Gallium Study
1. Preparation
a. No patient preparation
2. Isotope administration
a. Patient will receive 8 mci Ga67 intravenously
3. Camera Parameters Planar imaging
a. Whole Body Parameters
i. MELP collimators
ii. Matrix: 256 x1024
iii. Zoom: 1.0
iv. Detector: both
v. Auto contour: On
vi. Scan Speed: 8 cm/min
vii. Patient position: supine
b. Camera Parameters SPECT
i. MELP collimators used for imaging
ii. Matrix: 128X128
iii. Zoom: 1
iv. Time: 30 sec per stop
v. Views: 64
vi. Detector configuration 180
vii. Orbit non circular
viii. Mode step/shoot
ix. Rotation: clockwise
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i. MELP collimators
ii. Matrix: 256 x1024
iii. Zoom: 1.0
iv. Detector: both
v. Auto contour: On
vi. Scan Speed: 8 cm/min
vii. Patient position: supine
-
i. MELP collimators used for imaging
ii. Matrix: 128X128
iii. Zoom: 1
iv. Time: 30 sec per stop
v. Views: 64
vi. Detector configuration 180
vii. Orbit non circular
viii. Mode step/shoot
ix. Rotation: clockwise
4. Scanning protocol
a. Patient will be injected with radiotracer intravenously
b. Patient will wait 48 hours post injection for infection indication and 72 hours post injection for all other indications
c. Immediately prior to placing patient on scanning table the patient should be asked to void.
d. All metal objects should be removed from patient prior to scan start
e. Patient will lay supine on the table with the head facing out.
f. Patient will be scanned from the superior aspect of the skull to feet
g. After wholebody scan, radiologist will decide how many bed SPECT/CT for the patient
b. Patient will wait 48 hours post injection for infection indication and 72 hours post injection for all other indications
c. Immediately prior to placing patient on scanning table the patient should be asked to void.
d. All metal objects should be removed from patient prior to scan start
e. Patient will lay supine on the table with the head facing out.
f. Patient will be scanned from the superior aspect of the skull to feet
g. After wholebody scan, radiologist will decide how many bed SPECT/CT for the patient
5. SPECT/CT Reconstruction
a. Nuclear Medicine Parameters
i. Iterative OSEM 2D (4 subsets, 8 iterations)
ii. Gaussian 6.0 filter
iii. Chang's Attenuation Coefficient 0.15
b. CT Parameters
i. Abd Window
ii. Body 5.0 B30s Med Smooth
iii. 5 mm Slice
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i. Iterative OSEM 2D (4 subsets, 8 iterations)
ii. Gaussian 6.0 filter
iii. Chang's Attenuation Coefficient 0.15
-
i. Abd Window
ii. Body 5.0 B30s Med Smooth
iii. 5 mm Slice
6. Post processing/Display/Achieve
a. All acquired images will be adjusted for optimal viewing and appropriate labeling.
b. All SPECT images will be displayed in coronal and sagittal planes with and without CT fusion and NM MIP
c. Images will be sent to the PAC's system and Syngo Via for archiving/physician review
b. All SPECT images will be displayed in coronal and sagittal planes with and without CT fusion and NM MIP
c. Images will be sent to the PAC's system and Syngo Via for archiving/physician review