058-07:00MRI appearence of Intra Cranial Hemorrhage<p> <img alt="MR appearance of ICH
Hyperacute(0-24 hr.)
Acute(1-2 days)
Early Subacute(3-7 days)
Late subacute(1-4 weeks)
Earl..." height="383" src="https://image.slidesharecdn.com/ichimagingmbskota-170514055048/95/ich-imaging-mbs-kota-17-638.jpg?cb=1494741063" width="510" /><img alt="Hypertension
The main cause of ICH is
hypertension.
72%-81% of pt. have history
of hypertension.
Putamen is the comm..." src="https://image.slidesharecdn.com/ichimagingmbskota-170514055048/95/ich-imaging-mbs-kota-30-638.jpg?cb=1494741063" /></p>Unknownnoreply@blogger.com9tag:blogger.com,1999:blog-9205382378592889284.post-82837900801935080972020-02-29T05:52:00.000-08:002020-02-29T05:52:40.296-08:00Purpose of diffusion-weighted imaging (DWI) in Stoke <div dir="ltr" style="text-align: left;" trbidi="on">
<br />
Early identification of ischemic stroke: diffusion restriction may be seen within minutes following the onset of ischemia<br />
<br />
Correlates well with infarct core<br />
<br />
Differentiation of acute from chronic stroke<br />
<br />
<img alt="Image result for Purpose of diffusion-weighted imaging (DWI) in Stoke" src="https://mriquestions.com/uploads/3/4/5/7/34572113/8011676_orig.jpg" /></div>
Unknownnoreply@blogger.com22tag:blogger.com,1999:blog-9205382378592889284.post-37127259319958124212020-02-29T05:49:00.003-08:002020-02-29T05:49:52.936-08:00Sternum MRI PROTOCOL<div dir="ltr" style="text-align: left;" trbidi="on">
<img alt="Image result for Sternum MRI PROTOCOL" src="data:image/jpeg;base64,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" /><br />
<br />
SAG T1 or T2 with thin sections , sometimes STIR SAG or T2 fat sat<br />
<br />
CORONAL T1 and STIR ( OBLIQUE CORONAL )<br />
<br />
AXIAL T1 and STIR<br />
<br />
<br />
Better position the patient in prone position , you can avoid breathing artifacts and use same shoulder breath reduction sequences if available ( blade propeller like ) .<br />
<br />
<br />
<br />
<br /></div>
Unknownnoreply@blogger.com8tag:blogger.com,1999:blog-9205382378592889284.post-17996591350452587402020-02-18T06:51:00.001-08:002020-02-18T06:51:03.974-08:00UPPER AIRWAY MRI ANATOMY<div dir="ltr" style="text-align: left;" trbidi="on">
<img alt="T1-weighted axial and sagittal images of a normal subject demonstrating anatomical structures in the upper airway. Important structures are labeled with arrows. Bone and teeth are black on MR images. The mandibular rami can be identified due to the fat within the bone marrow of the mandible. " src="https://www.researchgate.net/profile/Jae_Cho9/publication/238055446/figure/fig2/AS:298716511653901@1448230974971/T1-weighted-axial-and-sagittal-images-of-a-normal-subject-demonstrating-anatomical.png" /></div>
Unknownnoreply@blogger.com10tag:blogger.com,1999:blog-9205382378592889284.post-63729642083287451372020-02-18T06:46:00.001-08:002020-02-18T06:46:05.998-08:00MRI BRAIN MIDLINE ANATOMY<div dir="ltr" style="text-align: left;" trbidi="on">
<img alt="Image result for CT of the lingual tonsil" src="https://image.slidesharecdn.com/kumaranatomypptnew2-130202055943-phpapp01/95/mri-sectional-anatomy-of-brain-30-638.jpg?cb=1429873514" /></div>
Unknownnoreply@blogger.com7tag:blogger.com,1999:blog-9205382378592889284.post-8856939015320118082020-02-17T03:32:00.001-08:002020-02-17T03:32:35.547-08:00MRI ELBOW PLANNING <div dir="ltr" style="text-align: left;" trbidi="on">
<img alt="Image result for HAND MRI ANATOMY" src="https://radiologyassistant.nl/img/containers/main/elbow-mri/a520a8a8d0fdda_3-technique.jpg/91fd871181cd29c33205152613c3f1c1.jpg" /><br />
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SAG AND CORONAL MRI ELBOW PLANNING<br />
<img alt="Image result for MRI ELBOW PLANNING" height="213" 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" width="400" /><br />
<img alt="Image result for MRI ELBOW PLANNING" height="360" src="https://image.slidesharecdn.com/mrielbow-171213183415/95/mr-anatomy-of-wrist-and-elbow-rv-5-638.jpg?cb=1513190457" width="640" /><br />
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Unknownnoreply@blogger.com4tag:blogger.com,1999:blog-9205382378592889284.post-73227453921132885712020-02-17T03:30:00.003-08:002020-02-17T03:30:47.935-08:00ELBOW MRI ANATOMY <div dir="ltr" style="text-align: left;" trbidi="on">
<img alt="Image result for HAND MRI ANATOMY" height="428" src="https://radiologyassistant.nl/assets/elbow-mri/a523e983d4c29d_5.jpg" width="640" /><br />
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<img alt="Image result for HAND MRI ANATOMY" height="449" src="https://upload.wikimedia.org/wikipedia/commons/a/a9/MRI._Unimpaired_radial_collateral_ligament_and_extensor_tendon..jpg" width="640" /><br />
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<img alt="Image result for HAND MRI ANATOMY" height="497" src="https://o.quizlet.com/ZP-a4-UXUqOj7jeRgCxXmQ_b.png" width="640" /><br />
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<img alt="Image result for HAND MRI ANATOMY" src="https://live.staticflickr.com/2520/3858888394_b74b540db9.jpg" /></div>
Unknownnoreply@blogger.com97tag:blogger.com,1999:blog-9205382378592889284.post-34123799915517300822019-03-06T04:45:00.000-08:002019-03-06T04:45:07.857-08:00MR Arthrogram Protocol SHOULDER <div dir="ltr" style="text-align: left;" trbidi="on">
MR Arthrogram Protocol<br />
<br />
Axial T1 SE<br />
Axial T1 SE (fat sat)<br />
Sagittal Obl T1 SE (fat sat)<br />
Coronal Obl T1 SE (fat sat)<br />
Coronal Obl T2 TSE (fat sat)<br />
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<img alt="Related image" src="https://greaterwaterburyimagingcenter.org/wp-content/uploads/2015/06/ShoulderMRI2.jpg" /></div>
Unknownnoreply@blogger.com111tag:blogger.com,1999:blog-9205382378592889284.post-31973958725637184262017-05-20T05:37:00.001-07:002017-05-20T05:37:49.790-07:00The Difference between CT Angiogram and MR Angiogram<div dir="ltr" style="text-align: left;" trbidi="on">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIfooTA-6UybbxPxCKxTKnXhv0qPnRthHd8KWWHQ_iS1qSpTzw0Ik2Oi0IsP1OlhTgJV7lyd2kJeonL45WyDQ3ypkL3C6DuXQcxKCZfRKd6waJVZeGjiEbhCPsEzuz1czeqbqaMu7GkMY/s1600/13615025_153081818429424_2760319332672165616_n.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIfooTA-6UybbxPxCKxTKnXhv0qPnRthHd8KWWHQ_iS1qSpTzw0Ik2Oi0IsP1OlhTgJV7lyd2kJeonL45WyDQ3ypkL3C6DuXQcxKCZfRKd6waJVZeGjiEbhCPsEzuz1czeqbqaMu7GkMY/s640/13615025_153081818429424_2760319332672165616_n.jpg" width="640" /></a></div>
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Unknownnoreply@blogger.com163tag:blogger.com,1999:blog-9205382378592889284.post-88842167668838143892016-10-26T10:10:00.003-07:002016-10-26T10:10:42.462-07:00Normal MRI anatomy of TM JOINT<div dir="ltr" style="text-align: left;" trbidi="on">
<img alt="An external file that holds a picture, illustration, etc.
Object name is WJR-6-567-g002.jpg" src="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4147437/bin/WJR-6-567-g002.jpg" /><br />
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Sagittal proton density weighted closed mouth and open mouth view of magnetic resonance imaging. A: On the closed mouth view, the disk is located posterior to the articular eminence (the letter, a). It can be noted that the “bow-tie” shape of the disk: Thicker anterior band (red arrow) and posterior band (white arrow) with a thinner central zone (orange arrow). Bilaminar zone (BZ) is located posterior to the posterior band. It can also be noted that the inferior joint compartment (white arrowhead) between the disk and the mandibular condyle (the letter, b) and superior joint compartment (red arrowhead) between the articular eminence and the disk; B: On the open mouth view (in a different patient), the thinner intermediate zone (red arrow) of the disk is interposed between the articular eminence (the letter, a) and the condylar head (the letter, b) in a “bow-tie” fashion. Orange arrowhead demonstrates temporal lamina and black arrowhead indicate inferior lamina.</div>
Unknownnoreply@blogger.com2tag:blogger.com,1999:blog-9205382378592889284.post-54749232136685960132016-08-24T05:15:00.002-07:002016-08-24T05:15:36.918-07:00Scaphoid MRI coronal and sagital reference lines<div dir="ltr" style="text-align: left;" trbidi="on">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOk0B1M9t6jGVObdF8aGeuUgHRFhCsbtul2AeoMBDQ8TzPmXc1bLt8aXAOIbnYbpzwqMKyGQY7k7gqp0b4X9e_XhKOboM2uvPCLWTpeOSqaQSOqb05GKf7zwvrARqHsjOUaQ_HhvRLYLs/s1600/13912330_618039591689810_1493591120724395134_n.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="330" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOk0B1M9t6jGVObdF8aGeuUgHRFhCsbtul2AeoMBDQ8TzPmXc1bLt8aXAOIbnYbpzwqMKyGQY7k7gqp0b4X9e_XhKOboM2uvPCLWTpeOSqaQSOqb05GKf7zwvrARqHsjOUaQ_HhvRLYLs/s640/13912330_618039591689810_1493591120724395134_n.jpg" width="640" /></a></div>
Scaphoid MRI coronal and sagital reference lines</div>
Unknownnoreply@blogger.com5tag:blogger.com,1999:blog-9205382378592889284.post-55186011817589602132016-08-24T05:13:00.003-07:002016-08-24T05:13:49.256-07:00ABER Protocol for MRI Shoulder <div dir="ltr" style="text-align: left;" trbidi="on">
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNepZ4T6ptp9dtq3JWZOrgpY1NJV-541RY1NQMvNemV-BS0VLmD9Wh-KKjurvS0we2ENg1iZxOIZ7qv_x2Ao-XO0NTr718PnWCoUPpGf8hVkA4c5LKUh98y3kfndtQfcOZFybdY8MZJks/s1600/13912330_618039591689810_1493591120724395134_n.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="329" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNepZ4T6ptp9dtq3JWZOrgpY1NJV-541RY1NQMvNemV-BS0VLmD9Wh-KKjurvS0we2ENg1iZxOIZ7qv_x2Ao-XO0NTr718PnWCoUPpGf8hVkA4c5LKUh98y3kfndtQfcOZFybdY8MZJks/s640/13912330_618039591689810_1493591120724395134_n.jpg" width="640" /></a></div>
ABER Protocol for MRI Shoulder<br />
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Align from coronal scout perpendicular to glenohumeral joint line (perpendicular to glenoid)<br />
Ideally this will be along the humeral shaft but if arm is very abducted the angle of section will be less than this (see Fig.9) </div>
Unknownnoreply@blogger.com8tag:blogger.com,1999:blog-9205382378592889284.post-41000976434566311842016-06-22T07:31:00.000-07:002016-06-22T07:31:12.922-07:00Orbital tissue characteristics on MRI of major structures in orbit <div dir="ltr" style="text-align: left;" trbidi="on">
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Aqueous, vitreous and CSF: Hypointense (dark black) on T1 and hyper intense (bright white) on T2.<br />
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Lens: Hyper intense in relation to vitreous (grey) on T1 and low intense (grey) on T2.<br />
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Scelera, choroid and retina: All the coats appearing as one signal, intermediate signal (grey) on T1 and hypointense (dark) on T2.<br />
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Extraocular muscles: Intermediate intense (grey) on T1 and T2 but enhance with contrast on T1.<br />
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Optic nerve: Signal has similar intensity as cerebral white matter (grey) on T1 and T2. Normal optic nerve does not enhance with contrast.<br />
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Optic nerve sheath: Contains CSF, hence hypointense (dark) on T1 and hyperintense (bright white) on T2.<br />
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Orbital fat: Hyperintense (bright white) on T1 and intermediate (grey) on T2 and becomes dark on fat suppressed images.<br />
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Lacrimal gland: Intermediate signals as grey matter (grey) on T1 and T2 and gives mottled appearance of reduced intensity in orbital fat in lacrimal gland area. It enhances with contrast [Figure 12].<br />
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Cortical bone: Not well delineated as it contains little free water and appears dark (signal void) in T1 and T2. Hence, orbital apex and intracanalicular portion of optic nerve can be better visualized as compared to that of CT.<br />
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Bone marrow: Intense signal on T1 and gray on T2 due to high fat contents.<br />
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<img alt="Figure 9: T1 Coronal posterior" src="http://jcor.in/articles/2013/1/1/images/JClinOphthalmolRes_2013_1_1_29_106283_f9.jpg" /><br />
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Unknownnoreply@blogger.com2tag:blogger.com,1999:blog-9205382378592889284.post-20548882126189140332016-06-22T07:28:00.003-07:002016-06-22T07:28:40.349-07:00MRI versus CT in Orbit imaging<div dir="ltr" style="text-align: left;" trbidi="on">
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MRI: There is no exposure of ionizing radiation, it provides excellent soft tissue resolution of orbital content and is ideal for entire course of optic nerve and pituitary gland as cortical bone appears as hypo intense dark area as there is no water content in bone. Therefore, the entire optic nerve is imaged without any bony shadow interference. MRI can identify age of hematoma. Bone marrow lesions have better resolution. MRI uses safer contrast agent.<br />
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CT: It is relatively economical and ideal for boney pathologies, fractures and calcification in tumor mass. It is especially indicated in intraocular foreign bodies. It is ideal for unstable patients as the test duration is very short.<br />
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Disadvantages<br />
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MRI: It is costly, prolonged examination, not suitable for unstable patients who cannot lie still for long time. It is not possible for obese and claustrophobic patients. Test duration is long. Fat saturation can cause hindrance in interpretation. MRI is contraindicated with ferromagnetic intraocular foreign body. Air and bone, both gives picture of signal void hence difficult to interpret and not suitable for bony lesions and fractures.<br />
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CT: Exposure of ionizing radiation and lesser sensitive than MRI in imaging intracanalicular and intracranial optic nerve, cavernous sinus and diseases of white matter such as disseminated sclerosis. Also, the bony orbital wall can sometimes interfere with the interpretation of soft tissue orbital content.</div>
Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-9205382378592889284.post-6387667988578041302016-06-22T07:25:00.002-07:002016-06-22T07:25:43.004-07:00What are the risks of an MRI?<div dir="ltr" style="text-align: left;" trbidi="on">
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Most sources agree, if done correctly, there are no known dangers to an MRI scan itself. The test is not painful and you cannot feel it. Since radiation is not used, the procedure can be repeated without problems. However, there is a small theoretical risk to a fetus in the first 12 weeks of a woman’s pregnancy, and therefore scans are not performed during this time.<br />
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The magnet used in an MRI is extremely powerful but there are no known harmful effects from it. The magnet may affect pacemakers, artificial limbs, and other medical devices that contain iron - even stopping a watch that is close to it. So, patients who have any type of metallic materials within their body must notify their physician or the MRI staff prior to the examination. Patients with artificial heart valves, metallic ear implants, bullet fragments, and chemotherapy or insulin pumps should not have MRI scanning.<br />
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Metallic chips, materials, surgical clips, or any foreign material like artificial joints, metallic bone plates, or prosthetic devices, etc. can significantly distort the MRI images. Metal parts in the eyes can damage the retina. An X-ray of the eyes may be done before the MRI and if metal is found, the MRI will not be done.<br />
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Iron pigments in tattoos or tattooed eyeliner can cause skin or eye irritation.<br />
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A person who is very overweight or obese may not fit into standard MRI machines.<br />
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An MRI can cause a burn with some medication patches. Be sure to tell your doctor or MRI staff if you are wearing a patch.<br />
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There is a slight risk of an allergic reaction if contrast material is used during the MRI as well as a slight risk of infection. But most reactions are mild and can be treated using medicine.<br />
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Unknownnoreply@blogger.com2tag:blogger.com,1999:blog-9205382378592889284.post-889384213274002102016-06-20T09:04:00.000-07:002016-06-20T09:04:43.610-07:00Diffusion Spectrum Imaging<div dir="ltr" style="text-align: left;" trbidi="on">
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Diffusion spectrum imaging may be described as the reference standard of diffusion imaging because it is the practical implementation of the principles derived earlier and is the diffusion imaging technique that has a sound basis in physical theory (12). Suitable for in vivo application, it provides a sufficiently dense q-space signal sample from which to derive a displacement distribution with the use of the Fourier transform. The technique was first described by Wedeen et al (13).<br />
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If established practice is followed, 515 diffusion-weighted images are acquired successively, each corresponding to a different q vector, that are placed on a cubic lattice within a sphere with a radius of five lattice units. The lattice units correspond to different b (or q) values, from b = 0 (which corresponds to the centerpoint of the sphere) to, typically, b = 12,000 sec/mm2 (which is a very high b value). The Fourier transform is computed over the q-space data. If the imaging matrix size is 128 × 128 × 30, the same number of Fourier transform operations will be necessary as the diffusion probability density function is computed for every brain location.<br />
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Traditionally, 515 images were considered necessary to obtain data of good quality, although the acquisition of that number of images is very time consuming. With improvements in MR imaging hardware and techniques in recent years, and in view of additional very recent experience, fewer sampling points seem to be necessary; the probability density function can be reconstructed with approximately 257 or even 129 images by sampling only one hemisphere in q-space. Of course, the signal-to-noise ratio and angular resolution may change accordingly. The time for imaging of both brain hemispheres thus can be reduced from approximately 45–60 minutes to as little as 10–20 minutes, an acquisition time that makes the technique feasible in a clinical setting (14).<br />
<br />
With the application of the Fourier transform over q-space in every brain position, a 6D image of both position and displacement is obtained. Diffusion at each position is described by the displacement distribution or the probability density function, which provides a detailed description of diffusion and excellent resolution of the highly complex fiber organization, including fiber crossings. Since diffusion spectrum imaging is mostly used for fiber tractography, in which only directional information is needed, the probability density function is normally reduced to an orientation distribution function by summing the probabilities of diffusion in each direction<br />
<br />
<img src="http://pubs.rsna.org/na101/home/literatum/publisher/rsna/journals/content/radiographics/2006/radiographics.2006.26.issue-suppl_1/rg.26si065510/production/images/medium/g06oc14c07x.jpeg" />Diagram shows how an orientation distribution function <i>(ODF)</i> is computed and represented. Left: Image of a section through a schematized 3D displacement distribution. The value of the orientation distribution function was computed along two axes (yellow lines). Center: Histograms represent the displacement distribution along the two axes. The value of the orientation distribution function along those axes equals the area under the curve for each axis. In this example, the two areas under the curve are respectively small and large, indicating that there is much less diffusion in the one direction than in the other. Right: The sum of the areas under the curve is represented by a deformed sphere in which the lengths of the two radii (yellow lines) are short and long, corresponding to little diffusion and much diffusion, respectively. To compute the orientation distribution function, the area under the curve is computed for every direction.</div>
Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-9205382378592889284.post-5480922232611686742016-01-28T07:58:00.002-08:002016-01-28T07:58:35.522-08:00MRI brachial plexus anatomy<div dir="ltr" style="text-align: left;" trbidi="on">
<img src="https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcSkYzeRC5J4c-9epZlnAIlXYPy-suF-S5LZ77GIxX1j64_lbd6IOQ" /><img height="462" src="https://mrimaster.com/anatomy/brachial%20plexus/mri%20brachial%20plexus%20anatomy%203.jpg" width="640" /><img src="http://www.cambridgeorthopaedics.com/easytrauma/classification/nerves/brachplex2.jpg" /></div>
Unknownnoreply@blogger.com159tag:blogger.com,1999:blog-9205382378592889284.post-5288202737567181922016-01-16T03:29:00.002-08:002016-01-16T03:29:48.423-08:00MR enterography<div dir="ltr" style="text-align: left;" trbidi="on">
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Because of radiation concerns about CT enterography, European researchers began developing MR enterography in the early 2000s as an alternative for pediatric patients. The first feasibility study was published in 2005.<br />
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A single CTE exam exposes the patient to about 4 mSv of radiation, though the effective dose can be much higher. A longitudinal European study found that 15% of Crohn's disease patients accumulated more than 75 mSv from radiological procedures in 15 years. The risk of high radiation exposure doubled for patients diagnosed with Crohn's disease before the age of 17 years (Gut, November 2008, Vol. 57:11, pp. 1524-1529).<br />
<img src="http://images.radiopaedia.org/images/1235577/c16082c99b812c822afdf8408495b3_gallery.jpg" /><br />
The CTE protocol served as a natural template for MRE's development, with variations added to reflect individual preferences to capitalize on MRI's inherently higher contrast resolution.<br />
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The preferred agent for bowel distention during MR enterography varies from institution to institution, according to Dr. Michael Gee, PhD, an assistant professor of radiology at Massachusetts General Hospital (MGH) in Boston. Most radiologists use a neutral enteric agent, but some Europeans prefer polyethylene glycol (PEG).<br />
<br />
Gee's group at MGH mix a neutral enteric agent mixed with an oral suspension of ultrasmall iron oxide particles. When mixed with water in the bowel, the mixture looks dark on T2-weighted MRI. Before MRE, an intravenous gadolinium-based contrast medium is injected to enhance extraluminal tissue.</div>
Unknownnoreply@blogger.com2tag:blogger.com,1999:blog-9205382378592889284.post-68525939058897330372015-12-24T00:16:00.002-08:002015-12-24T00:16:42.592-08:00Pelvic MRI Adenomyosis of the uterus<div dir="ltr" style="text-align: left;" trbidi="on">
<h5 style="background-color: white; box-sizing: border-box; color: #80419a; font-family: 'Open Sans', sans-serif; line-height: 1.5; margin: 4px 0px;">
<a href="http://images.radiopaedia.org/images/27793/8f0a8ed660e8c14986a5daf75582a7.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="390" src="http://images.radiopaedia.org/images/27793/8f0a8ed660e8c14986a5daf75582a7.jpg" width="400" /></a><span style="font-weight: normal;"><span style="font-size: small;"><span style="color: #404040;">MRI is the modality of choice to diagnose and characterise adenomyosis, and T2 weighted images (sagittal and axial) are most useful. MRI has a sensitivity of 78-88% and a specificity of 67-93%</span><span style="color: #404040;"> </span></span></span></h5>
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<div>
<span style="font-weight: normal;"><span style="font-size: small;"><span style="color: #404040;"><br /></span></span></span></div>
<div style="background-color: white; box-sizing: border-box; color: #404040; font-family: 'Open Sans', sans-serif; margin-bottom: 14px;">
The most easily recognised feature is thickening of the junctional zone of the uterus to more than 12 mm, either diffusely or focally (normal junctional zone measures no more than 5 mm) <span style="box-sizing: border-box; line-height: 0; position: relative; top: -0.5em; vertical-align: baseline;">5</span>.</div>
<ul style="background-color: white; box-sizing: border-box; font-family: 'Open Sans', sans-serif; margin: 0px 0px 14px 20px; padding: 0px;">
<li style="box-sizing: border-box; color: #404040; margin: 4px 0px 6px;"><span style="box-sizing: border-box; color: #232323;">T2</span><ul style="box-sizing: border-box; margin: 0px 0px 0px 20px; padding: 0px;">
<li style="box-sizing: border-box; margin: 4px 0px 6px;">typically a region of adenomyosis appears as an ill-defined ovoid/diffuse region of thickening, often with small high T2 signal regions representing small regions of cystic change</li>
<li style="box-sizing: border-box; margin: 4px 0px 6px;">the region may also have a striated appearance <span style="box-sizing: border-box; line-height: 0; position: relative; top: -0.5em; vertical-align: baseline;">5</span></li>
</ul>
</li>
<li style="box-sizing: border-box; color: #404040; margin: 4px 0px 6px;"><span style="box-sizing: border-box; color: #232323;">T1</span><ul style="box-sizing: border-box; margin: 0px 0px 0px 20px; padding: 0px;">
<li style="box-sizing: border-box; margin: 4px 0px 6px;">foci of high T1 signal are often seen, indicating menstrual haemorrhage into the ectopic endometrial tissues <span style="box-sizing: border-box; line-height: 0; position: relative; top: -0.5em; vertical-align: baseline;">7</span></li>
</ul>
</li>
<li style="box-sizing: border-box; color: #404040; margin: 4px 0px 6px;"><span style="box-sizing: border-box; color: #232323;">T1 C+ (Gd)</span><ul style="box-sizing: border-box; margin: 0px 0px 0px 20px; padding: 0px;">
<li style="box-sizing: border-box; margin: 4px 0px 6px;">contrast enhanced MR evaluation is usually not indicated for evaluation of adenomyosis, however, if performed, it shows enhancement of the ectopic endometrial glands</li>
</ul>
</li>
</ul>
</div>
Unknownnoreply@blogger.com4tag:blogger.com,1999:blog-9205382378592889284.post-16013671799948649702015-10-14T07:07:00.000-07:002015-10-14T07:07:13.277-07:00Solid Organs: Increased Contrast Enhancement of Lesions 3t mri abdomen<div dir="ltr" style="text-align: left;" trbidi="on">
Increased sensitivity to intravenous gadolinium-based contrast material leads to improved depiction of masses in solid organs such as the liver, pancreas, and kidneys at 3.0-T imaging. Improved lesion conspicuity, even at lower contrast material doses, has already been demonstrated at 3.0 T in the brain, and this effect carries over to the abdomen and pelvis, as well .<br />
<img src="http://www.healthcare.siemens.com/siemens_hwem-hwem_ssxa_websites-context-root/wcm/idc/groups/public/@global/@imaging/@mri/documents/image/mdaw/mtc4/~edisp/mri-magnetom-essenza-clinical-abdomen_4-00134851/~renditions/mri-magnetom-essenza-clinical-abdomen_4-00134851~10.png" /><br />
The increase in SNR at 3.0 T also may be used to increase spatial resolution, leading to higher imaging matrix numbers and thinner sections, particularly with volumetric three-dimensional (3D) acquisitions in a single breath hold. It may even allow the acquisition of isotropic data sets comparable to those from multidetector computed tomography (Fig 5). Alternatively, increased SNR can be used to shorten imaging time, which is particularly useful in patients who have difficulty with breath holding or in claustrophobic patients who have difficulty with longer examination times.</div>
Unknownnoreply@blogger.com2tag:blogger.com,1999:blog-9205382378592889284.post-2335492095687858882015-06-20T06:15:00.001-07:002015-06-20T06:15:46.817-07:00Limitations of breast MRI<div dir="ltr" style="text-align: left;" trbidi="on">
<h3 style="background-color: white; border-bottom-color: rgb(228, 228, 228); border-bottom-style: dotted; border-bottom-width: 1px; font-family: arial, sans-serif; font-size: 1.05em; margin: 0px 0px 5px; padding: 0px 0px 3px 3px;">
<span style="font-size: 12.7679996490479px;">There are several factors that limit the widespread use of breast MRI, such as the following:</span></h3>
<ul style="background-color: white; font-family: arial, sans-serif; font-size: 12.7679996490479px; margin: 0px 0px 0px 10px; padding: 4px 0px 16px 20px;">
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High equipment cost.</div>
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<li style="margin: 0px; padding: 4px 4px 8px 0px;"><div class="topbullet">
Limited scanner availability.</div>
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<li style="margin: 0px; padding: 4px 4px 8px 0px;"><div class="topbullet">
Need for the injection of a contrast agent.</div>
</li>
<li style="margin: 0px; padding: 4px 4px 8px 0px;"><div class="topbullet">
No standard technique.</div>
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<li style="margin: 0px; padding: 4px 4px 8px 0px;"><div class="topbullet">
Poor throughput compared to that of US or mammography.</div>
</li>
<li style="margin: 0px; padding: 4px 4px 8px 0px;"><div class="topbullet">
Large number of images.</div>
</li>
<li style="margin: 0px; padding: 4px 4px 8px 0px;"><div class="topbullet">
Relatively long learning curve for interpretation.</div>
</li>
<li style="margin: 0px; padding: 4px 4px 8px 0px;"><div class="topbullet">
False-positive enhancement in some benign tissues (limited specificity).</div>
</li>
<li style="margin: 0px; padding: 4px 4px 8px 0px;"><div class="topbullet">
Variable enhancement of in situ carcinoma.</div>
</li>
<li style="margin: 0px; padding: 4px 4px 8px 0px;"><div class="topbullet">
An incidence of slowly or poorly enhancing invasive carcinomas of about 5%.</div>
</li>
</ul>
</div>
Unknownnoreply@blogger.com2