With new development of technology CT MRI diagnosis has become very common and routine investigation for perfect diagnosis and management of patients. Anaesthesia for CT MRI of patients differs from routine anaesthesia management as these patients are taken as an emergency basis. Routine preoperative checkup and preparation is compromised. These patients may be mentally abnormal [cerebral palsy], newborn babies with congenital ,neurological and cardiac defects including TPGA [ transposition of great arteries], hydrocephalous ,meningocoele ,ASD,VSD. All these patients will be very high risk for ASA grade 3 or grade 4 risk for general anaesthesia and may be even for sedation.It is anaesthesia outside operation theatre, so comfortness and availability of expert help and rescuiscitative methods are not accessible and this point makes management of patients even more dangerous.

[1]To study the rate of sucess with only sedation for CT MRI.[2]To study the rate of incidence of adverse events such as [hypoxemia or failed or inadequate or over sedation.[3] to assess quality of scan. The patients in whom sedation was not successful,needed resedation or general anaesthesia for rescanning.[4]Identify the children who needed administering general anaesthesia as first choice for safe and successful complition of procedure.

We have studied requirement of anaesthesia and sedation in 100 patients .This is retrospective study of population of 2 months old to less than 12 yers old patients. Study was conducted over 1 year period and drugs used were mainly pedichloryl [40-50 mg /kg body wt ]orally and combination of inj. fortwin and midazolam in older children. With proper counselling most of patients were managed by sedation method. If MRI was of longer duration, preselected children who were high risk or had failed procedure because of inadequate sedation, proper anaesthetic induction agents were required mainly ketamine and propofol or inhalational agents.Intubation was not needed. Any adverse respiratory,cardiac event ,incidence of nausea and vomiting and failed or inadequate sedation was documented.

[1]In 50% patients scan was done successfully with only sedation.[2] Rate of conversion to general anaesthesia or resedation was more in elder children as compared to smaller children and it was about 10%.[3]Rate of adverse reactions such as hypoxemia was almost 10 % and patients needed supplementation with oxygen and post procedure monitering.[4] High risk patients [ ASA grade 3 or grade 4 ]for general anaesthesia, older children who were uncooperative ,patients with neurological problems, those who required longer duration procedures were given general anaesthesia directly and amountad to total 20% of all patients.

Administering anaesthesia in CT MRI is skillful but sometimes risky.With sedation adverse events such as hypoxemia are common.Elderlychilden, preselected high risk patients should be administered general anaesthesia though it is costly because sometimes it is only available way to make it possible.Movements are less,quality of scan is sedation for CT MRI.Declaration of Consent for Publication and Assignation of Copyright good, procedure starts immediately.General anaesthesia is safe and effective and preffered than administering sedation