Radiology Darkroom

A Darkroom is a completely light-tigh room where personal exposure will process latend image, load and unload x-ray films.

Location

Depending on the department design, it should be centrally sited and serviced by hatch from neighboring conventional or x-ray room

Darkroom should be

• Excluded from wet (damp) or hot areas

• Have water and power supply

• Well Ventilation

Types of darkroom entrance

Typically darkroom requires frequent in and out without admitting white light, special design entrance are needed.

1 Single door

2 Double door

3 Labyrinth door

4 Rotating/Revolving door system

Single door: - precautions need to be taken to prevent light from entering while processing, when more than 1 person is using the room and in cases of accident (you need to over ride the interlock).

Double door: - each door has to be hard in structure and well fitted (to exclude all light when closed). It can be economical and term of space (when the vestibule is small or when door nearest to the darkroom is a sliding door). Interlock can be use as well.

Labyrinth door: - consist of || passages and facing wall, it’s most effective if the interior of the passage, the central baffle and facing portions are painted black.

Rotating/Revolving door system: - in one of the design there is a metal cylinder with an opening in its side for entry/exist. In other to gain entry – step in to the cylinder and rotate manually until the opening is adjacent to the darkroom.

Fire safety: alternate exist doors should be provided and left unobstructed always.

Reference

Fadila and Comr. Muazu, MIT Abdussalam A. Madaki (2019 — 2022) Students’ manual for the processing of Radiographic films. Madaki and Mohammad Moses technical research Nigeria.

Comments

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DARKROOM ILLUMINATION

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WRIST X-RAY

The basic projections are P.A and Lateral ➢ Postero anterior (P.A):- The patient is seated along side the table with the affected side in contact with the cassette. Flexed the elbow joint and the arm is abducted, so that the anterior aspects of the forearm and the palm of the hand should be in contact with the cassette. The fingers are slightly separated to bring the anterior aspects of the wrist in contact to the cassette. Centering point: - Center mid way between the median and lateral styloid process. ➢ Lateral: - from the postero anterior the wrist is rotated externally to bring palm of the hand vertically, the hand is rotated externally slightly further to ensure that the radial and styloid process are superimposed. Centering point: - Center to the lateral styloid process. Radiological consideration, The radiograph should demonstrate the all of the carpal bones clear and part of the metacarpal and forearm. References: MIT. Abdussalam A. Madaki and Cowen A.R (2019) Tutorial on th

RADIOLOGIC TECHNOLOGIST

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