{"id":4622,"date":"2025-10-31T16:19:52","date_gmt":"2025-10-31T16:19:52","guid":{"rendered":"https:\/\/protocols.nwforums.com\/index.php\/mra-head-3t\/"},"modified":"2026-01-07T20:14:48","modified_gmt":"2026-01-07T20:14:48","slug":"mra-head-3t","status":"publish","type":"page","link":"https:\/\/protocols.nwforums.com\/index.php\/mra-head-3t\/","title":{"rendered":"MRA Head 3T"},"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
• Sequences are in addition to Routine Adult Brain protocol
• For hyperacute patient, assess for penumbra<\/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

Contrast Agent Parameters<\/h3>\n\n\n\n\n\n\n\n
Contrast Agent<\/th>\nDose<\/th>\nInjection Rate<\/th>\n<\/tr>\n<\/thead>\n
Gadopiclenol (VUEWAY)<\/td>\n0.05 mmol\/kg<\/td>\nCORONAL TWIST Inject 1-2 mL contrast
Inject remaining contrast CE MRV Post – 2 measurements<\/td>\n<\/tr>\n
Saline Flush<\/td>\n20 mL<\/td>\n1-1.5 mL\/sec<\/td>\n<\/tr>\n
Comments<\/td>\n• For bifurcations. 3D TOF if unable to do Carotid CEMRA or CEMRA is inadequate
• Report agent administered and dose
• Use minimal dose for patients with a GFR <60 mL\/sec<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n
\n

Imaging Parameters<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n
Scan Description<\/th>\n3D TOF MRA<\/th>\nPre
CE MRA<\/th>\n		CORONAL
TWIST
Inject 1-2 mL Contrast<\/th>\n		Post
CE MRA
Inject Remaining Contrast
2 Measurements<\/th>\n<\/tr>\n
 <\/th>\n\nView Image<\/a>\n<\/th>\n\nView Image<\/a>\n<\/th>\n\nView Image<\/a>\n<\/th>\n\nView Image<\/a>\n<\/th>\n<\/tr>\n<\/thead>\n
Sequence Name<\/td>\nfl_r<\/td>\nfl<\/td>\nfldyn<\/td>\nfl<\/td>\n<\/tr>\n
Sequence Type<\/td>\nGre<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n<\/tr>\n
Dimension<\/td>\n3D<\/td>\n3D<\/td>\n3D<\/td>\n3D<\/td>\n<\/tr>\n
Acceleration Mode<\/td>\nCS<\/td>\nGRAPPA<\/td>\nGRAPPA<\/td>\nGRAPPA<\/td>\n<\/tr>\n
Acceleration Factor PE<\/td>\n―<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n<\/tr>\n
Acceleration Factor 3D<\/td>\n―<\/td>\n2<\/td>\n24<\/td>\n2<\/td>\n<\/tr>\n
AutoAlign<\/td>\nHead > Brain<\/td>\nHead > Basis<\/td>\nHead > Basis<\/td>\nHead > Basis<\/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
Scan Description<\/th>\n3D TOF MRA<\/th>\nPre
CE MRA<\/th>\n		CORONAL
TWIST<\/th>\n		Post
CE MRA<\/th>\n<\/tr>\n
 <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n<\/tr>\n<\/thead>\n
TR<\/td>\n21.0 ms<\/td>\n3.72 ms<\/td>\n2.20 ms<\/td>\n3.72 ms<\/td>\n<\/tr>\n
TE<\/td>\n3.69 ms<\/td>\n1.33 ms<\/td>\n0.91 ms<\/td>\n1.33 ms<\/td>\n<\/tr>\n
Flip Angle<\/td>\n20 deg<\/td>\n25 deg<\/td>\n15 deg<\/td>\n25 deg<\/td>\n<\/tr>\n
Bandwidth<\/td>\n187 Hz\/Px<\/td>\n450 Hz\/Px<\/td>\n720 Hz\/Px<\/td>\n450 Hz\/Px<\/td>\n<\/tr>\n
Fat-Water Contrast<\/td>\nStandard<\/td>\nStandard<\/td>\nStandard<\/td>\nStandard<\/td>\n<\/tr>\n
Gradient Mode<\/td>\nFast<\/td>\nFast<\/td>\nFast<\/td>\nFast<\/td>\n<\/tr>\n
RF Pulse Type<\/td>\nNormal<\/td>\nNormal<\/td>\nFast<\/td>\nNormal<\/td>\n<\/tr>\n
Asymmetric Echo<\/td>\nWeak<\/td>\nAllowed<\/td>\nStrong<\/td>\nAllowed<\/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\n\n\n\n\n
Scan Description<\/th>\n3D TOF MRA<\/th>\nPre
CE MRA<\/th>\n		CORONAL
TWIST<\/th>\n		Post
CE MRA<\/th>\n<\/tr>\n
 <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n<\/tr>\n<\/thead>\n
Base Resolution<\/td>\n352<\/td>\n288<\/td>\n256<\/td>\n288<\/td>\n<\/tr>\n
Phase Resolution<\/td>\n95%<\/td>\n82%<\/td>\n75%<\/td>\n82%<\/td>\n<\/tr>\n
Slice Resolution<\/td>\n67%<\/td>\n70%<\/td>\n75%<\/td>\n70%<\/td>\n<\/tr>\n
Averages<\/td>\n1<\/td>\n1<\/td>\n―<\/td>\n1<\/td>\n<\/tr>\n
Concatenations<\/td>\n6<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n<\/tr>\n
FoV Read<\/td>\n220 mm<\/td>\n240 mm<\/td>\n300 mm<\/td>\n240 mm<\/td>\n<\/tr>\n
FoV Phase<\/td>\n91%<\/td>\n75%<\/td>\n56%<\/td>\n75%<\/td>\n<\/tr>\n
Phase Encoding Dir.<\/td>\nR >> L<\/td>\nR >> L<\/td>\nR >> L<\/td>\nR >> L<\/td>\n<\/tr>\n
Phase Oversampling<\/td>\n0%<\/td>\n0%<\/td>\n0%<\/td>\n0%<\/td>\n<\/tr>\n
Slice Oversampling<\/td>\n25%<\/td>\n20%<\/td>\n17%<\/td>\n20%<\/td>\n<\/tr>\n
Phase Partial Fourier<\/td>\nOff<\/td>\n7\/8<\/td>\n7\/8<\/td>\n7\/8<\/td>\n<\/tr>\n
Slice Partial Fourier<\/td>\nOff<\/td>\nOff<\/td>\nOff<\/td>\nOff<\/td>\n<\/tr>\n
Flow compensation<\/td>\nSlice\/Read<\/td>\n―<\/td>\n―<\/td>\n―<\/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
Scan Description<\/th>\n3D TOF MRA<\/th>\nPre
CE MRA<\/th>\n		CORONAL
TWIST<\/th>\n		Post
CE MRA<\/th>\n<\/tr>\n
 <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n<\/tr>\n<\/thead>\n
Elliptical Filter<\/td>\nOff<\/td>\nOff<\/td>\nOn<\/td>\nOff<\/td>\n<\/tr>\n
Raw Filter<\/td>\nOff<\/td>\nOff<\/td>\nOff<\/td>\nOff<\/td>\n<\/tr>\n
Distortion Correction<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n<\/tr>\n
Distance Factor<\/td>\n-21%<\/td>\n20%<\/td>\n―<\/td>\n20%<\/td>\n<\/tr>\n
Slice Thickness<\/td>\n0.4 mm<\/td>\n1.0 mm<\/td>\n1.7 mm<\/td>\n1.0 mm<\/td>\n<\/tr>\n
Slices per Slab<\/td>\n48<\/td>\n160<\/td>\n96<\/td>\n160<\/td>\n<\/tr>\n
Acquisition Time<\/td>\n4:31 min<\/td>\n25 sec<\/td>\n1:05 min<\/td>\n25 sec<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Print Instructions And Patient Preparation Instructions • Sequences are in addition to Routine Adult Brain protocol• For hyperacute patient, assess for penumbra Position Supine, head first Coil 20 channel Head\/Neck coil or better Landmark Glabella Contrast Agent Parameters Contrast Agent Dose Injection Rate Gadopiclenol (VUEWAY) 0.05 mmol\/kg CORONAL TWIST Inject 1-2 mL contrastInject remaining contrast […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[47,48,44],"tags":[],"class_list":["post-4622","page","type-page","status-publish","hentry","category-3-0t","category-brain","category-siemens"],"_links":{"self":[{"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages\/4622","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=4622"}],"version-history":[{"count":7,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages\/4622\/revisions"}],"predecessor-version":[{"id":5692,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages\/4622\/revisions\/5692"}],"wp:attachment":[{"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/media?parent=4622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/categories?post=4622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/tags?post=4622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}