Liver: Difference between revisions
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Triple phase liver (Art/PV/5 min delayed) | Triple phase liver (Art/PV/5 min delayed) | ||
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1.5 mm B30f, 1.2 mm increment. | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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Bolus tracked as above. | Bolus tracked as above. | ||
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5 min delayed liver and PV Chest, abdomen and pelvis | 5 min delayed liver and PV Chest, abdomen and pelvis | ||
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1.5 mm B30f, 1.2 mm increment. | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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As above | As above | ||
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(No pelvis required unless clinically indicated) | (No pelvis required unless clinically indicated) | ||
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1.5 mm B30f, 1.2 mm increment. | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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ROI placed over aorta, monitoring begins after 10 seconds and bolus tracking triggers scan at 100 HU with a delay of 12 seconds. After arterial scan 30 s delay till PV scan. | ROI placed over aorta, monitoring begins after 10 seconds and bolus tracking triggers scan at 100 HU with a delay of 12 seconds. After arterial scan 30 s delay till PV scan. | ||
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Breast/renal/neuroendocrine/melanoma/sarcoma/lung usually include chest | Breast/renal/neuroendocrine/melanoma/sarcoma/lung usually include chest | ||
|rowspan="2"| | |rowspan="2"| | ||
1.5 mm B30f, 1.2 mm increment. | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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If colorectal, lung, squamous cell, adeno ca. (hypovascular) 65 seconds abdomen and pelvis. | If colorectal, lung, squamous cell, adeno ca. (hypovascular) 65 seconds abdomen and pelvis. | ||
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Art, PV and 5 minute liver | Art, PV and 5 minute liver | ||
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1.5 mm B30f, 1.2 mm increment. | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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MRI preferable (see new protocol for incidental liver lesion pick up). | MRI preferable (see new protocol for incidental liver lesion pick up). | ||
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CT triple phase liver (arterial/portal venous/5 min delayed) | CT triple phase liver (arterial/portal venous/5 min delayed) | ||
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1.5 mm B30f, 1.2 mm increment. | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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Bolus tracked as above. | Bolus tracked as above. | ||
| Line 119: | Line 119: | ||
CT triple phase liver (pre/arterial/portal venous/5 min delayed) | CT triple phase liver (pre/arterial/portal venous/5 min delayed) | ||
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1.5 mm B30f, 1.2 mm increment. | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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Bolus tracked as above. | Bolus tracked as above. | ||
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Aterial, portal venous and delayed phases | Aterial, portal venous and delayed phases | ||
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1.5 mm B30f, 1.2 mm increment. | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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Bolus tracked as above. | Bolus tracked as above. | ||
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|rowspan="2"|Post embolization f/u of liver metastatic deposit | |rowspan="2"|Post embolization f/u of liver metastatic deposit | ||
|rowspan="2"|CT arterial or arterial/PV liver | |rowspan="2"|CT arterial or arterial/PV liver | ||
|rowspan="2"|1.5 mm B30f, 1.2 mm increment. | |rowspan="2"|1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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If colorectal, lung, squamous cell, adeno ca. (hypovascular) 65 seconds abdomen and pelvis. | If colorectal, lung, squamous cell, adeno ca. (hypovascular) 65 seconds abdomen and pelvis. | ||
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Triple phase abdomen | Triple phase abdomen | ||
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1.5 mm B30f, 1.2 mm increment. | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. | ||
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As above | As above | ||
Revision as of 08:30, 17 April 2018
| Indication | Brief description | Slice thickness and reconstruction kernel | Further details of contrast timing/explanation of what the radiographers do | Abbreviation |
|---|---|---|---|---|
|
Cholangiocarcinoma? |
Triple phase liver (Art/PV/5 min delayed) |
1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
Bolus tracked as above. |
Triple phase liver (Art/PV/5 min)
|
|
Staging cholangiocarcinoma |
Appropriate scans according to recent characterisation scan and whatever else is needed e.g. chest and pelvis
| |||
|
Follow up cholangiocarcinoma |
5 min delayed liver and PV Chest, abdomen and pelvis |
1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
As above |
CAP with 5 min delayed liver
|
|
Characterise liver lesion/HCC |
CT triple phase liver Usually do not require pre-contrast unless possible focal fat, etc. Non contrast, arterial, PV and 5 minute delayed liver. (No pelvis required unless clinically indicated) |
1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
ROI placed over aorta, monitoring begins after 10 seconds and bolus tracking triggers scan at 100 HU with a delay of 12 seconds. After arterial scan 30 s delay till PV scan. |
CT Quad/triple Phase Liver
|
|
Hepatocellular carcinoma staging |
Appropriate scans according to recent characterisation scan and whatever else is needed e.g. chest and pelvis
| |||
| Liver metastases | CT liver
Depends on primary site. If colorectal only need PV phase. Breast/renal/neuroendocrine/melanoma/sarcoma/lung usually include chest |
1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
If colorectal, lung, squamous cell, adeno ca. (hypovascular) 65 seconds abdomen and pelvis. |
CT PV liver
|
|
Breast, melanoma, lung: Arterial chest and liver 65 seconds abdomen and pelvis |
CT Art + PV liver
| |||
|
Haemangioma |
CT triple phase liver and delayed Art, PV and 5 minute liver |
1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
MRI preferable (see new protocol for incidental liver lesion pick up). Bolus tracked as above. |
CT triple phase liver
|
|
Post TACE |
CT triple phase liver (arterial/portal venous/5 min delayed) |
1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
Bolus tracked as above. |
CT triple phase liver
|
|
Post RFA |
CT triple phase liver (pre/arterial/portal venous/5 min delayed) |
1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
Bolus tracked as above. |
CT quad phase liver
|
|
Post embolisation f/u of HCC |
Aterial, portal venous and delayed phases |
1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
Bolus tracked as above. |
CT triple phase liver
|
| Post embolization f/u of liver metastatic deposit | CT arterial or arterial/PV liver | 1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
If colorectal, lung, squamous cell, adeno ca. (hypovascular) 65 seconds abdomen and pelvis. |
CT PV liver
|
| Breast, melanoma, lung:
40 seconds chest and liver 65 seconds abdomen and pelvis |
CT art + PV liver
| |||
|
Splenic lesions |
Triple phase abdomen |
1.5 mm B30f, 5 mm B30f, 1.2 mm increment. |
As above |
CT triple phase spleen |