13.

X- rays are used in 

• ECG

• EEG

• CT- scan

• Endoscopy

X-rays are used in CT-scan (computed tomographic scanning). It uses X-rays but employs a computer for reconstructing the image instead of directly recording it on a photographic film. This technique is used in the diagnosis of diseases of brain, spinal cord, chest, etc. It is also useful in detecting tumors.

ECG or Electrocardiogram is a medical test that detects cardiac (heart) abnormalities by measuring the electrical activity generated by the heart as it contracts.

EEg or Electroencephalogram is a non- invasive test that records electrical patterns in your brain. It is used to help diagnose conditions such as seizures, epilepsy, head injuries, dizziness etc.

Endoscopy helps in identifying inflammation, ulcers and tumors. It is more accurate than X- rays for detecting abnormal growths such as cancer and for examining the inside of the upper digestive system.