1. CT SCAN,CTA AND MRI AT NEUROHOSPITAL,BIRATNAGAR Dr. Roshan Koirala MBBS,MD

2. TOSHIBA –ACTIVION 16

3. Recent changes----- Toshiba 16 slice scanning system: Fast advanced technique with 3 steps Ready-Set-Go……………. 1.ready-select the scan region 2.Set- perform scan planning 3.Go- start scanning

4. Performance- General CT scan-Head neck abdomen chest Bone –e.g.. spine leg- 3D reconstruction CTA-Brain,periphery Virtual bronchoscopy Virtual colonoscopy Endoscopic view of the arteries CT-IVU CT-diffusion imaging-CVA cases(Infarction)

5. Advantages of CT scan- Comprehensiveness- record images of bones, soft tissues and vessels at the same time. Speed-Faster than MRI-trauma cases,children Cheaper than MRI Bony structures and calcifications seen better. Easy availability than MRI

6. CT ANGIOGRAPHY Minimally invasive medical test to produce pictures of blood vessels throughout the body. CTA-Examination of blood vessels in- Brain Abdomen-kidneys, liver Pelvis Lung, heart and neck

7. Uses of CTA Aneurysms Atherosclerosis A-V malformation Prepare for renal transplant-renal artery CTA Stent implant evaluation Traumatic injury to vesssels in neck,abdomen and limbs Aortic dissection

8. Coronary artery aniography Pulmonary artery embolism Mapping of vasculatures in vascular brain tumors