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CT Number

A normalized quantifier of the attenuation coefficient which is imaged in a CT scanner. The resulting encountered values are Hounsfield units and… 
National Institutes of Health

Papers overview

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2021
2021
Impact of head and neck intensity modulated radiation therapy on CT numbers of primary and nodal Gross tumour volume
Introduction: CT number (CTN) for the gross tumour volumes (GTV) can change with radiation therapy which could be an early… 
2017
2017
Radiation-induced changes in volume and CT number of gross tumour volume and parotid glands during the course of IMRT for head and neck cancers
Introduction. The CT number (CTN) for tumours and organs at risk can change with radiation therapy, which can be an early… 
2016
2016
SU-F-I-44: Using the Air Signal to Characterize Image Noise in CT.
PURPOSE With increasing emphasis on CT image quality and low dose, quality activities analyzing noise levels in images will need… 
2015
2015
SU-E-J-271: Correlation of CT Number Change with Radiation Treatment Response for Pancreatic Cancer
Purpose: It has been reported recently that radiation can induce CT number (CTN) change during radiation therapy (RT) delivery… 
2015
2015
SU-E-J-268: Change of CT Number During the Course of Chemoradiation Therapy for Pancreatic Cancer
Purpose: It has been observed radiation can induce changes in CT number (CTN) inside tumor during the course of radiation… 
2014
2014
SU-E-J-190: Characterization of Radiation Induced CT Number Changes in Tumor and Normal Lung During Radiation Therapy for Lung Cancer.
PURPOSE To measure CT number (CTN) changes in tumor and normal lung as a function of radiation therapy (RT) dose during the… 
2013
2013
SU‐E‐J‐194: Radiation‐Induced CT Number Changes Observed During Radiotherapy for Head and Neck Cancer
Purpose: To characterize radiation‐induced CT number (CTN) changes in tumor from the CT data acquired during IGRT for head and… 
2013
2013
SU-E-I-86: Evaluation of Segmentation Based Attenuation Correction Methods for PET/MR in the Thorax.
PURPOSE To compare and estimate the accuracy of different segmentation-based approaches for attenuation correction of the… 
2000
2000
CT lung densitometry in assessing intralobular air content. An experimental and clinical study.
PURPOSE To introduce a parameter called "intralobular air content percentage" to replace the CT number of the lung and to… 
2000
2000
CT lung densitometry in assessing intralobular air content: An experimental and clinical study
Purpose: To introduce a parameter called “intralobular air content percentage” to replace the CT number of the lung and to… 
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