Tomography, Spiral Computed
Research News and Information

Sunday, November 22, 2009

Prevention of atelectasis in morbidly obese patients during general anesthesia and paralysis: a computerized tomography study.

30 Oct 2009 BACKGROUND: Morbidly obese patients show impaired pulmonary function during anesthesia and paralysis, partly due to formation of atelectasis. This study analyzed the effect of general anesthesia and three different ventilatory strategies to reduce ... Read more...

Adaptive replanning strategies accounting for shrinkage in head and neck IMRT.

30 Oct 2009 PURPOSE: Significant anatomic and volumetric changes occur in head and neck cancer patients during fractionated radiotherapy, and the actual dose can be considerably different from the original plan. The purposes of this study were (1) to evaluate ... Read more...

The influence of different IMRT techniques on the peripheral dose: a comparison between sMLM-IMRT and helical tomotherapy.

4 Oct 2009 PURPOSE: To investigate how segmented multileaf modulation-(sMLM-)based intensity-modulated radiotherapy (IMRT) and dynamic helical tomotherapy (ToTh) affect the peripheral dose (PD) outside the treated region. MATERIAL AND METHODS: A cuboid Perspex ... Read more...

Latest indexed articles for 'Tomography, Spiral Computed'

These are the very latest articles for this heading:

• Prevention of atelectasis in morbidly obese patients during general anesthesia and paralysis: a computerized tomography study. 30 Oct 2009
• Adaptive replanning strategies accounting for shrinkage in head and neck IMRT. 30 Oct 2009
• [Aortocaval fistula after administering the Heimlich maneuver--diagnosis with multislice CT] 12 Oct 2009
• The influence of different IMRT techniques on the peripheral dose: a comparison between sMLM-IMRT and helical tomotherapy. 4 Oct 2009
• Helical tomotherapy significantly reduces dose to normal tissues when compared to 3D-CRT for locally advanced rectal cancer. 29 Sep 2009
• Dosimetric comparisons of three-dimensional conformal radiotherapy, intensity-modulated radiotherapy, and helical tomotherapy in whole abdominopelvic radiotherapy for gynecologic malignancy. 29 Sep 2009
• Dosimetric comparison of intensity-modulated radiosurgery and helical tomotherapy for the treatment of multiple intracranial metastases. 29 Sep 2009
• Helical tomotherapy with simultaneous integrated boost for high-risk and lymph node-positive prostate cancer: early report on acute and late toxicity. 29 Sep 2009
• Megavoltage CT in helical tomotherapy - clinical advantages and limitations of special physical characteristics. 29 Sep 2009
• Invited commentary. 29 Sep 2009
• Growth rate of affected aorta in patients with type B partially closed aortic dissection. 29 Sep 2009
• Converging stereotactic radiotherapy using kilovoltage X-rays: experimental irradiation of normal rabbit lung and dose-volume analysis with Monte Carlo simulation. 29 Sep 2009
• Pulmonary embolism and spiral computerized tomographic scans. 30 Aug 2009
• Determining size and characteristics of metal intraocular foreign bodies using helical CT scan. 30 Aug 2009
• Imaging of blood flow in cerebral arteries with dynamic helical computed tomography angiography (DHCTA) using a 64-row CT scanner. 30 Aug 2009
• Evaluation of medial acetabular wall bone stock in patients with developmental dysplasia of the hip using a helical computed tomography multiplanar reconstruction technique. 30 Aug 2009
• Hepatic falciform ligament artery in patients with chronic liver diseases: detection on computed tomography hepatic arteriography. 30 Aug 2009
• Early CT findings of tomotherapy-induced radiation pneumonitis after treatment of lung malignancy. 30 Aug 2009
• Closure of a penetrating ulcer of the descending aorta using an Amplatzer occluder. 30 Aug 2009
• Are we coming full circle for lung cancer screening a second time? 30 Aug 2009

See a longer list of these articles.

Technical information about 'Tomography, Spiral Computed'

Definition: Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography, where data is obtained and computed from individual sequential exposures.

Descriptor UI: D036542

Alternative terms: Tomography, Spiral Computed; Computed Tomography, Spiral; Computer-Assisted Tomography, Spiral; Computer Assisted Tomography, Spiral; Spiral Computer-Assisted Tomography; Tomography, Spiral Computer-Assisted; Computerized Tomography, Spiral; Spiral Computerized Tomography; Tomography, Spiral Computerized; CT Scan, Spiral; CT Scans, Spiral; Scan, Spiral CT; Scans, Spiral CT; Spiral CT Scan; Spiral CT Scans; Helical CT; CT, Helical; CTs, Helical; Helical CTs; Spiral Computed Tomography; Spiral CT; CT, Spiral; CTs, Spiral; Spiral CTs; Tomography, Helical Computed; CAT Scan, Spiral; CAT Scans, Spiral; Scan, Spiral CAT; Scans, Spiral CAT; Spiral CAT Scan; Spiral CAT Scans; Helical Computed Tomography; Computed Tomography, Helical;

Allowable Qualifiers: adverse effects; classification; economics; history; instrumentation; methods; mortality; nursing; psychology; standards; trends; utilization; veterinary; statistics & numerical data; contraindications; ethics;

Tree Number: E01.370.350.350.810.800; E01.370.350.600.350.700.810.800; E01.370.350.700.700.810.800; E01.370.350.700.810.810.800; E01.370.350.825.810.810.800;

History Note: 2003

Technical Notes: do not confuse with SPIRAL CONE-BEAM COMPUTED TOMOGRAPHY