The Northern Ireland Cancer Centre, Belfast Health and Social Care Trust, Belfast, Northern Ireland

The Northern Ireland Cancer Centre currently operates from Belfast City Hospital, as part of the Belfast Health and Social Care Trust.
Diagnostic equipment includes: 1 Acuity Sim-CT and 2 GE-Optima CT-SIMs (4DCT).
There is also an IBU unit for HDR and a prostate seed service. Current linear accelerators include 4 Varian 600CDs, 1 Varian 2100CDs, 4 Varian TrueBeams and 1 Varian TrueBeam Stx.
Treatment planning systems include: Elekta Oncentra Masterplan, Varian Eclipse and BrainLab iPlan. MU checking software utilized is RadCalc® (LifeLine Software Inc)

Current PTW equipment includes:

  • UNIDOS Electrometers, 2 PinPoint ionization chambers, Semiflex chamber, MicroDiamond chamber, 3 LINACHECKs, Dosimetry Diode P, Dosimetry Diode E
  • Plotting tank system (Water tank, Water reservoir, TBA control unit. TANDEM electrometer, Thimble chamber type 31002 (x4), Markus electron chamber, Soft X-ray chamber 23344, Dosimetry Diode (photons), 2 Dosimetry Diode (electrons) and Dosimetry diode (SRS).
  • MEPHYSTO software including VeriSoft® Patient Plan Verification Software
  • Well-Type Chamber W33004, SourceCheck T34051,
  • Strontium check source (cathetron ref source).
  • OCTAVIUS® 4D, OCTAVIUS® 729 detector array, OCTAVIUS® 1000 SRS detector array and QUIICKCHECKwebline.

The Radiotherapy Physics Department is a reference site for PTW Dosimetry and acts as a beta test site for selected products and developments. The department has expertise in radiobiology, dosimetry, quality assurance, phantom development and image guided radiotherapy. It has strong links with the Centre for Cancer Research and Cell Biology, Queens University Belfast.

Papers Published on PTW Equipment:  


Agnew CE, Irvine DM, McGarry CK. Correlation of phantom-based and log file patient-specific QA with complexity scores for VMAT. Journal of applied clinical medical physics. 2014 Nov 8;15(6).  

McGarry CK, O'Connell BF, Grattan MW, Agnew CE, Irvine DM, Hounsell AR. Octavius 4D characterization for flattened and flattening filter free rotational deliveries. Medical physics. 2013 Sep 1;40(9).  

Agnew CE, McGarry CK. A tool to include gamma analysis software into a quality assurance program. Radiotherapy and Oncology. 2016 Mar 31;118(3):568-73.  

Sukumar P, McCallum C, Hounsell AR, McGarry CK. Characterisation of a two-dimensional liquid-filled ion chamber detector array using flattened and unflattened beams for small fields, small MUs and high dose-rates. Biomedical Physics & Engineering Express. 2016 Mar 23;2(2):025007.  

Osman SO, Jeevanandam P, Kanakavelu N, Irvine DM, Lyons CA, Jain S, Hounsell AR, McGarry CK. Class solutions for SABR-VMAT for high-risk prostate cancer with and without elective nodal irradiation. Radiation Oncology. 2016 Nov 24;11(1):155.  

King RB, Agnew CE, O'Connell BF, Prise KM, Hounsell AR, McGarry CK. Time-resolved dosimetric verification of respiratory-gated radiotherapy exposures using a high-resolution 2D ionisation chamber array. Physics in Medicine and Biology. 2016 Jul 6;61(15):5529.


Contact address:

Dr. Conor McGarry, PhD
Radiotherapy Physics  
Belfast Health and Social Care Trust
Northern Ireland Cancer Centre Honorary

Senior Lecturer
Centre for Cancer Research and Cell Biology
Queens University Belfast  




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