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Scientist profiles M-R

SRI Profiles

John Rowlands, PhD, FCCPM

Emeritus senior scientist

Sunnybrook Health Sciences Centre
2075 Bayview Avenue
Toronto, ON
M4N 3M5

Phone: 416-769-3139

Education:

  • B.Sc., 1966, physics (first class honours), Leeds University, U.K.
  • PhD, 1971, experimental solid state physics, Leeds University, U.K.
  • FCCPM, 1987, Canadian College of Physicists in Medicine, Canada

Appointments and Affiliations:

Research Focus:

  • Physics of medical X-ray detectors

Research Summary:

X-ray was the first and still is one of the most important medical imaging techniques.

In static X-ray imaging (radiography), two readout approaches are being investigated based on active matrix or liquid crystal laser readout for applications in chest imaging, general radiography and mammography.

For dynamic X-ray imaging (fluoroscopy), we are replacing conventional X-ray image intensifiers with an active matrix flat-panel device modified to include the avalanche multiplication. The application areas are related to intravascular interventions in the brain and coronary vessels of the heart. The combination of X-ray imaging with magnetic resonance imaging and the potential for dose reduction is also being investigated.

Understanding the physical limits of our systems will permit optimally matching them to clinical applications. Our investigations are resulting in improved clinical devices.

Selected Publications:

See current publications list at PubMed.

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