Spleen normal

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Splenic size is variable depending on age, nutrition, and patient size; normal 12x4x7 cm; splenic volume Apxtransversexsuperior-inferior /2; normal <150g br=""> Acessory spleens are common; failure of fusion, usually <3cm accessory="" br="" don="" enhances="" for="" like="" mistake="" nodes="" round="" spleen="" spleens="" t=""> Lobulations are common; clefts cause lobulations, dont mistake clefts for lacerations or infarcts
10 HU less then liver
Variable enhancements due to the variable circulatory routes through the spleen; white pulp (lyphatic follicles and RE cells); Redpulp (interspersed vascular lakes)
Patterns of enhancement: serpentine, cord like enhancement most common - more pronounced with fast injection rates; exagerated in certain patients - decreased cardiac output or heart failure, splenic vein occlusion, portal hypertension; becomes uniform on delayed scans
Splenic artery anatomy: the average number of branches to the spleen originating 3-13cm from the hilum is between 6 and 12 and is called the distributed pattern
A magistral type of branching consists of a long splenic artery that divides near the hilum into 3 or 4 short terminal branches

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