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Advantage and disadvantages of digital subtraction angiography?
a
What technique creates a three-dimensional dynamic image of blood vessels?
What technique creates a three dimensional dynamic image of blood vessels
Difference between angiography and Digital subtraction angiography?
In digital subtraction angiography (DSA), an image is obtained prior to the introduction of the radio-opaque contrast medium. This image is then digitally "subtracted" by turning it into a "negative" and then superimposing the image onto images acquired after the injection of contrast. This theoretically results in everything but the image of contrast within the vessel being subtracted, or removed, leaving a clearer picture. Often due to patient movement, breathing etc, the two images do not exactly superimpose and some residual shadow of the surrounding structures may be visible.
What digital angiography uses video and computer assisted enhancement of images obtained with conventional angiography?
substraction
What is the medical term meaning X-ray imaging of heart and vessels?
Angiography is an x-ray imaging technique usually used to image hearts and vessels. New imaging techniques are also available for the same purpose, for example, CT angiography and MR angiography.
What is the chief limitation to the use of digital techniques?
what are the chief limitations to the use of digital techniques
Why subtractor IC is not available?
The operation of subtraction is just the inverse of addition, if you can do one you can do the other. BTW, are you thinking analog or digital IC? If digital there are ALU IC chips that do both, depending ..
What is an angiographic record?
An angiographic record is a visual or digital documentation of blood vessels or organs taken during an angiography procedure. It helps doctors diagnose conditions like blockages or abnormalities in the blood vessels.
Why iodine is use in DSA?
A form of digital radiography that delineates blood vessels by subtracting a digitized tissue background image from an image of tissue injected with an intravascular contrast material with a high content of iodine that attenuates x-rays. Abbreviated DSA.
What are some limitations of digital recording?
Digital recording can suffer from limitations such as quantization noise, which occurs when an analog signal is approximated in discrete steps, potentially leading to a loss of audio fidelity. Additionally, digital formats can be susceptible to data corruption and loss due to hardware failures or file compatibility issues. Furthermore, the reliance on technology means that digital recordings may become obsolete as formats evolve, necessitating ongoing efforts to preserve and migrate data. Lastly, digital recordings often require significant storage space and management, which can be a challenge for large projects.
What are some key challenges that organizations face during the process of digital transformation?
Absence of clear strategy. Shifting customer expectations. Emerging digital skill shortage. Financial limitations and concerns Poor data handling.
Why do you need test specifications in digital multimeters?
because it might output the wrong answer if not used in the right range/may be faulty/basically knowing its limitations
