Homepage Downloads Area Videos MONDAY, MARCH 16, 2015 FIXTURE ANEFACTO (Annefact Artifact in MRI) by luis clubs Artasona. March 2015 With the nickname "artifacts" used in the field of MRI, designating any stroke, stain or shading that appears unexpectedly and degrades the image quality of magnetic resonance tomography. There are many causes artifacts, some are physical and other techniques. This section shows some images with artifacts anefacto , explains why they occur and how they can be avoided. The appearance of these artifacts is common in the scans of the spine and knee when multichannel surface antennas Phased Array and rapid pulse sequences, such as Fast Spin Echo are used. They are characterized by a bright and dark lines that appear all images of sagittal and coronal orientation. Appear white paint strokes which are arranged staggered in the center of the image, in that the phase coding (Figure 1). Are caused by interference signals which are generated outside the FOV and contours which are detected by any of the distal antenna modules. It is a technical error that are not properly selected modules corresponding to the anatomical structure being scanned antenna. ▼ 2015 (9) ▼ March (2) FIXTURE ANEFACTO (Annefact Artifact in MRI) b ... VEINS basivertebral. (Basivertebral Veins: CT an ... ► February (3) ► January (4) ► 2014 (46) ► 2013 (52) ► 2012 (61) ► 2011 (56) ARCHIVE Victor Mazas Zorzano Luis Mazas Artasona CONTRIBUTORS BOSS OCCIPITAL EXTERNAL (ossified Spur on the External Occipital Protuberance) (Verkalkte Sporn auf der Externe Hinterhaupthöcker) by luis clubs Artasona. June 2012. Experts say that the highest percentage of radiation received by humans comes from the radiological tests that looks ... MAGNA ASPECT OF THE TANK IN COMPUTED TOMOGRAPHY AND MAGNETIC RESONANCE TOMOGRAPHY (CT and MR Imaging of the Cisterna Magna) (Computertomographie und des Kernspintomographie Cisterna Magna) by luis clubs Artasona. January 2013. With the name or Magna cerebellomedullary cistern (Figures 1, 2, 3 and 4), is MOST POPULAR TOPICS COUNTER 8 0 9 8 7 7 Select Language TRANSLATOR Clik on the image THE TRUNK ASOM The Radiological Cases FACEBOOK INTERESTING BLO AJNR Blog AJNR Tweetchat Social Media in S Meetings For Ap Tweetchat,AmyKo the Mayo Clinic andAliRadmanMD University of Calif Francisco joined u the ro ... 3 hours ago Radiology HUVa Case number 7. P 1 More Next Blog»
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4/25/2015 The Chest Radiology: FIXTURE ANEFACTO (Annefact Artifact in MRI) by luis clubs Artasona. March 2015
FIXTURE ANEFACTO (Annefact Artifact in MRI) byluis clubs Artasona. March 2015
With the nickname "artifacts" used in the field of MRI, designating any stroke, stain orshading that appears unexpectedly and degrades the image quality of magneticresonance tomography. There are many causes artifacts, some are physical andother techniques. This section shows some images with artifacts anefacto ,explains why they occur and how they can be avoided.
The appearance of these artifacts is common in the scans of the spine and kneewhen multichannel surface antennas Phased Array and rapid pulse sequences, suchas Fast Spin Echo are used. They are characterized by a bright and dark lines thatappear all images of sagittal and coronal orientation. Appear white paint strokeswhich are arranged staggered in the center of the image, in that the phase coding(Figure 1). Are caused by interference signals which are generated outside the FOVand contours which are detected by any of the distal antenna modules. It is atechnical error that are not properly selected modules corresponding to theanatomical structure being scanned antenna.
Occipital Protuberance)(Verkalkte Sporn auf derExterne Hinterhaupthöcker) byluis clubs Artasona. June2012.Experts say that the highestpercentage of radiationreceived by humans comesfrom the radiological tests thatlooks ...
MAGNAASPECT OFTHE TANK INCOMPUTEDTOMOGRAPHY
AND MAGNETICRESONANCETOMOGRAPHY (CT and MRImaging of the CisternaMagna)(Computertomographie unddes KernspintomographieCisterna Magna) by luis clubsArtasona. January 2013.With the name or Magnacerebellomedullary cistern(Figures 1, 2, 3 and 4), is
MOST POPULAR TOPICS
COUNTER
8 0 9 8 7 7
Select Language
TRANSLATOR
Clik on the image
THE TRUNK ASOMATE
The Radiological Cases
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AJNR BlogAJNR Tweetchat Recap Social Media in ScientificMeetings For April's #AJNRTweetchat,AmyKotsenas fromthe Mayo ClinicandAliRadmanMD from theUniversity of California SanFrancisco joined us to discussthe ro ...3 hours ago
FIGURE 1) anefacto artifacts that are superimposed on the lumbosacral spinepreventing viewing.
Key Words: MRI artifacts. Annefact Artifact. MRI.
FIGURE 2) Antenna "Phased Array" column (Signa Excite 1'5T. GE). This type ofantennas consist of several modules that collect reception signal RM individually. Inthis, there are six modules marked with numbers (arrows). As a rule, the first two areactivated CS 12 , to perform a scan of the cervical spine. For the spine should beactivated following TS 34 and lumbosacral, the remaining LS 56. But not all patientsare equally high, so sometimes you have to make corrections to this general rule notto occur artifacts. Here comes in the Technical expertise and quality control MedicalResident.
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FIGURE 3) In this figurative recreation are marked antenna modules 2,3,4 and 5. 1to 6 are not seen but are there. The FOV marked by the Technical covers the dorsalregion, both for proper study should enable the modules 23 and 4, so that the artifactanefacto does not occur.
FIGURE 4) However enabled, incorrectly, improper CS123 modules (yellow arrow)to the spine. The result is a lack of signal at the lower portion of the image (module 4because he has collected the anatomical region that signal is not activated) and theoccurrence of an artifact anefacto bright produced by spurious signals collected byModule 1 of the antenna is outside the contours of the FOV but turned How can I fixthis? For selecting the appropriate modules and repeating the scan. (Four minutes oftime).
In the following images (Figures 5,6,7 and 8) anefacto artifact in columns on the leftis appreciated, because they are selected incorrectly modules CS 123 (yellowarrows) dela Phased Array Antenna. however, in the left columns artifact disappearsbecause it has been repeated CT scan activating the correct modules 234 of theantenna (white arrows).
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