Q.MRI scan is harmless - Justify.

A tomogram is the sectional image produced by a tomography/CT scan.

Tomography is an imaging technique that produces detailed pictures of internal structures of the body by taking images in sections/slices, typically using X-rays combined with computer processing (as in Computed Tomography, CT scan).

During a CT scan, an X-ray source rotates around the patient, and detectors record the amount of radiation passing through the body at many different angles. A computer then reconstructs this data into a two-dimensional cross-sectional image representing a "slice" through the body at a particular level.

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MRI avoids ionising radiation entirely, using magnetism and radio waves instead, which is why it is considered a safe, non-invasive imaging technique.

Magnetic Resonance Imaging (MRI) works by placing the patient in a strong magnetic field, which aligns the hydrogen nuclei (protons) present abundantly in the body's water and fat molecules. A pulse of radio-frequency waves is then applied, temporarily disturbing this alignment; as the protons relax back to their original state, they emit weak radio signals which are detected and processed by a computer to construct detailed images of soft tissues.

Why MRI is considered harmless:

1. It does not use ionising radiation (unlike X-rays or CT scans), so there is no risk of the radiation damaging DNA or causing cancer from cumulative radiation exposure.
2. The magnetic fields and radio waves used have not been shown to cause any tissue damage at the intensities used clinically.
3. It is a non-invasive procedure — no surgical incision, injection (usually), or exposure to harmful rays is required. …

MRI is harmless because it images the body using a magnetic field and non-ionising radio waves, avoiding the tissue-damaging ionising radiation used in X-ray/CT scans.

Magnetic Resonance Imaging (MRI) works by placing the body in a strong magnetic field and applying radio-frequency waves. These make the hydrogen (proton) nuclei in the body's water and tissues emit signals, which are processed by a computer into detailed images of internal organs.

The radiation used (radio waves) is non-ionising. It does not carry enough energy to knock electrons out of atoms, so it does not ionise or damage cells, tissues or DNA.

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MRI uses magnetism and radio waves, not ionising radiation, so it does not damage living tissue the way X-rays can.

Magnetic Resonance Imaging (MRI) is a diagnostic imaging technique used to visualise internal body structures, especially soft tissues (brain, spinal cord, muscles, joints, internal organs), in great detail.

Why it is considered harmless:

1. No ionising radiation: Unlike X-rays or CT scans, which use ionising radiation capable of damaging DNA and increasing cancer risk with repeated exposure, MRI uses a powerful magnetic field combined with radiofrequency (radio) waves to align and then detect the resonance signals of hydrogen nuclei (protons) in the body's water/fat molecules.
2. Non-ionising energy: Radio waves carry far too little energy to knock electrons out of atoms or break chemical bonds in tissue — they simply cause the aligned protons to briefly resonate and then relax, emitting a detectable signal that a computer reconstructs into an image. This process causes no known tissue damage. …

Unlike X-rays or CT scans, MRI does not use ionising radiation, so it does not cause the cellular or genetic damage associated with ionising radiation, and is considered a safe imaging technique.

Magnetic Resonance Imaging (MRI) is a diagnostic imaging technique that uses a strong magnetic field together with radio-frequency (radio) waves to align and then detect signals from hydrogen nuclei in the body's water and fat molecules, producing detailed images of soft tissues.

Justification that MRI is harmless:

1. MRI does not employ ionising radiation (such as X-rays or gamma rays), unlike CT scans or conventional radiography, which use ionising radiation capable of damaging DNA and increasing cancer risk with repeated exposure.
2. The magnetic field and radio waves used in MRI are non-ionising - they do not have enough energy to remove electrons from atoms or break chemical bonds in tissue. …

Unlike X-ray/CT imaging, MRI does not use ionising radiation — it uses magnetic fields and radio waves, which do not damage biological tissue, making it a safe, non-invasive diagnostic technique.

Magnetic Resonance Imaging (MRI) works by placing the body in a strong magnetic field and applying radio-frequency pulses. Hydrogen protons (abundant in the water/fat of body tissues) align with the magnetic field and, when disturbed by the RF pulse, emit signals as they realign; these signals are computer-processed into detailed cross-sectional images of soft tissues (brain, muscles, ligaments, organs), usually without needing any contrast dye.

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MRI uses magnetic fields and radio waves, not ionising radiation, so it does not damage tissue and is considered harmless.

MRI (Magnetic Resonance Imaging) is a diagnostic imaging technique (Applied Biology / modern diagnostic tools) that produces detailed pictures of internal soft tissues and organs. Its safety is explained as follows:

• It works by placing the body in a strong magnetic field and applying radio-frequency waves; these make the hydrogen protons of body water emit signals that are computer-processed into images.
• Unlike X-rays and CT scans, MRI uses NO ionising radiation. Ionising radiation is what damages DNA and cells, and MRI simply does not produce it.
• The magnetic field and radio waves used are not known to harm living cells, so the scan causes no radiation burns or genetic damage and can be repeated without cumulative risk. …