InterviewUp – Job Interview Questions and Answers – What is Radiofrequency Ablation of Liver Tumors?

December 01, 2008

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What is Radiofrequency Ablation of Liver Tumors?

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Asked By: Anonymous

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Radiofrequency Ablation is a special needle electrode is placed in the tumor under the guidance of an imaging method such as ultrasound or computed tomography (CT) scanning. A radiofrequency current then is passed through the electrode to heat the tumor tissue near the needle tip and ablate-or eliminate-it. The heat from radiofrequency energy also closes up small blood vessels, thereby minimizing the risk of bleeding. In general, radiofrequency ablation causes only minimal discomfort and may be done as an outpatient procedure without general anesthesia. Admission to the hospital is not usually necessary.

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radiology, Radiofrequency Ablation, needle electrode, tumor, liver, ultrasound, computed tomography, blood vessels

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toxicology

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Toxicologist

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What is S9 Fraction?

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Asked By: lelet03 |

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It is supernatant fraction obtained from an organ (usually liver) homogenate by centrifuging at 9000 g for 20 minutes in a suitable medium; this fraction contains cytosol and microsomes.

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Sunday, April 27, 2008

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toxicology

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Toxicologist

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156

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What is it in myself that makes me confident to be a doctor?

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Asked By: BenjaminTake... |

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Monday, September 24, 2007

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doctor, confident, inside, makes, me, what, is, it, in, that, to, be

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IMU (International Medical School) Malaysia

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Medical school student

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dk123

Wednesday, March 19, 2008 6:27 AM

nice comment

thingMaster

Tuesday, October 23, 2007 1:52 PM

you are overconfident. you will probably kill many patients, but drive a nice car.

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What is proton therapy and how is it used?

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Protons are atoms that carry a positive charge. Just as x-rays are used to treat both benign and malignant tumors, a beam of protons can be used to radiate tumors in the same way. There is essentially no biological difference between x-ray and protons, except that protons release most of their energy when they hit the tumor and deliver no exit dose beyond the tumor boundary. Therefore, the dose of radiation conforms to the tumor better and there is less damage to healthy tissue. As a result, the treating physician (a radiation oncologist) can give an even greater dose to the tumor while minimizing unwanted side effects. This is especially important when treating children, because it reduces radiation to growing and developing tissues.

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Wednesday, September 19, 2007

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atoms, tissue, tumor, proton therapy, radiation, positive, x-rays, radiation oncologist

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What is the use of a gamma knife?

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Asked By: Anonymous |

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The gamma knife and its associated computerized treatment planning software enable physicians to locate and irradiate relatively small targets in the head (mostly inside the brain) with extremely high precision. Intense doses of radiation can be given to the targeted area(s) while largely sparing the surrounding tissues. The gamma knife can be used for a wide variety of problems. For example, it can be used to treat selected cthat arise in or spread to the brain (primary brain tumors or metastatic tumors), benign brain tumors (meningiomas, pituitary adenomas, acoustic neuromas), blood vessel defects (arterio-venous malformations) and functional problems (trigeminal neuralgia). Possible future uses are being evaluated for epilepsy and Parkinson's disease.

The gamma knife loses its ability to spare surrounding normal tissues as the number of targets increases, is not suitable for large targets (larger than three to four centimeters in size) and is not used for targets outside of the head.

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Wednesday, September 19, 2007

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radiology, tissue, gamma knife, small target, computerized treatment, benign brain tumors, blood vessel defects

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