Number

Medical number 정리

1

• Low dose chest CT가 1-1.5mSv, chest PA: 0.1mSv(=10 days natural exposure), flight(0.01mSv)
• 1cm
  • osteochondroma cartiligious cap(>1cm이면 malignant 가능성)
  • main P duct>=1cm 이면 high risk stigmata in IPMN
• 1mm: The average IMT value for each common carotid artery >1 mm is taken as abnormal

2

• ulnar negative variance/ulnar positive variance: >2.5mm

3

• 3mm: GB wall, urinary bladder wall.

4

• adrenal incidentaloma: lesions > 4 cm are more likely to be either metastases or adrenocortical carcinomas.

5

• 5mm
  • BESS(IHW)
  • main p-duct >5mm; worrisom feature in IPMN

6

• toxic megacolon: diameter 6cm

7

• <7mm: narrowed acromiohumeral interval, coracohumeral interval

14

• 14mm>: incomplete discoid meniscus

20

• RECIST PD

30

• RECIST PR

33

• PVL occurs most commonly in premature infants born at less than 33 weeks gestation (38% PVL)
  • less than Very low birth weight(45% PVL).

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