X-RAY OF NASAL BONE
X-ray Nasal Bone Axial View
Nasal Bone Axial
Region: nasal bone, septal cartilage, soft tissue
Pathology: fractur of nasal bone
SID: 100 cm (40 inches)
Central Ray: beam directed to the nasion parallel to the glabelloalveolar line (GAL)
Respiration: suspended
Position:
1. The patient is placed either in a
sitting position or in a prone position.
2. Hold the chin up and place it on the image receptor (IR), and place the IR
on a support to make a slope to align the Glabelloalveolar Line
(GAL) perpendicular to the IR
3. When using the standard occlusal film, place the IR between teeth to align
the midsagittal plane (MSP) to the midline of the IR.
Collimation: Include nasal bone and bilateral septal cartilage.
Evaluation:
1. All structures of nasal
bones including soft tissue of nasal bone should be included in the image.
2. Nasal bones must not overlap with any other facial bones.
kVp-55, mAs-3
Tip
1. When high resolution is necessary, low
kVp shooting or use of non-screen cassette, etc can be considered.
2. By using occlusal film, projecting in parallel with glabelloalveolar line
(GAL) is possible while biting the filming in mouth.
3. If forehead or teeth protrude too much, this inspection can be hard to be
implemented.
4. It is hard to maintain the pose for patient; the inspection must be done in
a short time.
X-ray Nasal Bone Lateral View
Nasal Bone Lateral
Region: nasal bone, soft tissue
Pathology: fracture of nasal bone
SID: 100 cm (40 inches)
Central Ray: perpendicular beam directed at the point 1.5 cm (0.6 inch) below the nasion
Respiration: suspended
Position:
1. The patient is placed either in an erect
position or in a semi-prone position.
2. Align the Inferior orbitomeatal
line (IOML) parallel to the horizontal axis of image receptor (IR).
3. Align the Interpapillary Line (IPL) perpendicular to the IR and adjust the
head to align the midsagittal plane (MSP) parallel to the IR.
4. Place the point 1.5 cm below the nasion at
the center of the IR.
5. Maintain the true lateral position by placing the patient's ear tightly on
the IR.
Collimation: Include entire nasal bone from glabella to anterior nasal spine.
Evaluation:
1. All structures of nasal
bones including soft tissue of nasal bone should be included in the image.
2. Nasal bones must not overlap with any other facial bones.
kVp-55, mAs-3
Tip:
1. Since sharp images of nose's soft
tissues and nasal
bones are necessary, small focus and low kVp filming is used. Use of
non-screen cassette, etc can be considered as well.
2. It is usual to take both of bilateral nasal bones.
3. It is hard to maintain the pose for patient; the inspection must be done in
a short time.
