CT SCAN,CTA AND MRI AT
NEUROHOSPITAL,BIRATNAGAR
Dr. Roshan Koirala
MBBS,MD
TOSHIBA –ACTIVION 16
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.Gostart scanning
Performance•
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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)
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
CT ANGIOGRAPHY
• Minimally invasive medical test to produce
pictures of blood vessels throughout the body.
• CTA-Examination of blood vessels inBrain
Abdomen-kidneys, liver
Pelvis
Lung, heart and neck
Uses of CTA
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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
• Coronary artery aniography
• Pulmonary artery embolism
• Mapping of vasculatures in vascular brain
tumors