{"id":4604,"date":"2025-10-31T16:19:38","date_gmt":"2025-10-31T16:19:38","guid":{"rendered":"https:\/\/protocols.nwforums.com\/index.php\/mra-head-1-5t-without-contrast\/"},"modified":"2025-11-22T20:30:24","modified_gmt":"2025-11-22T20:30:24","slug":"mra-head-1-5t-without-contrast","status":"publish","type":"page","link":"https:\/\/protocols.nwforums.com\/index.php\/mra-head-1-5t-without-contrast\/","title":{"rendered":"MRA Head Without Contrast 1.5T"},"content":{"rendered":"
\n
\n<\/div>\n
\nPrint<\/a><\/p>\n<\/div>\n<\/div>\n
\n

Instructions And Patient Preparation<\/h3>\n
\n
Instructions<\/dt>\n
This sequence is in addition to the Routine Adult Brain protocol<\/dd>\n
Position<\/dt>\n
Supine, head first<\/dd>\n
Coil<\/dt>\n
20 channel Head\/Neck coil or better<\/dd>\n
Landmark<\/dt>\n
Glabella<\/dd>\n<\/dl>\n<\/section>\n
\n

Imaging Parameters<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n
Scan Description<\/th>\n3D TOF MRA<\/th>\n<\/tr>\n
 <\/th>\n\nView Image<\/a>\n<\/th>\n<\/tr>\n<\/thead>\n
Sequence Name<\/td>\nfl_r<\/td>\n<\/tr>\n
Dimension<\/td>\n3D<\/td>\n<\/tr>\n
Acceleration Mode<\/td>\nGRAPPA<\/td>\n<\/tr>\n
Acceleration Factor PE<\/td>\n2<\/td>\n<\/tr>\n
Acceleration Factor 3D<\/td>\n1<\/td>\n<\/tr>\n
AutoAlign<\/td>\nHead > Brain<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n
\n

Acquisition Parameters<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Scan Description<\/th>\n3D TOF MRA<\/th>\n<\/tr>\n
 <\/th>\n <\/th>\n<\/tr>\n<\/thead>\n
TR<\/td>\n23.4 ms<\/td>\n<\/tr>\n
TE<\/td>\n7.15 ms<\/td>\n<\/tr>\n
Flip Angle<\/td>\n23 deg<\/td>\n<\/tr>\n
Bandwidth<\/td>\n120 Hz\/Px<\/td>\n<\/tr>\n
Fat-Water Contrast<\/td>\nStandard<\/td>\n<\/tr>\n
Gradient Mode<\/td>\nFast<\/td>\n<\/tr>\n
RF Pulse Type<\/td>\nNormal<\/td>\n<\/tr>\n
Asymmetric Echo<\/td>\nWeak<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n
\n

Scan Parameters<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Scan Description<\/th>\n3D TOF MRA<\/th>\n<\/tr>\n
 <\/th>\n <\/th>\n<\/tr>\n<\/thead>\n
Base Resolution<\/td>\n320<\/td>\n<\/tr>\n
Phase Resolution<\/td>\n80%<\/td>\n<\/tr>\n
Slice Resolution<\/td>\n50%<\/td>\n<\/tr>\n
Averages<\/td>\n1<\/td>\n<\/tr>\n
Concatenations<\/td>\n6<\/td>\n<\/tr>\n
FoV Read<\/td>\n200 mm<\/td>\n<\/tr>\n
FoV Phase<\/td>\n100%<\/td>\n<\/tr>\n
Phase Encoding Dir.<\/td>\nR >> L<\/td>\n<\/tr>\n
Slice Oversampling<\/td>\n33%<\/td>\n<\/tr>\n
Phase Oversampling<\/td>\n20%<\/td>\n<\/tr>\n
Slice Partial Fourier<\/td>\nOff<\/td>\n<\/tr>\n
Phase Partial Fourier<\/td>\nOff<\/td>\n<\/tr>\n
Flow Compensation<\/td>\nSlice\/Read<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n
\n

Scanning Range<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Scan Description<\/th>\n3D TOF MRA<\/th>\n<\/tr>\n
 <\/th>\n <\/th>\n<\/tr>\n<\/thead>\n
Raw Filter<\/td>\nOff<\/td>\n<\/tr>\n
Elliptical Filter<\/td>\nOff<\/td>\n<\/tr>\n
Distortion Correction<\/td>\n2D<\/td>\n<\/tr>\n
Normalize<\/td>\nB1 Filter<\/td>\n<\/tr>\n
Image Filter<\/td>\nOff<\/td>\n<\/tr>\n
Distance Factor<\/td>\n-31%<\/td>\n<\/tr>\n
Slice Thickness<\/td>\n0.6 mm<\/td>\n<\/tr>\n
Slabs<\/td>\n6<\/td>\n<\/tr>\n
Slices per Slab<\/td>\n36<\/td>\n<\/tr>\n
Acquisition Time<\/td>\n4:34 min<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Print Instructions And Patient Preparation Instructions This sequence is in addition to the Routine Adult Brain protocol Position Supine, head first Coil 20 channel Head\/Neck coil or better Landmark Glabella Imaging Parameters Scan Description 3D TOF MRA   View Image Sequence Name fl_r Dimension 3D Acceleration Mode GRAPPA Acceleration Factor PE 2 Acceleration Factor 3D […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[46,48,44],"tags":[],"class_list":["post-4604","page","type-page","status-publish","hentry","category-1-5t","category-brain","category-siemens"],"_links":{"self":[{"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages\/4604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/comments?post=4604"}],"version-history":[{"count":1,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages\/4604\/revisions"}],"predecessor-version":[{"id":4715,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages\/4604\/revisions\/4715"}],"wp:attachment":[{"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/media?parent=4604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/categories?post=4604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/tags?post=4604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}