Siemens SOMATOM Sensation 16 Benutzerhandbuch

SOMATOM Sensation 16

Application Guide

Routine Protocols

Software Version A50

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

Overview

General 8

Children 24

Head 70

Neck 86

Shoulder 94

Thorax 98

Abdomen 112

Pelvis 126

Spine 132

Extremities 138

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

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

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

Content

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

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

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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