Monthly Archives: February 2009

History of Radiation Therapy

Hariette A.W.

Radiation therapy has been in use as a cancer treatment for more than 100 years, with its earliest roots traced from the discovery of x-rays in 1895 by Wilhelm Röntgen. The field of radiation therapy began to grow in the early 1900s largely due to the groundbreaking work of Nobel Prize-winning scientist Marie Curie, who discovered the radioactive elements polonium and radium. This began a new era in medical treatment and research. Radium was used in various forms until the mid-1900s when cobalt and cesium units came into use. Medical linear accelerators have been used to as sources of radiation Click Here To Read More

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Wanted: Licensed Radiologic Technologist/X-ray Technologist

Hariette A.W.

I saw Michel’s, my friend and former classmate, posted bulletin at friendster.com and I sent him a note asking him if he wants me to blog it here; fortunately he’s happy about the offer, so here it is. MEDISENSE LABORATORY CENTER INC. urgently needs a licensed Radiologic Technologist/X-ray Technologist for their Davao branch. What’s good about this is that they offer the following: free accommodation one-way fare in going to Davao, and vacation every three (3) months with free two-way fare (back and forth) For those who are interested, or for more information, you may leave a message here; and Click Here To Read More

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Magnetic Resonance Imaging Notes: Respiratory and Cardiac Gating

Hariette A.W.

Respiratory Gating – the simplest method of eliminating respiratory motion artifact is to suspend respiration entirely though breath hold – respiratory gating and respiratory compensation were utilized because not all patients can hold their breath long enough to acquire adequate images Respiratory Compensation – also known as exorcist, ROPE and COPE – performed through reordered phase encoding – throughout the respiratory cycle, anterior chest wall motion is monitored with pressure transducer that surrounds patient’s chest – phase encoding steps are then reordered to decrease the intensity of respiratory motion artifacts and changes location of the motion artifacts within the data Click Here To Read More

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