Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | Yes | N/A | N/A | to include mastoid cells through petrous ridges |
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: Careful positioning is important to avoid unnecessary exposure to the eyes. All scans are performed using the ALARA principle | ||||
Technical Parameters | Parameters |
kVp | 120 |
Effective mAs | 350 |
Time (Rotation) | 1.0 sec |
Average Acquisition Time | 16 sec |
Collimation | 12 x 0.3mm |
Pitch Value | 0.8 |
Scan Direction | caudocranial |
Comments: Decreasing the display field of view for both the right and the left temporal bones will increase spatial resolution. Scans times are significantly longer then routine scans do to a small collimator size coupled with a low pitch value to increase resolution. | |
Reconstruction Parameters | Soft Tissue | Thin Data | Bone |
Slice Thickness | 2mm | 0.6mm | 0.6mm |
Reconstruction Spacing | 2mm | 0.4mm | 0.4mm |
Reconstruction Algorithm | U30u | U70u | U70u |
Window Width and Level | 350 / 50 | 3500 / 500 | 3500 / 500 |
Reconstruction Comments: Reconstructions are done both bilaterally and coned down for each temporal bone. Coronal and sagittal recons are also performed. | |||
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 routinely necessary. | |
Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | Yes | N/A | N/A | to include mastoid cells through petrous ridges |
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: Careful positioning is important to avoid unnecessary exposure to the eyes. All scans are performed using the ALARA principle | ||||
Technical Parameters | Parameters |
kVp | 120 |
Effective mAs | 350 |
Time (Rotation) | 1.0 sec |
Average Acquisition Time | 16 sec |
Collimation | 12 x 0.3mm |
Pitch Value | 0.8 |
Scan Direction | caudocranial |
Comments: Decreasing the display field of view for both the right and the left temporal bones will increase spatial resolution. Scans times are significantly longer then routine scans do to a small collimator size coupled with a low pitch value to increase resolution. | |
Reconstruction Parameters | Soft Tissue | Thin Data | Bone |
Slice Thickness | 2mm | 0.6mm | 0.6mm |
Reconstruction Spacing | 2mm | 0.4mm | 0.4mm |
Reconstruction Algorithm | U30u | U70u | U70u |
Window Width and Level | 350 / 50 | 3500 / 500 | 3500 / 500 |
Reconstruction Comments: Reconstructions are done both bilaterally and coned down for each temporal bone. Coronal and sagittal recons are also performed. | |||
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 routinely necessary. | |