{"id":4601,"date":"2025-10-31T16:19:36","date_gmt":"2025-10-31T16:19:36","guid":{"rendered":"https:\/\/protocols.nwforums.com\/index.php\/internal-auditory-canals-iac-1-5t\/"},"modified":"2026-01-07T20:14:46","modified_gmt":"2026-01-07T20:14:46","slug":"internal-auditory-canals-iac-1-5t","status":"publish","type":"page","link":"https:\/\/protocols.nwforums.com\/index.php\/internal-auditory-canals-iac-1-5t\/","title":{"rendered":"Internal Auditory Canals 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 may be a standalone exam for follow-up or done in conjunction with sequences from Routine Adult Brain protocol
• Contrast is used for almost all examinations
• Can do noncontrast as screening study<\/dd>\n
Position<\/dt>\n
Supine, head first<\/dd>\n
Coil<\/dt>\n
20 channel Head and 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\n
Contrast Agent<\/th>\nDose<\/th>\nInjection Rate<\/th>\n<\/tr>\n<\/thead>\n
Gadopiclenol (VUEWAY)<\/td>\n0.05 mmol\/kg<\/td>\nHand Bolus<\/td>\n<\/tr>\n
Saline Flush<\/td>\n10 mL<\/td>\nHand Bolus<\/td>\n<\/tr>\n<\/tbody>\n
Comments<\/td>\n• Report agent administered and dose
• Use minimal dose for patients with a GFR <60 mL\/sec<\/td>\n<\/tr>\n<\/tfoot>\n<\/table>\n<\/section>\n
\n

Imaging Parameters<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n
Scan Description<\/th>\nAXIAL
DWI<\/th>\n		SAGITTAL
T1<\/th>\n		AXIAL
T2 3MM<\/th>\n		AXIAL
GRE<\/th>\n		Pre
CORONAL
T1<\/th>\n		AXIAL
BLADE DWI<\/th>\n		AXIAL
FLAIR<\/th>\n		Post
CORONAL
T1 Fat Sat<\/th>\n		Post
AXIAL
T1 Fat Sat<\/th>\n		AXIAL
T2 SPACE\/CISS<\/th>\n		Post
AXIAL
T1<\/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\nView Image<\/a>\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\nView Image<\/a>\n<\/th>\n\nView Image<\/a>\n<\/th>\n<\/tr>\n<\/thead>\n
Sequence Name<\/td>\nepse<\/td>\ntir<\/td>\ntseB<\/td>\nfl_r<\/td>\ntse_rr<\/td>\nresolve<\/td>\ntirB<\/td>\ntse_rr<\/td>\ntse_rr<\/td>\nci<\/td>\ntir<\/td>\n<\/tr>\n
Dimension<\/td>\n―<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n3D<\/td>\n2D<\/td>\n<\/tr>\n
Acceleration Mode<\/td>\nGRAPPA<\/td>\nGRAPPA<\/td>\nGRAPPA<\/td>\nNone<\/td>\nGRAPPA<\/td>\nGRAPPA<\/td>\nGRAPPA<\/td>\nGRAPPA<\/td>\nGRAPPA<\/td>\n―<\/td>\nGRAPPA<\/td>\n<\/tr>\n
Acceleration Factor PE<\/td>\n2<\/td>\n2<\/td>\n―<\/td>\n―<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n―<\/td>\n2<\/td>\n<\/tr>\n
Acceleration Factor 3D<\/td>\n―<\/td>\n―<\/td>\n2<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n<\/tr>\n
AutoAlign<\/td>\nHead > Brain<\/td>\nHead > Basis<\/td>\nHead > Brain<\/td>\nHead > Brain<\/td>\nHead > IAC<\/td>\nHead > IAC<\/td>\nHead > Brain<\/td>\nHead > IAC<\/td>\nHead > IAC<\/td>\nHead > IAC<\/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\n\n\n\n\n\n
Scan Description<\/th>\nAXIAL
DWI<\/th>\n		SAGITTAL
T1<\/th>\n		AXIAL
T2 3MM<\/th>\n		AXIAL
GRE<\/th>\n		Pre
CORONAL
T1<\/th>\n		AXIAL
BLADE DWI<\/th>\n		AXIAL
FLAIR<\/th>\n		Post
CORONAL
T1 Fat Sat<\/th>\n		Post
AXIAL
T1 Fat Sat<\/th>\n		AXIAL
T2 SPACE\/CISS<\/th>\n		Post
AXIAL
T1<\/th>\n<\/tr>\n
 <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n<\/tr>\n<\/thead>\n
TR<\/td>\n4900.0 ms<\/td>\n1490.0 ms<\/td>\n5900.0 ms<\/td>\n858.0 ms<\/td>\n640.0 ms<\/td>\n6440.0 ms<\/td>\n8000.0 ms<\/td>\n510.0 ms<\/td>\n510.0 ms<\/td>\n6.2 ms<\/td>\n1800.0 ms<\/td>\n<\/tr>\n
TE<\/td>\n98.00 ms<\/td>\n7.50 ms<\/td>\n105.00 ms<\/td>\n23.90 ms<\/td>\n11.00 ms<\/td>\nTE 1: 66 ms
TE 2: 103 ms<\/td>\n		TE 1: 109.00 ms
TE 2: 2370 ms<\/td>\n		11.00 ms<\/td>\n11.00 ms<\/td>\n2.81 ms<\/td>\nTE 1: 7.50 ms
TE 2: 818 ms<\/td>\n<\/tr>\n
TI<\/td>\n―<\/td>\n688 ms<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n<\/tr>\n
Flip Angle<\/td>\n―<\/td>\n150 deg<\/td>\n150 deg<\/td>\n20 deg<\/td>\n160 deg<\/td>\n180 deg<\/td>\n150 deg<\/td>\n160 deg<\/td>\n160 deg<\/td>\n62 deg<\/td>\n150 deg<\/td>\n<\/tr>\n
Turbo Factor<\/td>\n―<\/td>\n6<\/td>\n23<\/td>\n―<\/td>\n3<\/td>\n―<\/td>\n33<\/td>\n3<\/td>\n3<\/td>\n―<\/td>\n6<\/td>\n<\/tr>\n
Bandwidth<\/td>\n1184 Hz\/Px<\/td>\n240 Hz\/Px<\/td>\n363 Hz\/Px<\/td>\n200 Hz\/Px<\/td>\n190 Hz\/Px<\/td>\n694 Hz\/Px<\/td>\n363 Hz\/Px<\/td>\n190 Hz\/Px<\/td>\n190 Hz\/Px<\/td>\n454 Hz\/Px<\/td>\n240 Hz\/Px<\/td>\n<\/tr>\n
Echo Spacing<\/td>\n1.04 ms<\/td>\n7.46 ms<\/td>\n8.72 ms<\/td>\n―<\/td>\n11.0 ms<\/td>\n0.38 ms<\/td>\n6.42 ms<\/td>\n11.0 ms<\/td>\n11.0 ms<\/td>\n―<\/td>\n7.46 ms<\/td>\n<\/tr>\n
Echo Trains per Slice<\/td>\n―<\/td>\n25<\/td>\n17<\/td>\n―<\/td>\n41<\/td>\n―<\/td>\n12<\/td>\n41<\/td>\n41<\/td>\n―<\/td>\n16<\/td>\n<\/tr>\n
EPI Factor<\/td>\n128<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n75<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n<\/tr>\n
Fat-Water Contrast<\/td>\nFat Saturation<\/td>\nStandard<\/td>\nStandard<\/td>\nStandard<\/td>\nStandard<\/td>\nFat Saturation<\/td>\nStandard<\/td>\nFat Saturation<\/td>\nFat Saturation<\/td>\nStandard<\/td>\nStandard<\/td>\n<\/tr>\n
Fat Saturation<\/td>\nWeak<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\nStrong<\/td>\n―<\/td>\nStrong<\/td>\nStrong<\/td>\n―<\/td>\n―<\/td>\n<\/tr>\n
Gradient Mode<\/td>\nFast<\/td>\nFast<\/td>\nFast<\/td>\nFast<\/td>\nNormal<\/td>\nFast<\/td>\nFast<\/td>\nNormal<\/td>\nNormal<\/td>\nFast<\/td>\nFast<\/td>\n<\/tr>\n
RF Pulse Type<\/td>\nNormal<\/td>\nFast<\/td>\nNormal<\/td>\nFast<\/td>\nNormal<\/td>\nNormal<\/td>\nFast<\/td>\nNormal<\/td>\nNormal<\/td>\nNormal<\/td>\nFast<\/td>\n<\/tr>\n
Asymmetric Echo<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\nOff<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\nAllowed<\/td>\n―<\/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\n
Scan Description<\/th>\nAXIAL
DWI<\/th>\n		SAGITTAL
T1<\/th>\n		AXIAL
T2 3MM<\/th>\n		AXIAL
GRE<\/th>\n		Pre
CORONAL
T1<\/th>\n		AXIAL
BLADE DWI<\/th>\n		AXIAL
FLAIR<\/th>\n		Post
CORONAL
T1 Fat Sat<\/th>\n		Post
AXIAL
T1 Fat Sat<\/th>\n		AXIAL
T2 SPACE\/CISS<\/th>\n		Post
AXIAL
T1<\/th>\n<\/tr>\n
 <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n<\/tr>\n<\/thead>\n
Base Resolution<\/td>\n128<\/td>\n320<\/td>\n320<\/td>\n288<\/td>\n256<\/td>\n150<\/td>\n320<\/td>\n256<\/td>\n256<\/td>\n256<\/td>\n320<\/td>\n<\/tr>\n
Phase Resolution<\/td>\n100%<\/td>\n70%<\/td>\n―<\/td>\n75%<\/td>\n80%<\/td>\n100%<\/td>\n―<\/td>\n80%<\/td>\n80%<\/td>\n100%<\/td>\n70%<\/td>\n<\/tr>\n
Slice Resolution<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n100%<\/td>\n―<\/td>\n<\/tr>\n
Averages<\/td>\n―<\/td>\n1<\/td>\n1<\/td>\n1<\/td>\n3<\/td>\n―<\/td>\n1<\/td>\n3<\/td>\n3<\/td>\n1<\/td>\n2<\/td>\n<\/tr>\n
Concatenations<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n1<\/td>\n1<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n―<\/td>\n2<\/td>\n<\/tr>\n
b-value<\/td>\n0 s\/mm2<\/sup>
1000 s\/mm2<\/sup><\/td>\n		―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n0 s\/mm2<\/sup>
1000 s\/mm2<\/sup><\/td>\n		―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n<\/tr>\n
FoV Read<\/td>\n220 mm<\/td>\n220 mm<\/td>\n220 mm<\/td>\n210 mm<\/td>\n180 mm<\/td>\n220 mm<\/td>\n230 mm<\/td>\n180 mm<\/td>\n180 mm<\/td>\n180 mm<\/td>\n220 mm<\/td>\n<\/tr>\n
FoV Phase<\/td>\n100%<\/td>\n100%<\/td>\n100%<\/td>\n100%<\/td>\n100%<\/td>\n100%<\/td>\n100%<\/td>\n100%<\/td>\n100%<\/td>\n100%<\/td>\n81%<\/td>\n<\/tr>\n
Phase Encoding Dir.<\/td>\nA >> P<\/td>\nA >> P<\/td>\nR >> L<\/td>\nA >> P<\/td>\nR >> L<\/td>\nA >> P<\/td>\nR >> L<\/td>\nR >> L<\/td>\nR >> L<\/td>\nR >> L<\/td>\nR >> L<\/td>\n<\/tr>\n
Slice Oversampling<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n39%<\/td>\n―<\/td>\n<\/tr>\n
Phase Oversampling<\/td>\n0%<\/td>\n20%<\/td>\n25%<\/td>\n0%<\/td>\n20%<\/td>\n0%<\/td>\n38%<\/td>\n20%<\/td>\n20%<\/td>\n25%<\/td>\n0%<\/td>\n<\/tr>\n
Slice Partial Fourier<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\n―<\/td>\nOff<\/td>\n―<\/td>\n<\/tr>\n
Phase Partial Fourier<\/td>\n6\/8<\/td>\nOff<\/td>\n―<\/td>\nOff<\/td>\nOff<\/td>\nOff<\/td>\n―<\/td>\nOff<\/td>\nOff<\/td>\nOff<\/td>\nOff<\/td>\n<\/tr>\n
Flow Compensation<\/td>\n―<\/td>\nNone<\/td>\nNone<\/td>\nOn<\/td>\nRead<\/td>\n―<\/td>\nNone<\/td>\nRead<\/td>\nRead<\/td>\nNone<\/td>\nNone<\/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>\nAXIAL
DWI<\/th>\n		SAGITTAL
T1<\/th>\n		AXIAL
T2 3MM<\/th>\n		AXIAL
GRE<\/th>\n		Pre
CORONAL
T1<\/th>\n		AXIAL
BLADE DWI<\/th>\n		AXIAL
FLAIR<\/th>\n		Post
CORONAL
T1 Fat Sat<\/th>\n		Post
AXIAL
T1 Fat Sat<\/th>\n		AXIAL
T2 SPACE\/CISS<\/th>\n		Post
AXIAL
T1<\/th>\n<\/tr>\n
 <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n <\/th>\n<\/tr>\n<\/thead>\n
Elliptical Filter<\/td>\nOff<\/td>\nOn<\/td>\nOff<\/td>\nOn<\/td>\nOn<\/td>\n―<\/td>\nOff<\/td>\nOn<\/td>\nOn<\/td>\nOn<\/td>\nOn<\/td>\n<\/tr>\n
Normalize<\/td>\nPrescan<\/td>\nPrescan<\/td>\nPrescan<\/td>\nPrescan<\/td>\nPrescan<\/td>\nPrescan<\/td>\nPrescan<\/td>\nPrescan<\/td>\nPrescan<\/td>\nPrescan<\/td>\nPrescan<\/td>\n<\/tr>\n
Distortion Correction<\/td>\nOff<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n2D<\/td>\n<\/tr>\n
Distance Factor<\/td>\n0%<\/td>\n30%<\/td>\n0%<\/td>\n0%<\/td>\n10%<\/td>\n0%<\/td>\n0%<\/td>\n10%<\/td>\n10%<\/td>\n20%<\/td>\n30%<\/td>\n<\/tr>\n
Slice Thickness<\/td>\n5.0 mm<\/td>\n5.0 mm<\/td>\n3.0 mm<\/td>\n5.0 mm<\/td>\n2.0 mm<\/td>\n3.0 mm<\/td>\n5.0 mm<\/td>\n2.0 mm<\/td>\n2.0 mm<\/td>\n0.7 mm<\/td>\n5.0 mm<\/td>\n<\/tr>\n
Slices<\/td>\n30 Slices<\/td>\n25 Slices<\/td>\n55 Slices<\/td>\n30 Slices<\/td>\n15 Slices<\/td>\n20 Slices<\/td>\n30 Slices<\/td>\n15 Slices<\/td>\n15 Slices<\/td>\n52 Slices
per Slab<\/td>\n		24 Slices<\/td>\n<\/tr>\n
Acquisition Time<\/td>\n51 sec<\/td>\n1:19 min<\/td>\n3:34 min<\/td>\n3:07 min<\/td>\n1:21 min<\/td>\n3:34 min<\/td>\n3:30 min<\/td>\n2:09 min<\/td>\n2:09 min<\/td>\n3:45 min<\/td>\n2:00 min<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Print Instructions And Patient Preparation Instructions • This may be a standalone exam for follow-up or done in conjunction with sequences from Routine Adult Brain protocol• Contrast is used for almost all examinations• Can do noncontrast as screening study Position Supine, head first Coil 20 channel Head and Neck coil or better Landmark Glabella 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":[46,44,49],"tags":[],"class_list":["post-4601","page","type-page","status-publish","hentry","category-1-5t","category-siemens","category-specialty-brain"],"_links":{"self":[{"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages\/4601","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=4601"}],"version-history":[{"count":2,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages\/4601\/revisions"}],"predecessor-version":[{"id":5672,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/pages\/4601\/revisions\/5672"}],"wp:attachment":[{"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/media?parent=4601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/categories?post=4601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/protocols.nwforums.com\/index.php\/wp-json\/wp\/v2\/tags?post=4601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}