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MRI sequence parameters

Changed by Yuranga Weerakkody, 24 Nov 2014
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Listed in the table below are the most common acquisition parameters for commonly used MRI pulse sequences. The specific parameters for any given study varies from one manufacturer to another, and from one imaging center to another. 

Sequence

 TR(msec) TE(msec) Flip Angle(degrees) Inversion Time(msec)

T1

 <800 &lt;30 90 NA
;3090NAPD >1000 &lt;30 90 NA
;3090NA

T2

 >2000 &gt;80 90 NA
;8090NAFSE T2 >2000 &gt;60 90 NA
;6090NAGRE T1 Variable &lt;30 70-110 NA
;3070-110NAGRE T2* Variable &lt;30 5-20 NA
;305-20NASTIR >2000 &gt;60 180;60180-&gt;90 120;90120-170
FLAIR >3000 >80, variable 1700 1700–2200
  • -<p>Listed in the table below are the most common acquisition parameters for commonly used MRI pulse sequences. The specific parameters for any given study varies from one manufacturer to another, and from one imaging center to another. </p><table border="0" cellpadding="0" cellspacing="0" width="356" style="border-collapse:
  • - collapse;width:268pt">
  • -<colgroup>
  • -<col width="68" style="mso-width-source:userset;mso-width-alt:2486;width:51pt">
  • -<col width="64" style="width:48pt">
  • -<col width="85" style="mso-width-source:userset;mso-width-alt:3108;width:64pt">
  • -<col width="69" style="mso-width-source:userset;mso-width-alt:2523;width:52pt">
  • -<col width="70" style="mso-width-source:userset;mso-width-alt:2560;width:53pt">
  • -</colgroup>
  • -<tbody>
  • -<tr style="height:15.0pt">
  • -<td style="height:15.0pt;width:51pt"><strong>Sequence</strong></td>
  • - <td style="border-left:none;width:48pt"><strong>TR<br>(msec)</strong></td>
  • - <td style="border-left:none;width:64pt"><strong>TE <br>(msec)</strong></td>
  • - <td style="border-left:none;width:52pt"><strong>Flip Angle<br>(degrees)</strong></td>
  • - <td style="border-left:none;width:53pt"><strong>Inversion Time<br>(msec)</strong></td>
  • - </tr>
  • -<tr style="height:15.0pt">
  • -<td style="height:15.0pt;border-top:none"><a href="/articles/http-radiopaedia-org-articles-t1-weighted-image" title="http://radiopaedia.org/articles/t1-weighted-image"><strong>T1</strong></a></td>
  • - <td style="border-top:none;border-left:none">&lt;800</td>
  • - <td style="border-top:none;border-left:none">&lt;30</td>
  • - <td style="border-top:none;border-left:none">90</td>
  • - <td style="border-top:none;border-left:none">NA</td>
  • - </tr>
  • -<tr style="height:15.0pt">
  • -<td style="height:15.0pt;border-top:none"><strong>PD</strong></td>
  • - <td style="border-top:none;border-left:none">&gt;1000</td>
  • - <td style="border-top:none;border-left:none">&lt;30</td>
  • - <td style="border-top:none;border-left:none">90</td>
  • - <td style="border-top:none;border-left:none">NA</td>
  • - </tr>
  • -<tr style="height:15.0pt">
  • -<td style="height:15.0pt;border-top:none"><a href="/articles/t2-weighted-image" title="T2"><strong>T2</strong></a></td>
  • - <td style="border-top:none;border-left:none">&gt;2000</td>
  • - <td style="border-top:none;border-left:none">&gt;80</td>
  • - <td style="border-top:none;border-left:none">90</td>
  • - <td style="border-top:none;border-left:none">NA</td>
  • - </tr>
  • -<tr style="height:15.0pt">
  • -<td style="height:15.0pt;border-top:none"><strong>FSE T2</strong></td>
  • - <td style="border-top:none;border-left:none">&gt;2000</td>
  • - <td style="border-top:none;border-left:none">&gt;60</td>
  • - <td style="border-top:none;border-left:none">90</td>
  • - <td style="border-top:none;border-left:none">NA</td>
  • - </tr>
  • -<tr style="height:15.0pt">
  • -<td style="height:15.0pt;border-top:none"><strong>GRE T1</strong></td>
  • - <td style="border-top:none;border-left:none">Variable</td>
  • - <td style="border-top:none;border-left:none">&lt;30</td>
  • - <td style="border-top:none;border-left:none">70-110</td>
  • - <td style="border-top:none;border-left:none">NA</td>
  • - </tr>
  • -<tr style="height:15.0pt">
  • -<td style="height:15.0pt;border-top:none"><strong>GRE T2*</strong></td>
  • - <td style="border-top:none;border-left:none">Variable</td>
  • - <td style="border-top:none;border-left:none">&lt;30</td>
  • - <td style="border-top:none;border-left:none">5-20</td>
  • - <td style="border-top:none;border-left:none">NA</td>
  • - </tr>
  • -<tr style="height:15.0pt">
  • -<td style="height:15.0pt;border-top:none"><strong>STIR</strong></td>
  • - <td style="border-top:none;border-left:none">&gt;2000</td>
  • - <td style="border-top:none;border-left:none">&gt;60</td>
  • - <td style="border-top:none;border-left:none">180-&gt;90</td>
  • - <td style="border-top:none;border-left:none">120-170</td>
  • - </tr>
  • -<tr style="height:15.0pt">
  • -<td style="height:15.0pt;border-top:none"><strong>FLAIR</strong></td>
  • - <td style="border-top:none;border-left:none">&gt;3000</td>
  • - <td style="border-top:none;border-left:none">&gt;80, variable</td>
  • - <td style="border-top:none;border-left:none"> </td>
  • - <td style="border-top:none;border-left:none">1700–2200</td>
  • - </tr>
  • -</tbody>
  • -</table>
  • +<p>Listed in the table below are the most common acquisition parameters for commonly used MRI pulse sequences. The specific parameters for any given study varies from one manufacturer to another, and from one imaging center to another. </p><p><strong>Sequence</strong><strong>TR<br>(msec)</strong><strong>TE<br>(msec)</strong><strong>Flip Angle<br>(degrees)</strong><strong>Inversion Time<br>(msec)</strong></p><p><a href="/articles/http-radiopaedia-org-articles-t1-weighted-image"><strong>T1</strong></a>&lt;800&lt;3090NA</p><p><strong>PD</strong>&gt;1000&lt;3090NA</p><p><a href="/articles/t2-weighted-image"><strong>T2</strong></a>&gt;2000&gt;8090NA</p><p><strong>FSE T2</strong>&gt;2000&gt;6090NA</p><p><strong>GRE T1</strong>Variable&lt;3070-110NA</p><p><strong>GRE T2*</strong>Variable&lt;305-20NA</p><p><strong>STIR</strong>&gt;2000&gt;60180-&gt;90120-170</p><p><strong>FLAIR</strong>&gt;3000&gt;80, variable 1700–2200</p>

References changed:

  • 3. Tsuchiya K, Katase S, Yoshino A et-al. FLAIR MR imaging for diagnosing intracranial meningeal carcinomatosis. AJR Am J Roentgenol. 2001;176 (6): 1585-8. <a href="http://www.ajronline.org/content/176/6/1585.full">AJR Am J Roentgenol (full text)</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/11373237">Pubmed citation</a><span class="ref_v3"></span>
  • 1. Helms CA, Major NM, Anderson MW et-al. Musculoskeletal MRI. Saunders. (2009) ISBN:1416055347. <a href="http://books.google.com/books?vid=ISBN1416055347">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/1416055347">Find it at Amazon</a><span class="ref_v3"></span>
  • 2. MR Pulse Sequences: What Every Radiologist Wants to Know but Is Afraid to Ask1. Radiographics. 2006;26 (2): 513-537. <a href="http://radiographics.rsna.org/content/26/2/513.full">Radiographics (full text)</a> - <a href="http://dx.doi.org/10.1148/rg.262055063">doi:10.1148/rg.262055063</a><span class="ref_v3"></span>
  • Tsuchiya K, Katase S, Yoshino A et-al. FLAIR MR imaging for diagnosing intracranial meningeal carcinomatosis. AJR Am J Roentgenol. 2001;176 (6): 1585-8. <a href="http://www.ajronline.org/content/176/6/1585.full">AJR Am J Roentgenol (full text)</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/11373237">Pubmed citation</a><span class="ref_v3"></span>
  • Helms CA, Major NM, Anderson MW et-al. Musculoskeletal MRI. Saunders. (2009) ISBN:1416055347. <a href="http://books.google.com/books?vid=ISBN1416055347">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/1416055347">Find it at Amazon</a><span class="ref_v3"></span>
  • . MR Pulse Sequences: What Every Radiologist Wants to Know but Is Afraid to Ask1. Radiographics. 2006;26 (2): 513-537. <a href="http://radiographics.rsna.org/content/26/2/513.full">Radiographics (full text)</a> - <a href="http://dx.doi.org/10.1148/rg.262055063">doi:10.1148/rg.262055063</a><span class="ref_v3"></span>

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