+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

CT measurement of the thoracic density

CT measurement of the thoracic density

Nihon Kyobu Geka Gakkai 43(2): 168-173

The purpose of this introducing study was to establish the normal lung density using computed tomography of the chest. If it is possible to analyze the density of normal lung parenchyma, it could be possible to estimate the quantity of effective ventilation capacity based on account of the CT number of given range. A cross section of the lung, however, is not homogeneous because it contents of vascular tissue, interstitial tissue, air and others which have widely variety densities. To estimate pulmonary function, it is necessary to know the exact CT number of only normal lung tissue. Mean values for varies tissues and areas in the thorax were assessed in 34 patients (21 males, 13 females, average age: 58 years, from August 1987 to June 1993), 18 case of lung cancer (10 preoperative, 8 postoperative), 5 metastatic lung cancer, 1 giant bulla, 1 aspergilloma, 1 pulmonary AV fistula, 8 case had no lung disease. The measured normal peripheral lung by radiographic appearance on CT images, vascular in the lung, bronchus, rib, muscle and fat structured chest wall, heart, liver, aorta, esophagus, and thymus. Density of normal peripheral lung tissue was measured in 6 points on each slices. These scores were compared left vs. right, slice number, and anterior vs. posterior. The CT numbers in this study following the no enhanced computed tomography scanner: GE9800 CT by using the regions of interest which limited in 0.01 cm 2 area. There was no significant difference between left and right lung, among different slices, although between anterior and posterior in the normal lung.

Please choose payment method:

(PDF emailed within 1 workday: $29.90)

Accession: 042429952

Download citation: RISBibTeXText

PMID: 7714378

Related references

Measurement of thoracic bone mineral density with quantitative CT. Radiology 257(2): 434-440, 2010

Evaluation of phase correction and low gas density to improve thoracic gas volume measurement. Journal of Applied Physiology 58(2): 346-351, 1985

Trabecular bone mineral density measurement using thoracic and lumbar quantitative computed tomography. Academic Radiology 19(2): 179-183, 2012

Measurement of trabecular bone mineral density in the thoracic spine using cardiac gated quantitative computed tomography. Journal of Computer Assisted Tomography 28(1): 134-139, 2004

Measurement of phantomless thoracic bone mineral density on coronary artery calcium CT scans acquired with various CT scanner models. Radiology 267(3): 830-836, 2013

Early prenatal diagnosis of asphyxiating thoracic dysplasia (Jeune's syndrome). Value of fetal thoracic measurement. Journal of Ultrasound in Medicine 6(1): 41-43, 1987

Impedance cardiography: noninvasive measurement of hemodynamics and thoracic fluid content during endoscopic thoracic sympathectomy. Surgical Laparoscopy, Endoscopy & Percutaneous Techniques 15(6): 328-331, 2005

Computed tomographic morphometry of thoracic pedicles: safety pedicle parameter measurement of the Chinese immature thoracic spine. International Orthopaedics 33(6): 1663-1668, 2008

Correlation analysis between change in thoracic kyphosis and multilevel facetectomy and screw density in main thoracic adolescent idiopathic scoliosis surgery. Spine Journal 16(9): 1049-1054, 2016

Main thoracic curve adolescent idiopathic scoliosis: association of higher rod stiffness and concave-side pedicle screw density with improvement in sagittal thoracic kyphosis restoration. Journal of Neurosurgery. Spine 22(3): 259-266, 2015

A trial of bone density instrumentation with a radius ultrasonic bone density measurement device - Comparison examination with bone density instrumentation value in a calcaneus ultrasonic bone density measurement device -. Memoirs of Osaka Kyoiku University Series III Natural Science and Applied Science 55(2): 65-71, 2007

Low-density versus high-density thoracic pedicle screw constructs in adolescent idiopathic scoliosis: do more screws lead to a better outcome?. Spine Journal 13(4): 375-381, 2013

Fetal growth and repeated measurement of the thoracic circumference. 1. Are measurements of the thoracic circumference made in the beginning of the third trimester of pregnancy useful?. Journal de Gynecologie, Obstetrique et Biologie de la Reproduction 12(5): 495-500, 1983

Measurement of very low density and low density lipoprotein apolipoprotein (Apo) B-100 and high density lipoprotein Apo A-I production in human subjects using deuterated leucine. Effect of fasting and feeding. Journal of Clinical Investigation 85(3): 804-811, 1990