Protocol Design Medical Physicist shall ensure that CT techniques protocols are designed such that dose exposure is the lowest radiation dose necessary to achieve the objective. Physician / Medical Physicist Protocols defined by Gently and Image Wisely should be used where feasible. The protocol shall be recorded and documented. The technologist shall ensure that the CT dose Technologist conforms to the dose prescribed by the supervising physician or protocol. 3.7. Image Data Reconstruction 3.7.2 Parameter Actor Requirement Study Sponsor and The key SPECT reconstruction parameters (algorithm, iterations, Medical Physicist smoothing, field of view, voxel size) shall be specified in a manner and imaging that is expected to produce comparable results regardless of the center and its scanner make and model. applicable The key SPECT image reconstruction parameters shall be specified SPECT Image standard Reconstruction according to pre-determined harmonization parameters. operating procedures The key SPECT reconstruction parameters (algorithm, iterations, smoothing, field of view, voxel size) shall be followed and set as Technologist specified in order to produce comparable results regardless of the scanner make and model. The Technologist shall perform the image reconstruction such that the matrix, slice thickness, and reconstruction zoom shall Matrix/Voxel yield a voxel size of < 4 mm (same as projection bin size) in all Technologist size three dimensions, although not necessarily isotropic. The final size shall not be achieved by re-binning, etc., of the reconstructed images. Uniform or non-uniform attenuation correction shall be included Correction: in the reconstruction. Technologist Attenuation For uniform correction a narrow beam attenuation coefficient of 0.148 cm-1 shall be used when scatter correction is included while
Protocol Design Physician / Medical Physicist Medical Physicist shall ensure that CT techniques protocols are designed such that dose exposure is the lowest radiation dose necessary to achieve the objective. Protocols defined by Gently and Image Wisely should be used where feasible. The protocol shall be recorded and documented. Technologist The technologist shall ensure that the CT dose conforms to the dose prescribed by the supervising physician or protocol. 3.7. Image Data Reconstruction 3.7.2 Parameter Actor Requirement SPECT Image Reconstruction Study Sponsor and Medical Physicist and imaging center and its applicable standard operating procedures The key SPECT reconstruction parameters (algorithm, iterations, smoothing, field of view, voxel size) shall be specified in a manner that is expected to produce comparable results regardless of the scanner make and model. The key SPECT image reconstruction parameters shall be specified according to pre-determined harmonization parameters. Technologist The key SPECT reconstruction parameters (algorithm, iterations, smoothing, field of view, voxel size) shall be followed and set as specified in order to produce comparable results regardless of the scanner make and model. Matrix/Voxel size Technologist The Technologist shall perform the image reconstruction such that the matrix, slice thickness, and reconstruction zoom shall yield a voxel size of < 4 mm (same as projection bin size) in all three dimensions, although not necessarily isotropic. The final size shall not be achieved by re-binning, etc., of the reconstructed images. Correction: Attenuation Technologist Uniform or non-uniform attenuation correction shall be included in the reconstruction. For uniform correction a narrow beam attenuation coefficient of 0.148 cm-1 shall be used when scatter correction is included while
002.QIBA_SPECT_Profile_Checklist_Extract.2016_10_31.docx