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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2013/10/22 02:53:55」(JST)
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Spiral computed tomography |
Diagnostics |
MeSH |
D036542 |
Spiral computed tomography is a computed tomography[1] technology involving movement in a helical pattern for the purpose of increasing resolution. Most modern hospitals currently use spiral CT scanners.
CT beam types have included parallel beams, fan-beams, and cone-beams.[2]
Contents
- 1 SSCT and MSCT
- 2 Helical (or spiral) cone beam computed tomography
- 3 References
- 4 External links
SSCT and MSCT[edit]
Willi Kalender, who is credited with the invention prefers the term Spiral scan CT,[3] arguing that spiral is synonymous with helical: for example as used in 'spiral staircase'.[4]
Since its invention by Kalender in the 1980s, helical scan CT machines have steadily increased the number of rows of detectors (slices) they deploy. The prototype 16 multi-slice scanner was introduced in 2001 and in 2004, 64 multislice scanners are on the market. These can produce an image in less than a second and thus can obtain images of the heart and its blood vessels (coronary vessels) as if frozen in time.
The earliest devices, developed in 1989, were called "SSCT", for "single-slice spiral computed tomography". In 1998, "MSCT" or "multi-slice spiral computed tomography" was introduced.[5]
Helical (or spiral) cone beam computed tomography[edit]
Further information: Cone beam computed tomography
In cone-beam computed tomography (commonly abbreviated CBCT), the x-ray beam is conical.[6]
Helical (or spiral) cone beam computed tomography is a type of three dimensional computed tomography (CT) in which the source (usually of x-rays) describes a helical trajectory relative to the object while a two dimensional array of detectors measures the transmitted radiation on part of a cone of rays emanating from the source.
In practical helical cone beam x-ray CT machines, the source and array of detectors are mounted on a rotating gantry while the patient is moved axially at a uniform rate. Earlier x-ray CT scanners imaged one slice at a time by rotating source and one dimensional array of detectors while the patient remained static. The helical scan method reduces the x-ray dose to the patient required for a given resolution while scanning more quickly. This is however at the cost of greater mathematical complexity in the reconstruction of the image from the measurements.
References[edit]
- ^ Avinash C. Kak and Malcolm Slaney (2001). Principles of Computerized Tomographic Imaging. Society for Industrial and Applied Mathematics ISBN 978-0-89871-494-4 / ISBN 0-89871-494-X.
- ^ Alan Conrad Bovik (2009). The essential guide to image processing. Academic Press. pp. 743–. ISBN 978-0-12-374457-9. Retrieved 4 June 2011.
- ^ Kalender WA (1994). "Technical foundations of spiral CT" Semin Ultrasound CT MR 15: (2) 81-89.
- ^ Kalender WA (1994). "Spiral or helical CT: right or wrong?" Radiology 193: (2) 583.
- ^ Robert Cierniak (12 January 2011). X-Ray Computed Tomography in Biomedical Engineering. Springer. pp. 31–. ISBN 978-0-85729-026-7. Retrieved 4 June 2011.
- ^ Helical Cone-Beam CT at the US National Library of Medicine Medical Subject Headings (MeSH)
External links[edit]
- Interview with Kalender
- Principles of Computerized Tomographic Imaging
Medical testing : Medical imaging · Radiology · (ICD-9-CM V3 87–88, ICD-10-PCS B, CPT 70010–79999)
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X-ray/
medical radiography/
Industrial radiography |
2D
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Medical: Pneumoencephalography · Dental radiography · Sialography · Myelography · CXR (Bronchography) · AXR / KUB · DXA/DXR · Upper gastrointestinal series/Small bowel follow-through/Lower gastrointestinal series · Cholangiography/Cholecystography · Mammography · Pyelogram · Cystography · Arthrogram · Hysterosalpingography · Skeletal survey · Angiography (Angiocardiography, Aortography) · Venography · Lymphogram
Industrial: Radiographic testing
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3D / XCT
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Medical: CT pulmonary angiogram · Cardiac CT · Abdominal and pelvic CT (Virtual colonoscopy) · CT angiography · CT head · pQCT · Spiral computed tomography · High resolution CT · Whole body imaging (Full-body CT scan) · Electron beam tomography
Industrial: Industrial CT Scanning
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Other
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Fluoroscopy
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MRI |
MRI of brain and brain stem · MR neurography · Cardiac MRI/Cardiac MRI perfusion · MR angiography · MR cholangiopancreatography · Breast MRI
Functional MRI · Diffusion MRI
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Ultrasound |
Echocardiography / Doppler echocardiography (TTE · TEE) · Intravascular · Gynecologic · Obstetric · Echoencephalography · Transcranial doppler · Abdominal ultrasonography · Transrectal · Breast ultrasound · Transscrotal ultrasound · Carotid ultrasonography
Contrast-enhanced · 3D ultrasound · Endoscopic ultrasound · Emergency ultrasound (FAST · Pre-hospital ultrasound) · Duplex
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Radionuclide |
2D / scintigraphy
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Cholescintigraphy · Scintimammography · Ventilation/perfusion scan · Radionuclide ventriculography · Radionuclide angiography · Radioisotope renography · Sestamibi parathyroid scintigraphy · Radioactive iodine uptake test · Bone scintigraphy · Immunoscintigraphy
full body: Octreotide scan · Gallium 67 scan · Indium 111 WBC scan
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3D / ECT
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SPECT (gamma ray): Myocardial perfusion imaging
PET (positron): Brain PET, Cardiac PET, PET mammography, PET-CT
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Optical laser |
Optical tomography (Optical coherence tomography) · Confocal microscopy · Endomicroscopy
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Thermography |
Breast thermography
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Respiratory system surgeries and other procedures (ICD-9-CM V3 21–22, 30–34, ICD-10-PCS 0B)
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Upper RT |
- nose
- Rhinoplasty
- Septoplasty
- Rhinectomy
- Rhinomanometry
- sinus
- Sinusotomy
- larynx
- Laryngoscopy
- Laryngectomy
- Laryngotomy
- Thyrotomy
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Lower RT |
- trachea
- Cricothyrotomy
- Tracheoesophageal puncture
- Tracheotomy
- bronchus
- Bronchoscopy
- lung
- Pneumonectomy
- Lobectomy
- Wedge resection
- Lung transplantation
- Decortication of lung
- Heart-lung transplant
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Chest wall, pleura,
mediastinum, and diaphragm |
- pleura/pleural cavity
- Thoracentesis
- Pleurodesis
- Thoracoscopy
- Thoracotomy
- Chest tube
- mediastinum
- Mediastinoscopy
- Nuss procedure
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Medical imaging |
- Bronchography
- CT pulmonary angiogram
- High resolution CT
- Spiral CT
- Ventilation/perfusion scan
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CPRs |
- Pneumonia severity index
- CURB-65
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Lung function test |
- Body plethysmography
- Spirometry
- Bronchial challenge test
- Capnography
- Diffusion capacity
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Cytology |
- Sputum culture
- Bronchoalveolar lavage
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Respiratory therapy/
intubation |
- Mechanical ventilation
- Positive pressure ventilation
- Artificial respiration
- Nebulizer
- Hyperbaric medicine
- Oxygen therapy
- Decompression chamber
- Heliox
- Negative pressure ventilator
- Postural drainage
- CPR
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anat (n, x, l, c)/phys/devp
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noco (c, p)/cong/tumr, sysi/epon, injr
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proc, drug (R1/2/3/5/6/7)
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UpToDate Contents
全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.
- 1. 胸部CTの原理 principles of computed tomography of the chest
- 2. 肝胆道のCT撮影 computed tomography of the hepatobiliary tract
- 3. 肺の高分解能CT high resolution computed tomography of the lungs
- 4. 成人における急性下部消化管出血に対するアプローチ approach to acute lower gastrointestinal bleeding in adults
- 5. 小児における腎結石症の臨床的特徴および診断 clinical features and diagnosis of nephrolithiasis in children
English Journal
- Single-slice reconstruction method for helical cone-beam differential phase-contrast CT.
- Fu J, Chen L.SourceResearch Center of Digital Radiation Imaging and Biomedical Imaging, Beijing University of Aeronautics and Astronautics, 100191 Beiijng, People's Republic of China. E-mail: fujian706@buaa.edu.cn, chenly706@me.buaa.edu.cn.
- Bio-medical materials and engineering.Biomed Mater Eng.2014;24(1):45-51. doi: 10.3233/BME-130782.
- X-ray phase-contrast computed tomography (PC-CT) can provide the internal structure information of biomedical specimens with high-quality cross-section images and has become an invaluable analysis tool. Here a simple and fast reconstruction algorithm is reported for helical cone-beam differential PC
- PMID 24211881
- Synthesis and nanostructures of several tetrathiafulvalene derivatives having the side chains composed of chiral and hydrogen-bonding groups and their charge-transfer complexes.
- Tatewaki Y, Watanabe T, Watanabe K, Kikuchi K, Okada S.SourceDepartment of Organic Device Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa 992-8510, Japan. ytatewa@yz.yamagata-u.ac.jp okadas@yz.yamagata-u.ac.jp.
- Dalton transactions (Cambridge, England : 2003).Dalton Trans.2013 Dec 7;42(45):16121-7. doi: 10.1039/c3dt51464a. Epub 2013 Sep 10.
- Tetrathiafulvalene (TTF) derivatives TTF-Bor, TTF-2UM and TTF-4UM having chiral urethane groups were prepared. Among them, TTF-2UM, TTF-4UM and their charge-transfer (CT) complexes with F4TCNQ organized the nanowires. The intermolecular hydrogen bonding of the chiral urethane groups and π-stacking
- PMID 24022061
- Enhanced reconstruction of rat calvarial defects achieved by plasma-treated electrospun scaffolds and induced pluripotent stem cells.
- Ardeshirylajimi A, Dinarvand P, Seyedjafari E, Langroudi L, Jamshidi Adegani F, Soleimani M.SourceStem Cell Biology Department, Stem Cell Technology Research Center, Tehran, Iran, r.ardeshiry.62@gmail.com.
- Cell and tissue research.Cell Tissue Res.2013 Dec;354(3):849-60. doi: 10.1007/s00441-013-1693-8. Epub 2013 Aug 18.
- Tissue engineering with a combination of stem cells and nanofibrous scaffolds has attracted interest with regard to bone regeneration applications. In the present study, human induced pluripotent stem cells (iPSCs) were cultured on polymeric nanofibrous polyethersulfone (PES) with and without plasma
- PMID 23955642
Japanese Journal
- 320-row Multi Detector Computed Tomography におけるノンヘリカルスキャンの物理特性
- 瓜倉 厚志,中屋 良宏,市川 勝弘,川谷 圭亮,川嶋 一平,後藤 弘徳
- 日本放射線技術學會雜誌 68(4), 432-442, 2012-04-20
- NAID 10030139542
Related Links
- その後、1986年にヘリカルCT(ヘリカルスキャン)が開発され、1998年には4列MDCT が登場してきた。 ... 旧来よりの方法という意味でコンベンショナルスキャン ( conventional scan) と呼ぶこともあるが、最近ではヘリカルCTに対する言葉として、ノン ヘリカルCT ...
- また、管球や検出器は導線につながっているために配線が絡みにくいように、CT撮影の 回転方向を正→逆→正→逆・・・と交互に変えていたそうです。この方式によるCT装置を 「ノンヘリカルCT」、別名従来型ということで「コンベンショナルCT」と呼ばれています。
Related Pictures
★リンクテーブル★
[★]
- 英
- helical computed tomography、helical CT
- 関
- ヘリカルCT、スパイラルCT、ヘリカルコンピュータ断層撮影、スパイラル断層撮影
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- 英
- helical CT
- 関
- ヘリカルスキャンCT
- 関
- スパイラルCT、ヘリカル断層撮影、スパイラル断層撮影
[★]
ヘリカル断層撮影、ヘリカルコンピュータ断層撮影
- 関
- helical CT、spiral computed tomography、spiral CT
[★]
- 関
- helical computed tomography、helical CT、spiral computed tomography
[★]
スパイラル断層撮影
- 関
- helical computed tomography、helical CT、spiral CT
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[★]
[★]
- 関
- helices、helix、spiral