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514
Children
Central lines and ports may need to be hand injected or
power injected at a very low flow rate (1 ml/sec.).
PIC lines and 24 gauge (or smaller) lines are usually
hand injected. All of these protocols should be decided
on by your institution’s appropriate personnel.
• Applications with 80 kV: For CTA protocols, the tube
voltage was set to 80 kV and the mAs values were
raised by a factor of 1.5 over the reduced 120 kV val-
ues. This measure roughly reduces the dose again by
a factor of 2. At a lower kV, substances with a high
atomic number (such as iodine) have a significantly
higher CT value (= vascular contrast). Iodine CT val-
ues at 80 kV are about 50% higher than at 120 kV.
80 kV was also used for applications when the low-
est achievable mAs at 120 kV was still higher than
necessary for sufficient noise level (for technical rea-
sons, generators need to operate at a certain mini-
mum current for stable operation). For applications
such as neonate or airway scanning, the low tube
output at 80 kV can be used to further reduce the
dose to the patient.
• To further optimize MPR image quality we recom-
mend that you reduce one or more of the following:
collimation, reconstruction increment and slice
width for image reconstruction.
Needle Size (gauge)
Flow Rate (ml/sec.)
22
1.5
20
2.0 – 3.0
18
3.0 – 5.0
Содержание SOMATOM
Страница 4: ...4 Overview Respiratory Gating 484 Children 508 ...
Страница 5: ...Overview 5 ...
Страница 121: ...Workflow Information 121 ...
Страница 135: ...Contrast Medium 135 ...
Страница 157: ...Application Information 157 Program to define capture options ...
Страница 161: ...Application Information 161 ...
Страница 167: ...Head 167 ...
Страница 183: ...Head 183 ...
Страница 187: ...Head 187 ...
Страница 191: ...Head 191 ...
Страница 195: ...Head 195 ...
Страница 211: ...Neck 211 ...
Страница 217: ...Neck 217 ...
Страница 223: ...Shoulder 223 ...
Страница 239: ...Thorax 239 ...
Страница 249: ...Thorax 249 ...
Страница 269: ...Abdomen 269 ...
Страница 273: ...Abdomen 273 ...
Страница 277: ...Abdomen 277 ...
Страница 287: ...Abdomen 287 ...
Страница 293: ...Abdomen 293 ...
Страница 307: ...Spine 307 ...
Страница 311: ...Spine 311 ...
Страница 321: ...Pelvis 321 ...
Страница 327: ...Pelvis 327 ...
Страница 338: ...338 Upper Extremities Hints For image reconstruction of soft tissue use kernel B30s B31s ...
Страница 339: ...Upper Extremities 339 ...
Страница 342: ...342 Upper Extremities Hint For image reconstruction of soft tissue use kernel B30s B31s ...
Страница 343: ...Upper Extremities 343 ...
Страница 357: ...Lower Extremities 357 ...
Страница 369: ...Vascular 369 ...
Страница 375: ...Vascular 375 ...
Страница 379: ...Vascular 379 ...
Страница 383: ...Vascular 383 ...
Страница 387: ...Vascular 387 ...
Страница 393: ...Vascular 393 ...
Страница 397: ...Vascular 397 ...
Страница 401: ...Vascular 401 ...
Страница 405: ...Vascular 405 ...
Страница 409: ...Vascular 409 ...
Страница 413: ...Vascular 413 ...
Страница 421: ...Specials 421 ...
Страница 423: ...Specials 423 ...
Страница 435: ...Specials 435 ...
Страница 454: ...454 Specials CARE Vision and Biopsy layout for Single image display CARE Vision layout for CAREView large size display ...
Страница 455: ...Specials 455 CARE Vision and Biopsy layout for CAREView equal size display Biopsy two segment ...
Страница 461: ...Specials 461 ...
Страница 469: ...Radiation Therapy 469 ...
Страница 483: ...Radiation Therapy 483 ...
Страница 517: ...Children 517 ...
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