Radiation leakage study of Theratron 780C Cobalt 60 source head

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DOI: 10.13140/2.1.2341.9846 · Available from: Ramesh Chandra Tiwari, Sep 28, 2015
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    ABSTRACT: For 15 years a forked flap has been used for columella reconstruction in primary repair of the bilateral cleft lip nose. With the adolescent growth spurt, three unfavorable features have become apparent: (1) the columella may grow too long and the nostrils too large, (2) often the nasal tip remains broad, and (3) there is a drift of the columellar base and the lip-columellar angle is transgressed by scar. This procedure has therefore been discontinued. A new treatment plan is presented in which the columella is reconstructed from tissues in the splayed-out nasal tip.
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