Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | Yes | N/A | N/A | Base of skull through apex |
Arterial Phase | N/A | N/A | N/A | N/A |
Venous Phase | N/A | N/A | N/A | N/A |
Delayed Phase | N/A | N/A | N/A | N/A |
Scan Comments: The F/U shunt protocol is performed using a low dose sequential scan to limit patient exposure. Isocentering and properly positioning the patient within the gantry is key to image quality and limiting the radiation dose. If the patient is unable to hold still for the 30 second duration of the exam a low dose spiral study can be performed instead to decrease the scan time. All scans are performed using the ALARA principle. |
Technical Parameters | Parameters |
kVp | 120 |
Effective mAs | 200 |
Care Dose Reference mAs | N/A |
Time (Rotation) | 1.0 sec (full) 3.5sec cycle time |
Average Acquisition Time | 29 sec |
Collimation | 24 x 1.2mm |
Table Feed | 28.5 mm |
Scan Direction | caudocranial |
Comments: The F/U shunt protocol is performed using a low dose sequential scan to limit patient exposure. |
Reconstruction Parameters | Soft Tissue | Bone | Thin |
Slice Thickness | 4.8mm | 4.8mm | N/A |
Reconstruction Spacing | 4.8mm | 4.8mm | N/A |
Reconstruction Algorithm | H30s | H60s | N/A |
Window Width and Level | 100 / 30 | 2500/500 | N/A |
Reconstruction Comments: Proper patient positioning is key to avoid unnecessary exposure to the patient’s eyes. |
Contrast Parameters | Parameters |
Contrast Type | N/A |
Contrast Volume | N/A |
Saline Flush | N/A |
Injection Rate | N/A |
Oral Contrast | N/A |
Contrast Volume | N/A |
Comments: IV contrast is not necessary for this exam. |
Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | Yes | N/A | N/A | Base of skull through apex |
Arterial Phase | N/A | N/A | N/A | N/A |
Venous Phase | N/A | N/A | N/A | N/A |
Delayed Phase | N/A | N/A | N/A | N/A |
Scan Comments: The F/U shunt protocol is performed using a low dose sequential scan to limit patient exposure. Isocentering and properly positioning the patient within the gantry is key to image quality and limiting the radiation dose. If the patient is unable to hold still for the 30 second duration of the exam a low dose spiral study can be performed instead to decrease the scan time. All scans are performed using the ALARA principle. |
Technical Parameters | Parameters |
kVp | 120 |
Effective mAs | 200 |
Care Dose Reference mAs | N/A |
Time (Rotation) | 1.0 sec (full) 3.5sec cycle time |
Average Acquisition Time | 29 sec |
Collimation | 24 x 1.2mm |
Table Feed | 28.5 mm |
Scan Direction | caudocranial |
Comments: The F/U shunt protocol is performed using a low dose sequential scan to limit patient exposure. |
Reconstruction Parameters | Soft Tissue | Bone | Thin |
Slice Thickness | 4.8mm | 4.8mm | N/A |
Reconstruction Spacing | 4.8mm | 4.8mm | N/A |
Reconstruction Algorithm | H30s | H60s | N/A |
Window Width and Level | 100 / 30 | 2500/500 | N/A |
Reconstruction Comments: Proper patient positioning is key to avoid unnecessary exposure to the patient’s eyes. |
Contrast Parameters | Parameters |
Contrast Type | N/A |
Contrast Volume | N/A |
Saline Flush | N/A |
Injection Rate | N/A |
Oral Contrast | N/A |
Contrast Volume | N/A |
Comments: IV contrast is not necessary for this exam. |