CT Scan Liver enhancement at different delay times.

 

These tables contain the data that is graphed. Each table is for a different weight group.  Inside each table, are columns showing the scan Delay time when liver scanning actually began, and the resulting liver enhancement (which is post-contrast liver density), measured in Hounsfield units.

78-97  kg group  Scans starting at the Abdomen
Delay Time 64.9 65.0 68.0 71.3
Liver Enhancement
in Hounsfield units		 111.2 111.9 111.9 110.4
± 11.2 ± 15.1 ± 11.1 ± 9.0

Total  n=

 178 154 50 43

 

64-77  kg group  Scans starting at the Abdomen
Delay Time 62 64 67 69
Liver Enhancement
in Hounsfield units		 113.7 113.4 112.6 111.1
± 11.7 ± 11.1 ± 11.0 ± 9.6

Total   n=

 205 288 90 59

 

48-63  kg group  Scans starting at the Abdomen
Delay Time 60 63 66
Liver Enhancement
in Hounsfield units		 114.6 114.2 110.1
± 10.7 ± 12.8 ± 10.8

Total  n=

 105 152 77

 

78-97  kg group  Scans starting at the Chest
Delay Time 62.6 64 65 66 67 68 69 70 71 72 73 74 75 76.9
Liver Enhancement
in Hounsfield units		 108.5 111.1 110.6 111.7 112.2 113.3 111.2 109.4 113.8 110.9 109.8 110.5 110.3 111.0
± 14.7 ± 13.1 ± 15.9 ± 11.4 ± 11.7 ± 14.3 ± 11.2 ± 13.3 ± 13.5 ± 10.0 ± 10.6 ± 10.3 ± 12.0 ± 8.0

Total  n=

 12 22 42 62 51 71 63 59 49 31 31 15 17 16

 

64-77  kg group  Scans starting at the Chest
Delay Time 62.7 64 65 66 67 68 69 70 71 72 73 74 75 77.2
Liver Enhancement
in Hounsfield units		 115.6 116.5 117.2 116.6 112.8 114.6 115.6 113.5 113.8 113.9 114.6 115.2 109.8 115.5
± 12.2 ± 12.1 ± 12.1 ± 11.0 ± 12.1 ± 8.8 ± 13.2 ± 11.3 ± 12.7 ± 9.7 ± 12.3 ± 12.7 ± 10.9 ± 9.7

Total  n=

 28 42 81 59 70 78 96 93 57 44 36 17 12 23

 

48-63  kg group  Scans starting at the Chest
Delay Time 62.8 64.7 66 67 68 69 70 71 72.6 75.5 79.6 85.2
Liver Enhancement
in Hounsfield units		 119.0 115.3 114.3 115.5 111.8 113.3 115.1 108.1 112.2 112.6 116.1 107.8
± 10.0 ± 9.9 ± 10.3 ± 10.5 ± 11.3 ± 10.3 ± 8.3 ± 7.5 ± 8.2 ± 6.3 ± 9.4 ± 13.6

Total  n=

 29 67 53 59 61 71 41 21 22 19 15 11

 

38-47  kg group  Scans starting at the Chest
Delay Time 62.8 65.4 67.6 70.6 82.8
Liver Enhancement
in Hounsfield units		 117.7 122.9 117.8 117.3 112.7
± 5.7 ± 11.4 ± 12.1 ± 8.6 ± 8.6

Total  n=

 8 9 14 13 8

 

98-117  kg group  Scans starting at the Chest
Delay Time 63.9 66.6 68.6 70.5 72.3 74.5 80.1 94
Liver Enhancement
in Hounsfield units		 105.8 108.7 105.8 106.9 112.2 110.7 107.3 99.6
± 9.8 ± 10.4 ± 10.5 ± 12.4 ± 12.7 ± 11.2 ± 8.9 ± 7.8

Total  n=

 10 19 18 22 15 13 10 5

 

All weight groups, Scans starting at the Abdomen
Weight category 38-47 kg 48-63 kg 64-77 kg 78-97kg 98-117kg
Dose 70ml 80ml 100ml 120ml 140ml
Liver Hounsfield units 118.3 ± 10.5 114.6 ± 10.7 113.7 ± 11.7 111.5 ± 13.1 106.3 ± 13.3

other info

 n=12 delay=59 n=205 delay=60 n=205 delay=62 n=334 delay=65 n=84 delay=66

 

All weight groups, Scans starting at the Chest
Weight category 38-47 kg 48-63 kg 64-77 kg 78-97kg 98-117kg
Dose 70ml 80ml 100ml 120ml 140ml
Liver Hounsfield units 117.7 ± 10.2 114.2 ± 9.8 114.7 ± 11.5 111.4 ± 12.4 108.2 ± 11.1

other info

 n=49 delay=69.2 n=475 delay=68.9 n=768 delay=68.8 n=572 delay=69.7 n=109 delay=70.7
  The delays listed are the mean "total delay" from start of injection to the start of liver scanning.

back to liver CT scan details

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