Medical Imaging Services cover investigations of patients that provide imaging information for diagnosis, prevention, and treatment of disease; or assessment of health. It includes conventional radiation based diagnostic radiology as well as a wide variety of specialised techniques including Ultrasound scans, Doppler studies, Bone densitometry, CT, MRI, PETCT, SPECT, Radionuclide imaging and therapy etc. These services are essential for patient care and therefore must meet the needs of all patient and the clinical personnel responsible for the care of those patients. These services include arrangement for requisition, choice of appropriate (most informative and cost effective) imaging techniques, patient information, patient consent, patient preparation, patient identification, performance of imaging procedures, interpretation, reporting and advice regarding the result, in addition to the consideration of safety and ethics in diagnostic imaging services. A medical imaging centre must maintain certain standard of services (statutory or otherwise); as well as, strive for continuous improvement in the quality of services they provide. Standards for NABH Accreditation for Medical Imaging Services are thus developed and formulated, they are divided into 6 chapters containing 23 standards and 95 objective elements. These standards provide general guidelines pertaining to all diagnostic imaging services. Specific guidelines for X-ray, Fluoroscopy, USG, CT scan, MR and Nuclear Imaging etc. are then provided separately in the guide book for completeness of the document # There are certain tests routinely performed in diagnostic centres e.g. ECG, EEG, EMG, Nerve conduction etc., but as they are not imaging methods and are performed & reported by technical medical specialist other than radiologists, they are not included in these standards.