Siemens SOMATOM Sensation 16 Guía del usuario
SOMATOM Sensation 16
Application Guide
Routine Protocols
Software Version A50
2
The information presented in this application guide
is for illustration only and is not intended to be relied
upon by the reader for instruction as to the practice
of medicine Any health care practitioner reading this
information is reminded that they must use their own
learning, training and expertise in dealing with their
individual patients
This material does not substitute for that duty and is
not intended by Siemens Medical Solutions Inc , to
be used for any purpose in that regard The drugs and
doses mentioned herein were specified to the best
of our knowledge We assume no responsibility whats-
over for the correctness of this information
Variations may prove necessary for individual patients
The treating physician bears the sole responsibility
for all of the parameters selected The pertaining oper-
ating instructions must always be strictly followed
when operating the SOMATOM Sensation 16 The
statutory source for the technical data are the corres-
ponding data sheets
To improve future versions of this application guide,
we would highly appreciate your questions, suggestions
and comments
Please contact us:
CT Application Hotline:
Tel no +49-9191-18 80 88 (outside Germany)
0130-18 53 91 (in Germany)
Fax no +49-9191-18 99 98
email: somatom examinationprotocol@siemens com
We express our sincere gratitude to the many customers
who contributed valuable input In addition I would like
to stress at this point that the SOMATOM Sensation 16
Application Guide is based very much on the other
SOMATOM Application Guides which have been written
by Dr Xiao-Yan Chen and Loke-Gie Haw
Special thanks to Dr med Martin Heuschmid,
Universitätsklinikum Tübingen
Editor: Bettina Klingemann
3
3
Overview
General 8
Children 24
Head 70
Neck 86
Shoulder 94
Thorax 98
Abdomen 112
Pelvis 126
Spine 132
Extremities 138
4
Content
General 8
· Concept 8
· Scan Set Up 9
· Scan and Reconstruction 9
– Slice Collimation and Slice Width 9
– Pitch 11
– Recon Job 11
– Kernel 12
– Image Filter 12
· Effective mAs 13
· Dose Information 14
– CARE Dose 17
– How Does It Work 17
· Workflow 19
– Auto Load in 3D and
Postprocessing Presets 19
· Contrast Medium IV Injection 20
· How to Create your own Scan Protocols 21
Children 24
· Overview 24
· Hints in General 26
· Head Spi 30
· HeadSeq 32
· SinusRoutine 34
· SinusMPR 36
· InnerEarSeq 38
· InnerEarSpi 40
· HeadAngio 42
· NeckRoutine 44
· CarotidCTA 46
· NeonateBody 48
· ChestRoutine 50
· ChestCombi 52
· ThoraxSeqHR 54
· AbdPelRoutine 56
· AbdCTA 58
· SpineSpiral 60
· SpineMPR 62
· ExtremitySpiral 64
· ExtremityUHRSeq 66
· ExtremityUHRSpi 68
5
Content
Head 70
· Overview 70
· Hints in General 71
· AngioHead 72
· AngioThinSlice 74
· HeadSeq 76
· HeadSpi 78
· InnerEarSeq 80
· InnerEarSpi 82
· OrbiSinusSpi 84
Neck 86
· Overview 86
· Hints in General 87
· AngioCarotid 88
· NeckRoutine 90
· ThinSliceSpi 92
Shoulder 94
· Overview 94
· Hints in General 95
· ShoulderSpi 96
Thorax 98
· Overview 98
· Hints in General 99
· LungLowDose 100
· PulmonaryEmboli 102
· ThoraxCombi 104
· ThoraxRoutine 106
· ThoraxHiRes 108
· ThoraxSeqHiRes 110
Abdomen 112
· Overview 112
· Hints in General 113
· AbdRoutine 116
· AbdThinSlice 118
· AbdMultiPhase 120
· AngioFast 122
· AngioRoutine 124
6
Content
Pelvis 126
· Overview 126
· Hints in General 127
· HipSpi 128
· PelvisRoutine 130
Spine 132
· Overview 132
· Hints in General 133
· RoutineSeq 134
· ObeseSeq 135
· SpineSpi 136
· ThinSliceSpi 137
Extremities 138
· Overview 138
· Hints in General 139
· AngioRunOff 140
· CombiSpi 142
· ExtrUHRSeq 144
· ExtrUHRSpi 146
7
Content
8
General
Concept
The scan protocols for adult are defined according
to body regions – Head, Neck, Shoulder, Thorax,
Abdo en, Spine, Pelvis, Extre ities.
The pediatric scan protocols are defined under the
folder “Children“.
The protocols for special applications are defined
under “Special“ (please refer to the Application Guide
for Special applications)
The general concept is as follows:
“Fast“: uses 1 5 mm slice collimation and a higher
pitch for fast acquisition for CT Angios or trauma
cases
“Routine“: uses either 0 75 mm or 1 5 mm slice colli-
mation depending on the region of interest for routine
studies
“ThinSlice“: uses 0 75 mm slice collimation for thin
slice studies
“HiRes“: uses 0,75 mm slice collimation and rotation
time of 0 75 s for High-resolution studies
“UHR“: uses a 0 75 mm slice collimation in Spiral mode
and a 0 6 mm slice collimation in Sequence mode,
a rotation time of 0 75 s and a scan FOV of 250 mm for
ultra-high resolution studies
“Co bi“: uses 0 75 mm as slice collimation and
reconstruct images as both thinner slice width for HiRes
or CTA and thicker slice width for soft tissue studies
“Seq“: stands for Sequence E g “HeadSeq“ means the
sequence mode for the head; “Spi“ stands for “Spiral“
E g “HeadSpi“ means the spiral mode for the head
9
General
Scan Set Up
Scans can be simply set up by selecting a predefined
examination protocol To repeat any mode, just click
the chronicle with the right mouse button for “repeat”.
To delete it, select “cut“. Each chronicle is rewriteable
before “load“.
Multiple ranges can be run either automatically with
“auto range“, or separately with a “pause” in between
Scan and Reconstruction
Slice Colli ation and Slice Width
Slice collimation is the slice thickness collimated by the
tube collimator, which determines the Z-coverage per
rotation In multislice CT, this is divided by the number
of active detector channels (e g 16 x 0 75 mm)
Slice width is the true thickness of the reconstructed
image
With the SOMATOM Sensation 16, you select the slice
collimation together with the slice width desired, the
slice width is independent of pitch and algorithm, i e
what you select is always what you get Actually, you
do not need to care about the algorithm any more; the
software does it for you
On the SOMATOM Sensation 16 some slice widths
are marked as “fast” (blue background) These images
will be reconstructed with highest performance (up
to 6-10 images per second) All others will be recon-
structed with up to 3 images per second
The reconstruction time depends on slice collimation
and the reconstructed slice width To get the fast
performance, slice width has to be at least 3 times the
slice collimation
10
General
During scanning the user normally will get “Real time”
reconstructed images in full image quality, if the “fast”
slice has been selected
In some cases – this depends also on Scan range, Feed/
Rotation and Reconstruction increment – the Recon
icon on the chronicle will be labeled with “RT” This indi-
cates the Real time display of images during scanning
The Real time displayed image series has to be recon-
structed afterwards
The following tables show you the possibilities of image
reconstruction in spiral and sequential scanning
Slice Colli ation and Slice Width for Spiral Mode
12*/16** x 0 75 mm 0 75, 1, 1 5, 2, 3, 4, 5, 6, 7,
8, 10 mm
12*/16** x 1 5 mm 2, 3, 4, 5, 6, 7, 8, 10 mm
Cardio Spiral Modes
12 x 0 75 mm 0 75, 1 0, 1 5, 2,3 mm
12 x 1 5 mm 2, 3, 4, 5 mm
Slice Colli ation and Slice Width for
Sequence Mode
12 x 0 75 mm 0 75, 1 5, 3, 4 5, 9 mm
12 x 1 5 mm 1 5, 3, 4 5, 6, 9 mm
2 x 5 mm 5, 10 mm
Perfusion Modes
12 x 1 5 mm 6, 9, 18 mm
16 x 1 5 mm 12mm
ECG triggered Modes
12 x 0 75 mm 0 75, 1 5, 3 mm
12 x 1 5 mm 1 5, 3, 6 mm
UHR Modes
2 x 0 6 mm 0 6 mm
2 x 1 mm 1, 2 mm
* For all Spiral Modes using 0.42 sec or 0.75 sec
Rotation Time.
** For all Spiral Modes using a 0.5, .0 or .5 sec
Rotation Time (exception : Cardio Protocols).
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