Computerized Axial Tomography

Computerized axial tomography (CT; Tables 10.1, 10.2) scans can be performed relatively quickly and tumor calcifications are readily detected (Cohen 1992). CT of the head and orbits should be performed in any patient with suspected cranial bone involvement, and chest CT scans are necessary for evaluating parenchy-mal lung disease. The presence of bony changes on CT at diagnosis is diagnostic of metastatic stage-4 NB, To

Table 10.1. Technique for computerized axial tomography radiation dose

Age (years)

Effective mA

Effective kV

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