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Medical Physicist

Job Code


Basic Function

Under the direction of the Supervisor of the Imaging Support Unit, the employee will augment the existing diagnostic medical physics support services being provided to ensure safe use of JHAH diagnostic x-ray emitting devices, primarily in Radiology, but may also include Urology, Catheter Lab and Dentistry. This would include but not be limited to: equipment procurement documentation development, modality acceptance testing, quality control program development and annual testing, modality accreditation program implementation, equipment imaging chain troubleshooting with vendor service engineers and onsite clinical engineers, image/dose optimization studies, patient dosimetry measurements and Radiology staff technical development. The candidate could also be expected to contribute some of his time to medical physics support services in Nuclear Medicine, in addition to, providing consultative services to JHAH designated facility clinical sites.


The employee will be based at the Johns Hopkins Aramco Healthcare (JHAH) Dhahran facility within Radiology Imaging Department of the Medical & Technical Support Services Department. On occasion the employee may be required to also travel to the district facilities (Ras Tanura, Al-Hasa, Abqaiq and Udhailiyah), remote clinics (Haradh, Tanajib, Shaybah and Khurais) and JHAH designated facilities. The employee will work as a Senior Medical Physicist during regular working hours and may on occasion provide after hour coverage as well. Hence, the work hours will be mandated to meet the operational needs as directed by Radiology management.

Principal Contacts

The employee’s primary contacts will be with all staff within Radiology Imaging department and Radiology Imaging Division, in addition to other JHAH medical staff that is responsible for safe use of x-ray emitting devices. Per operational demand the employee may also be required to interact with IT, clinical engineering unit, Agfa onsite clinical engineers, Radiology PACS administrators, imaging equipment vendor service engineers, medical and facility services staff and/or other services’ key personnel. On occasion, the need may also arise to communicate with JHAH medical designated facility personnel, tele-radiology vendor contact personnel and the public.

Principal Duties
  1. Perform acceptance testing, calibration and annual safety surveys of imaging equipment (e.g.: CT, ultrasound, mammography, fixed and portable general radiography, fixed and portable fluoroscopy, angiography suites, lithotripsy, dentistry and cath. lab suites), most of which use flat panel receptor technology.
  2. Perform acceptance testing and calibration of auxiliary devices (e.g.: workstation display monitors, CR digitizers, etc.).
  3. Develop, implement and supervise modality quality control programs.
  4. Participate in modality imaging chain troubleshooting (working with vendor service engineers and onsite clinical engineers).
  5. Perform image/dose optimization studies.
  6. Teaching and presentation of continuing education programs for radiology residents and technologists, graduate students, physicians, nurses, ancillary personnel and other staff.
  7. Assist in the Radiology safety program
  • Masters of Science in Physics with sub-specialty in Medical Physics or Masters of Science degree in Medical Physics.
  • PhD in relevant field is preferred.
  • Up to 7 years of experience in relevant field
  • Graduate study academic knowledge of patient exposure measurements.
  • Graduate study academic knowledge of image processing.
  • Graduate study academic knowledge of digital radiography, fluoroscopy and mammography technology.
  • Graduate study academic knowledge of CT and ultrasound technology.
  • Graduate study academic knowledge of SPECT/CT, PET/CT, dose calibrators, thyroid uptake units and gamma cameras (preferred).
  • Graduate study academic knowledge of MRI (preferred).
  • Comprehensive working knowledge of computer science and networking (preferred).
Certifications/Other requirements as applicable
  • Strong English language writing and verbal communication skills.
  • Self-motivated with the ability to work with minimal supervision.
  • A logical and inquisitive mind with excellent analytical skills.
  • Good team working abilities.