. Radiotherapy and phototherapy : including radium and high-frequency currents, their medical and surgical applications in diagnosis and treatment ; for students and practitioners . OUS CONDITIONS OFTHE HUMAN BODY. The position of the patient during an examination or themaking of a radiographic record should be immovable. Theimportance of this is made evident in any attempt to makecomparisons between the conditions in different patients andconditions in the sarne patient at different times. To accom-plish this, the simplest way is that suggested by Williams, viz.,a canvas cot, sufficiently lar
. Radiotherapy and phototherapy : including radium and high-frequency currents, their medical and surgical applications in diagnosis and treatment ; for students and practitioners . OUS CONDITIONS OFTHE HUMAN BODY. The position of the patient during an examination or themaking of a radiographic record should be immovable. Theimportance of this is made evident in any attempt to makecomparisons between the conditions in different patients andconditions in the sarne patient at different times. To accom-plish this, the simplest way is that suggested by Williams, viz.,a canvas cot, sufficiently large to support the body comfort-ably, and of a height that will permit of tubes being placedunder it at the proper distances for the different require-ments. Plates may be placed upon any portion of theanatomy it is desired to make a record of, and screenexaminations may be made with fair satisfaction fromabove or below the table. An ordinary hospital stretchersupported upon two carpenters horses will answer thesame purpose. METHODS OF EXAMINING THE HUMAN BODY 115 Owing, however, to the fixed height of the table and theabsence of any lateral or angular adjustments, it is very. difficult and troublesome to make any examinations of thepatient at any distance, or at any angle other than at rightangles to the anteroposterior diameter of the body. To 116 GENERAL CONSIDERATIOXS UPON RADIOLOGY overcome these difficulties and render all examinations morefacile, several tables, more or less elaborate and complicated,have been placed upon the market. The Queen radiograph table is a good example of auniversal table. The table is jointed in the middle so thatthe patient can be placed in a flexed position, and examinedwith great ease in various directions. The most importantfeature is the arrangement of the plate holders, allowingthe plates to be removed and replaced at will without inthe least disturbing the position of the patient. Thisfacilitates the making of two exposures wherever it is
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