Calcification include dystrophic and metastatic calcification.

Which of the following can be the consequences of necrosis? A: Lysis and absorption B: Isolation and elimination C: Organization D: Encapsulation and Calcification

Which of the following conditions can lead to metastatic calcification A: Osteomyelitis B: Bone tumors C: Excessive intake of vitamin D D: Hyperthyroidism E: Hyperparathyroidism

Paratfollicular cells or C cells of thyroid also secrete calcitonin, which has the function of ( ). A: Enhancing osteoblast activity B: Promoting the conversion of bone calcium into blood calcium C: Promoting calcification of bone tissue D: Reducing blood calcium E: Elevating blood calcium

The differential absorption of the x-ray beam by different tissues produces various image density, which on CT scans are measured in Hounsfield units (), which of the following description below is NOT correct: ( ) A: Air is measured -1000 HU B: Fat is measured -120 Hu C: Bone is measured +1000 Hu D: Calcification is measured from 80 to 100 Hu