Military roentgenology / War Department.

Date:
[1944]
Catalogue details

Licence: Public Domain Mark

Credit: Military roentgenology / War Department. Source: Wellcome Collection.

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    chassis so as to provide for standing roentgenoscopy. (4) The tube housing itself may be rotated to a position so as to provide for chest studies with focal film distances as great or greater than 6 feet. (5) In the position for conventional horizontal roentgenography, the tube housing may be raised or lowered so as to provide focal film distances varying from 29 inches to as much as 45 inches, the patient lying on a litter at the table-top level. (6) The X-ray tube may be rotated in the hori- zontal plane so as to provide for chest studies of focal film distances as great as 6 feet, the patient lying upon a litter placed upon the floor. d. Foreign body localization. As described in chap- ter 12, two simple auxiliary parts are provided with this unit for adaptation of it to a simple roent- genoscopic method of foreign body localization. 67. DARKROOM TENT, ITEM NO. 96175. a. General. The tent has been designed for usage particularly at mobile hospitals where it is expected that it will be needed both with the mobile operating section and with the hospitalization section. Its design is such that it can be erected indoors in any room (8 by 10 feet in area and 8 feet in height) as well as within a tent or dugout or by itself, in the open. It is therefore quickly adaptable for use in a temporary building or any building taken over for service as an evacuation hospital. It may even serve a purpose at a general hospital, though at this installation it is more likely that substantial dark- room construction will be had. Its design mcludes a two-way adaptation for roentgenoscopy and/or for film processing. It provides for a quick changeover where lightproof conditions are essential. When erected on the outside, very sturdy support of it may be accomplished by weighting apron with turf, or rocks, etc. Additional support may be pro- vided by utilizing auxiliary guy ropes. The guy ropes are not actually included with this item but eyelets have been provided in eaves which extend from the top sides of the tent. It should not be necessary to use these guy rope supports when the tent is erected within another tent or within a room or dugout. b. Assembly. Detailed instructions as to assembly of this tent are appended to the inside of the lid of the chest which accommodates the frame support of the tent. As indicated, assembly of the roof frame should first be accomplished, the outer tentage being placed upon this frame so that the end and sides of it are thrown uppermost. The vertical members are then adjusted to each of the four corners so that they project toward the center of the area covered by the tent. The roof frame should then be elevated by lifting each of the four vertical members. The lower horizontal members should then be fixed and the tiller rope attachments applied and tightened. The sides of the outer tentage should then be lowered 60 and the inner curtain and auxiliary drapes adjusted. The fan for forced ventilation should then be installed in the posterior end gable. This should be inclosed by the zipper to provide for light tightness. When used for roentgenoscopy, the inner curtain should be set forward (the auxiliary drapes being folded), and the zipper of this curtain should be opened so that with the door drapes extended, it will be possible to enter the passageway head first with- out lifting the drapes. For film processing, the inner curtain should be set back (20 inches) and the auxiliary drapes should be extended so as to provide a labyrinth. It is not practical to set up equipment for both roentgenoscopy and film processing in a single tent. These two adaptations are shown in figures 61 and 62. NO. 96215. a. General. This unit has been designed primarily for horizontal roentgenoscopy, horizontal roentgenography and roentgenoscopic localization of foreign bodies. (See figs. 63 and 64.) The equip- ment is so designed that it can be packed into three lightweight chests for ease In transportation across difficult terrain. The packing arrangement is ingeniously provided for in order to accommodate all the component parts of the equipment. To simplify assembly printed identifications and color codes are on the parts. The table is so developed that it may be utilized in conjunction with Item No. 96085. The unit consists of the table component, shockproof head and supporting hanger, control, and automatic protective and auxiliary devices. A spare parts compartment for tools and miscellaneous parts are provided in the control unit. A spare tube is also provided as a component of the unit. For roent- genoscopy and foreign body localization, a fluoro- dial together with necessary accessories are included. In the event it is desired to accomplish roent- genoscopy without the field tent a daylight hood may be attached to the fluoroscopic screen staging. In addition, a wafer grid accompanies the unit and normally it is located in a slot beneath the fluoro- scopic screen. b. Components. The generating circuit of the unit may be connected to 100-130 or 200-240 volts, 50-60 cycle, a-c. (See par. 53.) The control is com- pact and it contains all the features incorporated into Item No. 96085 with modifications and refine- ments. (See par. 80.) The shockproof head includes the tube, high tension transformer, and filament transformer immersed in oil. This arrangement obviates the necessity for shockproof cables. In- corporated within the head is the oil impeller and air circulating motors. In addition, it permits the placement of the shockproof components into one insulated head. The X-ray tube of this unit is accommodated in a separate compartment within ——
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