How do you measure liver volume on CT?
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In this method, the volume of the liver can be calculated by obtaining the area of each cross-sectional image, multiplying the area by the slice interval to give the slice volume, and summing the volumes of the slices to give the total liver volume.
What is the volume of the liver?
The liver volume corrected for body weight (LV/BW) was 20.2 (19.1–21.3) ml/kg in females and 22.9 (21.5–24.3) ml/kg in males (P < 0.01). Men and women not consuming alcohol had LV of 1602 (1350–1854) ml and 1341 (1233–1449) ml, respectively.
How do you calculate normal liver volume?
BSA was estimated by Du Bois and Du Bois’s equation24: BSA=BW0.425×BH0.725×0.007184. BMI was calculated as weight (kg) divided by height2 (m2).
How do you calculate FLR?
FLR is usually expressed as the ratio of the remnant liver volume (RLV) and the total functioning liver volume (TFLV). The TFLV is calculated using the following formula: total liver volume (TLV)-tumor volume (TV)=TFLV.
What is a volumetric CT scan?
Volumetric computed tomography (VCT) is a technology in which area detectors are used for imaging large volumes of a subject with isotropic imaging resolution. We are experimenting with a prototype VCT scanner that uses flat-panel X-ray detectors and is designed for high-resolution three-dimensional (3D) imaging.
What is normal liver size on CT?
Pfahler (1), in a recent study of liver measurements, demonstrated the average length of the right lobe to be 21.3 cm. and the average thickness 12.8 cm.
What is the size of a normal liver?
By percussion, the mean liver size is 7 cm for women and 10.5 cm for men (Table 94.1). A liver span 2 to 3 cm larger or smaller than these values is considered abnormal. The liver weighs 1200 to 1400 g in the adult woman and 1400 to 1500 g in the adult man.
What is future liver remnant?
Definition of an adequate future liver remnant With regard to the future liver remnant, an FLR ≤20% of total hepatic volume is the strongest predictor of hepatic insufficiency and is thus set as the minimum FLR volume for a healthy non-cirrhotic liver [17].
How is liver remnant future calculated?
The ratio of the future liver remnant volume (FLRV%) was calculated by dividing the FLRV by the TLV (FLRV/TLV) and expressed as %. The estimated future remnant liver function (eFLRF) was calculated by multiplying the future liver remnant volume ratio by the corrected total liver function (eFLRF = FLRV% × TLF).
What are the types of CT scan?
CT Scan Brain/ CT Scan Head. CT Scan Chest (CT Scan Lung) CT Scan Neck. CT Scan Pelvis.
What is the major advantage of volume CT over standard CT imaging?
1. Allows a volume of tissue to be examined rather than individual slices only. 2. Shorter scan times.
How do you Percuss your liver?
Percussion During the Liver Exam The purpose of liver percussion is to measure the liver size. Starting in the midclavicular line at about the 3rd intercostal space, lightly percuss and move down. Percuss inferiorly until dullness denotes the liver’s upper border (usually at 5th intercostal space in MCL).