What is a radiographic technique chart?

What is a radiographic technique chart?

Technique charts are tables that contain settings for selection on the x-ray control for a specific anatomical part. These factors control the amount of radiation delivered to the patient and to the film.

How do you take an equine radiograph?

Radiographic Views The horse should be positioned with both hind limbs fully weight-bearing with the limb to be imaged slightly caudal to the contralateral limb (Figs. 1–4). The x-ray beam should be directed horizontally, cen- tered on the femorotibial joint, caudal and distal to the apex of the patella.

What is Sante’s rule?

Santes’ rule: Calculation for determining an approximate amount of kilovoltage (kVp) necessary for a given anatomic area on the basis of measurement and the grid being used: (2 × tissue thickness in cm) + source-image distance + grid factor = kVp.

How many views are normally required when Radiographing an equine joint?

3 routine views are needed: the DV, the lateral, and the craniocaudal. Adhesive tape or a radiolucent plastic box. A few minutes prior to making the exposure, turn the patient on its back.

What is the 15 rule in radiology?

The 15% rule states that changing the kVp by 15% has the same effect as doubling the mAs, or reducing the mAs by 50%; for example, increasing the kVp from 82 to 94 (15%) produces the same exposure to the IR as increasing the mAs from 10 to 20. A 15% increase in kVp has the same effect as doubling the mAs.

What is the purpose of a technique chart?

What is the purpose of a technique chart? To ensure consistent image quality & to reduce repeats due to technique error and, in turn, reduce patient exposure. A technique chart should be established for: Each radiographic tube, even when tubes are located in the same room or share a generator.

What does Dlpmo stand for?

What does DLPMO stand for? Dorsolateral Palmaromedial Oblique.

When performing radiographs of the hoof which of the following should be performed?

When performing radiographs of the hoof, which of the following should be performed? The hoof should be dried. The frog should be packed with clay.

What is kVp and mAs?

* kVp: the power and strength of the x-ray beam (quality of the x-rays). * mAs: the number of x-ray photons produced by the x-ray tube at the setting selected (quantity of x-rays). * time: how long the exposure lasts. Understanding Technique. kVp stands for kilovoltage peak.

How do I calculate kVp?

(measured thickness in centimetres x 2) + 40 = initial kVp For example, if your dog measures 14cm thickness at the 12th rib, the initial kVp should be 68. If your X-ray machine cannot generate the exact kVp required, select the nearest available setting to the one calculated.

Can you XRAY a horses stifle?

The stifle is the highest (most proximal) part of the equine limb that can be x-rayed in a standing horse with conventional radiographic equipment. Even then, this anatomy requires powerful x-ray generators to penetrate the massive musculature at this level.

What is the 10 kVp rule?

A longstanding ‘rule of thumb’ suggests that increasing kVp by 10 whilst halving the time gives similar perceptual image quality when compared to the original exposure factors.

When preparing a technique chart which of the following factors must be considered?

ex 2

Question	Answer
When preparing a technique chart, which of the following factors must be considered?	mAs & kVP, screen speed and grid ratio, and FSS and SID
What position could be used to demonstrate a calcified abdominal aortic aneurysm?	lateral

How do you adjust kVp and mAs?

To maintain exposure to the IR, when increasing the kVp by 15% (kVp × 1.15), divide the original mAs by 2. When decreasing the kVp by 15% (kVp × 0.85), multiply the mAs by 2.

What does Dmplo stand for?

What does DMPLO stand for? Dorsomedial Palmarolateral Oblique.

Where is the cannon bone on a horse?

The carpus is located at the front of the knee and the pisiform is the back of the knee. Below the knee is the cannon bone which is also known as the 3rd metacarpal.

Can you XRAY hoof with shoe on?

Taking the time to examine the foot and prepare it properly will avoid the need, risk, and expense of repeating images and will improve the quality and therefore the interpretation of your radiographic images. Before performing a full series of foot radiographs, it is common practice to recommend removing the shoes.

Does laminitis show up on xray?

The different effects of laminitis can clearly be seen on radiographs, capsular rotation vs phalangeal rotation vs sinking and type 1 vs type 2 laminitis. Fig. 7 Shows an ideal relationship between the dorsal surface of P3 and the dorsal hoof wall for comparison with laminitic changes.

What are the 4 primary exposure factors?

The quantity and quality of the x-ray beam are controlled by four prime factors. These factors are under the direct control of the limited operator. The prime factors of exposure are milliamperage (mA), exposure time (S), kVp, and SID.