Clinical Image Gallery...Clinical Image Gallery Table of Contents WARNING: Any reference to x-ray...
Transcript of Clinical Image Gallery...Clinical Image Gallery Table of Contents WARNING: Any reference to x-ray...
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Clinical Image GalleryVolume 1
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Computed Tomography
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Clinical Image Gallery
Table of Contents
WARNING: Any reference to x-ray exposure, intravenous contrast dosage, and other medication is intended as a reference guideline only. The guidelines in this document do not substitute for the judgment of a healthcare provider. Each scan requires medical judgment by the healthcare provider about exposing the patient to ionizing radiation. Use the As Low As Reasonably Achievable (ALARA) radiation dose principle to balance factors such as the patient’s condition, size and age; region to be imaged; and diagnostic task.
Brain P4
Paranasal Sinuses P6
Emphysema P8
Right Arm CT Angiogram P10
Colorectal Mass P12
Lumbar Spine P14
Abdomen P16
Lower Limb CTA P18
Left Total Hip Replacement P20
Wrist P22
Disclaimer: In clinical practice, the use of the AIDR 3D feature may reduce CT patient dose depending on the clinical task, patient size, anatomical location and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task.
Due to local regulatory processes, some of the products included in this brochure may not be available in each country. Please contact your local Toshiba sales representative for the most current information.
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Eff ective Dose (mSv)
k
Helical 0.5 mm x 16 - Detail 120 150 0.75 140 AIDR* 3D Standard 60.5 946.5 1.99 0.0021
Clinical Image GalleryVol.1
4 5
This 40-year-old man presented with a severe headache. Noncontrast brain CT was performed.
* Adaptive Iterative Dose Reduction
No abnormalitie is seen.
Findings
BrainPatient History
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Eff ective Dose (mSv)
k
Helical 0.5 mm x 16 - Standard 80SUREExposureTM
Standard 0.6 99AIDR 3DStandard 1.9 21.1 0.04 0.0021
Clinical Image GalleryVol.1
6 7
This 21-year-old man presented with nasal obstruction. A CT of the paranasal sinuses was performed. No abnormality is seen.
Paranasal SinusesFindingsPatient History
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Eff ective Dose (mSv)
k
Helical 1.0 mm x 16 CE Fast 120SUREExposure
Standard 0.6 372AIDR 3DStandard 3.6 151.6 2.12 0.014
Injection Volume (ml) Rate (ml/s)
Contrast 80 4.0
Saline 30 4.0
Clinical Image GalleryVol.1
8 9
This 76-year-old man presented with general malaise and shortness of breath. A postcontrast chest CT was performed.
Emphysema
Small paratracheal lymph nodes are seen. In the lung windows, extensive emphysematous bullae are seen throughout both lungs. Lung Volume Analysis shows the Low Attenuation volumes to be 46% in the right lung and 39.7% in the left lung.
Lung Volume Analysis depicts the Low Attenuation regions in yellow.
FindingsPatient History
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Helical 1.0 mm x 16 CE Standard 120SUREExposure
Standard 0.6 768AIDR 3DStandard 2.3 1777.7
Injection Volume (ml) Rate (ml/s)
Contrast 100 4.0
Saline 30 4.0
Clinical Image GalleryVol.1
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This 52-year-old man presented with thoracic outlet syndrome. A CTA of the right arm was performed.
Right Arm CT Angiogram
Compression of the upper limb vessels is not seen, indicating that this is not the cause of his symptoms.
MIP SD-VR Fusion
FindingsPatient History
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Eff ective Dose (mSv)
k
GG-Hel 1.0 mm x 16 CE Standard 100SUREExposure
Standard 0.6 218.0AIDR 3DStandard 5.4 199.4 2.99 0.015
GG-Hel 1.0 mm x 16 CE Standard 100SUREExposure
Standard 0.6 420.0AIDR 3DStandard 6.5 337.0 5.05 0.015
Injection Volume (ml) Rate (ml/s)
Contrast 100 4.0
Saline 30 4.0
Clinical Image GalleryVol.1
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This 69-year-old woman presented with a colorectal mass found on prior imaging. Arterial-phase CT of the liver and venous-phase CT of the abdomen and pelvis were performed.
Arterial Arterial
Venous Venous
Colorectal Mass
An apple-core lesion is seen in the rectosigmoid colon. There are several liver lesions with peripheral enhancement typical of colorectal metastases. Several small metastases are also seen in both lungs.
FindingsPatient History
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Eff ective Dose (mSv)
k
Helical 1.0 mm x 16 - Detail 120 SUREExposure 3D 0.6 198.0 AIDR 3DStandard 14.7 328.1 4.92 0.015
Clinical Image GalleryVol.1
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This 59-year-old woman presented with the sudden onset of lower back pain. A CT of the lumbar spine was performed.
Multiplanar images of the L4/5 disc show a central disc bulge (arrows). No bony injury is seen.
Lumbar SpineFindingsPatient History
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Eff ective Dose (mSv)
k
GG-Hel 1.0 mm x 16 CE Standard 100SUREExposure
Standard 0.6 218.0AIDR 3DStandard 7.8 198.2 2.97 0.015
GG-Hel 1.0 mm x 16 CE Standard 120SUREExposure
Standard 0.6 420.0AIDR 3DStandard 7.9 356.9 5.35 0.015
Injection Volume (ml) Rate (ml/s)
Contrast 100 4.0
Saline 30 4.0
Clinical Image GalleryVol.1
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This 73-year-old man presented for a checkup following a prostatectomy. Arterial-phase liver and venous-phase abdomen and pelvis CT were performed for routine follow-up.
Abdomen
No evidence of metastases is seen.
Arterial Arterial
Venous Venous
FindingsPatient History
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Eff ective Dose (mSv)
k
GG-Hel 1.0 mm x 16 - Fast 80SUREExposure
Low Dose 0.6 574AIDR 3DStandard 0.6 40.9 0.03 0.0008
GG-Hel 1.0 mm x 16 CE Fast 100SUREExposure
Standard 0.6 1200AIDR 3DStandard 4.1 509.5 3.90 0.00765
Injection Volume (ml) Rate (ml/s)
Contrast 100 4.0
Saline 30 4.0
Clinical Image GalleryVol.1
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This 69-year-old man presented with exercise claudication. An aortofemoral runoff CTA was performed.
Lower Limb CTA
3D Volume Rendering
3D Volume Rendering
Right Femoral Artery
Inverted MIP
Left Femoral Artery
3D-VR Fusion
The right common iliac artery shows almost total occlusion immediately distal to the aortic bifurcation. The right curved MPR shows string fl ow of contrast around the occlusive lesion. The 3D bone segmentation does not remove the calcifi cation from the vessel walls. Lower leg subtraction shows complete occlusion of the left popliteal artery and enlarged perforating artery branches providing collateral fl ow runoff .
FindingsPatient History
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Eff ective Dose (mSv)
k
Helical 1.0 mm x 16 - Standard 135 90 0.6 265 AIDR 3D Mild 16.3 486.1 8.30 0.017
Clinical Image GalleryVol.1
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This 70-year-old woman presented following implantation of a prosthesis in the left hip. A CT of the pelvis was performed.
The acetabular bed and prosthetic cup are easily assessed in the SEMARTM reconstructions. The surrounding soft tissues are well visualized. No fl uid collections are seen.
Left Total Hip Replacement
Without SEMAR Without SEMARWith SEMAR With SEMAR
FindingsPatient History
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Scan Mode Collimation Contrast Pitch kVp mAs
Rotation Time (s)
Scan Range
(mm)
Dose Reduction
CTDIvol (mGy)
DLP (mGy·cm)
Eff ective Dose (mSv)
k
Helical 0.5 mm x 16 - Standard 120 36.0 0.6 86 AIDR 3DStandard 6.5 64.3 0.05 0.0008
Clinical Image GalleryVol.1
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This 55-year-old man presented with wrist pain and a history of an old wrist injury. A CT of the wrist was performed.
No bony injury is identifi ed. Slight separation of the pisiform from its usual close proximity to the triquetrum is seen.
WristFindingsPatient History
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