File:The American journal of roentgenology, radium therapy and nuclear medicine (1906) (14755038894).jpg

Identifier: americanjournroen09ameruoft (find matches)
Title: The American journal of roentgenology, radium therapy and nuclear medicine
Year: 1906 (1900s)
Authors: American Radium Society American Roentgen Ray Society
Subjects: Radiotherapy X-rays
Publisher: Springfield, Ill. C.C. Thomas
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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target distance,and a full skin unit is administered. Adultheads with a circumference of 22 or moreinches may rarely require ia4 skin units oreven a larger dose. We have never foundit necessary to use a skin-target distancegreater than 8 inches; nor have we everfound it necessary or advisable to useinstead of 5 areas as advised by the Ger-mans. The spark-gap length is 6 inches, so -48 Time-Saving Devices for the Roentgen-Ray Treatment of Ringworm that, even in very small heads, the distancebetween patient and tube terminals isgreater than the length of the spark-gap. It is possible to construct an instrumentpossessing adjustable joints so that oneinstrument can be adjusted to a head ofany size. To do so, however, invites behavior of the patient. It is exasperatingto a busy physician to waste a half-hourwith a refractory child preparing the headfor treatment. Furthermore, this fussingmakes an apprehensive child so nervousthat the treatment can be given only withconsiderable difficulty.
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Fig. 2. Tinea-marker (home-made variety) placed inproper position on scalp. inaccuracy and the adjustments wouldrequire as much time as it would take tomark out the scalp by the old method. Wegreatly prefer a set of four markers—threefor children and one for adults. A very skilful physician or techniciancan work with surprising accuracy withoutthe aid of the Kienboeck-Adamson pointsand lines, but to do so is to take an unnec-essarj and unjustifiable risk. One shouldnever fail to use or do anything that addsto accuracy, certaintj and safety in x-raywork. Alter the scalp hair has been closelyclipped, it requires from ten to thirtyminutes to mark out a scalp by the oldmethod. The time consumed will dependupon the skill of the operator, the shapeand size of the head, ami, above all, the Fig. 3. After the scalp has been mapped out with thetinea-marker and an indelible pencil, and the markerremoved. It requires not more than sixty or ninetyseconds to map out the scalp with the tineamarker

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